"cargo-test-macro",
"cargo-test-support",
"cargo-util",
- "clap 4.1.1",
+ "clap 4.1.4",
"crates-io",
"curl",
"curl-sys",
[[package]]
name = "clap"
-version = "4.1.1"
+version = "4.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ec7a4128863c188deefe750ac1d1dfe66c236909f845af04beed823638dc1b2"
+checksum = "f13b9c79b5d1dd500d20ef541215a6423c75829ef43117e1b4d17fd8af0b5d76"
dependencies = [
"bitflags",
"clap_derive 4.1.0",
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "10861370d2ba66b0f5989f83ebf35db6421713fd92351790e7fdd6c36774c56b"
dependencies = [
- "clap 4.1.1",
+ "clap 4.1.4",
]
[[package]]
[[package]]
name = "git2"
-version = "0.16.1"
+version = "0.16.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccf7f68c2995f392c49fffb4f95ae2c873297830eb25c6bc4c114ce8f4562acc"
+checksum = "be36bc9e0546df253c0cc41fd0af34f5e92845ad8509462ec76672fac6997f5b"
dependencies = [
"bitflags",
"libc",
version = "0.1.0"
dependencies = [
"anyhow",
- "clap 4.1.1",
+ "clap 4.1.4",
"fs-err",
"rustdoc-json-types",
"serde",
[[package]]
name = "libgit2-sys"
-version = "0.14.2+1.5.1"
+version = "0.14.1+1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f3d95f6b51075fe9810a7ae22c7095f12b98005ab364d8544797a825ce946a4"
+checksum = "4a07fb2692bc3593bda59de45a502bb3071659f2c515e28c71e728306b038e17"
dependencies = [
"cc",
"libc",
"ammonia",
"anyhow",
"chrono",
- "clap 4.1.1",
+ "clap 4.1.4",
"clap_complete",
"elasticlunr-rs",
"env_logger 0.10.0",
name = "rustbook"
version = "0.1.0"
dependencies = [
- "clap 4.1.1",
+ "clap 4.1.4",
"env_logger 0.7.1",
"mdbook",
]
version = "0.0.0"
dependencies = [
"rustc_ast",
+ "rustc_parse_format",
"rustc_span",
]
[[package]]
name = "rustfmt-config_proc_macro"
-version = "0.2.0"
+version = "0.3.0"
dependencies = [
"proc-macro2",
"quote",
[[package]]
name = "rustfmt-nightly"
-version = "1.5.1"
+version = "1.5.2"
dependencies = [
"annotate-snippets",
"anyhow",
+Version 1.67.0 (2023-01-26)
+==========================
+
+<a id="1.67.0-Language"></a>
+
+Language
+--------
+
+- [Make `Sized` predicates coinductive, allowing cycles.](https://github.com/rust-lang/rust/pull/100386/)
+- [`#[must_use]` annotations on `async fn` also affect the `Future::Output`.](https://github.com/rust-lang/rust/pull/100633/)
+- [Elaborate supertrait obligations when deducing closure signatures.](https://github.com/rust-lang/rust/pull/101834/)
+- [Invalid literals are no longer an error under `cfg(FALSE)`.](https://github.com/rust-lang/rust/pull/102944/)
+- [Unreserve braced enum variants in value namespace.](https://github.com/rust-lang/rust/pull/103578/)
+
+<a id="1.67.0-Compiler"></a>
+
+Compiler
+--------
+
+- [Enable varargs support for calling conventions other than `C` or `cdecl`.](https://github.com/rust-lang/rust/pull/97971/)
+- [Add new MIR constant propagation based on dataflow analysis.](https://github.com/rust-lang/rust/pull/101168/)
+- [Optimize field ordering by grouping m\*2^n-sized fields with equivalently aligned ones.](https://github.com/rust-lang/rust/pull/102750/)
+- [Stabilize native library modifier `verbatim`.](https://github.com/rust-lang/rust/pull/104360/)
+
+Added and removed targets:
+
+- [Add a tier 3 target for PowerPC on AIX](https://github.com/rust-lang/rust/pull/102293/), `powerpc64-ibm-aix`.
+- [Add a tier 3 target for the Sony PlayStation 1](https://github.com/rust-lang/rust/pull/102689/), `mipsel-sony-psx`.
+- [Add tier 3 `no_std` targets for the QNX Neutrino RTOS](https://github.com/rust-lang/rust/pull/102701/),
+ `aarch64-unknown-nto-qnx710` and `x86_64-pc-nto-qnx710`.
+- [Remove tier 3 `linuxkernel` targets](https://github.com/rust-lang/rust/pull/104015/) (not used by the actual kernel).
+
+Refer to Rust's [platform support page][platform-support-doc]
+for more information on Rust's tiered platform support.
+
+<a id="1.67.0-Libraries"></a>
+
+Libraries
+---------
+
+- [Merge `crossbeam-channel` into `std::sync::mpsc`.](https://github.com/rust-lang/rust/pull/93563/)
+- [Fix inconsistent rounding of 0.5 when formatted to 0 decimal places.](https://github.com/rust-lang/rust/pull/102935/)
+- [Derive `Eq` and `Hash` for `ControlFlow`.](https://github.com/rust-lang/rust/pull/103084/)
+- [Don't build `compiler_builtins` with `-C panic=abort`.](https://github.com/rust-lang/rust/pull/103786/)
+
+<a id="1.67.0-Stabilized-APIs"></a>
+
+Stabilized APIs
+---------------
+
+- [`{integer}::checked_ilog`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog)
+- [`{integer}::checked_ilog2`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog2)
+- [`{integer}::checked_ilog10`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.checked_ilog10)
+- [`{integer}::ilog`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog)
+- [`{integer}::ilog2`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog2)
+- [`{integer}::ilog10`](https://doc.rust-lang.org/stable/std/primitive.i32.html#method.ilog10)
+- [`NonZeroU*::ilog2`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#method.ilog2)
+- [`NonZeroU*::ilog10`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#method.ilog10)
+- [`NonZero*::BITS`](https://doc.rust-lang.org/stable/std/num/struct.NonZeroU32.html#associatedconstant.BITS)
+
+These APIs are now stable in const contexts:
+
+- [`char::from_u32`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.from_u32)
+- [`char::from_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.from_digit)
+- [`char::to_digit`](https://doc.rust-lang.org/stable/std/primitive.char.html#method.to_digit)
+- [`core::char::from_u32`](https://doc.rust-lang.org/stable/core/char/fn.from_u32.html)
+- [`core::char::from_digit`](https://doc.rust-lang.org/stable/core/char/fn.from_digit.html)
+
+<a id="1.67.0-Compatibility-Notes"></a>
+
+Compatibility Notes
+-------------------
+
+- [The layout of `repr(Rust)` types now groups m\*2^n-sized fields with
+ equivalently aligned ones.](https://github.com/rust-lang/rust/pull/102750/)
+ This is intended to be an optimization, but it is also known to increase type
+ sizes in a few cases for the placement of enum tags. As a reminder, the layout
+ of `repr(Rust)` types is an implementation detail, subject to change.
+- [0.5 now rounds to 0 when formatted to 0 decimal places.](https://github.com/rust-lang/rust/pull/102935/)
+ This makes it consistent with the rest of floating point formatting that
+ rounds ties toward even digits.
+- [Chains of `&&` and `||` will now drop temporaries from their sub-expressions in
+ evaluation order, left-to-right.](https://github.com/rust-lang/rust/pull/103293/)
+ Previously, it was "twisted" such that the _first_ expression dropped its
+ temporaries _last_, after all of the other expressions dropped in order.
+- [Underscore suffixes on string literals are now a hard error.](https://github.com/rust-lang/rust/pull/103914/)
+ This has been a future-compatibility warning since 1.20.0.
+- [Stop passing `-export-dynamic` to `wasm-ld`.](https://github.com/rust-lang/rust/pull/105405/)
+- [`main` is now mangled as `__main_void` on `wasm32-wasi`.](https://github.com/rust-lang/rust/pull/105468/)
+- [Cargo now emits an error if there are multiple registries in the configuration
+ with the same index URL.](https://github.com/rust-lang/cargo/pull/10592)
+
+<a id="1.67.0-Internal-Changes"></a>
+
+Internal Changes
+----------------
+
+These changes do not affect any public interfaces of Rust, but they represent
+significant improvements to the performance or internals of rustc and related
+tools.
+
+- [Rewrite LLVM's archive writer in Rust.](https://github.com/rust-lang/rust/pull/97485/)
+
Version 1.66.1 (2023-01-10)
===========================
["a", ref a @ ..] => dl.aggregate_align = align(a, "a")?,
["f32", ref a @ ..] => dl.f32_align = align(a, "f32")?,
["f64", ref a @ ..] => dl.f64_align = align(a, "f64")?,
+ // FIXME(erikdesjardins): we should be parsing nonzero address spaces
+ // this will require replacing TargetDataLayout::{pointer_size,pointer_align}
+ // with e.g. `fn pointer_size_in(AddressSpace)`
[p @ "p", s, ref a @ ..] | [p @ "p0", s, ref a @ ..] => {
dl.pointer_size = size(s, p)?;
dl.pointer_align = align(a, p)?;
Int(Integer, bool),
F32,
F64,
- Pointer,
+ Pointer(AddressSpace),
}
impl Primitive {
Int(i, _) => i.size(),
F32 => Size::from_bits(32),
F64 => Size::from_bits(64),
- Pointer => dl.pointer_size,
+ // FIXME(erikdesjardins): ignoring address space is technically wrong, pointers in
+ // different address spaces can have different sizes
+ // (but TargetDataLayout doesn't currently parse that part of the DL string)
+ Pointer(_) => dl.pointer_size,
}
}
Int(i, _) => i.align(dl),
F32 => dl.f32_align,
F64 => dl.f64_align,
- Pointer => dl.pointer_align,
+ // FIXME(erikdesjardins): ignoring address space is technically wrong, pointers in
+ // different address spaces can have different alignments
+ // (but TargetDataLayout doesn't currently parse that part of the DL string)
+ Pointer(_) => dl.pointer_align,
}
}
-
- // FIXME(eddyb) remove, it's trivial thanks to `matches!`.
- #[inline]
- pub fn is_float(self) -> bool {
- matches!(self, F32 | F64)
- }
-
- // FIXME(eddyb) remove, it's completely unused.
- #[inline]
- pub fn is_int(self) -> bool {
- matches!(self, Int(..))
- }
-
- #[inline]
- pub fn is_ptr(self) -> bool {
- matches!(self, Pointer)
- }
}
/// Inclusive wrap-around range of valid values, that is, if
/// An identifier that specifies the address space that some operation
/// should operate on. Special address spaces have an effect on code generation,
/// depending on the target and the address spaces it implements.
-#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[cfg_attr(feature = "nightly", derive(HashStable_Generic))]
pub struct AddressSpace(pub u32);
impl AddressSpace {
pub size: Size,
pub align: Align,
pub safe: Option<PointerKind>,
- pub address_space: AddressSpace,
}
/// Used in `might_permit_raw_init` to indicate the kind of initialisation
//! - [`Attribute`]: Metadata associated with item.
//! - [`UnOp`], [`BinOp`], and [`BinOpKind`]: Unary and binary operators.
+pub use crate::format::*;
pub use crate::util::parser::ExprPrecedence;
pub use GenericArgs::*;
pub use UnsafeSource::*;
ExprKind::Try(..) => ExprPrecedence::Try,
ExprKind::Yield(..) => ExprPrecedence::Yield,
ExprKind::Yeet(..) => ExprPrecedence::Yeet,
+ ExprKind::FormatArgs(..) => ExprPrecedence::FormatArgs,
ExprKind::Err => ExprPrecedence::Err,
}
}
/// with a `ByteStr` literal.
IncludedBytes(Lrc<[u8]>),
+ /// A `format_args!()` expression.
+ FormatArgs(P<FormatArgs>),
+
/// Placeholder for an expression that wasn't syntactically well formed in some way.
Err,
}
--- /dev/null
+use crate::ptr::P;
+use crate::Expr;
+use rustc_data_structures::fx::FxHashMap;
+use rustc_span::symbol::{Ident, Symbol};
+use rustc_span::Span;
+
+// Definitions:
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └──────────────────────────────────────────────┘
+// FormatArgs
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └─────────┘
+// argument
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └───────────────────┘
+// template
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └────┘└─────────┘└┘
+// pieces
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └────┘ └┘
+// literal pieces
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └─────────┘
+// placeholder
+//
+// format_args!("hello {abc:.xyz$}!!", abc="world");
+// └─┘ └─┘
+// positions (could be names, numbers, empty, or `*`)
+
+/// (Parsed) format args.
+///
+/// Basically the "AST" for a complete `format_args!()`.
+///
+/// E.g., `format_args!("hello {name}");`.
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub struct FormatArgs {
+ pub span: Span,
+ pub template: Vec<FormatArgsPiece>,
+ pub arguments: FormatArguments,
+}
+
+/// A piece of a format template string.
+///
+/// E.g. "hello" or "{name}".
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub enum FormatArgsPiece {
+ Literal(Symbol),
+ Placeholder(FormatPlaceholder),
+}
+
+/// The arguments to format_args!().
+///
+/// E.g. `1, 2, name="ferris", n=3`,
+/// but also implicit captured arguments like `x` in `format_args!("{x}")`.
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub struct FormatArguments {
+ arguments: Vec<FormatArgument>,
+ num_unnamed_args: usize,
+ num_explicit_args: usize,
+ names: FxHashMap<Symbol, usize>,
+}
+
+// FIXME: Rustdoc has trouble proving Send/Sync for this. See #106930.
+#[cfg(parallel_compiler)]
+unsafe impl Sync for FormatArguments {}
+#[cfg(parallel_compiler)]
+unsafe impl Send for FormatArguments {}
+
+impl FormatArguments {
+ pub fn new() -> Self {
+ Self {
+ arguments: Vec::new(),
+ names: FxHashMap::default(),
+ num_unnamed_args: 0,
+ num_explicit_args: 0,
+ }
+ }
+
+ pub fn add(&mut self, arg: FormatArgument) -> usize {
+ let index = self.arguments.len();
+ if let Some(name) = arg.kind.ident() {
+ self.names.insert(name.name, index);
+ } else if self.names.is_empty() {
+ // Only count the unnamed args before the first named arg.
+ // (Any later ones are errors.)
+ self.num_unnamed_args += 1;
+ }
+ if !matches!(arg.kind, FormatArgumentKind::Captured(..)) {
+ // This is an explicit argument.
+ // Make sure that all arguments so far are explcit.
+ assert_eq!(
+ self.num_explicit_args,
+ self.arguments.len(),
+ "captured arguments must be added last"
+ );
+ self.num_explicit_args += 1;
+ }
+ self.arguments.push(arg);
+ index
+ }
+
+ pub fn by_name(&self, name: Symbol) -> Option<(usize, &FormatArgument)> {
+ let i = *self.names.get(&name)?;
+ Some((i, &self.arguments[i]))
+ }
+
+ pub fn by_index(&self, i: usize) -> Option<&FormatArgument> {
+ (i < self.num_explicit_args).then(|| &self.arguments[i])
+ }
+
+ pub fn unnamed_args(&self) -> &[FormatArgument] {
+ &self.arguments[..self.num_unnamed_args]
+ }
+
+ pub fn named_args(&self) -> &[FormatArgument] {
+ &self.arguments[self.num_unnamed_args..self.num_explicit_args]
+ }
+
+ pub fn explicit_args(&self) -> &[FormatArgument] {
+ &self.arguments[..self.num_explicit_args]
+ }
+
+ pub fn all_args(&self) -> &[FormatArgument] {
+ &self.arguments[..]
+ }
+
+ pub fn all_args_mut(&mut self) -> &mut [FormatArgument] {
+ &mut self.arguments[..]
+ }
+}
+
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub struct FormatArgument {
+ pub kind: FormatArgumentKind,
+ pub expr: P<Expr>,
+}
+
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub enum FormatArgumentKind {
+ /// `format_args(…, arg)`
+ Normal,
+ /// `format_args(…, arg = 1)`
+ Named(Ident),
+ /// `format_args("… {arg} …")`
+ Captured(Ident),
+}
+
+impl FormatArgumentKind {
+ pub fn ident(&self) -> Option<Ident> {
+ match self {
+ &Self::Normal => None,
+ &Self::Named(id) => Some(id),
+ &Self::Captured(id) => Some(id),
+ }
+ }
+}
+
+#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub struct FormatPlaceholder {
+ /// Index into [`FormatArgs::arguments`].
+ pub argument: FormatArgPosition,
+ /// The span inside the format string for the full `{…}` placeholder.
+ pub span: Option<Span>,
+ /// `{}`, `{:?}`, or `{:x}`, etc.
+ pub format_trait: FormatTrait,
+ /// `{}` or `{:.5}` or `{:-^20}`, etc.
+ pub format_options: FormatOptions,
+}
+
+#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub struct FormatArgPosition {
+ /// Which argument this position refers to (Ok),
+ /// or would've referred to if it existed (Err).
+ pub index: Result<usize, usize>,
+ /// What kind of position this is. See [`FormatArgPositionKind`].
+ pub kind: FormatArgPositionKind,
+ /// The span of the name or number.
+ pub span: Option<Span>,
+}
+
+#[derive(Copy, Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatArgPositionKind {
+ /// `{}` or `{:.*}`
+ Implicit,
+ /// `{1}` or `{:1$}` or `{:.1$}`
+ Number,
+ /// `{a}` or `{:a$}` or `{:.a$}`
+ Named,
+}
+
+#[derive(Copy, Clone, Encodable, Decodable, Debug, PartialEq, Eq, Hash)]
+pub enum FormatTrait {
+ /// `{}`
+ Display,
+ /// `{:?}`
+ Debug,
+ /// `{:e}`
+ LowerExp,
+ /// `{:E}`
+ UpperExp,
+ /// `{:o}`
+ Octal,
+ /// `{:p}`
+ Pointer,
+ /// `{:b}`
+ Binary,
+ /// `{:x}`
+ LowerHex,
+ /// `{:X}`
+ UpperHex,
+}
+
+#[derive(Clone, Encodable, Decodable, Default, Debug, PartialEq, Eq)]
+pub struct FormatOptions {
+ /// The width. E.g. `{:5}` or `{:width$}`.
+ pub width: Option<FormatCount>,
+ /// The precision. E.g. `{:.5}` or `{:.precision$}`.
+ pub precision: Option<FormatCount>,
+ /// The alignment. E.g. `{:>}` or `{:<}` or `{:^}`.
+ pub alignment: Option<FormatAlignment>,
+ /// The fill character. E.g. the `.` in `{:.>10}`.
+ pub fill: Option<char>,
+ /// The `+`, `-`, `0`, `#`, `x?` and `X?` flags.
+ pub flags: u32,
+}
+
+#[derive(Copy, Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatAlignment {
+ /// `{:<}`
+ Left,
+ /// `{:>}`
+ Right,
+ /// `{:^}`
+ Center,
+}
+
+#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatCount {
+ /// `{:5}` or `{:.5}`
+ Literal(usize),
+ /// `{:.*}`, `{:.5$}`, or `{:a$}`, etc.
+ Argument(FormatArgPosition),
+}
pub mod attr;
pub mod entry;
pub mod expand;
+pub mod format;
pub mod mut_visit;
pub mod node_id;
pub mod ptr;
pub use self::ast::*;
pub use self::ast_traits::{AstDeref, AstNodeWrapper, HasAttrs, HasNodeId, HasSpan, HasTokens};
+pub use self::format::*;
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
fn visit_inline_asm_sym(&mut self, sym: &mut InlineAsmSym) {
noop_visit_inline_asm_sym(sym, self)
}
+
+ fn visit_format_args(&mut self, fmt: &mut FormatArgs) {
+ noop_visit_format_args(fmt, self)
+ }
}
/// Use a map-style function (`FnOnce(T) -> T`) to overwrite a `&mut T`. Useful
vis.visit_path(path);
}
+pub fn noop_visit_format_args<T: MutVisitor>(fmt: &mut FormatArgs, vis: &mut T) {
+ for arg in fmt.arguments.all_args_mut() {
+ if let FormatArgumentKind::Named(name) = &mut arg.kind {
+ vis.visit_ident(name);
+ }
+ vis.visit_expr(&mut arg.expr);
+ }
+}
+
pub fn noop_visit_expr<T: MutVisitor>(
Expr { kind, id, span, attrs, tokens }: &mut Expr,
vis: &mut T,
visit_opt(expr, |expr| vis.visit_expr(expr));
}
ExprKind::InlineAsm(asm) => vis.visit_inline_asm(asm),
+ ExprKind::FormatArgs(fmt) => vis.visit_format_args(fmt),
ExprKind::MacCall(mac) => vis.visit_mac_call(mac),
ExprKind::Struct(se) => {
let StructExpr { qself, path, fields, rest } = se.deref_mut();
Try,
InlineAsm,
Mac,
+ FormatArgs,
Array,
Repeat,
| ExprPrecedence::Index
| ExprPrecedence::Try
| ExprPrecedence::InlineAsm
- | ExprPrecedence::Mac => PREC_POSTFIX,
+ | ExprPrecedence::Mac
+ | ExprPrecedence::FormatArgs => PREC_POSTFIX,
// Never need parens
ExprPrecedence::Array
fn visit_inline_asm(&mut self, asm: &'ast InlineAsm) {
walk_inline_asm(self, asm)
}
+ fn visit_format_args(&mut self, fmt: &'ast FormatArgs) {
+ walk_format_args(self, fmt)
+ }
fn visit_inline_asm_sym(&mut self, sym: &'ast InlineAsmSym) {
walk_inline_asm_sym(self, sym)
}
walk_list!(visitor, visit_lifetime, opt_lifetime, LifetimeCtxt::Ref);
visitor.visit_ty(&mutable_type.ty)
}
- TyKind::Tup(tuple_element_types) => {
- walk_list!(visitor, visit_ty, tuple_element_types);
+ TyKind::Tup(tys) => {
+ walk_list!(visitor, visit_ty, tys);
}
TyKind::BareFn(function_declaration) => {
walk_list!(visitor, visit_generic_param, &function_declaration.generic_params);
visitor.visit_path(&sym.path, sym.id);
}
+pub fn walk_format_args<'a, V: Visitor<'a>>(visitor: &mut V, fmt: &'a FormatArgs) {
+ for arg in fmt.arguments.all_args() {
+ if let FormatArgumentKind::Named(name) = arg.kind {
+ visitor.visit_ident(name);
+ }
+ visitor.visit_expr(&arg.expr);
+ }
+}
+
pub fn walk_expr<'a, V: Visitor<'a>>(visitor: &mut V, expression: &'a Expr) {
walk_list!(visitor, visit_attribute, expression.attrs.iter());
ExprKind::MacCall(mac) => visitor.visit_mac_call(mac),
ExprKind::Paren(subexpression) => visitor.visit_expr(subexpression),
ExprKind::InlineAsm(asm) => visitor.visit_inline_asm(asm),
+ ExprKind::FormatArgs(f) => visitor.visit_format_args(f),
ExprKind::Yield(optional_expression) => {
walk_list!(visitor, visit_expr, optional_expression);
}
use rustc_hir::definitions::DefPathData;
use rustc_session::errors::report_lit_error;
use rustc_span::source_map::{respan, DesugaringKind, Span, Spanned};
-use rustc_span::symbol::{sym, Ident};
+use rustc_span::symbol::{sym, Ident, Symbol};
use rustc_span::DUMMY_SP;
use thin_vec::thin_vec;
ExprKind::InlineAsm(asm) => {
hir::ExprKind::InlineAsm(self.lower_inline_asm(e.span, asm))
}
+ ExprKind::FormatArgs(fmt) => self.lower_format_args(e.span, fmt),
ExprKind::Struct(se) => {
let rest = match &se.rest {
StructRest::Base(e) => Some(self.lower_expr(e)),
self.expr(span, hir::ExprKind::DropTemps(expr))
}
- fn expr_match(
+ pub(super) fn expr_match(
&mut self,
span: Span,
arg: &'hir hir::Expr<'hir>,
self.arena.alloc(self.expr(sp, hir::ExprKind::Tup(&[])))
}
- fn expr_call_mut(
+ pub(super) fn expr_usize(&mut self, sp: Span, value: usize) -> hir::Expr<'hir> {
+ self.expr(
+ sp,
+ hir::ExprKind::Lit(hir::Lit {
+ span: sp,
+ node: ast::LitKind::Int(
+ value as u128,
+ ast::LitIntType::Unsigned(ast::UintTy::Usize),
+ ),
+ }),
+ )
+ }
+
+ pub(super) fn expr_u32(&mut self, sp: Span, value: u32) -> hir::Expr<'hir> {
+ self.expr(
+ sp,
+ hir::ExprKind::Lit(hir::Lit {
+ span: sp,
+ node: ast::LitKind::Int(value.into(), ast::LitIntType::Unsigned(ast::UintTy::U32)),
+ }),
+ )
+ }
+
+ pub(super) fn expr_char(&mut self, sp: Span, value: char) -> hir::Expr<'hir> {
+ self.expr(sp, hir::ExprKind::Lit(hir::Lit { span: sp, node: ast::LitKind::Char(value) }))
+ }
+
+ pub(super) fn expr_str(&mut self, sp: Span, value: Symbol) -> hir::Expr<'hir> {
+ self.expr(
+ sp,
+ hir::ExprKind::Lit(hir::Lit {
+ span: sp,
+ node: ast::LitKind::Str(value, ast::StrStyle::Cooked),
+ }),
+ )
+ }
+
+ pub(super) fn expr_call_mut(
&mut self,
span: Span,
e: &'hir hir::Expr<'hir>,
self.expr(span, hir::ExprKind::Call(e, args))
}
- fn expr_call(
+ pub(super) fn expr_call(
&mut self,
span: Span,
e: &'hir hir::Expr<'hir>,
)
}
+ /// `<LangItem>::name`
+ pub(super) fn expr_lang_item_type_relative(
+ &mut self,
+ span: Span,
+ lang_item: hir::LangItem,
+ name: Symbol,
+ ) -> hir::Expr<'hir> {
+ let path = hir::ExprKind::Path(hir::QPath::TypeRelative(
+ self.arena.alloc(self.ty(
+ span,
+ hir::TyKind::Path(hir::QPath::LangItem(lang_item, self.lower_span(span), None)),
+ )),
+ self.arena.alloc(hir::PathSegment::new(
+ Ident::new(name, span),
+ self.next_id(),
+ Res::Err,
+ )),
+ ));
+ self.expr(span, path)
+ }
+
pub(super) fn expr_ident(
&mut self,
sp: Span,
self.expr(b.span, hir::ExprKind::Block(b, None))
}
+ pub(super) fn expr_array_ref(
+ &mut self,
+ span: Span,
+ elements: &'hir [hir::Expr<'hir>],
+ ) -> hir::Expr<'hir> {
+ let addrof = hir::ExprKind::AddrOf(
+ hir::BorrowKind::Ref,
+ hir::Mutability::Not,
+ self.arena.alloc(self.expr(span, hir::ExprKind::Array(elements))),
+ );
+ self.expr(span, addrof)
+ }
+
pub(super) fn expr(&mut self, span: Span, kind: hir::ExprKind<'hir>) -> hir::Expr<'hir> {
let hir_id = self.next_id();
hir::Expr { hir_id, kind, span: self.lower_span(span) }
}
- fn expr_field(
+ pub(super) fn expr_field(
&mut self,
ident: Ident,
expr: &'hir hir::Expr<'hir>,
}
}
- fn arm(&mut self, pat: &'hir hir::Pat<'hir>, expr: &'hir hir::Expr<'hir>) -> hir::Arm<'hir> {
+ pub(super) fn arm(
+ &mut self,
+ pat: &'hir hir::Pat<'hir>,
+ expr: &'hir hir::Expr<'hir>,
+ ) -> hir::Arm<'hir> {
hir::Arm {
hir_id: self.next_id(),
pat,
--- /dev/null
+use super::LoweringContext;
+use rustc_ast as ast;
+use rustc_ast::visit::{self, Visitor};
+use rustc_ast::*;
+use rustc_data_structures::fx::FxIndexSet;
+use rustc_hir as hir;
+use rustc_span::{
+ sym,
+ symbol::{kw, Ident},
+ Span,
+};
+
+impl<'hir> LoweringContext<'_, 'hir> {
+ pub(crate) fn lower_format_args(&mut self, sp: Span, fmt: &FormatArgs) -> hir::ExprKind<'hir> {
+ expand_format_args(self, sp, fmt)
+ }
+}
+
+#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq)]
+enum ArgumentType {
+ Format(FormatTrait),
+ Usize,
+}
+
+/// Generate a hir expression representing an argument to a format_args invocation.
+///
+/// Generates:
+///
+/// ```text
+/// <core::fmt::ArgumentV1>::new_…(arg)
+/// ```
+fn make_argument<'hir>(
+ ctx: &mut LoweringContext<'_, 'hir>,
+ sp: Span,
+ arg: &'hir hir::Expr<'hir>,
+ ty: ArgumentType,
+) -> hir::Expr<'hir> {
+ use ArgumentType::*;
+ use FormatTrait::*;
+ let new_fn = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ sp,
+ hir::LangItem::FormatArgument,
+ match ty {
+ Format(Display) => sym::new_display,
+ Format(Debug) => sym::new_debug,
+ Format(LowerExp) => sym::new_lower_exp,
+ Format(UpperExp) => sym::new_upper_exp,
+ Format(Octal) => sym::new_octal,
+ Format(Pointer) => sym::new_pointer,
+ Format(Binary) => sym::new_binary,
+ Format(LowerHex) => sym::new_lower_hex,
+ Format(UpperHex) => sym::new_upper_hex,
+ Usize => sym::from_usize,
+ },
+ ));
+ ctx.expr_call_mut(sp, new_fn, std::slice::from_ref(arg))
+}
+
+/// Generate a hir expression for a format_args Count.
+///
+/// Generates:
+///
+/// ```text
+/// <core::fmt::rt::v1::Count>::Is(…)
+/// ```
+///
+/// or
+///
+/// ```text
+/// <core::fmt::rt::v1::Count>::Param(…)
+/// ```
+///
+/// or
+///
+/// ```text
+/// <core::fmt::rt::v1::Count>::Implied
+/// ```
+fn make_count<'hir>(
+ ctx: &mut LoweringContext<'_, 'hir>,
+ sp: Span,
+ count: &Option<FormatCount>,
+ argmap: &mut FxIndexSet<(usize, ArgumentType)>,
+) -> hir::Expr<'hir> {
+ match count {
+ Some(FormatCount::Literal(n)) => {
+ let count_is = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ sp,
+ hir::LangItem::FormatCount,
+ sym::Is,
+ ));
+ let value = ctx.arena.alloc_from_iter([ctx.expr_usize(sp, *n)]);
+ ctx.expr_call_mut(sp, count_is, value)
+ }
+ Some(FormatCount::Argument(arg)) => {
+ if let Ok(arg_index) = arg.index {
+ let (i, _) = argmap.insert_full((arg_index, ArgumentType::Usize));
+ let count_param = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ sp,
+ hir::LangItem::FormatCount,
+ sym::Param,
+ ));
+ let value = ctx.arena.alloc_from_iter([ctx.expr_usize(sp, i)]);
+ ctx.expr_call_mut(sp, count_param, value)
+ } else {
+ ctx.expr(sp, hir::ExprKind::Err)
+ }
+ }
+ None => ctx.expr_lang_item_type_relative(sp, hir::LangItem::FormatCount, sym::Implied),
+ }
+}
+
+/// Generate a hir expression for a format_args placeholder specification.
+///
+/// Generates
+///
+/// ```text
+/// <core::fmt::rt::v1::Argument::new(
+/// …usize, // position
+/// '…', // fill
+/// <core::fmt::rt::v1::Alignment>::…, // alignment
+/// …u32, // flags
+/// <core::fmt::rt::v1::Count::…>, // width
+/// <core::fmt::rt::v1::Count::…>, // precision
+/// )
+/// ```
+fn make_format_spec<'hir>(
+ ctx: &mut LoweringContext<'_, 'hir>,
+ sp: Span,
+ placeholder: &FormatPlaceholder,
+ argmap: &mut FxIndexSet<(usize, ArgumentType)>,
+) -> hir::Expr<'hir> {
+ let position = match placeholder.argument.index {
+ Ok(arg_index) => {
+ let (i, _) =
+ argmap.insert_full((arg_index, ArgumentType::Format(placeholder.format_trait)));
+ ctx.expr_usize(sp, i)
+ }
+ Err(_) => ctx.expr(sp, hir::ExprKind::Err),
+ };
+ let fill = ctx.expr_char(sp, placeholder.format_options.fill.unwrap_or(' '));
+ let align = ctx.expr_lang_item_type_relative(
+ sp,
+ hir::LangItem::FormatAlignment,
+ match placeholder.format_options.alignment {
+ Some(FormatAlignment::Left) => sym::Left,
+ Some(FormatAlignment::Right) => sym::Right,
+ Some(FormatAlignment::Center) => sym::Center,
+ None => sym::Unknown,
+ },
+ );
+ let flags = ctx.expr_u32(sp, placeholder.format_options.flags);
+ let prec = make_count(ctx, sp, &placeholder.format_options.precision, argmap);
+ let width = make_count(ctx, sp, &placeholder.format_options.width, argmap);
+ let format_placeholder_new = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ sp,
+ hir::LangItem::FormatPlaceholder,
+ sym::new,
+ ));
+ let args = ctx.arena.alloc_from_iter([position, fill, align, flags, prec, width]);
+ ctx.expr_call_mut(sp, format_placeholder_new, args)
+}
+
+fn expand_format_args<'hir>(
+ ctx: &mut LoweringContext<'_, 'hir>,
+ macsp: Span,
+ fmt: &FormatArgs,
+) -> hir::ExprKind<'hir> {
+ let lit_pieces =
+ ctx.arena.alloc_from_iter(fmt.template.iter().enumerate().filter_map(|(i, piece)| {
+ match piece {
+ &FormatArgsPiece::Literal(s) => Some(ctx.expr_str(fmt.span, s)),
+ &FormatArgsPiece::Placeholder(_) => {
+ // Inject empty string before placeholders when not already preceded by a literal piece.
+ if i == 0 || matches!(fmt.template[i - 1], FormatArgsPiece::Placeholder(_)) {
+ Some(ctx.expr_str(fmt.span, kw::Empty))
+ } else {
+ None
+ }
+ }
+ }
+ }));
+ let lit_pieces = ctx.expr_array_ref(fmt.span, lit_pieces);
+
+ // Whether we'll use the `Arguments::new_v1_formatted` form (true),
+ // or the `Arguments::new_v1` form (false).
+ let mut use_format_options = false;
+
+ // Create a list of all _unique_ (argument, format trait) combinations.
+ // E.g. "{0} {0:x} {0} {1}" -> [(0, Display), (0, LowerHex), (1, Display)]
+ let mut argmap = FxIndexSet::default();
+ for piece in &fmt.template {
+ let FormatArgsPiece::Placeholder(placeholder) = piece else { continue };
+ if placeholder.format_options != Default::default() {
+ // Can't use basic form if there's any formatting options.
+ use_format_options = true;
+ }
+ if let Ok(index) = placeholder.argument.index {
+ if !argmap.insert((index, ArgumentType::Format(placeholder.format_trait))) {
+ // Duplicate (argument, format trait) combination,
+ // which we'll only put once in the args array.
+ use_format_options = true;
+ }
+ }
+ }
+
+ let format_options = use_format_options.then(|| {
+ // Generate:
+ // &[format_spec_0, format_spec_1, format_spec_2]
+ let elements: Vec<_> = fmt
+ .template
+ .iter()
+ .filter_map(|piece| {
+ let FormatArgsPiece::Placeholder(placeholder) = piece else { return None };
+ Some(make_format_spec(ctx, macsp, placeholder, &mut argmap))
+ })
+ .collect();
+ ctx.expr_array_ref(macsp, ctx.arena.alloc_from_iter(elements))
+ });
+
+ let arguments = fmt.arguments.all_args();
+
+ // If the args array contains exactly all the original arguments once,
+ // in order, we can use a simple array instead of a `match` construction.
+ // However, if there's a yield point in any argument except the first one,
+ // we don't do this, because an ArgumentV1 cannot be kept across yield points.
+ //
+ // This is an optimization, speeding up compilation about 1-2% in some cases.
+ // See https://github.com/rust-lang/rust/pull/106770#issuecomment-1380790609
+ let use_simple_array = argmap.len() == arguments.len()
+ && argmap.iter().enumerate().all(|(i, &(j, _))| i == j)
+ && arguments.iter().skip(1).all(|arg| !may_contain_yield_point(&arg.expr));
+
+ let args = if use_simple_array {
+ // Generate:
+ // &[
+ // <core::fmt::ArgumentV1>::new_display(&arg0),
+ // <core::fmt::ArgumentV1>::new_lower_hex(&arg1),
+ // <core::fmt::ArgumentV1>::new_debug(&arg2),
+ // …
+ // ]
+ let elements: Vec<_> = arguments
+ .iter()
+ .zip(argmap)
+ .map(|(arg, (_, ty))| {
+ let sp = arg.expr.span.with_ctxt(macsp.ctxt());
+ let arg = ctx.lower_expr(&arg.expr);
+ let ref_arg = ctx.arena.alloc(ctx.expr(
+ sp,
+ hir::ExprKind::AddrOf(hir::BorrowKind::Ref, hir::Mutability::Not, arg),
+ ));
+ make_argument(ctx, sp, ref_arg, ty)
+ })
+ .collect();
+ ctx.expr_array_ref(macsp, ctx.arena.alloc_from_iter(elements))
+ } else {
+ // Generate:
+ // &match (&arg0, &arg1, &…) {
+ // args => [
+ // <core::fmt::ArgumentV1>::new_display(args.0),
+ // <core::fmt::ArgumentV1>::new_lower_hex(args.1),
+ // <core::fmt::ArgumentV1>::new_debug(args.0),
+ // …
+ // ]
+ // }
+ let args_ident = Ident::new(sym::args, macsp);
+ let (args_pat, args_hir_id) = ctx.pat_ident(macsp, args_ident);
+ let args = ctx.arena.alloc_from_iter(argmap.iter().map(|&(arg_index, ty)| {
+ if let Some(arg) = arguments.get(arg_index) {
+ let sp = arg.expr.span.with_ctxt(macsp.ctxt());
+ let args_ident_expr = ctx.expr_ident(macsp, args_ident, args_hir_id);
+ let arg = ctx.arena.alloc(ctx.expr(
+ sp,
+ hir::ExprKind::Field(
+ args_ident_expr,
+ Ident::new(sym::integer(arg_index), macsp),
+ ),
+ ));
+ make_argument(ctx, sp, arg, ty)
+ } else {
+ ctx.expr(macsp, hir::ExprKind::Err)
+ }
+ }));
+ let elements: Vec<_> = arguments
+ .iter()
+ .map(|arg| {
+ let arg_expr = ctx.lower_expr(&arg.expr);
+ ctx.expr(
+ arg.expr.span.with_ctxt(macsp.ctxt()),
+ hir::ExprKind::AddrOf(hir::BorrowKind::Ref, hir::Mutability::Not, arg_expr),
+ )
+ })
+ .collect();
+ let args_tuple = ctx
+ .arena
+ .alloc(ctx.expr(macsp, hir::ExprKind::Tup(ctx.arena.alloc_from_iter(elements))));
+ let array = ctx.arena.alloc(ctx.expr(macsp, hir::ExprKind::Array(args)));
+ let match_arms = ctx.arena.alloc_from_iter([ctx.arm(args_pat, array)]);
+ let match_expr = ctx.arena.alloc(ctx.expr_match(
+ macsp,
+ args_tuple,
+ match_arms,
+ hir::MatchSource::FormatArgs,
+ ));
+ ctx.expr(
+ macsp,
+ hir::ExprKind::AddrOf(hir::BorrowKind::Ref, hir::Mutability::Not, match_expr),
+ )
+ };
+
+ if let Some(format_options) = format_options {
+ // Generate:
+ // <core::fmt::Arguments>::new_v1_formatted(
+ // lit_pieces,
+ // args,
+ // format_options,
+ // unsafe { ::core::fmt::UnsafeArg::new() }
+ // )
+ let new_v1_formatted = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ macsp,
+ hir::LangItem::FormatArguments,
+ sym::new_v1_formatted,
+ ));
+ let unsafe_arg_new = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ macsp,
+ hir::LangItem::FormatUnsafeArg,
+ sym::new,
+ ));
+ let unsafe_arg_new_call = ctx.expr_call(macsp, unsafe_arg_new, &[]);
+ let hir_id = ctx.next_id();
+ let unsafe_arg = ctx.expr_block(ctx.arena.alloc(hir::Block {
+ stmts: &[],
+ expr: Some(unsafe_arg_new_call),
+ hir_id,
+ rules: hir::BlockCheckMode::UnsafeBlock(hir::UnsafeSource::CompilerGenerated),
+ span: macsp,
+ targeted_by_break: false,
+ }));
+ let args = ctx.arena.alloc_from_iter([lit_pieces, args, format_options, unsafe_arg]);
+ hir::ExprKind::Call(new_v1_formatted, args)
+ } else {
+ // Generate:
+ // <core::fmt::Arguments>::new_v1(
+ // lit_pieces,
+ // args,
+ // )
+ let new_v1 = ctx.arena.alloc(ctx.expr_lang_item_type_relative(
+ macsp,
+ hir::LangItem::FormatArguments,
+ sym::new_v1,
+ ));
+ let new_args = ctx.arena.alloc_from_iter([lit_pieces, args]);
+ hir::ExprKind::Call(new_v1, new_args)
+ }
+}
+
+fn may_contain_yield_point(e: &ast::Expr) -> bool {
+ struct MayContainYieldPoint(bool);
+
+ impl Visitor<'_> for MayContainYieldPoint {
+ fn visit_expr(&mut self, e: &ast::Expr) {
+ if let ast::ExprKind::Await(_) | ast::ExprKind::Yield(_) = e.kind {
+ self.0 = true;
+ } else {
+ visit::walk_expr(self, e);
+ }
+ }
+
+ fn visit_mac_call(&mut self, _: &ast::MacCall) {
+ // Macros should be expanded at this point.
+ unreachable!("unexpanded macro in ast lowering");
+ }
+
+ fn visit_item(&mut self, _: &ast::Item) {
+ // Do not recurse into nested items.
+ }
+ }
+
+ let mut visitor = MayContainYieldPoint(false);
+ visitor.visit_expr(e);
+ visitor.0
+}
mod block;
mod errors;
mod expr;
+mod format;
mod index;
mod item;
mod lifetime_collector;
pub fn lower_to_hir(tcx: TyCtxt<'_>, (): ()) -> hir::Crate<'_> {
let sess = tcx.sess;
+ tcx.ensure().output_filenames(());
let (mut resolver, krate) = tcx.resolver_for_lowering(()).steal();
let ast_index = index_crate(&resolver.node_id_to_def_id, &krate);
[lib]
[dependencies]
-rustc_span = { path = "../rustc_span" }
rustc_ast = { path = "../rustc_ast" }
+rustc_parse_format = { path = "../rustc_parse_format" }
+rustc_span = { path = "../rustc_span" }
use rustc_ast::util::literal::escape_byte_str_symbol;
use rustc_ast::util::parser::{self, AssocOp, Fixity};
use rustc_ast::{self as ast, BlockCheckMode};
+use rustc_ast::{FormatAlignment, FormatArgPosition, FormatArgsPiece, FormatCount, FormatTrait};
+use std::fmt::Write;
impl<'a> State<'a> {
fn print_else(&mut self, els: Option<&ast::Expr>) {
}
}
ast::ExprKind::InlineAsm(a) => {
+ // FIXME: This should have its own syntax, distinct from a macro invocation.
self.word("asm!");
self.print_inline_asm(a);
}
+ ast::ExprKind::FormatArgs(fmt) => {
+ // FIXME: This should have its own syntax, distinct from a macro invocation.
+ self.word("format_args!");
+ self.popen();
+ self.rbox(0, Inconsistent);
+ self.word(reconstruct_format_args_template_string(&fmt.template));
+ for arg in fmt.arguments.all_args() {
+ self.word_space(",");
+ self.print_expr(&arg.expr);
+ }
+ self.end();
+ self.pclose();
+ }
ast::ExprKind::MacCall(m) => self.print_mac(m),
ast::ExprKind::Paren(e) => {
self.popen();
}
}
}
+
+pub fn reconstruct_format_args_template_string(pieces: &[FormatArgsPiece]) -> String {
+ let mut template = "\"".to_string();
+ for piece in pieces {
+ match piece {
+ FormatArgsPiece::Literal(s) => {
+ for c in s.as_str().escape_debug() {
+ template.push(c);
+ if let '{' | '}' = c {
+ template.push(c);
+ }
+ }
+ }
+ FormatArgsPiece::Placeholder(p) => {
+ template.push('{');
+ let (Ok(n) | Err(n)) = p.argument.index;
+ write!(template, "{n}").unwrap();
+ if p.format_options != Default::default() || p.format_trait != FormatTrait::Display
+ {
+ template.push_str(":");
+ }
+ if let Some(fill) = p.format_options.fill {
+ template.push(fill);
+ }
+ match p.format_options.alignment {
+ Some(FormatAlignment::Left) => template.push_str("<"),
+ Some(FormatAlignment::Right) => template.push_str(">"),
+ Some(FormatAlignment::Center) => template.push_str("^"),
+ None => {}
+ }
+ let flags = p.format_options.flags;
+ if flags >> (rustc_parse_format::FlagSignPlus as usize) & 1 != 0 {
+ template.push('+');
+ }
+ if flags >> (rustc_parse_format::FlagSignMinus as usize) & 1 != 0 {
+ template.push('-');
+ }
+ if flags >> (rustc_parse_format::FlagAlternate as usize) & 1 != 0 {
+ template.push('#');
+ }
+ if flags >> (rustc_parse_format::FlagSignAwareZeroPad as usize) & 1 != 0 {
+ template.push('0');
+ }
+ if let Some(width) = &p.format_options.width {
+ match width {
+ FormatCount::Literal(n) => write!(template, "{n}").unwrap(),
+ FormatCount::Argument(FormatArgPosition {
+ index: Ok(n) | Err(n), ..
+ }) => {
+ write!(template, "{n}$").unwrap();
+ }
+ }
+ }
+ if let Some(precision) = &p.format_options.precision {
+ template.push('.');
+ match precision {
+ FormatCount::Literal(n) => write!(template, "{n}").unwrap(),
+ FormatCount::Argument(FormatArgPosition {
+ index: Ok(n) | Err(n), ..
+ }) => {
+ write!(template, "{n}$").unwrap();
+ }
+ }
+ }
+ if flags >> (rustc_parse_format::FlagDebugLowerHex as usize) & 1 != 0 {
+ template.push('x');
+ }
+ if flags >> (rustc_parse_format::FlagDebugUpperHex as usize) & 1 != 0 {
+ template.push('X');
+ }
+ template.push_str(match p.format_trait {
+ FormatTrait::Display => "",
+ FormatTrait::Debug => "?",
+ FormatTrait::LowerExp => "e",
+ FormatTrait::UpperExp => "E",
+ FormatTrait::Octal => "o",
+ FormatTrait::Pointer => "p",
+ FormatTrait::Binary => "b",
+ FormatTrait::LowerHex => "x",
+ FormatTrait::UpperHex => "X",
+ });
+ template.push('}');
+ }
+ }
+ }
+ template.push('"');
+ template
+}
desc,
);
- err.span_label(borrow_span, format!("borrow of {} occurs here", borrow_desc));
+ err.span_label(borrow_span, format!("{} is borrowed here", borrow_desc));
err.span_label(span, format!("use of borrowed {}", borrow_desc));
err
}
desc,
);
- err.span_label(borrow_span, format!("borrow of {} occurs here", desc));
- err.span_label(span, format!("assignment to borrowed {} occurs here", desc));
+ err.span_label(borrow_span, format!("{} is borrowed here", desc));
+ err.span_label(span, format!("{} is assigned to here but it was already borrowed", desc));
err
}
let copy_did = infcx.tcx.require_lang_item(LangItem::Copy, Some(span));
let cause = ObligationCause::new(
span,
- self.mir_hir_id(),
+ self.mir_def_id(),
rustc_infer::traits::ObligationCauseCode::MiscObligation,
);
let errors = rustc_trait_selection::traits::fully_solve_bound(
&self.local_names,
&mut err,
"",
- None,
+ Some(borrow_span),
None,
);
}
//! Print diagnostics to explain why values are borrowed.
use rustc_errors::{Applicability, Diagnostic};
+use rustc_hir as hir;
+use rustc_hir::intravisit::Visitor;
use rustc_index::vec::IndexVec;
use rustc_infer::infer::NllRegionVariableOrigin;
use rustc_middle::mir::{
use rustc_middle::ty::{self, RegionVid, TyCtxt};
use rustc_span::symbol::{kw, Symbol};
use rustc_span::{sym, DesugaringKind, Span};
+use rustc_trait_selection::traits::error_reporting::FindExprBySpan;
use crate::region_infer::{BlameConstraint, ExtraConstraintInfo};
use crate::{
borrow_span: Option<Span>,
multiple_borrow_span: Option<(Span, Span)>,
) {
+ if let Some(span) = borrow_span {
+ let def_id = body.source.def_id();
+ if let Some(node) = tcx.hir().get_if_local(def_id)
+ && let Some(body_id) = node.body_id()
+ {
+ let body = tcx.hir().body(body_id);
+ let mut expr_finder = FindExprBySpan::new(span);
+ expr_finder.visit_expr(body.value);
+ if let Some(mut expr) = expr_finder.result {
+ while let hir::ExprKind::AddrOf(_, _, inner)
+ | hir::ExprKind::Unary(hir::UnOp::Deref, inner)
+ | hir::ExprKind::Field(inner, _)
+ | hir::ExprKind::MethodCall(_, inner, _, _)
+ | hir::ExprKind::Index(inner, _) = &expr.kind
+ {
+ expr = inner;
+ }
+ if let hir::ExprKind::Path(hir::QPath::Resolved(None, p)) = expr.kind
+ && let [hir::PathSegment { ident, args: None, .. }] = p.segments
+ && let hir::def::Res::Local(hir_id) = p.res
+ && let Some(hir::Node::Pat(pat)) = tcx.hir().find(hir_id)
+ {
+ err.span_label(
+ pat.span,
+ &format!("binding `{ident}` declared here"),
+ );
+ }
+ }
+ }
+ }
match *self {
BorrowExplanation::UsedLater(later_use_kind, var_or_use_span, path_span) => {
let message = match later_use_kind {
};
self.note_type_does_not_implement_copy(err, &place_desc, place_ty, Some(span), "");
- use_spans.args_span_label(err, format!("move out of {place_desc} occurs here"));
+ use_spans.args_span_label(err, format!("{place_desc} is moved here"));
}
}
}
if *outlived_f != ty::ReStatic {
return;
}
+ let suitable_region = self.infcx.tcx.is_suitable_region(f);
+ let Some(suitable_region) = suitable_region else { return; };
- let fn_returns = self
- .infcx
- .tcx
- .is_suitable_region(f)
- .map(|r| self.infcx.tcx.return_type_impl_or_dyn_traits(r.def_id))
- .unwrap_or_default();
-
- if fn_returns.is_empty() {
- return;
- }
+ let fn_returns = self.infcx.tcx.return_type_impl_or_dyn_traits(suitable_region.def_id);
let param = if let Some(param) = find_param_with_region(self.infcx.tcx, f, outlived_f) {
param
};
let captures = format!("captures data from {arg}");
- return nice_region_error::suggest_new_region_bound(
- self.infcx.tcx,
- diag,
- fn_returns,
- lifetime.to_string(),
- Some(arg),
- captures,
- Some((param.param_ty_span, param.param_ty.to_string())),
- self.infcx.tcx.is_suitable_region(f).map(|r| r.def_id),
+ if !fn_returns.is_empty() {
+ nice_region_error::suggest_new_region_bound(
+ self.infcx.tcx,
+ diag,
+ fn_returns,
+ lifetime.to_string(),
+ Some(arg),
+ captures,
+ Some((param.param_ty_span, param.param_ty.to_string())),
+ Some(suitable_region.def_id),
+ );
+ return;
+ }
+
+ let Some((alias_tys, alias_span)) = self
+ .infcx
+ .tcx
+ .return_type_impl_or_dyn_traits_with_type_alias(suitable_region.def_id) else { return; };
+
+ // in case the return type of the method is a type alias
+ let mut spans_suggs: Vec<_> = Vec::new();
+ for alias_ty in alias_tys {
+ if alias_ty.span.desugaring_kind().is_some() {
+ // Skip `async` desugaring `impl Future`.
+ ()
+ }
+ if let TyKind::TraitObject(_, lt, _) = alias_ty.kind {
+ spans_suggs.push((lt.ident.span.shrink_to_hi(), " + 'a".to_string()));
+ }
+ }
+ spans_suggs.push((alias_span.shrink_to_hi(), "<'a>".to_string()));
+ diag.multipart_suggestion_verbose(
+ &format!(
+ "to declare that the trait object {captures}, you can add a lifetime parameter `'a` in the type alias"
+ ),
+ spans_suggs,
+ Applicability::MaybeIncorrect,
);
}
}
use rustc_data_structures::graph::scc::Sccs;
use rustc_errors::Diagnostic;
use rustc_hir::def_id::CRATE_DEF_ID;
-use rustc_hir::CRATE_HIR_ID;
use rustc_index::vec::IndexVec;
use rustc_infer::infer::outlives::test_type_match;
use rustc_infer::infer::region_constraints::{GenericKind, VarInfos, VerifyBound, VerifyIfEq};
.map(|constraint| BlameConstraint {
category: constraint.category,
from_closure: constraint.from_closure,
- cause: ObligationCause::new(constraint.span, CRATE_HIR_ID, cause_code.clone()),
+ cause: ObligationCause::new(constraint.span, CRATE_DEF_ID, cause_code.clone()),
variance_info: constraint.variance_info,
outlives_constraint: *constraint,
})
// This logic duplicates most of `check_opaque_meets_bounds`.
// FIXME(oli-obk): Also do region checks here and then consider removing `check_opaque_meets_bounds` entirely.
let param_env = self.tcx.param_env(def_id);
- let body_id = self.tcx.local_def_id_to_hir_id(def_id);
// HACK This bubble is required for this tests to pass:
// type-alias-impl-trait/issue-67844-nested-opaque.rs
let infcx =
// the bounds that the function supplies.
let opaque_ty = self.tcx.mk_opaque(def_id.to_def_id(), id_substs);
if let Err(err) = ocx.eq(
- &ObligationCause::misc(instantiated_ty.span, body_id),
+ &ObligationCause::misc(instantiated_ty.span, def_id),
param_env,
opaque_ty,
definition_ty,
infcx
.err_ctxt()
.report_mismatched_types(
- &ObligationCause::misc(instantiated_ty.span, body_id),
+ &ObligationCause::misc(instantiated_ty.span, def_id),
opaque_ty,
definition_ty,
err,
ocx.register_obligation(Obligation::misc(
infcx.tcx,
instantiated_ty.span,
- body_id,
+ def_id,
param_env,
predicate,
));
for (i, arg) in opaque_type_key.substs.iter().enumerate() {
let arg_is_param = match arg.unpack() {
GenericArgKind::Type(ty) => matches!(ty.kind(), ty::Param(_)),
- GenericArgKind::Lifetime(lt) if lt.is_static() => {
- tcx.sess
- .struct_span_err(span, "non-defining opaque type use in defining scope")
- .span_label(
- tcx.def_span(opaque_generics.param_at(i, tcx).def_id),
- "cannot use static lifetime; use a bound lifetime \
- instead or remove the lifetime parameter from the \
- opaque type",
- )
- .emit();
- return false;
- }
GenericArgKind::Lifetime(lt) => {
matches!(*lt, ty::ReEarlyBound(_) | ty::ReFree(_))
}
| ExprKind::Continue(_)
| ExprKind::Err
| ExprKind::Field(_, _)
+ | ExprKind::FormatArgs(_)
| ExprKind::ForLoop(_, _, _, _)
| ExprKind::If(_, _, _)
| ExprKind::IncludedBytes(..)
use rustc_ast::ptr::P;
use rustc_ast::token;
use rustc_ast::tokenstream::TokenStream;
-use rustc_ast::Expr;
+use rustc_ast::{
+ Expr, ExprKind, FormatAlignment, FormatArgPosition, FormatArgPositionKind, FormatArgs,
+ FormatArgsPiece, FormatArgument, FormatArgumentKind, FormatArguments, FormatCount,
+ FormatOptions, FormatPlaceholder, FormatTrait,
+};
use rustc_data_structures::fx::FxHashSet;
use rustc_errors::{pluralize, Applicability, MultiSpan, PResult};
use rustc_expand::base::{self, *};
use rustc_lint_defs::builtin::NAMED_ARGUMENTS_USED_POSITIONALLY;
use rustc_lint_defs::{BufferedEarlyLint, BuiltinLintDiagnostics, LintId};
-mod ast;
-use ast::*;
-
-mod expand;
-use expand::expand_parsed_format_args;
-
// The format_args!() macro is expanded in three steps:
// 1. First, `parse_args` will parse the `(literal, arg, arg, name=arg, name=arg)` syntax,
// but doesn't parse the template (the literal) itself.
// 2. Second, `make_format_args` will parse the template, the format options, resolve argument references,
-// produce diagnostics, and turn the whole thing into a `FormatArgs` structure.
-// 3. Finally, `expand_parsed_format_args` will turn that `FormatArgs` structure
-// into the expression that the macro expands to.
+// produce diagnostics, and turn the whole thing into a `FormatArgs` AST node.
+// 3. Much later, in AST lowering (rustc_ast_lowering), that `FormatArgs` structure will be turned
+// into the expression of type `core::fmt::Arguments`.
-// See format/ast.rs for the FormatArgs structure and glossary.
+// See rustc_ast/src/format.rs for the FormatArgs structure and glossary.
// Only used in parse_args and report_invalid_references,
// to indicate how a referred argument was used.
match parse_args(ecx, sp, tts) {
Ok((efmt, args)) => {
if let Ok(format_args) = make_format_args(ecx, efmt, args, nl) {
- MacEager::expr(expand_parsed_format_args(ecx, format_args))
+ MacEager::expr(ecx.expr(sp, ExprKind::FormatArgs(P(format_args))))
} else {
MacEager::expr(DummyResult::raw_expr(sp, true))
}
+++ /dev/null
-use rustc_ast::ptr::P;
-use rustc_ast::Expr;
-use rustc_data_structures::fx::FxHashMap;
-use rustc_span::symbol::{Ident, Symbol};
-use rustc_span::Span;
-
-// Definitions:
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └──────────────────────────────────────────────┘
-// FormatArgs
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └─────────┘
-// argument
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └───────────────────┘
-// template
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └────┘└─────────┘└┘
-// pieces
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └────┘ └┘
-// literal pieces
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └─────────┘
-// placeholder
-//
-// format_args!("hello {abc:.xyz$}!!", abc="world");
-// └─┘ └─┘
-// positions (could be names, numbers, empty, or `*`)
-
-/// (Parsed) format args.
-///
-/// Basically the "AST" for a complete `format_args!()`.
-///
-/// E.g., `format_args!("hello {name}");`.
-#[derive(Clone, Debug)]
-pub struct FormatArgs {
- pub span: Span,
- pub template: Vec<FormatArgsPiece>,
- pub arguments: FormatArguments,
-}
-
-/// A piece of a format template string.
-///
-/// E.g. "hello" or "{name}".
-#[derive(Clone, Debug)]
-pub enum FormatArgsPiece {
- Literal(Symbol),
- Placeholder(FormatPlaceholder),
-}
-
-/// The arguments to format_args!().
-///
-/// E.g. `1, 2, name="ferris", n=3`,
-/// but also implicit captured arguments like `x` in `format_args!("{x}")`.
-#[derive(Clone, Debug)]
-pub struct FormatArguments {
- arguments: Vec<FormatArgument>,
- num_unnamed_args: usize,
- num_explicit_args: usize,
- names: FxHashMap<Symbol, usize>,
-}
-
-impl FormatArguments {
- pub fn new() -> Self {
- Self {
- arguments: Vec::new(),
- names: FxHashMap::default(),
- num_unnamed_args: 0,
- num_explicit_args: 0,
- }
- }
-
- pub fn add(&mut self, arg: FormatArgument) -> usize {
- let index = self.arguments.len();
- if let Some(name) = arg.kind.ident() {
- self.names.insert(name.name, index);
- } else if self.names.is_empty() {
- // Only count the unnamed args before the first named arg.
- // (Any later ones are errors.)
- self.num_unnamed_args += 1;
- }
- if !matches!(arg.kind, FormatArgumentKind::Captured(..)) {
- // This is an explicit argument.
- // Make sure that all arguments so far are explcit.
- assert_eq!(
- self.num_explicit_args,
- self.arguments.len(),
- "captured arguments must be added last"
- );
- self.num_explicit_args += 1;
- }
- self.arguments.push(arg);
- index
- }
-
- pub fn by_name(&self, name: Symbol) -> Option<(usize, &FormatArgument)> {
- let i = *self.names.get(&name)?;
- Some((i, &self.arguments[i]))
- }
-
- pub fn by_index(&self, i: usize) -> Option<&FormatArgument> {
- (i < self.num_explicit_args).then(|| &self.arguments[i])
- }
-
- pub fn unnamed_args(&self) -> &[FormatArgument] {
- &self.arguments[..self.num_unnamed_args]
- }
-
- pub fn named_args(&self) -> &[FormatArgument] {
- &self.arguments[self.num_unnamed_args..self.num_explicit_args]
- }
-
- pub fn explicit_args(&self) -> &[FormatArgument] {
- &self.arguments[..self.num_explicit_args]
- }
-
- pub fn into_vec(self) -> Vec<FormatArgument> {
- self.arguments
- }
-}
-
-#[derive(Clone, Debug)]
-pub struct FormatArgument {
- pub kind: FormatArgumentKind,
- pub expr: P<Expr>,
-}
-
-#[derive(Clone, Debug)]
-pub enum FormatArgumentKind {
- /// `format_args(…, arg)`
- Normal,
- /// `format_args(…, arg = 1)`
- Named(Ident),
- /// `format_args("… {arg} …")`
- Captured(Ident),
-}
-
-impl FormatArgumentKind {
- pub fn ident(&self) -> Option<Ident> {
- match self {
- &Self::Normal => None,
- &Self::Named(id) => Some(id),
- &Self::Captured(id) => Some(id),
- }
- }
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct FormatPlaceholder {
- /// Index into [`FormatArgs::arguments`].
- pub argument: FormatArgPosition,
- /// The span inside the format string for the full `{…}` placeholder.
- pub span: Option<Span>,
- /// `{}`, `{:?}`, or `{:x}`, etc.
- pub format_trait: FormatTrait,
- /// `{}` or `{:.5}` or `{:-^20}`, etc.
- pub format_options: FormatOptions,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub struct FormatArgPosition {
- /// Which argument this position refers to (Ok),
- /// or would've referred to if it existed (Err).
- pub index: Result<usize, usize>,
- /// What kind of position this is. See [`FormatArgPositionKind`].
- pub kind: FormatArgPositionKind,
- /// The span of the name or number.
- pub span: Option<Span>,
-}
-
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
-pub enum FormatArgPositionKind {
- /// `{}` or `{:.*}`
- Implicit,
- /// `{1}` or `{:1$}` or `{:.1$}`
- Number,
- /// `{a}` or `{:a$}` or `{:.a$}`
- Named,
-}
-
-#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq)]
-pub enum FormatTrait {
- /// `{}`
- Display,
- /// `{:?}`
- Debug,
- /// `{:e}`
- LowerExp,
- /// `{:E}`
- UpperExp,
- /// `{:o}`
- Octal,
- /// `{:p}`
- Pointer,
- /// `{:b}`
- Binary,
- /// `{:x}`
- LowerHex,
- /// `{:X}`
- UpperHex,
-}
-
-#[derive(Clone, Debug, Default, PartialEq, Eq)]
-pub struct FormatOptions {
- /// The width. E.g. `{:5}` or `{:width$}`.
- pub width: Option<FormatCount>,
- /// The precision. E.g. `{:.5}` or `{:.precision$}`.
- pub precision: Option<FormatCount>,
- /// The alignment. E.g. `{:>}` or `{:<}` or `{:^}`.
- pub alignment: Option<FormatAlignment>,
- /// The fill character. E.g. the `.` in `{:.>10}`.
- pub fill: Option<char>,
- /// The `+`, `-`, `0`, `#`, `x?` and `X?` flags.
- pub flags: u32,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum FormatAlignment {
- /// `{:<}`
- Left,
- /// `{:>}`
- Right,
- /// `{:^}`
- Center,
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum FormatCount {
- /// `{:5}` or `{:.5}`
- Literal(usize),
- /// `{:.*}`, `{:.5$}`, or `{:a$}`, etc.
- Argument(FormatArgPosition),
-}
+++ /dev/null
-use super::*;
-use rustc_ast as ast;
-use rustc_ast::visit::{self, Visitor};
-use rustc_ast::{BlockCheckMode, UnsafeSource};
-use rustc_data_structures::fx::FxIndexSet;
-use rustc_span::{sym, symbol::kw};
-
-#[derive(Copy, Clone, Debug, Hash, PartialEq, Eq)]
-enum ArgumentType {
- Format(FormatTrait),
- Usize,
-}
-
-fn make_argument(ecx: &ExtCtxt<'_>, sp: Span, arg: P<ast::Expr>, ty: ArgumentType) -> P<ast::Expr> {
- // Generate:
- // ::core::fmt::ArgumentV1::new_…(arg)
- use ArgumentType::*;
- use FormatTrait::*;
- ecx.expr_call_global(
- sp,
- ecx.std_path(&[
- sym::fmt,
- sym::ArgumentV1,
- match ty {
- Format(Display) => sym::new_display,
- Format(Debug) => sym::new_debug,
- Format(LowerExp) => sym::new_lower_exp,
- Format(UpperExp) => sym::new_upper_exp,
- Format(Octal) => sym::new_octal,
- Format(Pointer) => sym::new_pointer,
- Format(Binary) => sym::new_binary,
- Format(LowerHex) => sym::new_lower_hex,
- Format(UpperHex) => sym::new_upper_hex,
- Usize => sym::from_usize,
- },
- ]),
- vec![arg],
- )
-}
-
-fn make_count(
- ecx: &ExtCtxt<'_>,
- sp: Span,
- count: &Option<FormatCount>,
- argmap: &mut FxIndexSet<(usize, ArgumentType)>,
-) -> P<ast::Expr> {
- // Generate:
- // ::core::fmt::rt::v1::Count::…(…)
- match count {
- Some(FormatCount::Literal(n)) => ecx.expr_call_global(
- sp,
- ecx.std_path(&[sym::fmt, sym::rt, sym::v1, sym::Count, sym::Is]),
- vec![ecx.expr_usize(sp, *n)],
- ),
- Some(FormatCount::Argument(arg)) => {
- if let Ok(arg_index) = arg.index {
- let (i, _) = argmap.insert_full((arg_index, ArgumentType::Usize));
- ecx.expr_call_global(
- sp,
- ecx.std_path(&[sym::fmt, sym::rt, sym::v1, sym::Count, sym::Param]),
- vec![ecx.expr_usize(sp, i)],
- )
- } else {
- DummyResult::raw_expr(sp, true)
- }
- }
- None => ecx.expr_path(ecx.path_global(
- sp,
- ecx.std_path(&[sym::fmt, sym::rt, sym::v1, sym::Count, sym::Implied]),
- )),
- }
-}
-
-fn make_format_spec(
- ecx: &ExtCtxt<'_>,
- sp: Span,
- placeholder: &FormatPlaceholder,
- argmap: &mut FxIndexSet<(usize, ArgumentType)>,
-) -> P<ast::Expr> {
- // Generate:
- // ::core::fmt::rt::v1::Argument {
- // position: 0usize,
- // format: ::core::fmt::rt::v1::FormatSpec {
- // fill: ' ',
- // align: ::core::fmt::rt::v1::Alignment::Unknown,
- // flags: 0u32,
- // precision: ::core::fmt::rt::v1::Count::Implied,
- // width: ::core::fmt::rt::v1::Count::Implied,
- // },
- // }
- let position = match placeholder.argument.index {
- Ok(arg_index) => {
- let (i, _) =
- argmap.insert_full((arg_index, ArgumentType::Format(placeholder.format_trait)));
- ecx.expr_usize(sp, i)
- }
- Err(_) => DummyResult::raw_expr(sp, true),
- };
- let fill = ecx.expr_char(sp, placeholder.format_options.fill.unwrap_or(' '));
- let align = ecx.expr_path(ecx.path_global(
- sp,
- ecx.std_path(&[
- sym::fmt,
- sym::rt,
- sym::v1,
- sym::Alignment,
- match placeholder.format_options.alignment {
- Some(FormatAlignment::Left) => sym::Left,
- Some(FormatAlignment::Right) => sym::Right,
- Some(FormatAlignment::Center) => sym::Center,
- None => sym::Unknown,
- },
- ]),
- ));
- let flags = ecx.expr_u32(sp, placeholder.format_options.flags);
- let prec = make_count(ecx, sp, &placeholder.format_options.precision, argmap);
- let width = make_count(ecx, sp, &placeholder.format_options.width, argmap);
- ecx.expr_struct(
- sp,
- ecx.path_global(sp, ecx.std_path(&[sym::fmt, sym::rt, sym::v1, sym::Argument])),
- vec![
- ecx.field_imm(sp, Ident::new(sym::position, sp), position),
- ecx.field_imm(
- sp,
- Ident::new(sym::format, sp),
- ecx.expr_struct(
- sp,
- ecx.path_global(
- sp,
- ecx.std_path(&[sym::fmt, sym::rt, sym::v1, sym::FormatSpec]),
- ),
- vec![
- ecx.field_imm(sp, Ident::new(sym::fill, sp), fill),
- ecx.field_imm(sp, Ident::new(sym::align, sp), align),
- ecx.field_imm(sp, Ident::new(sym::flags, sp), flags),
- ecx.field_imm(sp, Ident::new(sym::precision, sp), prec),
- ecx.field_imm(sp, Ident::new(sym::width, sp), width),
- ],
- ),
- ),
- ],
- )
-}
-
-pub fn expand_parsed_format_args(ecx: &mut ExtCtxt<'_>, fmt: FormatArgs) -> P<ast::Expr> {
- let macsp = ecx.with_def_site_ctxt(ecx.call_site());
-
- let lit_pieces = ecx.expr_array_ref(
- fmt.span,
- fmt.template
- .iter()
- .enumerate()
- .filter_map(|(i, piece)| match piece {
- &FormatArgsPiece::Literal(s) => Some(ecx.expr_str(fmt.span, s)),
- &FormatArgsPiece::Placeholder(_) => {
- // Inject empty string before placeholders when not already preceded by a literal piece.
- if i == 0 || matches!(fmt.template[i - 1], FormatArgsPiece::Placeholder(_)) {
- Some(ecx.expr_str(fmt.span, kw::Empty))
- } else {
- None
- }
- }
- })
- .collect(),
- );
-
- // Whether we'll use the `Arguments::new_v1_formatted` form (true),
- // or the `Arguments::new_v1` form (false).
- let mut use_format_options = false;
-
- // Create a list of all _unique_ (argument, format trait) combinations.
- // E.g. "{0} {0:x} {0} {1}" -> [(0, Display), (0, LowerHex), (1, Display)]
- let mut argmap = FxIndexSet::default();
- for piece in &fmt.template {
- let FormatArgsPiece::Placeholder(placeholder) = piece else { continue };
- if placeholder.format_options != Default::default() {
- // Can't use basic form if there's any formatting options.
- use_format_options = true;
- }
- if let Ok(index) = placeholder.argument.index {
- if !argmap.insert((index, ArgumentType::Format(placeholder.format_trait))) {
- // Duplicate (argument, format trait) combination,
- // which we'll only put once in the args array.
- use_format_options = true;
- }
- }
- }
-
- let format_options = use_format_options.then(|| {
- // Generate:
- // &[format_spec_0, format_spec_1, format_spec_2]
- ecx.expr_array_ref(
- macsp,
- fmt.template
- .iter()
- .filter_map(|piece| {
- let FormatArgsPiece::Placeholder(placeholder) = piece else { return None };
- Some(make_format_spec(ecx, macsp, placeholder, &mut argmap))
- })
- .collect(),
- )
- });
-
- let arguments = fmt.arguments.into_vec();
-
- // If the args array contains exactly all the original arguments once,
- // in order, we can use a simple array instead of a `match` construction.
- // However, if there's a yield point in any argument except the first one,
- // we don't do this, because an ArgumentV1 cannot be kept across yield points.
- let use_simple_array = argmap.len() == arguments.len()
- && argmap.iter().enumerate().all(|(i, &(j, _))| i == j)
- && arguments.iter().skip(1).all(|arg| !may_contain_yield_point(&arg.expr));
-
- let args = if use_simple_array {
- // Generate:
- // &[
- // ::core::fmt::ArgumentV1::new_display(&arg0),
- // ::core::fmt::ArgumentV1::new_lower_hex(&arg1),
- // ::core::fmt::ArgumentV1::new_debug(&arg2),
- // ]
- ecx.expr_array_ref(
- macsp,
- arguments
- .into_iter()
- .zip(argmap)
- .map(|(arg, (_, ty))| {
- let sp = arg.expr.span.with_ctxt(macsp.ctxt());
- make_argument(ecx, sp, ecx.expr_addr_of(sp, arg.expr), ty)
- })
- .collect(),
- )
- } else {
- // Generate:
- // match (&arg0, &arg1, &arg2) {
- // args => &[
- // ::core::fmt::ArgumentV1::new_display(args.0),
- // ::core::fmt::ArgumentV1::new_lower_hex(args.1),
- // ::core::fmt::ArgumentV1::new_debug(args.0),
- // ]
- // }
- let args_ident = Ident::new(sym::args, macsp);
- let args = argmap
- .iter()
- .map(|&(arg_index, ty)| {
- if let Some(arg) = arguments.get(arg_index) {
- let sp = arg.expr.span.with_ctxt(macsp.ctxt());
- make_argument(
- ecx,
- sp,
- ecx.expr_field(
- sp,
- ecx.expr_ident(macsp, args_ident),
- Ident::new(sym::integer(arg_index), macsp),
- ),
- ty,
- )
- } else {
- DummyResult::raw_expr(macsp, true)
- }
- })
- .collect();
- ecx.expr_addr_of(
- macsp,
- ecx.expr_match(
- macsp,
- ecx.expr_tuple(
- macsp,
- arguments
- .into_iter()
- .map(|arg| {
- ecx.expr_addr_of(arg.expr.span.with_ctxt(macsp.ctxt()), arg.expr)
- })
- .collect(),
- ),
- vec![ecx.arm(macsp, ecx.pat_ident(macsp, args_ident), ecx.expr_array(macsp, args))],
- ),
- )
- };
-
- if let Some(format_options) = format_options {
- // Generate:
- // ::core::fmt::Arguments::new_v1_formatted(
- // lit_pieces,
- // args,
- // format_options,
- // unsafe { ::core::fmt::UnsafeArg::new() }
- // )
- ecx.expr_call_global(
- macsp,
- ecx.std_path(&[sym::fmt, sym::Arguments, sym::new_v1_formatted]),
- vec![
- lit_pieces,
- args,
- format_options,
- ecx.expr_block(P(ast::Block {
- stmts: vec![ecx.stmt_expr(ecx.expr_call_global(
- macsp,
- ecx.std_path(&[sym::fmt, sym::UnsafeArg, sym::new]),
- Vec::new(),
- ))],
- id: ast::DUMMY_NODE_ID,
- rules: BlockCheckMode::Unsafe(UnsafeSource::CompilerGenerated),
- span: macsp,
- tokens: None,
- could_be_bare_literal: false,
- })),
- ],
- )
- } else {
- // Generate:
- // ::core::fmt::Arguments::new_v1(
- // lit_pieces,
- // args,
- // )
- ecx.expr_call_global(
- macsp,
- ecx.std_path(&[sym::fmt, sym::Arguments, sym::new_v1]),
- vec![lit_pieces, args],
- )
- }
-}
-
-fn may_contain_yield_point(e: &ast::Expr) -> bool {
- struct MayContainYieldPoint(bool);
-
- impl Visitor<'_> for MayContainYieldPoint {
- fn visit_expr(&mut self, e: &ast::Expr) {
- if let ast::ExprKind::Await(_) | ast::ExprKind::Yield(_) = e.kind {
- self.0 = true;
- } else {
- visit::walk_expr(self, e);
- }
- }
-
- fn visit_mac_call(&mut self, _: &ast::MacCall) {
- self.0 = true;
- }
-
- fn visit_attribute(&mut self, _: &ast::Attribute) {
- // Conservatively assume this may be a proc macro attribute in
- // expression position.
- self.0 = true;
- }
-
- fn visit_item(&mut self, _: &ast::Item) {
- // Do not recurse into nested items.
- }
- }
-
- let mut visitor = MayContainYieldPoint(false);
- visitor.visit_expr(e);
- visitor.0
-}
task:
name: freebsd
freebsd_instance:
- image: freebsd-12-1-release-amd64
+ image: freebsd-13-1-release-amd64
setup_rust_script:
- pkg install -y curl git bash
- curl https://sh.rustup.rs -sSf --output rustup.sh
- sh rustup.sh --default-toolchain none -y --profile=minimal
- cargo_bin_cache:
- folder: ~/.cargo/bin
target_cache:
folder: target
prepare_script:
- ./y.rs prepare
test_script:
- . $HOME/.cargo/env
- - # Enable backtraces for easier debugging
- - export RUST_BACKTRACE=1
- - # Reduce amount of benchmark runs as they are slow
- - export COMPILE_RUNS=2
- - export RUN_RUNS=2
- ./y.rs test
runs-on: ${{ matrix.os }}
timeout-minutes: 60
+ defaults:
+ run:
+ shell: bash
+
strategy:
fail-fast: false
matrix:
- os: ubuntu-latest
env:
TARGET_TRIPLE: s390x-unknown-linux-gnu
+ - os: windows-latest
+ env:
+ TARGET_TRIPLE: x86_64-pc-windows-msvc
+ - os: windows-latest
+ env:
+ TARGET_TRIPLE: x86_64-pc-windows-gnu
steps:
- uses: actions/checkout@v3
- - name: Cache cargo installed crates
- uses: actions/cache@v3
- with:
- path: ~/.cargo/bin
- key: ${{ runner.os }}-cargo-installed-crates
-
- - name: Cache cargo registry and index
- uses: actions/cache@v3
- with:
- path: |
- ~/.cargo/registry
- ~/.cargo/git
- key: ${{ runner.os }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
- name: Cache cargo target dir
uses: actions/cache@v3
with:
path: build/cg_clif
- key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+ key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
+
+ - name: Set MinGW as the default toolchain
+ if: matrix.os == 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
+ run: rustup set default-host x86_64-pc-windows-gnu
- name: Install MinGW toolchain and wine
if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
run: |
sudo apt-get update
sudo apt-get install -y gcc-mingw-w64-x86-64 wine-stable
- rustup target add x86_64-pc-windows-gnu
- name: Install AArch64 toolchain and qemu
if: matrix.os == 'ubuntu-latest' && matrix.env.TARGET_TRIPLE == 'aarch64-unknown-linux-gnu'
sudo apt-get update
sudo apt-get install -y gcc-s390x-linux-gnu qemu-user
+ - name: Use sparse cargo registry
+ run: |
+ cat >> ~/.cargo/config.toml <<EOF
+ [unstable]
+ sparse-registry = true
+ EOF
+
- name: Prepare dependencies
run: ./y.rs prepare
- name: Test
env:
TARGET_TRIPLE: ${{ matrix.env.TARGET_TRIPLE }}
- run: |
- # Enable backtraces for easier debugging
- export RUST_BACKTRACE=1
-
- # Reduce amount of benchmark runs as they are slow
- export COMPILE_RUNS=2
- export RUN_RUNS=2
-
- # Enable extra checks
- export CG_CLIF_ENABLE_VERIFIER=1
-
- ./y.rs test
+ run: ./y.rs test
- name: Package prebuilt cg_clif
run: tar cvfJ cg_clif.tar.xz dist
- name: Upload prebuilt cg_clif
- if: matrix.env.TARGET_TRIPLE != 'x86_64-pc-windows-gnu'
- uses: actions/upload-artifact@v2
+ if: matrix.os == 'windows-latest' || matrix.env.TARGET_TRIPLE != 'x86_64-pc-windows-gnu'
+ uses: actions/upload-artifact@v3
with:
name: cg_clif-${{ matrix.env.TARGET_TRIPLE }}
path: cg_clif.tar.xz
- name: Upload prebuilt cg_clif (cross compile)
- if: matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
+ if: matrix.os != 'windows-latest' && matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
uses: actions/upload-artifact@v3
with:
name: cg_clif-${{ runner.os }}-cross-x86_64-mingw
path: cg_clif.tar.xz
- windows:
+
+ abi_cafe:
runs-on: ${{ matrix.os }}
timeout-minutes: 60
+ defaults:
+ run:
+ shell: bash
+
strategy:
- fail-fast: false
+ fail-fast: true
matrix:
include:
- # Native Windows build with MSVC
+ - os: ubuntu-latest
+ env:
+ TARGET_TRIPLE: x86_64-unknown-linux-gnu
+ - os: macos-latest
+ env:
+ TARGET_TRIPLE: x86_64-apple-darwin
- os: windows-latest
env:
TARGET_TRIPLE: x86_64-pc-windows-msvc
- # cross-compile from Windows to Windows MinGW
- os: windows-latest
env:
TARGET_TRIPLE: x86_64-pc-windows-gnu
steps:
- uses: actions/checkout@v3
- - name: Cache cargo installed crates
- uses: actions/cache@v3
- with:
- path: ~/.cargo/bin
- key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-installed-crates
-
- - name: Cache cargo registry and index
- uses: actions/cache@v3
- with:
- path: |
- ~/.cargo/registry
- ~/.cargo/git
- key: ${{ runner.os }}-${{ matrix.env.TARGET_TRIPLE }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
- name: Cache cargo target dir
uses: actions/cache@v3
with:
if: matrix.env.TARGET_TRIPLE == 'x86_64-pc-windows-gnu'
run: rustup set default-host x86_64-pc-windows-gnu
- - name: Prepare dependencies
+ - name: Use sparse cargo registry
run: |
- git config --global core.autocrlf false
- rustc y.rs -o y.exe -g
- ./y.exe prepare
+ cat >> ~/.cargo/config.toml <<EOF
+ [unstable]
+ sparse-registry = true
+ EOF
- - name: Build without unstable features
- env:
- TARGET_TRIPLE: ${{ matrix.env.TARGET_TRIPLE }}
- # This is the config rust-lang/rust uses for builds
- run: ./y.rs build --no-unstable-features
+ - name: Prepare dependencies
+ run: ./y.rs prepare
- name: Build
run: ./y.rs build --sysroot none
- - name: Test
- run: |
- # Enable backtraces for easier debugging
- $Env:RUST_BACKTRACE=1
-
- # Reduce amount of benchmark runs as they are slow
- $Env:COMPILE_RUNS=2
- $Env:RUN_RUNS=2
-
- # Enable extra checks
- $Env:CG_CLIF_ENABLE_VERIFIER=1
-
- # WIP Disable some tests
-
- # This fails due to some weird argument handling by hyperfine, not an actual regression
- # more of a build system issue
- (Get-Content config.txt) -replace '(bench.simple-raytracer)', '# $1' | Out-File config.txt
-
- # This fails with a different output than expected
- (Get-Content config.txt) -replace '(test.regex-shootout-regex-dna)', '# $1' | Out-File config.txt
-
- ./y.exe test
-
- - name: Package prebuilt cg_clif
- # don't use compression as xzip isn't supported by tar on windows and bzip2 hangs
- run: tar cvf cg_clif.tar dist
-
- - name: Upload prebuilt cg_clif
- uses: actions/upload-artifact@v3
- with:
- name: cg_clif-${{ matrix.env.TARGET_TRIPLE }}
- path: cg_clif.tar
+ - name: Test abi-cafe
+ env:
+ TARGET_TRIPLE: ${{ matrix.env.TARGET_TRIPLE }}
+ run: ./y.rs abi-cafe
+++ /dev/null
-name: Test nightly Cranelift
-
-on:
- push:
- schedule:
- - cron: '17 1 * * *' # At 01:17 UTC every day.
-
-jobs:
- build:
- runs-on: ubuntu-latest
- timeout-minutes: 60
-
- steps:
- - uses: actions/checkout@v3
-
- - name: Cache cargo installed crates
- uses: actions/cache@v3
- with:
- path: ~/.cargo/bin
- key: ubuntu-latest-cargo-installed-crates
-
- - name: Prepare dependencies
- run: |
- git config --global user.email "user@example.com"
- git config --global user.name "User"
- ./y.rs prepare
-
- - name: Patch Cranelift
- run: |
- sed -i 's/cranelift-codegen = { version = "\w*.\w*.\w*", features = \["unwind", "all-arch"\] }/cranelift-codegen = { git = "https:\/\/github.com\/bytecodealliance\/wasmtime.git", features = ["unwind", "all-arch"] }/' Cargo.toml
- sed -i 's/cranelift-frontend = "\w*.\w*.\w*"/cranelift-frontend = { git = "https:\/\/github.com\/bytecodealliance\/wasmtime.git" }/' Cargo.toml
- sed -i 's/cranelift-module = "\w*.\w*.\w*"/cranelift-module = { git = "https:\/\/github.com\/bytecodealliance\/wasmtime.git" }/' Cargo.toml
- sed -i 's/cranelift-native = "\w*.\w*.\w*"/cranelift-native = { git = "https:\/\/github.com\/bytecodealliance\/wasmtime.git" }/' Cargo.toml
- sed -i 's/cranelift-jit = { version = "\w*.\w*.\w*", optional = true }/cranelift-jit = { git = "https:\/\/github.com\/bytecodealliance\/wasmtime.git", optional = true }/' Cargo.toml
- sed -i 's/cranelift-object = "\w*.\w*.\w*"/cranelift-object = { git = "https:\/\/github.com\/bytecodealliance\/wasmtime.git" }/' Cargo.toml
-
- sed -i 's/object = { version = "0.27.0"/object = { version = "0.28.0"/' Cargo.toml
-
- cat Cargo.toml
-
- - name: Build without unstable features
- # This is the config rust-lang/rust uses for builds
- run: ./y.rs build --no-unstable-features
-
- - name: Build
- run: ./y.rs build --sysroot none
- - name: Test
- run: |
- # Enable backtraces for easier debugging
- export RUST_BACKTRACE=1
-
- # Reduce amount of benchmark runs as they are slow
- export COMPILE_RUNS=2
- export RUN_RUNS=2
-
- # Enable extra checks
- export CG_CLIF_ENABLE_VERIFIER=1
-
- ./test.sh
steps:
- uses: actions/checkout@v3
- - name: Cache cargo installed crates
- uses: actions/cache@v3
- with:
- path: ~/.cargo/bin
- key: ${{ runner.os }}-cargo-installed-crates
-
- - name: Cache cargo registry and index
- uses: actions/cache@v3
- with:
- path: |
- ~/.cargo/registry
- ~/.cargo/git
- key: ${{ runner.os }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
- name: Cache cargo target dir
uses: actions/cache@v3
with:
path: build/cg_clif
key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
- - name: Prepare dependencies
+ - name: Use sparse cargo registry
run: |
- git config --global user.email "user@example.com"
- git config --global user.name "User"
- ./y.rs prepare
+ cat >> ~/.cargo/config.toml <<EOF
+ [unstable]
+ sparse-registry = true
+ EOF
- - name: Test
- run: |
- # Enable backtraces for easier debugging
- export RUST_BACKTRACE=1
+ - name: Prepare dependencies
+ run: ./y.rs prepare
- ./scripts/test_bootstrap.sh
+ - name: Test
+ run: ./scripts/test_bootstrap.sh
rustc_test_suite:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- - name: Cache cargo installed crates
- uses: actions/cache@v3
- with:
- path: ~/.cargo/bin
- key: ${{ runner.os }}-cargo-installed-crates
-
- - name: Cache cargo registry and index
- uses: actions/cache@v3
- with:
- path: |
- ~/.cargo/registry
- ~/.cargo/git
- key: ${{ runner.os }}-cargo-registry-and-index-${{ hashFiles('**/Cargo.lock') }}
-
- name: Cache cargo target dir
uses: actions/cache@v3
with:
path: build/cg_clif
key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('rust-toolchain', '**/Cargo.lock') }}
- - name: Prepare dependencies
+ - name: Use sparse cargo registry
run: |
- git config --global user.email "user@example.com"
- git config --global user.name "User"
- ./y.rs prepare
+ cat >> ~/.cargo/config.toml <<EOF
+ [unstable]
+ sparse-registry = true
+ EOF
- - name: Test
- run: |
- # Enable backtraces for easier debugging
- export RUST_BACKTRACE=1
+ - name: Prepare dependencies
+ run: ./y.rs prepare
- ./scripts/test_rustc_tests.sh
+ - name: Test
+ run: ./scripts/test_rustc_tests.sh
-target
+/target
**/*.rs.bk
*.rlib
*.o
/y.exe
/y.pdb
/build
-/build_sysroot/sysroot_src
-/build_sysroot/compiler-builtins
-/build_sysroot/rustc_version
/dist
/rust
/download
{
+ "editor.formatOnSave": true,
+
// source for rustc_* is not included in the rust-src component; disable the errors about this
"rust-analyzer.diagnostics.disabled": ["unresolved-extern-crate", "unresolved-macro-call"],
"rust-analyzer.imports.granularity.enforce": true,
]
},
{
- "sysroot_src": "./build_sysroot/sysroot_src/library",
+ "sysroot_src": "./download/sysroot/sysroot_src/library",
"crates": [
{
"root_module": "./example/std_example.rs",
[[package]]
name = "cranelift-bforest"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b62c772976416112fa4484cbd688cb6fb35fd430005c1c586224fc014018abad"
+checksum = "2f3d54eab028f5805ae3b26fd60eca3f3a9cfb76b989d9bab173be3f61356cc3"
dependencies = [
"cranelift-entity",
]
[[package]]
name = "cranelift-codegen"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b40ed2dd13c2ac7e24f88a3090c68ad3414eb1d066a95f8f1f7b3b819cb4e46"
+checksum = "2be1d5f2c3cca1efb691844bc1988b89c77291f13f778499a3f3c0cf49c0ed61"
dependencies = [
"arrayvec",
"bumpalo",
"cranelift-bforest",
"cranelift-codegen-meta",
"cranelift-codegen-shared",
- "cranelift-egraph",
"cranelift-entity",
"cranelift-isle",
"gimli",
+ "hashbrown",
"log",
"regalloc2",
"smallvec",
[[package]]
name = "cranelift-codegen-meta"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb927a8f1c27c34ee3759b6b0ffa528d2330405d5cc4511f0cab33fe2279f4b5"
+checksum = "3f9b1b1089750ce4005893af7ee00bb08a2cf1c9779999c0f7164cbc8ad2e0d2"
dependencies = [
"cranelift-codegen-shared",
]
[[package]]
name = "cranelift-codegen-shared"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43dfa417b884a9ab488d95fd6b93b25e959321fe7bfd7a0a960ba5d7fb7ab927"
-
-[[package]]
-name = "cranelift-egraph"
-version = "0.90.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0a66b39785efd8513d2cca967ede56d6cc57c8d7986a595c7c47d0c78de8dce"
-dependencies = [
- "cranelift-entity",
- "fxhash",
- "hashbrown",
- "indexmap",
- "log",
- "smallvec",
-]
+checksum = "cc5fbaec51de47297fd7304986fd53c8c0030abbe69728a60d72e1c63559318d"
[[package]]
name = "cranelift-entity"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0637ffde963cb5d759bc4d454cfa364b6509e6c74cdaa21298add0ed9276f346"
+checksum = "dab984c94593f876090fae92e984bdcc74d9b1acf740ab5f79036001c65cba13"
[[package]]
name = "cranelift-frontend"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb72b8342685e850cb037350418f62cc4fc55d6c2eb9c7ca01b82f9f1a6f3d56"
+checksum = "6e0cb3102d21a2fe5f3210af608748ddd0cd09825ac12d42dc56ed5ed8725fe0"
dependencies = [
"cranelift-codegen",
"log",
[[package]]
name = "cranelift-isle"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "850579cb9e4b448f7c301f1e6e6cbad99abe3f1f1d878a4994cb66e33c6db8cd"
+checksum = "72101dd1f441d629735143c41e00b3428f9267738176983ef588ff43382af0a0"
[[package]]
name = "cranelift-jit"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9add822ad66dcbe152b5ab57de10240a2df4505099f2f6c27159acb711890bd4"
+checksum = "6557f8ce44d498777f2495aa58d9692a4a37d6f84aa445750d666cef770b6a5c"
dependencies = [
"anyhow",
"cranelift-codegen",
[[package]]
name = "cranelift-module"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "406b772626fc2664864cf947f3895a23b619895c7fff635f3622e2d857f4492f"
+checksum = "88807e1c0c47ec02fe433333ccbe56b480425418b1470e333205e11650697d72"
dependencies = [
"anyhow",
"cranelift-codegen",
[[package]]
name = "cranelift-native"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d0a279e5bcba3e0466c734d8d8eb6bfc1ad29e95c37f3e4955b492b5616335e"
+checksum = "c22b0d9fcbe3fc5a1af9e7021b44ce42b930bcefac446ce22e02e8f9a0d67120"
dependencies = [
"cranelift-codegen",
"libc",
[[package]]
name = "cranelift-object"
-version = "0.90.1"
+version = "0.92.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39793c550f0c1d7db96c2fc1324583670c8143befe6edbfbaf1c68aba53be983"
+checksum = "341375758d7c3fedc0b5315f552e6f0feac46baf87c450a15e9455ef47c2b261"
dependencies = [
"anyhow",
"cranelift-codegen",
[[package]]
name = "regalloc2"
-version = "0.4.2"
+version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91b2eab54204ea0117fe9a060537e0b07a4e72f7c7d182361ecc346cab2240e5"
+checksum = "300d4fbfb40c1c66a78ba3ddd41c1110247cf52f97b87d0f2fc9209bd49b030c"
dependencies = [
"fxhash",
"log",
"cranelift-frontend",
"cranelift-jit",
"cranelift-module",
- "cranelift-native",
"cranelift-object",
"gimli",
"indexmap",
[[package]]
name = "wasmtime-jit-icache-coherence"
-version = "2.0.1"
+version = "5.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6bbabb309c06cc238ee91b1455b748c45f0bdcab0dda2c2db85b0a1e69fcb66"
+checksum = "08fcba5ebd96da2a9f0747ab6337fe9788adfb3f63fa2c180520d665562d257e"
dependencies = [
"cfg-if",
"libc",
[[package]]
name = "windows-sys"
-version = "0.36.1"
+version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
+checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7"
dependencies = [
+ "windows_aarch64_gnullvm",
"windows_aarch64_msvc",
"windows_i686_gnu",
"windows_i686_msvc",
"windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
"windows_x86_64_msvc",
]
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e"
+
[[package]]
name = "windows_aarch64_msvc"
-version = "0.36.1"
+version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
+checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4"
[[package]]
name = "windows_i686_gnu"
-version = "0.36.1"
+version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
+checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7"
[[package]]
name = "windows_i686_msvc"
-version = "0.36.1"
+version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
+checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246"
[[package]]
name = "windows_x86_64_gnu"
-version = "0.36.1"
+version = "0.42.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
+checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028"
[[package]]
name = "windows_x86_64_msvc"
-version = "0.36.1"
+version = "0.42.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
+checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5"
[dependencies]
# These have to be in sync with each other
-cranelift-codegen = { version = "0.90.1", features = ["unwind", "all-arch"] }
-cranelift-frontend = "0.90.1"
-cranelift-module = "0.90.1"
-cranelift-native = "0.90.1"
-cranelift-jit = { version = "0.90.1", optional = true }
-cranelift-object = "0.90.1"
+cranelift-codegen = { version = "0.92", features = ["unwind", "all-arch"] }
+cranelift-frontend = { version = "0.92" }
+cranelift-module = { version = "0.92" }
+# NOTE vendored as src/cranelift_native.rs
+# FIXME revert back to the external crate with Cranelift 0.93
+#cranelift-native = { version = "0.92" }
+cranelift-jit = { version = "0.92", optional = true }
+cranelift-object = { version = "0.92" }
target-lexicon = "0.12.0"
gimli = { version = "0.26.0", default-features = false, features = ["write"]}
object = { version = "0.29.0", default-features = false, features = ["std", "read_core", "write", "archive", "coff", "elf", "macho", "pe"] }
## Building and testing
```bash
-$ git clone https://github.com/bjorn3/rustc_codegen_cranelift.git
+$ git clone https://github.com/bjorn3/rustc_codegen_cranelift
$ cd rustc_codegen_cranelift
-$ ./y.rs prepare # download and patch sysroot src and install hyperfine for benchmarking
+$ ./y.rs prepare
$ ./y.rs build
```
$ ./test.sh
```
-This will implicitly build cg_clif too. Both `y.rs build` and `test.sh` accept a `--debug` argument to
-build in debug mode.
+For more docs on how to build and test see [build_system/usage.txt](build_system/usage.txt) or the help message of `./y.rs`.
-Alternatively you can download a pre built version from [GHA]. It is listed in the artifacts section
+Alternatively you can download a pre built version from [Github Actions]. It is listed in the artifacts section
of workflow runs. Unfortunately due to GHA restrictions you need to be logged in to access it.
-[GHA]: https://github.com/bjorn3/rustc_codegen_cranelift/actions?query=branch%3Amaster+event%3Apush+is%3Asuccess
+[Github Actions]: https://github.com/bjorn3/rustc_codegen_cranelift/actions?query=branch%3Amaster+event%3Apush+is%3Asuccess
## Usage
* Inline assembly ([no cranelift support](https://github.com/bytecodealliance/wasmtime/issues/1041))
* On UNIX there is support for invoking an external assembler for `global_asm!` and `asm!`.
-* SIMD ([tracked here](https://github.com/bjorn3/rustc_codegen_cranelift/issues/171), some basic things work)
+* SIMD ([tracked here](https://github.com/bjorn3/rustc_codegen_cranelift/issues/171), `std::simd` fully works, `std::arch` is partially supported)
+* Unwinding on panics ([no cranelift support](https://github.com/bytecodealliance/wasmtime/issues/1677), `-Cpanic=abort` is enabled by default)
## License
[[package]]
name = "cc"
-version = "1.0.77"
+version = "1.0.78"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e9f73505338f7d905b19d18738976aae232eb46b8efc15554ffc56deb5d9ebe4"
+checksum = "a20104e2335ce8a659d6dd92a51a767a0c062599c73b343fd152cb401e828c3d"
[[package]]
name = "cfg-if"
[[package]]
name = "compiler_builtins"
-version = "0.1.85"
+version = "0.1.86"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13e81c6cd7ab79f51a0c927d22858d61ad12bd0b3865f0b13ece02a4486aeabb"
+checksum = "5dae98c88e576098d7ab13ebcb40cc43e5114b2beafe61a87cda9200649ff205"
dependencies = [
"rustc-std-workspace-core",
]
[[package]]
name = "libc"
-version = "0.2.138"
+version = "0.2.139"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6d7e329c562c5dfab7a46a2afabc8b987ab9a4834c9d1ca04dc54c1546cef8"
+checksum = "201de327520df007757c1f0adce6e827fe8562fbc28bfd9c15571c66ca1f5f79"
dependencies = [
"rustc-std-workspace-core",
]
use std::path::Path;
use super::build_sysroot;
-use super::config;
use super::path::Dirs;
use super::prepare::GitRepo;
use super::utils::{spawn_and_wait, CargoProject, Compiler};
pub(crate) static ABI_CAFE_REPO: GitRepo =
GitRepo::github("Gankra", "abi-cafe", "4c6dc8c9c687e2b3a760ff2176ce236872b37212", "abi-cafe");
-static ABI_CAFE: CargoProject = CargoProject::new(&ABI_CAFE_REPO.source_dir(), "abi_cafe");
+pub(crate) static ABI_CAFE: CargoProject =
+ CargoProject::new(&ABI_CAFE_REPO.source_dir(), "abi_cafe");
pub(crate) fn run(
channel: &str,
sysroot_kind: SysrootKind,
dirs: &Dirs,
cg_clif_dylib: &Path,
- host_triple: &str,
- target_triple: &str,
+ bootstrap_host_compiler: &Compiler,
) {
- if !config::get_bool("testsuite.abi-cafe") {
- eprintln!("[SKIP] abi-cafe");
- return;
- }
-
- if host_triple != target_triple {
- eprintln!("[SKIP] abi-cafe (cross-compilation not supported)");
- return;
- }
-
eprintln!("Building sysroot for abi-cafe");
build_sysroot::build_sysroot(
dirs,
channel,
sysroot_kind,
cg_clif_dylib,
- host_triple,
- target_triple,
+ bootstrap_host_compiler,
+ bootstrap_host_compiler.triple.clone(),
);
eprintln!("Running abi-cafe");
let pairs = ["rustc_calls_cgclif", "cgclif_calls_rustc", "cgclif_calls_cc", "cc_calls_cgclif"];
- let mut cmd = ABI_CAFE.run(&Compiler::host(), dirs);
+ let mut cmd = ABI_CAFE.run(bootstrap_host_compiler, dirs);
cmd.arg("--");
cmd.arg("--pairs");
cmd.args(pairs);
--- /dev/null
+use std::env;
+use std::fs;
+use std::path::Path;
+
+use super::path::{Dirs, RelPath};
+use super::prepare::GitRepo;
+use super::rustc_info::get_file_name;
+use super::utils::{hyperfine_command, is_ci, spawn_and_wait, CargoProject, Compiler};
+
+pub(crate) static SIMPLE_RAYTRACER_REPO: GitRepo = GitRepo::github(
+ "ebobby",
+ "simple-raytracer",
+ "804a7a21b9e673a482797aa289a18ed480e4d813",
+ "<none>",
+);
+
+// Use a separate target dir for the initial LLVM build to reduce unnecessary recompiles
+pub(crate) static SIMPLE_RAYTRACER_LLVM: CargoProject =
+ CargoProject::new(&SIMPLE_RAYTRACER_REPO.source_dir(), "simple_raytracer_llvm");
+
+pub(crate) static SIMPLE_RAYTRACER: CargoProject =
+ CargoProject::new(&SIMPLE_RAYTRACER_REPO.source_dir(), "simple_raytracer");
+
+pub(crate) fn benchmark(dirs: &Dirs, bootstrap_host_compiler: &Compiler) {
+ benchmark_simple_raytracer(dirs, bootstrap_host_compiler);
+}
+
+fn benchmark_simple_raytracer(dirs: &Dirs, bootstrap_host_compiler: &Compiler) {
+ if std::process::Command::new("hyperfine").output().is_err() {
+ eprintln!("Hyperfine not installed");
+ eprintln!("Hint: Try `cargo install hyperfine` to install hyperfine");
+ std::process::exit(1);
+ }
+
+ eprintln!("[LLVM BUILD] simple-raytracer");
+ let build_cmd = SIMPLE_RAYTRACER_LLVM.build(bootstrap_host_compiler, dirs);
+ spawn_and_wait(build_cmd);
+ fs::copy(
+ SIMPLE_RAYTRACER_LLVM
+ .target_dir(dirs)
+ .join(&bootstrap_host_compiler.triple)
+ .join("debug")
+ .join(get_file_name("main", "bin")),
+ RelPath::BUILD.to_path(dirs).join(get_file_name("raytracer_cg_llvm", "bin")),
+ )
+ .unwrap();
+
+ let run_runs = env::var("RUN_RUNS")
+ .unwrap_or(if is_ci() { "2" } else { "10" }.to_string())
+ .parse()
+ .unwrap();
+
+ eprintln!("[BENCH COMPILE] ebobby/simple-raytracer");
+ let cargo_clif =
+ RelPath::DIST.to_path(dirs).join(get_file_name("cargo_clif", "bin").replace('_', "-"));
+ let manifest_path = SIMPLE_RAYTRACER.manifest_path(dirs);
+ let target_dir = SIMPLE_RAYTRACER.target_dir(dirs);
+
+ let clean_cmd = format!(
+ "cargo clean --manifest-path {manifest_path} --target-dir {target_dir}",
+ manifest_path = manifest_path.display(),
+ target_dir = target_dir.display(),
+ );
+ let llvm_build_cmd = format!(
+ "cargo build --manifest-path {manifest_path} --target-dir {target_dir}",
+ manifest_path = manifest_path.display(),
+ target_dir = target_dir.display(),
+ );
+ let clif_build_cmd = format!(
+ "{cargo_clif} build --manifest-path {manifest_path} --target-dir {target_dir}",
+ cargo_clif = cargo_clif.display(),
+ manifest_path = manifest_path.display(),
+ target_dir = target_dir.display(),
+ );
+
+ let bench_compile =
+ hyperfine_command(1, run_runs, Some(&clean_cmd), &llvm_build_cmd, &clif_build_cmd);
+
+ spawn_and_wait(bench_compile);
+
+ eprintln!("[BENCH RUN] ebobby/simple-raytracer");
+ fs::copy(
+ target_dir.join("debug").join(get_file_name("main", "bin")),
+ RelPath::BUILD.to_path(dirs).join(get_file_name("raytracer_cg_clif", "bin")),
+ )
+ .unwrap();
+
+ let mut bench_run = hyperfine_command(
+ 0,
+ run_runs,
+ None,
+ Path::new(".").join(get_file_name("raytracer_cg_llvm", "bin")).to_str().unwrap(),
+ Path::new(".").join(get_file_name("raytracer_cg_clif", "bin")).to_str().unwrap(),
+ );
+ bench_run.current_dir(RelPath::BUILD.to_path(dirs));
+ spawn_and_wait(bench_run);
+}
use super::rustc_info::get_file_name;
use super::utils::{is_ci, CargoProject, Compiler};
-static CG_CLIF: CargoProject = CargoProject::new(&RelPath::SOURCE, "cg_clif");
+pub(crate) static CG_CLIF: CargoProject = CargoProject::new(&RelPath::SOURCE, "cg_clif");
pub(crate) fn build_backend(
dirs: &Dirs,
channel: &str,
- host_triple: &str,
+ bootstrap_host_compiler: &Compiler,
use_unstable_features: bool,
) -> PathBuf {
- let mut cmd = CG_CLIF.build(&Compiler::host(), dirs);
+ let mut cmd = CG_CLIF.build(&bootstrap_host_compiler, dirs);
cmd.env("CARGO_BUILD_INCREMENTAL", "true"); // Force incr comp even in release mode
// Disabling incr comp reduces cache size and incr comp doesn't save as much on CI anyway
cmd.env("CARGO_BUILD_INCREMENTAL", "false");
+
+ cmd.env("CARGO_PROFILE_RELEASE_DEBUG_ASSERTIONS", "true");
}
if use_unstable_features {
CG_CLIF
.target_dir(dirs)
- .join(host_triple)
+ .join(&bootstrap_host_compiler.triple)
.join(channel)
.join(get_file_name("rustc_codegen_cranelift", "dylib"))
}
use std::fs;
-use std::path::Path;
+use std::path::{Path, PathBuf};
use std::process::{self, Command};
use super::path::{Dirs, RelPath};
-use super::rustc_info::{get_file_name, get_rustc_version, get_wrapper_file_name};
-use super::utils::{spawn_and_wait, try_hard_link, CargoProject, Compiler};
+use super::rustc_info::{get_file_name, get_rustc_version, get_toolchain_name};
+use super::utils::{remove_dir_if_exists, spawn_and_wait, try_hard_link, CargoProject, Compiler};
use super::SysrootKind;
static DIST_DIR: RelPath = RelPath::DIST;
static BIN_DIR: RelPath = RelPath::DIST.join("bin");
static LIB_DIR: RelPath = RelPath::DIST.join("lib");
-static RUSTLIB_DIR: RelPath = LIB_DIR.join("rustlib");
pub(crate) fn build_sysroot(
dirs: &Dirs,
channel: &str,
sysroot_kind: SysrootKind,
cg_clif_dylib_src: &Path,
- host_triple: &str,
- target_triple: &str,
-) {
+ bootstrap_host_compiler: &Compiler,
+ target_triple: String,
+) -> Compiler {
eprintln!("[BUILD] sysroot {:?}", sysroot_kind);
DIST_DIR.ensure_fresh(dirs);
BIN_DIR.ensure_exists(dirs);
LIB_DIR.ensure_exists(dirs);
+ let is_native = bootstrap_host_compiler.triple == target_triple;
+
// Copy the backend
let cg_clif_dylib_path = if cfg!(windows) {
// Windows doesn't have rpath support, so the cg_clif dylib needs to be next to the
LIB_DIR
}
.to_path(dirs)
- .join(get_file_name("rustc_codegen_cranelift", "dylib"));
+ .join(cg_clif_dylib_src.file_name().unwrap());
try_hard_link(cg_clif_dylib_src, &cg_clif_dylib_path);
// Build and copy rustc and cargo wrappers
+ let wrapper_base_name = get_file_name("____", "bin");
+ let toolchain_name = get_toolchain_name();
for wrapper in ["rustc-clif", "rustdoc-clif", "cargo-clif"] {
- let wrapper_name = get_wrapper_file_name(wrapper, "bin");
+ let wrapper_name = wrapper_base_name.replace("____", wrapper);
- let mut build_cargo_wrapper_cmd = Command::new("rustc");
+ let mut build_cargo_wrapper_cmd = Command::new(&bootstrap_host_compiler.rustc);
build_cargo_wrapper_cmd
+ .env("TOOLCHAIN_NAME", toolchain_name.clone())
.arg(RelPath::SCRIPTS.to_path(dirs).join(&format!("{wrapper}.rs")))
.arg("-o")
.arg(DIST_DIR.to_path(dirs).join(wrapper_name))
- .arg("-g");
+ .arg("-Cstrip=debuginfo");
spawn_and_wait(build_cargo_wrapper_cmd);
}
- let default_sysroot = super::rustc_info::get_default_sysroot();
+ let host = build_sysroot_for_triple(
+ dirs,
+ channel,
+ bootstrap_host_compiler.clone(),
+ &cg_clif_dylib_path,
+ sysroot_kind,
+ );
+ host.install_into_sysroot(&DIST_DIR.to_path(dirs));
- let host_rustlib_lib = RUSTLIB_DIR.to_path(dirs).join(host_triple).join("lib");
- let target_rustlib_lib = RUSTLIB_DIR.to_path(dirs).join(target_triple).join("lib");
- fs::create_dir_all(&host_rustlib_lib).unwrap();
- fs::create_dir_all(&target_rustlib_lib).unwrap();
+ if !is_native {
+ build_sysroot_for_triple(
+ dirs,
+ channel,
+ {
+ let mut bootstrap_target_compiler = bootstrap_host_compiler.clone();
+ bootstrap_target_compiler.triple = target_triple.clone();
+ bootstrap_target_compiler.set_cross_linker_and_runner();
+ bootstrap_target_compiler
+ },
+ &cg_clif_dylib_path,
+ sysroot_kind,
+ )
+ .install_into_sysroot(&DIST_DIR.to_path(dirs));
+ }
- if target_triple == "x86_64-pc-windows-gnu" {
- if !default_sysroot.join("lib").join("rustlib").join(target_triple).join("lib").exists() {
- eprintln!(
- "The x86_64-pc-windows-gnu target needs to be installed first before it is possible \
- to compile a sysroot for it.",
- );
- process::exit(1);
+ // Copy std for the host to the lib dir. This is necessary for the jit mode to find
+ // libstd.
+ for lib in host.libs {
+ let filename = lib.file_name().unwrap().to_str().unwrap();
+ if filename.contains("std-") && !filename.contains(".rlib") {
+ try_hard_link(&lib, LIB_DIR.to_path(dirs).join(lib.file_name().unwrap()));
}
- for file in fs::read_dir(
- default_sysroot.join("lib").join("rustlib").join(target_triple).join("lib"),
- )
- .unwrap()
- {
- let file = file.unwrap().path();
- if file.extension().map_or(true, |ext| ext.to_str().unwrap() != "o") {
- continue; // only copy object files
- }
- try_hard_link(&file, target_rustlib_lib.join(file.file_name().unwrap()));
+ }
+
+ let mut target_compiler = {
+ let dirs: &Dirs = &dirs;
+ let rustc_clif =
+ RelPath::DIST.to_path(&dirs).join(wrapper_base_name.replace("____", "rustc-clif"));
+ let rustdoc_clif =
+ RelPath::DIST.to_path(&dirs).join(wrapper_base_name.replace("____", "rustdoc-clif"));
+
+ Compiler {
+ cargo: bootstrap_host_compiler.cargo.clone(),
+ rustc: rustc_clif.clone(),
+ rustdoc: rustdoc_clif.clone(),
+ rustflags: String::new(),
+ rustdocflags: String::new(),
+ triple: target_triple,
+ runner: vec![],
}
+ };
+ if !is_native {
+ target_compiler.set_cross_linker_and_runner();
}
+ target_compiler
+}
- match sysroot_kind {
- SysrootKind::None => {} // Nothing to do
- SysrootKind::Llvm => {
- for file in fs::read_dir(
- default_sysroot.join("lib").join("rustlib").join(host_triple).join("lib"),
- )
- .unwrap()
- {
- let file = file.unwrap().path();
- let file_name_str = file.file_name().unwrap().to_str().unwrap();
- if (file_name_str.contains("rustc_")
- && !file_name_str.contains("rustc_std_workspace_")
- && !file_name_str.contains("rustc_demangle"))
- || file_name_str.contains("chalk")
- || file_name_str.contains("tracing")
- || file_name_str.contains("regex")
- {
- // These are large crates that are part of the rustc-dev component and are not
- // necessary to run regular programs.
- continue;
- }
- try_hard_link(&file, host_rustlib_lib.join(file.file_name().unwrap()));
- }
+struct SysrootTarget {
+ triple: String,
+ libs: Vec<PathBuf>,
+}
- if target_triple != host_triple {
- for file in fs::read_dir(
- default_sysroot.join("lib").join("rustlib").join(target_triple).join("lib"),
- )
- .unwrap()
- {
- let file = file.unwrap().path();
- try_hard_link(&file, target_rustlib_lib.join(file.file_name().unwrap()));
- }
- }
+impl SysrootTarget {
+ fn install_into_sysroot(&self, sysroot: &Path) {
+ if self.libs.is_empty() {
+ return;
}
- SysrootKind::Clif => {
- build_clif_sysroot_for_triple(dirs, channel, host_triple, &cg_clif_dylib_path, None);
-
- if host_triple != target_triple {
- // When cross-compiling it is often necessary to manually pick the right linker
- let linker = match target_triple {
- "aarch64-unknown-linux-gnu" => Some("aarch64-linux-gnu-gcc"),
- "s390x-unknown-linux-gnu" => Some("s390x-linux-gnu-gcc"),
- _ => None,
- };
- build_clif_sysroot_for_triple(
- dirs,
- channel,
- target_triple,
- &cg_clif_dylib_path,
- linker,
- );
- }
- // Copy std for the host to the lib dir. This is necessary for the jit mode to find
- // libstd.
- for file in fs::read_dir(host_rustlib_lib).unwrap() {
- let file = file.unwrap().path();
- let filename = file.file_name().unwrap().to_str().unwrap();
- if filename.contains("std-") && !filename.contains(".rlib") {
- try_hard_link(&file, LIB_DIR.to_path(dirs).join(file.file_name().unwrap()));
- }
- }
+ let target_rustlib_lib = sysroot.join("lib").join("rustlib").join(&self.triple).join("lib");
+ fs::create_dir_all(&target_rustlib_lib).unwrap();
+
+ for lib in &self.libs {
+ try_hard_link(lib, target_rustlib_lib.join(lib.file_name().unwrap()));
}
}
}
-// FIXME move to download/ or dist/
-pub(crate) static SYSROOT_RUSTC_VERSION: RelPath = RelPath::BUILD_SYSROOT.join("rustc_version");
-pub(crate) static SYSROOT_SRC: RelPath = RelPath::BUILD_SYSROOT.join("sysroot_src");
-static STANDARD_LIBRARY: CargoProject = CargoProject::new(&RelPath::BUILD_SYSROOT, "build_sysroot");
+pub(crate) static ORIG_BUILD_SYSROOT: RelPath = RelPath::SOURCE.join("build_sysroot");
+pub(crate) static BUILD_SYSROOT: RelPath = RelPath::DOWNLOAD.join("sysroot");
+pub(crate) static SYSROOT_RUSTC_VERSION: RelPath = BUILD_SYSROOT.join("rustc_version");
+pub(crate) static SYSROOT_SRC: RelPath = BUILD_SYSROOT.join("sysroot_src");
+pub(crate) static STANDARD_LIBRARY: CargoProject =
+ CargoProject::new(&BUILD_SYSROOT, "build_sysroot");
+pub(crate) static RTSTARTUP_SYSROOT: RelPath = RelPath::BUILD.join("rtstartup");
+#[must_use]
+fn build_sysroot_for_triple(
+ dirs: &Dirs,
+ channel: &str,
+ compiler: Compiler,
+ cg_clif_dylib_path: &Path,
+ sysroot_kind: SysrootKind,
+) -> SysrootTarget {
+ match sysroot_kind {
+ SysrootKind::None => build_rtstartup(dirs, &compiler)
+ .unwrap_or(SysrootTarget { triple: compiler.triple, libs: vec![] }),
+ SysrootKind::Llvm => build_llvm_sysroot_for_triple(compiler),
+ SysrootKind::Clif => {
+ build_clif_sysroot_for_triple(dirs, channel, compiler, &cg_clif_dylib_path)
+ }
+ }
+}
+
+#[must_use]
+fn build_llvm_sysroot_for_triple(compiler: Compiler) -> SysrootTarget {
+ let default_sysroot = super::rustc_info::get_default_sysroot(&compiler.rustc);
+
+ let mut target_libs = SysrootTarget { triple: compiler.triple, libs: vec![] };
+
+ for entry in fs::read_dir(
+ default_sysroot.join("lib").join("rustlib").join(&target_libs.triple).join("lib"),
+ )
+ .unwrap()
+ {
+ let entry = entry.unwrap();
+ if entry.file_type().unwrap().is_dir() {
+ continue;
+ }
+ let file = entry.path();
+ let file_name_str = file.file_name().unwrap().to_str().unwrap();
+ if (file_name_str.contains("rustc_")
+ && !file_name_str.contains("rustc_std_workspace_")
+ && !file_name_str.contains("rustc_demangle"))
+ || file_name_str.contains("chalk")
+ || file_name_str.contains("tracing")
+ || file_name_str.contains("regex")
+ {
+ // These are large crates that are part of the rustc-dev component and are not
+ // necessary to run regular programs.
+ continue;
+ }
+ target_libs.libs.push(file);
+ }
+
+ target_libs
+}
+
+#[must_use]
fn build_clif_sysroot_for_triple(
dirs: &Dirs,
channel: &str,
- triple: &str,
+ mut compiler: Compiler,
cg_clif_dylib_path: &Path,
- linker: Option<&str>,
-) {
+) -> SysrootTarget {
match fs::read_to_string(SYSROOT_RUSTC_VERSION.to_path(dirs)) {
Err(e) => {
eprintln!("Failed to get rustc version for patched sysroot source: {}", e);
process::exit(1);
}
Ok(source_version) => {
- let rustc_version = get_rustc_version();
+ let rustc_version = get_rustc_version(&compiler.rustc);
if source_version != rustc_version {
eprintln!("The patched sysroot source is outdated");
eprintln!("Source version: {}", source_version.trim());
}
}
- let build_dir = STANDARD_LIBRARY.target_dir(dirs).join(triple).join(channel);
+ let mut target_libs = SysrootTarget { triple: compiler.triple.clone(), libs: vec![] };
+
+ if let Some(rtstartup_target_libs) = build_rtstartup(dirs, &compiler) {
+ rtstartup_target_libs.install_into_sysroot(&RTSTARTUP_SYSROOT.to_path(dirs));
+
+ target_libs.libs.extend(rtstartup_target_libs.libs);
+ }
+
+ let build_dir = STANDARD_LIBRARY.target_dir(dirs).join(&compiler.triple).join(channel);
if !super::config::get_bool("keep_sysroot") {
// Cleanup the deps dir, but keep build scripts and the incremental cache for faster
// recompilation as they are not affected by changes in cg_clif.
- if build_dir.join("deps").exists() {
- fs::remove_dir_all(build_dir.join("deps")).unwrap();
- }
+ remove_dir_if_exists(&build_dir.join("deps"));
}
// Build sysroot
- let mut rustflags = "-Zforce-unstable-if-unmarked -Cpanic=abort".to_string();
+ let mut rustflags = " -Zforce-unstable-if-unmarked -Cpanic=abort".to_string();
rustflags.push_str(&format!(" -Zcodegen-backend={}", cg_clif_dylib_path.to_str().unwrap()));
- rustflags.push_str(&format!(" --sysroot={}", DIST_DIR.to_path(dirs).to_str().unwrap()));
+ // Necessary for MinGW to find rsbegin.o and rsend.o
+ rustflags
+ .push_str(&format!(" --sysroot={}", RTSTARTUP_SYSROOT.to_path(dirs).to_str().unwrap()));
if channel == "release" {
rustflags.push_str(" -Zmir-opt-level=3");
}
- if let Some(linker) = linker {
- use std::fmt::Write;
- write!(rustflags, " -Clinker={}", linker).unwrap();
- }
- let mut compiler = Compiler::with_triple(triple.to_owned());
- compiler.rustflags = rustflags;
+ compiler.rustflags += &rustflags;
let mut build_cmd = STANDARD_LIBRARY.build(&compiler, dirs);
if channel == "release" {
build_cmd.arg("--release");
build_cmd.env("__CARGO_DEFAULT_LIB_METADATA", "cg_clif");
spawn_and_wait(build_cmd);
- // Copy all relevant files to the sysroot
for entry in fs::read_dir(build_dir.join("deps")).unwrap() {
let entry = entry.unwrap();
if let Some(ext) = entry.path().extension() {
} else {
continue;
};
- try_hard_link(
- entry.path(),
- RUSTLIB_DIR.to_path(dirs).join(triple).join("lib").join(entry.file_name()),
- );
+ target_libs.libs.push(entry.path());
+ }
+
+ target_libs
+}
+
+fn build_rtstartup(dirs: &Dirs, compiler: &Compiler) -> Option<SysrootTarget> {
+ if !compiler.triple.ends_with("windows-gnu") {
+ return None;
}
+
+ RTSTARTUP_SYSROOT.ensure_fresh(dirs);
+
+ let rtstartup_src = SYSROOT_SRC.to_path(dirs).join("library").join("rtstartup");
+ let mut target_libs = SysrootTarget { triple: compiler.triple.clone(), libs: vec![] };
+
+ for file in ["rsbegin", "rsend"] {
+ let obj = RTSTARTUP_SYSROOT.to_path(dirs).join(format!("{file}.o"));
+ let mut build_rtstartup_cmd = Command::new(&compiler.rustc);
+ build_rtstartup_cmd
+ .arg("--target")
+ .arg(&compiler.triple)
+ .arg("--emit=obj")
+ .arg("-o")
+ .arg(&obj)
+ .arg(rtstartup_src.join(format!("{file}.rs")));
+ spawn_and_wait(build_rtstartup_cmd);
+ target_libs.libs.push(obj.clone());
+ }
+
+ Some(target_libs)
}
use std::path::PathBuf;
use std::process;
-use self::utils::is_ci;
+use self::utils::{is_ci, Compiler};
mod abi_cafe;
+mod bench;
mod build_backend;
mod build_sysroot;
mod config;
mod tests;
mod utils;
-const USAGE: &str = r#"The build system of cg_clif.
-
-USAGE:
- ./y.rs prepare [--out-dir DIR]
- ./y.rs build [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
- ./y.rs test [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
-
-OPTIONS:
- --sysroot none|clif|llvm
- Which sysroot libraries to use:
- `none` will not include any standard library in the sysroot.
- `clif` will build the standard library using Cranelift.
- `llvm` will use the pre-compiled standard library of rustc which is compiled with LLVM.
-
- --out-dir DIR
- Specify the directory in which the download, build and dist directories are stored.
- By default this is the working directory.
-
- --no-unstable-features
- fSome features are not yet ready for production usage. This option will disable these
- features. This includes the JIT mode and inline assembly support.
-"#;
-
fn usage() {
- eprintln!("{USAGE}");
+ eprintln!("{}", include_str!("usage.txt"));
}
macro_rules! arg_error {
Prepare,
Build,
Test,
+ AbiCafe,
+ Bench,
}
#[derive(Copy, Clone, Debug)]
}
pub fn main() {
- env::set_var("CG_CLIF_DISPLAY_CG_TIME", "1");
+ if env::var("RUST_BACKTRACE").is_err() {
+ env::set_var("RUST_BACKTRACE", "1");
+ }
env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");
if is_ci() {
// Disabling incr comp reduces cache size and incr comp doesn't save as much on CI anyway
env::set_var("CARGO_BUILD_INCREMENTAL", "false");
+
+ // Enable the Cranelift verifier
+ env::set_var("CG_CLIF_ENABLE_VERIFIER", "1");
}
let mut args = env::args().skip(1);
Some("prepare") => Command::Prepare,
Some("build") => Command::Build,
Some("test") => Command::Test,
+ Some("abi-cafe") => Command::AbiCafe,
+ Some("bench") => Command::Bench,
Some(flag) if flag.starts_with('-') => arg_error!("Expected command found flag {}", flag),
Some(command) => arg_error!("Unknown command {}", command),
None => {
}
}
- let host_triple = if let Ok(host_triple) = std::env::var("HOST_TRIPLE") {
- host_triple
- } else if let Some(host_triple) = config::get_value("host") {
- host_triple
- } else {
- rustc_info::get_host_triple()
- };
- let target_triple = if let Ok(target_triple) = std::env::var("TARGET_TRIPLE") {
- if target_triple != "" {
- target_triple
- } else {
- host_triple.clone() // Empty target triple can happen on GHA
- }
- } else if let Some(target_triple) = config::get_value("target") {
- target_triple
- } else {
- host_triple.clone()
- };
+ let bootstrap_host_compiler = Compiler::bootstrap_with_triple(
+ std::env::var("HOST_TRIPLE")
+ .ok()
+ .or_else(|| config::get_value("host"))
+ .unwrap_or_else(|| rustc_info::get_host_triple()),
+ );
+ let target_triple = std::env::var("TARGET_TRIPLE")
+ .ok()
+ .or_else(|| config::get_value("target"))
+ .unwrap_or_else(|| bootstrap_host_compiler.triple.clone());
// FIXME allow changing the location of these dirs using cli arguments
let current_dir = std::env::current_dir().unwrap();
process::exit(0);
}
- let cg_clif_dylib =
- build_backend::build_backend(&dirs, channel, &host_triple, use_unstable_features);
+ env::set_var("RUSTC", "rustc_should_be_set_explicitly");
+ env::set_var("RUSTDOC", "rustdoc_should_be_set_explicitly");
+
+ let cg_clif_dylib = build_backend::build_backend(
+ &dirs,
+ channel,
+ &bootstrap_host_compiler,
+ use_unstable_features,
+ );
match command {
Command::Prepare => {
// Handled above
channel,
sysroot_kind,
&cg_clif_dylib,
- &host_triple,
- &target_triple,
+ &bootstrap_host_compiler,
+ target_triple.clone(),
);
-
- abi_cafe::run(
+ }
+ Command::AbiCafe => {
+ if bootstrap_host_compiler.triple != target_triple {
+ eprintln!("Abi-cafe doesn't support cross-compilation");
+ process::exit(1);
+ }
+ abi_cafe::run(channel, sysroot_kind, &dirs, &cg_clif_dylib, &bootstrap_host_compiler);
+ }
+ Command::Build => {
+ build_sysroot::build_sysroot(
+ &dirs,
channel,
sysroot_kind,
- &dirs,
&cg_clif_dylib,
- &host_triple,
- &target_triple,
+ &bootstrap_host_compiler,
+ target_triple,
);
}
- Command::Build => {
+ Command::Bench => {
build_sysroot::build_sysroot(
&dirs,
channel,
sysroot_kind,
&cg_clif_dylib,
- &host_triple,
- &target_triple,
+ &bootstrap_host_compiler,
+ target_triple,
);
+ bench::benchmark(&dirs, &bootstrap_host_compiler);
}
}
}
use std::fs;
use std::path::PathBuf;
+use super::utils::remove_dir_if_exists;
+
#[derive(Debug, Clone)]
pub(crate) struct Dirs {
pub(crate) source_dir: PathBuf,
pub(crate) const DIST: RelPath = RelPath::Base(PathBase::Dist);
pub(crate) const SCRIPTS: RelPath = RelPath::SOURCE.join("scripts");
- pub(crate) const BUILD_SYSROOT: RelPath = RelPath::SOURCE.join("build_sysroot");
pub(crate) const PATCHES: RelPath = RelPath::SOURCE.join("patches");
pub(crate) const fn join(&'static self, suffix: &'static str) -> RelPath {
pub(crate) fn ensure_fresh(&self, dirs: &Dirs) {
let path = self.to_path(dirs);
- if path.exists() {
- fs::remove_dir_all(&path).unwrap();
- }
+ remove_dir_if_exists(&path);
fs::create_dir_all(path).unwrap();
}
}
use std::path::{Path, PathBuf};
use std::process::Command;
-use super::build_sysroot::{SYSROOT_RUSTC_VERSION, SYSROOT_SRC};
+use super::build_sysroot::{BUILD_SYSROOT, ORIG_BUILD_SYSROOT, SYSROOT_RUSTC_VERSION, SYSROOT_SRC};
use super::path::{Dirs, RelPath};
-use super::rustc_info::{get_file_name, get_rustc_path, get_rustc_version};
-use super::utils::{copy_dir_recursively, spawn_and_wait, Compiler};
+use super::rustc_info::{get_default_sysroot, get_rustc_version};
+use super::utils::{copy_dir_recursively, git_command, retry_spawn_and_wait, spawn_and_wait};
pub(crate) fn prepare(dirs: &Dirs) {
- if RelPath::DOWNLOAD.to_path(dirs).exists() {
- std::fs::remove_dir_all(RelPath::DOWNLOAD.to_path(dirs)).unwrap();
- }
- std::fs::create_dir_all(RelPath::DOWNLOAD.to_path(dirs)).unwrap();
+ RelPath::DOWNLOAD.ensure_fresh(dirs);
- prepare_sysroot(dirs);
+ spawn_and_wait(super::build_backend::CG_CLIF.fetch("cargo", dirs));
- // FIXME maybe install this only locally?
- eprintln!("[INSTALL] hyperfine");
- Command::new("cargo")
- .arg("install")
- .arg("hyperfine")
- .env_remove("CARGO_TARGET_DIR")
- .spawn()
- .unwrap()
- .wait()
- .unwrap();
+ prepare_sysroot(dirs);
+ spawn_and_wait(super::build_sysroot::STANDARD_LIBRARY.fetch("cargo", dirs));
+ spawn_and_wait(super::tests::LIBCORE_TESTS.fetch("cargo", dirs));
super::abi_cafe::ABI_CAFE_REPO.fetch(dirs);
+ spawn_and_wait(super::abi_cafe::ABI_CAFE.fetch("cargo", dirs));
super::tests::RAND_REPO.fetch(dirs);
+ spawn_and_wait(super::tests::RAND.fetch("cargo", dirs));
super::tests::REGEX_REPO.fetch(dirs);
+ spawn_and_wait(super::tests::REGEX.fetch("cargo", dirs));
super::tests::PORTABLE_SIMD_REPO.fetch(dirs);
- super::tests::SIMPLE_RAYTRACER_REPO.fetch(dirs);
-
- eprintln!("[LLVM BUILD] simple-raytracer");
- let host_compiler = Compiler::host();
- let build_cmd = super::tests::SIMPLE_RAYTRACER.build(&host_compiler, dirs);
- spawn_and_wait(build_cmd);
- fs::copy(
- super::tests::SIMPLE_RAYTRACER
- .target_dir(dirs)
- .join(&host_compiler.triple)
- .join("debug")
- .join(get_file_name("main", "bin")),
- RelPath::BUILD.to_path(dirs).join(get_file_name("raytracer_cg_llvm", "bin")),
- )
- .unwrap();
+ spawn_and_wait(super::tests::PORTABLE_SIMD.fetch("cargo", dirs));
+ super::bench::SIMPLE_RAYTRACER_REPO.fetch(dirs);
+ spawn_and_wait(super::bench::SIMPLE_RAYTRACER.fetch("cargo", dirs));
}
fn prepare_sysroot(dirs: &Dirs) {
- let rustc_path = get_rustc_path();
- let sysroot_src_orig = rustc_path.parent().unwrap().join("../lib/rustlib/src/rust");
- let sysroot_src = SYSROOT_SRC;
-
+ let sysroot_src_orig = get_default_sysroot(Path::new("rustc")).join("lib/rustlib/src/rust");
assert!(sysroot_src_orig.exists());
- sysroot_src.ensure_fresh(dirs);
- fs::create_dir_all(sysroot_src.to_path(dirs).join("library")).unwrap();
eprintln!("[COPY] sysroot src");
+
+ // FIXME ensure builds error out or update the copy if any of the files copied here change
+ BUILD_SYSROOT.ensure_fresh(dirs);
+ copy_dir_recursively(&ORIG_BUILD_SYSROOT.to_path(dirs), &BUILD_SYSROOT.to_path(dirs));
+
+ fs::create_dir_all(SYSROOT_SRC.to_path(dirs).join("library")).unwrap();
copy_dir_recursively(
&sysroot_src_orig.join("library"),
- &sysroot_src.to_path(dirs).join("library"),
+ &SYSROOT_SRC.to_path(dirs).join("library"),
);
- let rustc_version = get_rustc_version();
+ let rustc_version = get_rustc_version(Path::new("rustc"));
fs::write(SYSROOT_RUSTC_VERSION.to_path(dirs), &rustc_version).unwrap();
eprintln!("[GIT] init");
- init_git_repo(&sysroot_src.to_path(dirs));
+ init_git_repo(&SYSROOT_SRC.to_path(dirs));
- apply_patches(dirs, "sysroot", &sysroot_src.to_path(dirs));
+ apply_patches(dirs, "sysroot", &SYSROOT_SRC.to_path(dirs));
}
pub(crate) struct GitRepo {
fn clone_repo(download_dir: &Path, repo: &str, rev: &str) {
eprintln!("[CLONE] {}", repo);
// Ignore exit code as the repo may already have been checked out
- Command::new("git").arg("clone").arg(repo).arg(&download_dir).spawn().unwrap().wait().unwrap();
+ git_command(None, "clone").arg(repo).arg(download_dir).spawn().unwrap().wait().unwrap();
- let mut clean_cmd = Command::new("git");
- clean_cmd.arg("checkout").arg("--").arg(".").current_dir(&download_dir);
+ let mut clean_cmd = git_command(download_dir, "checkout");
+ clean_cmd.arg("--").arg(".");
spawn_and_wait(clean_cmd);
- let mut checkout_cmd = Command::new("git");
- checkout_cmd.arg("checkout").arg("-q").arg(rev).current_dir(download_dir);
+ let mut checkout_cmd = git_command(download_dir, "checkout");
+ checkout_cmd.arg("-q").arg(rev);
spawn_and_wait(checkout_cmd);
}
// Download zip archive
let mut download_cmd = Command::new("curl");
- download_cmd.arg("--location").arg("--output").arg(&archive_file).arg(archive_url);
- spawn_and_wait(download_cmd);
+ download_cmd
+ .arg("--max-time")
+ .arg("600")
+ .arg("-y")
+ .arg("30")
+ .arg("-Y")
+ .arg("10")
+ .arg("--connect-timeout")
+ .arg("30")
+ .arg("--continue-at")
+ .arg("-")
+ .arg("--location")
+ .arg("--output")
+ .arg(&archive_file)
+ .arg(archive_url);
+ retry_spawn_and_wait(5, download_cmd);
// Unpack tar archive
let mut unpack_cmd = Command::new("tar");
}
fn init_git_repo(repo_dir: &Path) {
- let mut git_init_cmd = Command::new("git");
- git_init_cmd.arg("init").arg("-q").current_dir(repo_dir);
+ let mut git_init_cmd = git_command(repo_dir, "init");
+ git_init_cmd.arg("-q");
spawn_and_wait(git_init_cmd);
- let mut git_add_cmd = Command::new("git");
- git_add_cmd.arg("add").arg(".").current_dir(repo_dir);
+ let mut git_add_cmd = git_command(repo_dir, "add");
+ git_add_cmd.arg(".");
spawn_and_wait(git_add_cmd);
- let mut git_commit_cmd = Command::new("git");
- git_commit_cmd
- .arg("-c")
- .arg("user.name=Dummy")
- .arg("-c")
- .arg("user.email=dummy@example.com")
- .arg("commit")
- .arg("-m")
- .arg("Initial commit")
- .arg("-q")
- .current_dir(repo_dir);
+ let mut git_commit_cmd = git_command(repo_dir, "commit");
+ git_commit_cmd.arg("-m").arg("Initial commit").arg("-q");
spawn_and_wait(git_commit_cmd);
}
target_dir.file_name().unwrap(),
patch.file_name().unwrap()
);
- let mut apply_patch_cmd = Command::new("git");
- apply_patch_cmd
- .arg("-c")
- .arg("user.name=Dummy")
- .arg("-c")
- .arg("user.email=dummy@example.com")
- .arg("am")
- .arg(patch)
- .arg("-q")
- .current_dir(target_dir);
+ let mut apply_patch_cmd = git_command(target_dir, "am");
+ apply_patch_cmd.arg(patch).arg("-q");
spawn_and_wait(apply_patch_cmd);
}
}
use std::path::{Path, PathBuf};
use std::process::{Command, Stdio};
-pub(crate) fn get_rustc_version() -> String {
+pub(crate) fn get_rustc_version(rustc: &Path) -> String {
let version_info =
- Command::new("rustc").stderr(Stdio::inherit()).args(&["-V"]).output().unwrap().stdout;
+ Command::new(rustc).stderr(Stdio::inherit()).args(&["-V"]).output().unwrap().stdout;
String::from_utf8(version_info).unwrap()
}
.to_owned()
}
+pub(crate) fn get_toolchain_name() -> String {
+ let active_toolchain = Command::new("rustup")
+ .stderr(Stdio::inherit())
+ .args(&["show", "active-toolchain"])
+ .output()
+ .unwrap()
+ .stdout;
+ String::from_utf8(active_toolchain).unwrap().trim().split_once(' ').unwrap().0.to_owned()
+}
+
pub(crate) fn get_cargo_path() -> PathBuf {
let cargo_path = Command::new("rustup")
.stderr(Stdio::inherit())
Path::new(String::from_utf8(rustc_path).unwrap().trim()).to_owned()
}
-pub(crate) fn get_default_sysroot() -> PathBuf {
- let default_sysroot = Command::new("rustc")
+pub(crate) fn get_default_sysroot(rustc: &Path) -> PathBuf {
+ let default_sysroot = Command::new(rustc)
.stderr(Stdio::inherit())
.args(&["--print", "sysroot"])
.output()
assert!(file_name.contains(crate_name));
file_name
}
-
-/// Similar to `get_file_name`, but converts any dashes (`-`) in the `crate_name` to
-/// underscores (`_`). This is specially made for the rustc and cargo wrappers
-/// which have a dash in the name, and that is not allowed in a crate name.
-pub(crate) fn get_wrapper_file_name(crate_name: &str, crate_type: &str) -> String {
- let crate_name = crate_name.replace('-', "_");
- let wrapper_name = get_file_name(&crate_name, crate_type);
- wrapper_name.replace('_', "-")
-}
-use super::build_sysroot;
+use super::bench::SIMPLE_RAYTRACER;
+use super::build_sysroot::{self, SYSROOT_SRC};
use super::config;
use super::path::{Dirs, RelPath};
use super::prepare::GitRepo;
-use super::rustc_info::{get_cargo_path, get_wrapper_file_name};
-use super::utils::{
- hyperfine_command, spawn_and_wait, spawn_and_wait_with_input, CargoProject, Compiler,
-};
+use super::rustc_info::get_host_triple;
+use super::utils::{spawn_and_wait, spawn_and_wait_with_input, CargoProject, Compiler};
use super::SysrootKind;
use std::env;
use std::ffi::OsStr;
struct TestCase {
config: &'static str,
- func: &'static dyn Fn(&TestRunner),
+ cmd: TestCaseCmd,
+}
+
+enum TestCaseCmd {
+ Custom { func: &'static dyn Fn(&TestRunner) },
+ BuildLib { source: &'static str, crate_types: &'static str },
+ BuildBinAndRun { source: &'static str, args: &'static [&'static str] },
+ JitBin { source: &'static str, args: &'static str },
}
impl TestCase {
- const fn new(config: &'static str, func: &'static dyn Fn(&TestRunner)) -> Self {
- Self { config, func }
+ // FIXME reduce usage of custom test case commands
+ const fn custom(config: &'static str, func: &'static dyn Fn(&TestRunner)) -> Self {
+ Self { config, cmd: TestCaseCmd::Custom { func } }
+ }
+
+ const fn build_lib(
+ config: &'static str,
+ source: &'static str,
+ crate_types: &'static str,
+ ) -> Self {
+ Self { config, cmd: TestCaseCmd::BuildLib { source, crate_types } }
+ }
+
+ const fn build_bin_and_run(
+ config: &'static str,
+ source: &'static str,
+ args: &'static [&'static str],
+ ) -> Self {
+ Self { config, cmd: TestCaseCmd::BuildBinAndRun { source, args } }
+ }
+
+ const fn jit_bin(config: &'static str, source: &'static str, args: &'static str) -> Self {
+ Self { config, cmd: TestCaseCmd::JitBin { source, args } }
}
}
const NO_SYSROOT_SUITE: &[TestCase] = &[
- TestCase::new("build.mini_core", &|runner| {
- runner.run_rustc([
- "example/mini_core.rs",
- "--crate-name",
- "mini_core",
- "--crate-type",
- "lib,dylib",
- "--target",
- &runner.target_compiler.triple,
- ]);
- }),
- TestCase::new("build.example", &|runner| {
- runner.run_rustc([
- "example/example.rs",
- "--crate-type",
- "lib",
- "--target",
- &runner.target_compiler.triple,
- ]);
- }),
- TestCase::new("jit.mini_core_hello_world", &|runner| {
- let mut jit_cmd = runner.rustc_command([
- "-Zunstable-options",
- "-Cllvm-args=mode=jit",
- "-Cprefer-dynamic",
- "example/mini_core_hello_world.rs",
- "--cfg",
- "jit",
- "--target",
- &runner.target_compiler.triple,
- ]);
- jit_cmd.env("CG_CLIF_JIT_ARGS", "abc bcd");
- spawn_and_wait(jit_cmd);
-
- eprintln!("[JIT-lazy] mini_core_hello_world");
- let mut jit_cmd = runner.rustc_command([
- "-Zunstable-options",
- "-Cllvm-args=mode=jit-lazy",
- "-Cprefer-dynamic",
- "example/mini_core_hello_world.rs",
- "--cfg",
- "jit",
- "--target",
- &runner.target_compiler.triple,
- ]);
- jit_cmd.env("CG_CLIF_JIT_ARGS", "abc bcd");
- spawn_and_wait(jit_cmd);
- }),
- TestCase::new("aot.mini_core_hello_world", &|runner| {
- runner.run_rustc([
- "example/mini_core_hello_world.rs",
- "--crate-name",
- "mini_core_hello_world",
- "--crate-type",
- "bin",
- "-g",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("mini_core_hello_world", ["abc", "bcd"]);
- }),
+ TestCase::build_lib("build.mini_core", "example/mini_core.rs", "lib,dylib"),
+ TestCase::build_lib("build.example", "example/example.rs", "lib"),
+ TestCase::jit_bin("jit.mini_core_hello_world", "example/mini_core_hello_world.rs", "abc bcd"),
+ TestCase::build_bin_and_run(
+ "aot.mini_core_hello_world",
+ "example/mini_core_hello_world.rs",
+ &["abc", "bcd"],
+ ),
];
const BASE_SYSROOT_SUITE: &[TestCase] = &[
- TestCase::new("aot.arbitrary_self_types_pointers_and_wrappers", &|runner| {
- runner.run_rustc([
- "example/arbitrary_self_types_pointers_and_wrappers.rs",
- "--crate-name",
- "arbitrary_self_types_pointers_and_wrappers",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("arbitrary_self_types_pointers_and_wrappers", []);
- }),
- TestCase::new("aot.issue_91827_extern_types", &|runner| {
- runner.run_rustc([
- "example/issue-91827-extern-types.rs",
- "--crate-name",
- "issue_91827_extern_types",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("issue_91827_extern_types", []);
- }),
- TestCase::new("build.alloc_system", &|runner| {
- runner.run_rustc([
- "example/alloc_system.rs",
- "--crate-type",
- "lib",
- "--target",
- &runner.target_compiler.triple,
- ]);
- }),
- TestCase::new("aot.alloc_example", &|runner| {
- runner.run_rustc([
- "example/alloc_example.rs",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("alloc_example", []);
- }),
- TestCase::new("jit.std_example", &|runner| {
- runner.run_rustc([
- "-Zunstable-options",
- "-Cllvm-args=mode=jit",
- "-Cprefer-dynamic",
- "example/std_example.rs",
- "--target",
- &runner.target_compiler.triple,
- ]);
-
- eprintln!("[JIT-lazy] std_example");
- runner.run_rustc([
- "-Zunstable-options",
- "-Cllvm-args=mode=jit-lazy",
- "-Cprefer-dynamic",
- "example/std_example.rs",
- "--target",
- &runner.target_compiler.triple,
- ]);
- }),
- TestCase::new("aot.std_example", &|runner| {
- runner.run_rustc([
- "example/std_example.rs",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("std_example", ["arg"]);
- }),
- TestCase::new("aot.dst_field_align", &|runner| {
- runner.run_rustc([
- "example/dst-field-align.rs",
- "--crate-name",
- "dst_field_align",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("dst_field_align", []);
- }),
- TestCase::new("aot.subslice-patterns-const-eval", &|runner| {
- runner.run_rustc([
- "example/subslice-patterns-const-eval.rs",
- "--crate-type",
- "bin",
- "-Cpanic=abort",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("subslice-patterns-const-eval", []);
- }),
- TestCase::new("aot.track-caller-attribute", &|runner| {
- runner.run_rustc([
- "example/track-caller-attribute.rs",
- "--crate-type",
- "bin",
- "-Cpanic=abort",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("track-caller-attribute", []);
- }),
- TestCase::new("aot.float-minmax-pass", &|runner| {
- runner.run_rustc([
- "example/float-minmax-pass.rs",
- "--crate-type",
- "bin",
- "-Cpanic=abort",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("float-minmax-pass", []);
- }),
- TestCase::new("aot.mod_bench", &|runner| {
- runner.run_rustc([
- "example/mod_bench.rs",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("mod_bench", []);
- }),
- TestCase::new("aot.issue-72793", &|runner| {
- runner.run_rustc([
- "example/issue-72793.rs",
- "--crate-type",
- "bin",
- "--target",
- &runner.target_compiler.triple,
- ]);
- runner.run_out_command("issue-72793", []);
- }),
+ TestCase::build_bin_and_run(
+ "aot.arbitrary_self_types_pointers_and_wrappers",
+ "example/arbitrary_self_types_pointers_and_wrappers.rs",
+ &[],
+ ),
+ TestCase::build_bin_and_run(
+ "aot.issue_91827_extern_types",
+ "example/issue-91827-extern-types.rs",
+ &[],
+ ),
+ TestCase::build_lib("build.alloc_system", "example/alloc_system.rs", "lib"),
+ TestCase::build_bin_and_run("aot.alloc_example", "example/alloc_example.rs", &[]),
+ TestCase::jit_bin("jit.std_example", "example/std_example.rs", ""),
+ TestCase::build_bin_and_run("aot.std_example", "example/std_example.rs", &["arg"]),
+ TestCase::build_bin_and_run("aot.dst_field_align", "example/dst-field-align.rs", &[]),
+ TestCase::build_bin_and_run(
+ "aot.subslice-patterns-const-eval",
+ "example/subslice-patterns-const-eval.rs",
+ &[],
+ ),
+ TestCase::build_bin_and_run(
+ "aot.track-caller-attribute",
+ "example/track-caller-attribute.rs",
+ &[],
+ ),
+ TestCase::build_bin_and_run("aot.float-minmax-pass", "example/float-minmax-pass.rs", &[]),
+ TestCase::build_bin_and_run("aot.mod_bench", "example/mod_bench.rs", &[]),
+ TestCase::build_bin_and_run("aot.issue-72793", "example/issue-72793.rs", &[]),
];
pub(crate) static RAND_REPO: GitRepo =
GitRepo::github("rust-random", "rand", "0f933f9c7176e53b2a3c7952ded484e1783f0bf1", "rand");
-static RAND: CargoProject = CargoProject::new(&RAND_REPO.source_dir(), "rand");
+pub(crate) static RAND: CargoProject = CargoProject::new(&RAND_REPO.source_dir(), "rand");
pub(crate) static REGEX_REPO: GitRepo =
GitRepo::github("rust-lang", "regex", "341f207c1071f7290e3f228c710817c280c8dca1", "regex");
-static REGEX: CargoProject = CargoProject::new(®EX_REPO.source_dir(), "regex");
+pub(crate) static REGEX: CargoProject = CargoProject::new(®EX_REPO.source_dir(), "regex");
pub(crate) static PORTABLE_SIMD_REPO: GitRepo = GitRepo::github(
"rust-lang",
"portable-simd",
- "d5cd4a8112d958bd3a252327e0d069a6363249bd",
+ "582239ac3b32007613df04d7ffa78dc30f4c5645",
"portable-simd",
);
-static PORTABLE_SIMD: CargoProject =
+pub(crate) static PORTABLE_SIMD: CargoProject =
CargoProject::new(&PORTABLE_SIMD_REPO.source_dir(), "portable_simd");
-pub(crate) static SIMPLE_RAYTRACER_REPO: GitRepo = GitRepo::github(
- "ebobby",
- "simple-raytracer",
- "804a7a21b9e673a482797aa289a18ed480e4d813",
- "<none>",
-);
-
-pub(crate) static SIMPLE_RAYTRACER: CargoProject =
- CargoProject::new(&SIMPLE_RAYTRACER_REPO.source_dir(), "simple_raytracer");
-
-static LIBCORE_TESTS: CargoProject =
- CargoProject::new(&RelPath::BUILD_SYSROOT.join("sysroot_src/library/core/tests"), "core_tests");
+pub(crate) static LIBCORE_TESTS: CargoProject =
+ CargoProject::new(&SYSROOT_SRC.join("library/core/tests"), "core_tests");
const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
- TestCase::new("test.rust-random/rand", &|runner| {
- spawn_and_wait(RAND.clean(&runner.target_compiler.cargo, &runner.dirs));
+ TestCase::custom("test.rust-random/rand", &|runner| {
+ RAND.clean(&runner.dirs);
if runner.is_native {
eprintln!("[TEST] rust-random/rand");
spawn_and_wait(build_cmd);
}
}),
- TestCase::new("bench.simple-raytracer", &|runner| {
- let run_runs = env::var("RUN_RUNS").unwrap_or("10".to_string()).parse().unwrap();
-
- if runner.is_native {
- eprintln!("[BENCH COMPILE] ebobby/simple-raytracer");
- let cargo_clif = RelPath::DIST
- .to_path(&runner.dirs)
- .join(get_wrapper_file_name("cargo-clif", "bin"));
- let manifest_path = SIMPLE_RAYTRACER.manifest_path(&runner.dirs);
- let target_dir = SIMPLE_RAYTRACER.target_dir(&runner.dirs);
-
- let clean_cmd = format!(
- "cargo clean --manifest-path {manifest_path} --target-dir {target_dir}",
- manifest_path = manifest_path.display(),
- target_dir = target_dir.display(),
- );
- let llvm_build_cmd = format!(
- "cargo build --manifest-path {manifest_path} --target-dir {target_dir}",
- manifest_path = manifest_path.display(),
- target_dir = target_dir.display(),
- );
- let clif_build_cmd = format!(
- "{cargo_clif} build --manifest-path {manifest_path} --target-dir {target_dir}",
- cargo_clif = cargo_clif.display(),
- manifest_path = manifest_path.display(),
- target_dir = target_dir.display(),
- );
-
- let bench_compile =
- hyperfine_command(1, run_runs, Some(&clean_cmd), &llvm_build_cmd, &clif_build_cmd);
-
- spawn_and_wait(bench_compile);
-
- eprintln!("[BENCH RUN] ebobby/simple-raytracer");
- fs::copy(
- target_dir.join("debug").join("main"),
- RelPath::BUILD.to_path(&runner.dirs).join("raytracer_cg_clif"),
- )
- .unwrap();
-
- let mut bench_run =
- hyperfine_command(0, run_runs, None, "./raytracer_cg_llvm", "./raytracer_cg_clif");
- bench_run.current_dir(RelPath::BUILD.to_path(&runner.dirs));
- spawn_and_wait(bench_run);
- } else {
- spawn_and_wait(SIMPLE_RAYTRACER.clean(&runner.target_compiler.cargo, &runner.dirs));
- eprintln!("[BENCH COMPILE] ebobby/simple-raytracer (skipped)");
- eprintln!("[COMPILE] ebobby/simple-raytracer");
- spawn_and_wait(SIMPLE_RAYTRACER.build(&runner.target_compiler, &runner.dirs));
- eprintln!("[BENCH RUN] ebobby/simple-raytracer (skipped)");
- }
+ TestCase::custom("test.simple-raytracer", &|runner| {
+ SIMPLE_RAYTRACER.clean(&runner.dirs);
+ spawn_and_wait(SIMPLE_RAYTRACER.build(&runner.target_compiler, &runner.dirs));
}),
- TestCase::new("test.libcore", &|runner| {
- spawn_and_wait(LIBCORE_TESTS.clean(&runner.host_compiler.cargo, &runner.dirs));
+ TestCase::custom("test.libcore", &|runner| {
+ LIBCORE_TESTS.clean(&runner.dirs);
if runner.is_native {
spawn_and_wait(LIBCORE_TESTS.test(&runner.target_compiler, &runner.dirs));
spawn_and_wait(build_cmd);
}
}),
- TestCase::new("test.regex-shootout-regex-dna", &|runner| {
- spawn_and_wait(REGEX.clean(&runner.target_compiler.cargo, &runner.dirs));
+ TestCase::custom("test.regex-shootout-regex-dna", &|runner| {
+ REGEX.clean(&runner.dirs);
// newer aho_corasick versions throw a deprecation warning
let lint_rust_flags = format!("{} --cap-lints warn", runner.target_compiler.rustflags);
REGEX.source_dir(&runner.dirs).join("examples").join("regexdna-input.txt"),
)
.unwrap();
- let expected_path =
- REGEX.source_dir(&runner.dirs).join("examples").join("regexdna-output.txt");
- let expected = fs::read_to_string(&expected_path).unwrap();
+ let expected = fs::read_to_string(
+ REGEX.source_dir(&runner.dirs).join("examples").join("regexdna-output.txt"),
+ )
+ .unwrap();
let output = spawn_and_wait_with_input(run_cmd, input);
// Make sure `[codegen mono items] start` doesn't poison the diff
let output_matches = expected.lines().eq(output.lines());
if !output_matches {
- let res_path = REGEX.source_dir(&runner.dirs).join("res.txt");
- fs::write(&res_path, &output).unwrap();
-
- if cfg!(windows) {
- println!("Output files don't match!");
- println!("Expected Output:\n{}", expected);
- println!("Actual Output:\n{}", output);
- } else {
- let mut diff = Command::new("diff");
- diff.arg("-u");
- diff.arg(res_path);
- diff.arg(expected_path);
- spawn_and_wait(diff);
- }
+ println!("Output files don't match!");
+ println!("Expected Output:\n{}", expected);
+ println!("Actual Output:\n{}", output);
std::process::exit(1);
}
}
}),
- TestCase::new("test.regex", &|runner| {
- spawn_and_wait(REGEX.clean(&runner.host_compiler.cargo, &runner.dirs));
+ TestCase::custom("test.regex", &|runner| {
+ REGEX.clean(&runner.dirs);
// newer aho_corasick versions throw a deprecation warning
let lint_rust_flags = format!("{} --cap-lints warn", runner.target_compiler.rustflags);
spawn_and_wait(build_cmd);
}
}),
- TestCase::new("test.portable-simd", &|runner| {
- spawn_and_wait(PORTABLE_SIMD.clean(&runner.host_compiler.cargo, &runner.dirs));
+ TestCase::custom("test.portable-simd", &|runner| {
+ PORTABLE_SIMD.clean(&runner.dirs);
let mut build_cmd = PORTABLE_SIMD.build(&runner.target_compiler, &runner.dirs);
build_cmd.arg("--all-targets");
channel: &str,
sysroot_kind: SysrootKind,
cg_clif_dylib: &Path,
- host_triple: &str,
- target_triple: &str,
+ bootstrap_host_compiler: &Compiler,
+ target_triple: String,
) {
- let runner = TestRunner::new(dirs.clone(), host_triple.to_string(), target_triple.to_string());
-
if config::get_bool("testsuite.no_sysroot") {
- build_sysroot::build_sysroot(
+ let target_compiler = build_sysroot::build_sysroot(
dirs,
channel,
SysrootKind::None,
cg_clif_dylib,
- &host_triple,
- &target_triple,
+ bootstrap_host_compiler,
+ target_triple.clone(),
);
+ let runner =
+ TestRunner::new(dirs.clone(), target_compiler, get_host_triple() == target_triple);
+
BUILD_EXAMPLE_OUT_DIR.ensure_fresh(dirs);
runner.run_testsuite(NO_SYSROOT_SUITE);
} else {
let run_extended_sysroot = config::get_bool("testsuite.extended_sysroot");
if run_base_sysroot || run_extended_sysroot {
- build_sysroot::build_sysroot(
+ let target_compiler = build_sysroot::build_sysroot(
dirs,
channel,
sysroot_kind,
cg_clif_dylib,
- &host_triple,
- &target_triple,
+ bootstrap_host_compiler,
+ target_triple.clone(),
);
- }
- if run_base_sysroot {
- runner.run_testsuite(BASE_SYSROOT_SUITE);
- } else {
- eprintln!("[SKIP] base_sysroot tests");
- }
+ let runner =
+ TestRunner::new(dirs.clone(), target_compiler, get_host_triple() == target_triple);
- if run_extended_sysroot {
- runner.run_testsuite(EXTENDED_SYSROOT_SUITE);
- } else {
- eprintln!("[SKIP] extended_sysroot tests");
+ if run_base_sysroot {
+ runner.run_testsuite(BASE_SYSROOT_SUITE);
+ } else {
+ eprintln!("[SKIP] base_sysroot tests");
+ }
+
+ if run_extended_sysroot {
+ runner.run_testsuite(EXTENDED_SYSROOT_SUITE);
+ } else {
+ eprintln!("[SKIP] extended_sysroot tests");
+ }
}
}
is_native: bool,
jit_supported: bool,
dirs: Dirs,
- host_compiler: Compiler,
target_compiler: Compiler,
}
impl TestRunner {
- pub fn new(dirs: Dirs, host_triple: String, target_triple: String) -> Self {
- let is_native = host_triple == target_triple;
- let jit_supported =
- target_triple.contains("x86_64") && is_native && !host_triple.contains("windows");
-
- let rustc_clif =
- RelPath::DIST.to_path(&dirs).join(get_wrapper_file_name("rustc-clif", "bin"));
- let rustdoc_clif =
- RelPath::DIST.to_path(&dirs).join(get_wrapper_file_name("rustdoc-clif", "bin"));
-
- let mut rustflags = env::var("RUSTFLAGS").ok().unwrap_or("".to_string());
- let mut runner = vec![];
-
- if !is_native {
- match target_triple.as_str() {
- "aarch64-unknown-linux-gnu" => {
- // We are cross-compiling for aarch64. Use the correct linker and run tests in qemu.
- rustflags = format!("-Clinker=aarch64-linux-gnu-gcc{}", rustflags);
- runner = vec![
- "qemu-aarch64".to_owned(),
- "-L".to_owned(),
- "/usr/aarch64-linux-gnu".to_owned(),
- ];
- }
- "s390x-unknown-linux-gnu" => {
- // We are cross-compiling for s390x. Use the correct linker and run tests in qemu.
- rustflags = format!("-Clinker=s390x-linux-gnu-gcc{}", rustflags);
- runner = vec![
- "qemu-s390x".to_owned(),
- "-L".to_owned(),
- "/usr/s390x-linux-gnu".to_owned(),
- ];
- }
- "x86_64-pc-windows-gnu" => {
- // We are cross-compiling for Windows. Run tests in wine.
- runner = vec!["wine".to_owned()];
- }
- _ => {
- println!("Unknown non-native platform");
- }
- }
+ pub fn new(dirs: Dirs, mut target_compiler: Compiler, is_native: bool) -> Self {
+ if let Ok(rustflags) = env::var("RUSTFLAGS") {
+ target_compiler.rustflags.push(' ');
+ target_compiler.rustflags.push_str(&rustflags);
+ }
+ if let Ok(rustdocflags) = env::var("RUSTDOCFLAGS") {
+ target_compiler.rustdocflags.push(' ');
+ target_compiler.rustdocflags.push_str(&rustdocflags);
}
// FIXME fix `#[linkage = "extern_weak"]` without this
- if target_triple.contains("darwin") {
- rustflags = format!("{} -Clink-arg=-undefined -Clink-arg=dynamic_lookup", rustflags);
+ if target_compiler.triple.contains("darwin") {
+ target_compiler.rustflags.push_str(" -Clink-arg=-undefined -Clink-arg=dynamic_lookup");
}
- let host_compiler = Compiler {
- cargo: get_cargo_path(),
- rustc: rustc_clif.clone(),
- rustdoc: rustdoc_clif.clone(),
- rustflags: String::new(),
- rustdocflags: String::new(),
- triple: host_triple,
- runner: vec![],
- };
-
- let target_compiler = Compiler {
- cargo: get_cargo_path(),
- rustc: rustc_clif,
- rustdoc: rustdoc_clif,
- rustflags: rustflags.clone(),
- rustdocflags: rustflags,
- triple: target_triple,
- runner,
- };
-
- Self { is_native, jit_supported, dirs, host_compiler, target_compiler }
+ let jit_supported = is_native
+ && target_compiler.triple.contains("x86_64")
+ && !target_compiler.triple.contains("windows");
+
+ Self { is_native, jit_supported, dirs, target_compiler }
}
pub fn run_testsuite(&self, tests: &[TestCase]) {
- for &TestCase { config, func } in tests {
+ for TestCase { config, cmd } in tests {
let (tag, testname) = config.split_once('.').unwrap();
let tag = tag.to_uppercase();
let is_jit_test = tag == "JIT";
eprintln!("[{tag}] {testname}");
}
- func(self);
+ match *cmd {
+ TestCaseCmd::Custom { func } => func(self),
+ TestCaseCmd::BuildLib { source, crate_types } => {
+ self.run_rustc([source, "--crate-type", crate_types]);
+ }
+ TestCaseCmd::BuildBinAndRun { source, args } => {
+ self.run_rustc([source]);
+ self.run_out_command(
+ source.split('/').last().unwrap().split('.').next().unwrap(),
+ args,
+ );
+ }
+ TestCaseCmd::JitBin { source, args } => {
+ let mut jit_cmd = self.rustc_command([
+ "-Zunstable-options",
+ "-Cllvm-args=mode=jit",
+ "-Cprefer-dynamic",
+ source,
+ "--cfg",
+ "jit",
+ ]);
+ if !args.is_empty() {
+ jit_cmd.env("CG_CLIF_JIT_ARGS", args);
+ }
+ spawn_and_wait(jit_cmd);
+
+ eprintln!("[JIT-lazy] {testname}");
+ let mut jit_cmd = self.rustc_command([
+ "-Zunstable-options",
+ "-Cllvm-args=mode=jit-lazy",
+ "-Cprefer-dynamic",
+ source,
+ "--cfg",
+ "jit",
+ ]);
+ if !args.is_empty() {
+ jit_cmd.env("CG_CLIF_JIT_ARGS", args);
+ }
+ spawn_and_wait(jit_cmd);
+ }
+ }
}
}
cmd.arg("--out-dir");
cmd.arg(format!("{}", BUILD_EXAMPLE_OUT_DIR.to_path(&self.dirs).display()));
cmd.arg("-Cdebuginfo=2");
+ cmd.arg("--target");
+ cmd.arg(&self.target_compiler.triple);
+ cmd.arg("-Cpanic=abort");
cmd.args(args);
cmd
}
spawn_and_wait(self.rustc_command(args));
}
- fn run_out_command<'a, I>(&self, name: &str, args: I)
- where
- I: IntoIterator<Item = &'a str>,
- {
+ fn run_out_command<'a>(&self, name: &str, args: &[&str]) {
let mut full_cmd = vec![];
// Prepend the RUN_WRAPPER's
BUILD_EXAMPLE_OUT_DIR.to_path(&self.dirs).join(name).to_str().unwrap().to_string(),
);
- for arg in args.into_iter() {
+ for arg in args {
full_cmd.push(arg.to_string());
}
--- /dev/null
+The build system of cg_clif.
+
+USAGE:
+ ./y.rs prepare [--out-dir DIR]
+ ./y.rs build [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
+ ./y.rs test [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
+ ./y.rs abi-cafe [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
+ ./y.rs bench [--debug] [--sysroot none|clif|llvm] [--out-dir DIR] [--no-unstable-features]
+
+OPTIONS:
+ --debug
+ Build cg_clif and the standard library in debug mode rather than release mode.
+ Warning: An unoptimized cg_clif is very slow.
+
+ --sysroot none|clif|llvm
+ Which sysroot libraries to use:
+ `none` will not include any standard library in the sysroot.
+ `clif` will build the standard library using Cranelift.
+ `llvm` will use the pre-compiled standard library of rustc which is compiled with LLVM.
+
+ --out-dir DIR
+ Specify the directory in which the download, build and dist directories are stored.
+ By default this is the working directory.
+
+ --no-unstable-features
+ Some features are not yet ready for production usage. This option will disable these
+ features. This includes the JIT mode and inline assembly support.
+
+REQUIREMENTS:
+ * Rustup: The build system has a hard coded dependency on rustup to install the right nightly
+ version and make sure it is used where necessary.
+ * Git: `./y.rs prepare` uses git for applying patches and on Windows for downloading test repos.
+ * Curl and tar (non-Windows only): Used by `./y.rs prepare` to download a single commit for
+ repos. Git will be used to clone the whole repo when using Windows.
+ * [Hyperfine](https://github.com/sharkdp/hyperfine/): Used for benchmarking with `./y.rs bench`.
use std::env;
use std::fs;
-use std::io::Write;
+use std::io::{self, Write};
use std::path::{Path, PathBuf};
use std::process::{self, Command, Stdio};
use super::path::{Dirs, RelPath};
-use super::rustc_info::{get_cargo_path, get_host_triple, get_rustc_path, get_rustdoc_path};
+use super::rustc_info::{get_cargo_path, get_rustc_path, get_rustdoc_path};
+#[derive(Clone, Debug)]
pub(crate) struct Compiler {
pub(crate) cargo: PathBuf,
pub(crate) rustc: PathBuf,
}
impl Compiler {
- pub(crate) fn host() -> Compiler {
+ pub(crate) fn bootstrap_with_triple(triple: String) -> Compiler {
Compiler {
cargo: get_cargo_path(),
rustc: get_rustc_path(),
rustdoc: get_rustdoc_path(),
rustflags: String::new(),
rustdocflags: String::new(),
- triple: get_host_triple(),
+ triple,
runner: vec![],
}
}
- pub(crate) fn with_triple(triple: String) -> Compiler {
- Compiler {
- cargo: get_cargo_path(),
- rustc: get_rustc_path(),
- rustdoc: get_rustdoc_path(),
- rustflags: String::new(),
- rustdocflags: String::new(),
- triple,
- runner: vec![],
+ pub(crate) fn set_cross_linker_and_runner(&mut self) {
+ match self.triple.as_str() {
+ "aarch64-unknown-linux-gnu" => {
+ // We are cross-compiling for aarch64. Use the correct linker and run tests in qemu.
+ self.rustflags += " -Clinker=aarch64-linux-gnu-gcc";
+ self.rustdocflags += " -Clinker=aarch64-linux-gnu-gcc";
+ self.runner = vec![
+ "qemu-aarch64".to_owned(),
+ "-L".to_owned(),
+ "/usr/aarch64-linux-gnu".to_owned(),
+ ];
+ }
+ "s390x-unknown-linux-gnu" => {
+ // We are cross-compiling for s390x. Use the correct linker and run tests in qemu.
+ self.rustflags += " -Clinker=s390x-linux-gnu-gcc";
+ self.rustdocflags += " -Clinker=s390x-linux-gnu-gcc";
+ self.runner = vec![
+ "qemu-s390x".to_owned(),
+ "-L".to_owned(),
+ "/usr/s390x-linux-gnu".to_owned(),
+ ];
+ }
+ "x86_64-pc-windows-gnu" => {
+ // We are cross-compiling for Windows. Run tests in wine.
+ self.runner = vec!["wine".to_owned()];
+ }
+ _ => {
+ println!("Unknown non-native platform");
+ }
}
}
}
RelPath::BUILD.join(self.target).to_path(dirs)
}
+ #[must_use]
fn base_cmd(&self, command: &str, cargo: &Path, dirs: &Dirs) -> Command {
let mut cmd = Command::new(cargo);
.arg("--manifest-path")
.arg(self.manifest_path(dirs))
.arg("--target-dir")
- .arg(self.target_dir(dirs));
+ .arg(self.target_dir(dirs))
+ .arg("--frozen");
cmd
}
+ #[must_use]
fn build_cmd(&self, command: &str, compiler: &Compiler, dirs: &Dirs) -> Command {
let mut cmd = self.base_cmd(command, &compiler.cargo, dirs);
cmd
}
- #[must_use]
- pub(crate) fn clean(&self, cargo: &Path, dirs: &Dirs) -> Command {
- self.base_cmd("clean", cargo, dirs)
+ pub(crate) fn clean(&self, dirs: &Dirs) {
+ let _ = fs::remove_dir_all(self.target_dir(dirs));
}
#[must_use]
bench
}
+#[must_use]
+pub(crate) fn git_command<'a>(repo_dir: impl Into<Option<&'a Path>>, cmd: &str) -> Command {
+ let mut git_cmd = Command::new("git");
+ git_cmd
+ .arg("-c")
+ .arg("user.name=Dummy")
+ .arg("-c")
+ .arg("user.email=dummy@example.com")
+ .arg("-c")
+ .arg("core.autocrlf=false")
+ .arg(cmd);
+ if let Some(repo_dir) = repo_dir.into() {
+ git_cmd.current_dir(repo_dir);
+ }
+ git_cmd
+}
+
#[track_caller]
pub(crate) fn try_hard_link(src: impl AsRef<Path>, dst: impl AsRef<Path>) {
let src = src.as_ref();
}
}
+// Based on the retry function in rust's src/ci/shared.sh
+#[track_caller]
+pub(crate) fn retry_spawn_and_wait(tries: u64, mut cmd: Command) {
+ for i in 1..tries + 1 {
+ if i != 1 {
+ println!("Command failed. Attempt {i}/{tries}:");
+ }
+ if cmd.spawn().unwrap().wait().unwrap().success() {
+ return;
+ }
+ std::thread::sleep(std::time::Duration::from_secs(i * 5));
+ }
+ println!("The command has failed after {tries} attempts.");
+ process::exit(1);
+}
+
#[track_caller]
pub(crate) fn spawn_and_wait_with_input(mut cmd: Command, input: String) -> String {
let mut child = cmd
String::from_utf8(output.stdout).unwrap()
}
+pub(crate) fn remove_dir_if_exists(path: &Path) {
+ match fs::remove_dir_all(&path) {
+ Ok(()) => {}
+ Err(err) if err.kind() == io::ErrorKind::NotFound => {}
+ Err(err) => panic!("Failed to remove {path}: {err}", path = path.display()),
+ }
+}
+
pub(crate) fn copy_dir_recursively(from: &Path, to: &Path) {
for entry in fs::read_dir(from).unwrap() {
let entry = entry.unwrap();
#!/usr/bin/env bash
set -e
-rm -rf build_sysroot/{sysroot_src/,target/,compiler-builtins/,rustc_version}
-rm -rf target/ build/ dist/ perf.data{,.old} y.bin
-rm -rf download/
+rm -rf target/ download/ build/ dist/ y.bin y.bin.dSYM y.exe y.pdb
# Kept for now in case someone updates their checkout of cg_clif before running clean_all.sh
# FIXME remove at some point in the future
rm -rf rand/ regex/ simple-raytracer/ portable-simd/ abi-checker/ abi-cafe/
+rm -rf build_sysroot/{sysroot_src/,target/,compiler-builtins/,rustc_version}
testsuite.extended_sysroot
test.rust-random/rand
-bench.simple-raytracer
+test.simple-raytracer
test.libcore
test.regex-shootout-regex-dna
test.regex
test.portable-simd
-
-testsuite.abi-cafe
+++ /dev/null
-From b742f03694b920cc14400727d54424e8e1b60928 Mon Sep 17 00:00:00 2001
-From: bjorn3 <bjorn3@users.noreply.github.com>
-Date: Thu, 18 Nov 2021 19:28:40 +0100
-Subject: [PATCH] Disable unsupported tests
-
----
- crates/core_simd/src/elements/int.rs | 8 ++++++++
- crates/core_simd/src/elements/uint.rs | 4 ++++
- crates/core_simd/src/masks/full_masks.rs | 6 ++++++
- crates/core_simd/src/vector.rs | 2 ++
- crates/core_simd/tests/masks.rs | 3 ---
- 5 files changed, 20 insertions(+), 3 deletions(-)
-
-diff --git a/crates/core_simd/src/vector.rs b/crates/core_simd/src/vector.rs
-index e8e8f68..7173c24 100644
---- a/crates/core_simd/src/vector.rs
-+++ b/crates/core_simd/src/vector.rs
-@@ -250,6 +250,7 @@ where
- unsafe { intrinsics::simd_cast(self) }
- }
-
-+ /*
- /// Reads from potentially discontiguous indices in `slice` to construct a SIMD vector.
- /// If an index is out-of-bounds, the lane is instead selected from the `or` vector.
- ///
-@@ -473,6 +474,7 @@ where
- // Cleared ☢️ *mut T Zone
- }
- }
-+ */
- }
-
- impl<T, const LANES: usize> Copy for Simd<T, LANES>
---
-2.25.1
index 0000000..46fd999
--- /dev/null
+++ b/library/core/tests/Cargo.toml
-@@ -0,0 +1,11 @@
+@@ -0,0 +1,12 @@
+[package]
+name = "core"
+version = "0.0.0"
+path = "lib.rs"
+
+[dependencies]
-+rand = "0.7"
++rand = { version = "0.8.5", default-features = false }
++rand_xorshift = { version = "0.3.0", default-features = false }
--
2.21.0 (Apple Git-122)
[toolchain]
-channel = "nightly-2022-12-13"
+channel = "nightly-2023-01-20"
components = ["rust-src", "rustc-dev", "llvm-tools-preview"]
env::set_var("RUSTDOCFLAGS", env::var("RUSTDOCFLAGS").unwrap_or(String::new()) + &rustflags);
// Ensure that the right toolchain is used
- env::set_var("RUSTUP_TOOLCHAIN", env!("RUSTUP_TOOLCHAIN"));
+ env::set_var("RUSTUP_TOOLCHAIN", env!("TOOLCHAIN_NAME"));
let args: Vec<_> = match env::args().nth(1).as_deref() {
Some("jit") => {
}
// Ensure that the right toolchain is used
- env::set_var("RUSTUP_TOOLCHAIN", env!("RUSTUP_TOOLCHAIN"));
+ env::set_var("RUSTUP_TOOLCHAIN", env!("TOOLCHAIN_NAME"));
#[cfg(unix)]
Command::new("rustc").args(args).exec();
}
// Ensure that the right toolchain is used
- env::set_var("RUSTUP_TOOLCHAIN", env!("RUSTUP_TOOLCHAIN"));
+ env::set_var("RUSTUP_TOOLCHAIN", env!("TOOLCHAIN_NAME"));
#[cfg(unix)]
Command::new("rustdoc").args(args).exec();
done
./clean_all.sh
- ./y.rs prepare
- (cd build_sysroot && cargo update)
+ ./y.rs prepare
+ (cd download/sysroot && cargo update && cargo fetch && cp Cargo.lock ../../build_sysroot/)
;;
"commit")
git add rust-toolchain build_sysroot/Cargo.lock
git checkout -- .
git checkout "$(rustc -V | cut -d' ' -f3 | tr -d '(')"
-git am ../patches/*-sysroot-*.patch
+git -c user.name=Dummy -c user.email=dummy@example.com am ../patches/*-sysroot-*.patch
git apply - <<EOF
diff --git a/library/alloc/Cargo.toml b/library/alloc/Cargo.toml
+compiler_builtins = { version = "0.1.66", features = ['rustc-dep-of-std', 'no-asm'] }
[dev-dependencies]
- rand = "0.7"
- rand_xorshift = "0.2"
+ rand = { version = "0.8.5", default-features = false, features = ["alloc"] }
+ rand_xorshift = "0.3.0"
EOF
cat > config.toml <<EOF
# FIXME remove once inline asm is fully supported
export RUSTFLAGS="$RUSTFLAGS --cfg=rustix_use_libc"
-export CFG_VIRTUAL_RUST_SOURCE_BASE_DIR="$(cd build_sysroot/sysroot_src; pwd)"
+export CFG_VIRTUAL_RUST_SOURCE_BASE_DIR="$(cd download/sysroot/sysroot_src; pwd)"
# Allow the testsuite to use llvm tools
host_triple=$(rustc -vV | grep host | cut -d: -f2 | tr -d " ")
command -v rg >/dev/null 2>&1 || cargo install ripgrep
rm -r tests/ui/{extern/,unsized-locals/,lto/,linkage*} || true
-for test in $(rg --files-with-matches "lto|// needs-asm-support|// needs-unwind" tests/{ui,incremental}); do
+for test in $(rg --files-with-matches "lto|// needs-asm-support|// needs-unwind" tests/{codegen-units,ui,incremental}); do
rm $test
done
# requires compiling with -Cpanic=unwind
rm -r tests/ui/macros/rfc-2011-nicer-assert-messages/
rm -r tests/run-make/test-benches
+rm tests/ui/test-attrs/test-type.rs
# vendor intrinsics
rm tests/ui/sse2.rs # cpuid not supported, so sse2 not detected
rm tests/ui/intrinsics/const-eval-select-x86_64.rs # requires x86_64 vendor intrinsics
rm tests/ui/simd/array-type.rs # "Index argument for `simd_insert` is not a constant"
-rm tests/ui/simd/intrinsic/generic-bitmask-pass.rs # simd_bitmask unimplemented
-rm tests/ui/simd/intrinsic/generic-as.rs # simd_as unimplemented
-rm tests/ui/simd/intrinsic/generic-arithmetic-saturating-pass.rs # simd_saturating_add unimplemented
rm tests/ui/simd/intrinsic/float-math-pass.rs # simd_fcos unimplemented
-rm tests/ui/simd/intrinsic/generic-gather-pass.rs # simd_gather unimplemented
-rm tests/ui/simd/intrinsic/generic-select-pass.rs # simd_select_bitmask unimplemented
-rm tests/ui/simd/issue-85915-simd-ptrs.rs # simd_gather unimplemented
-rm tests/ui/simd/issue-89193.rs # simd_gather unimplemented
-rm tests/ui/simd/simd-bitmask.rs # simd_bitmask unimplemented
# exotic linkages
rm tests/ui/issues/issue-33992.rs # unsupported linkages
rm tests/ui/target-feature/missing-plusminus.rs # error not implemented
rm tests/ui/fn/dyn-fn-alignment.rs # wants a 256 byte alignment
rm -r tests/run-make/emit-named-files # requires full --emit support
-rm tests/ui/abi/stack-probes.rs # stack probes not yet implemented
-rm tests/ui/simd/intrinsic/ptr-cast.rs # simd_expose_addr intrinsic unimplemented
rm -r tests/run-make/repr128-dwarf # debuginfo test
-rm tests/codegen-units/item-collection/asm-sym.rs # requires support for sym in asm!()
# optimization tests
# ==================
rm tests/ui/consts/issue-33537.rs # same
rm tests/ui/layout/valid_range_oob.rs # different ICE message
+rm tests/ui/consts/issue-miri-1910.rs # different error message
+rm tests/ui/consts/offset_ub.rs # same
+rm tests/ui/intrinsics/panic-uninitialized-zeroed.rs # same
+rm tests/ui/lint/lint-const-item-mutation.rs # same
+rm tests/ui/pattern/usefulness/doc-hidden-non-exhaustive.rs # same
+rm tests/ui/suggestions/derive-trait-for-method-call.rs # same
+rm tests/ui/typeck/issue-46112.rs # same
+
+rm tests/ui/proc-macro/crt-static.rs # extra warning about -Cpanic=abort for proc macros
+rm tests/ui/proc-macro/proc-macro-deprecated-attr.rs # same
+rm tests/ui/proc-macro/quote-debug.rs # same
+rm tests/ui/proc-macro/no-missing-docs.rs # same
+rm tests/ui/rust-2018/proc-macro-crate-in-paths.rs # same
+
# doesn't work due to the way the rustc test suite is invoked.
# should work when using ./x.py test the way it is intended
# ============================================================
# ============
rm tests/incremental/spike-neg1.rs # errors out for some reason
rm tests/incremental/spike-neg2.rs # same
-rm tests/ui/issues/issue-74564-if-expr-stack-overflow.rs # gives a stackoverflow before the backend runs
-rm tests/ui/mir/ssa-analysis-regression-50041.rs # produces ICE
-rm tests/ui/type-alias-impl-trait/assoc-projection-ice.rs # produces ICE
rm tests/ui/simd/intrinsic/generic-reduction-pass.rs # simd_reduce_add_unordered doesn't accept an accumulator for integer vectors
-rm tests/ui/runtime/out-of-stack.rs # SIGSEGV instead of SIGABRT for some reason (#1301)
+rm tests/ui/simd/intrinsic/generic-as.rs # crash when accessing vector type filed (#1318)
+rm tests/ui/simd/simd-bitmask.rs # crash
+
+rm tests/ui/dyn-star/dyn-star-to-dyn.rs
+rm tests/ui/dyn-star/dispatch-on-pin-mut.rs
# bugs in the test suite
# ======================
rm tests/ui/backtrace.rs # TODO warning
rm tests/ui/simple_global_asm.rs # TODO add needs-asm-support
-rm tests/ui/test-attrs/test-type.rs # TODO panic message on stderr. correct stdout
-# not sure if this is actually a bug in the test suite, but the symbol list shows the function without leading _ for some reason
-rm -r tests/run-make/native-link-modifier-bundle
rm tests/ui/process/nofile-limit.rs # TODO some AArch64 linking issue
-rm tests/ui/dyn-star/dispatch-on-pin-mut.rs # TODO failed assertion in vtable::get_ptr_and_method_ref
rm tests/ui/stdio-is-blocking.rs # really slow with unoptimized libstd
use cranelift_module::ModuleError;
use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
use rustc_middle::ty::layout::FnAbiOf;
+use rustc_session::Session;
use rustc_target::abi::call::{Conv, FnAbi};
use rustc_target::spec::abi::Abi;
default_call_conv: CallConv,
fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
) -> Signature {
- let call_conv = conv_to_call_conv(fn_abi.conv, default_call_conv);
+ let call_conv = conv_to_call_conv(tcx.sess, fn_abi.conv, default_call_conv);
let inputs = fn_abi.args.iter().map(|arg_abi| arg_abi.get_abi_param(tcx).into_iter()).flatten();
Signature { params, returns, call_conv }
}
-pub(crate) fn conv_to_call_conv(c: Conv, default_call_conv: CallConv) -> CallConv {
+pub(crate) fn conv_to_call_conv(sess: &Session, c: Conv, default_call_conv: CallConv) -> CallConv {
match c {
Conv::Rust | Conv::C => default_call_conv,
Conv::RustCold => CallConv::Cold,
Conv::X86_64SysV => CallConv::SystemV,
Conv::X86_64Win64 => CallConv::WindowsFastcall,
- Conv::ArmAapcs
- | Conv::CCmseNonSecureCall
- | Conv::Msp430Intr
+
+ // Should already get a back compat warning
+ Conv::X86Fastcall | Conv::X86Stdcall | Conv::X86ThisCall | Conv::X86VectorCall => {
+ default_call_conv
+ }
+
+ Conv::X86Intr => sess.fatal("x86-interrupt call conv not yet implemented"),
+
+ Conv::ArmAapcs => sess.fatal("aapcs call conv not yet implemented"),
+ Conv::CCmseNonSecureCall => {
+ sess.fatal("C-cmse-nonsecure-call call conv is not yet implemented");
+ }
+
+ Conv::Msp430Intr
| Conv::PtxKernel
- | Conv::X86Fastcall
- | Conv::X86Intr
- | Conv::X86Stdcall
- | Conv::X86ThisCall
- | Conv::X86VectorCall
| Conv::AmdGpuKernel
| Conv::AvrInterrupt
- | Conv::AvrNonBlockingInterrupt => todo!("{:?}", c),
+ | Conv::AvrNonBlockingInterrupt => {
+ unreachable!("tried to use {c:?} call conv which only exists on an unsupported target");
+ }
}
}
layout: TyAndLayout<'tcx>,
is_ssa: bool,
) -> CPlace<'tcx> {
+ if layout.is_unsized() {
+ fx.tcx.sess.span_fatal(
+ fx.mir.local_decls[local].source_info.span,
+ "unsized locals are not yet supported",
+ );
+ }
let place = if is_ssa {
if let rustc_target::abi::Abi::ScalarPair(_, _) = layout.abi {
CPlace::new_var_pair(fx, local, layout)
};
tcx.sess.time("codegen clif ir", || codegen_fn_body(&mut fx, start_block));
+ fx.bcx.seal_all_blocks();
+ fx.bcx.finalize();
// Recover all necessary data from fx, before accessing func will prevent future access to it.
let symbol_name = fx.symbol_name;
let source_info = bb_data.terminator().source_info;
fx.set_debug_loc(source_info);
+ let _print_guard =
+ crate::PrintOnPanic(|| format!("terminator {:?}", bb_data.terminator().kind));
+
match &bb_data.terminator().kind {
TerminatorKind::Goto { target } => {
if let TerminatorKind::Return = fx.mir[*target].terminator().kind {
*destination,
);
}
- TerminatorKind::Resume | TerminatorKind::Abort => {
+ TerminatorKind::Abort => {
+ codegen_panic_cannot_unwind(fx, source_info);
+ }
+ TerminatorKind::Resume => {
// FIXME implement unwinding
fx.bcx.ins().trap(TrapCode::UnreachableCodeReached);
}
}
};
}
-
- fx.bcx.seal_all_blocks();
- fx.bcx.finalize();
}
fn codegen_stmt<'tcx>(
codegen_panic_inner(fx, rustc_hir::LangItem::Panic, &args, source_info.span);
}
-pub(crate) fn codegen_panic_inner<'tcx>(
+pub(crate) fn codegen_panic_nounwind<'tcx>(
+ fx: &mut FunctionCx<'_, '_, 'tcx>,
+ msg_str: &str,
+ source_info: mir::SourceInfo,
+) {
+ let msg_ptr = fx.anonymous_str(msg_str);
+ let msg_len = fx.bcx.ins().iconst(fx.pointer_type, i64::try_from(msg_str.len()).unwrap());
+ let args = [msg_ptr, msg_len];
+
+ codegen_panic_inner(fx, rustc_hir::LangItem::PanicNounwind, &args, source_info.span);
+}
+
+pub(crate) fn codegen_panic_cannot_unwind<'tcx>(
+ fx: &mut FunctionCx<'_, '_, 'tcx>,
+ source_info: mir::SourceInfo,
+) {
+ let args = [];
+
+ codegen_panic_inner(fx, rustc_hir::LangItem::PanicCannotUnwind, &args, source_info.span);
+}
+
+fn codegen_panic_inner<'tcx>(
fx: &mut FunctionCx<'_, '_, 'tcx>,
lang_item: rustc_hir::LangItem,
args: &[Value],
fx.lib_call(
&*symbol_name,
- vec![
- AbiParam::new(fx.pointer_type),
- AbiParam::new(fx.pointer_type),
- AbiParam::new(fx.pointer_type),
- ],
+ args.iter().map(|&arg| AbiParam::new(fx.bcx.func.dfg.value_type(arg))).collect(),
vec![],
args,
);
},
Primitive::F32 => types::F32,
Primitive::F64 => types::F64,
- Primitive::Pointer => pointer_ty(tcx),
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ Primitive::Pointer(_) => pointer_ty(tcx),
}
}
}
}
+pub(crate) fn codegen_bitcast(fx: &mut FunctionCx<'_, '_, '_>, dst_ty: Type, val: Value) -> Value {
+ let mut flags = MemFlags::new();
+ flags.set_endianness(match fx.tcx.data_layout.endian {
+ rustc_target::abi::Endian::Big => cranelift_codegen::ir::Endianness::Big,
+ rustc_target::abi::Endian::Little => cranelift_codegen::ir::Endianness::Little,
+ });
+ fx.bcx.ins().bitcast(dst_ty, flags, val)
+}
+
pub(crate) fn type_zero_value(bcx: &mut FunctionBuilder<'_>, ty: Type) -> Value {
if ty == types::I128 {
let zero = bcx.ins().iconst(types::I64, 0);
--- /dev/null
+// Vendored from https://github.com/bytecodealliance/wasmtime/blob/b58a197d33f044193c3d608010f5e6ec394ac07e/cranelift/native/src/lib.rs
+// which is licensed as
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+// unlike rustc_codegen_cranelift itself. Also applies a small change to remove #![cfg_attr] that
+// rust's CI complains about and to fix formatting to match rustc.
+// FIXME revert back to the external crate with Cranelift 0.93
+#![allow(warnings)]
+
+//! Performs autodetection of the host for the purposes of running
+//! Cranelift to generate code to run on the same machine.
+
+#![deny(missing_docs, trivial_numeric_casts, unused_extern_crates, unstable_features)]
+#![warn(unused_import_braces)]
+
+use cranelift_codegen::isa;
+use target_lexicon::Triple;
+
+/// Return an `isa` builder configured for the current host
+/// machine, or `Err(())` if the host machine is not supported
+/// in the current configuration.
+pub fn builder() -> Result<isa::Builder, &'static str> {
+ builder_with_options(true)
+}
+
+/// Return an `isa` builder configured for the current host
+/// machine, or `Err(())` if the host machine is not supported
+/// in the current configuration.
+///
+/// Selects the given backend variant specifically; this is
+/// useful when more than oen backend exists for a given target
+/// (e.g., on x86-64).
+pub fn builder_with_options(infer_native_flags: bool) -> Result<isa::Builder, &'static str> {
+ let mut isa_builder = isa::lookup(Triple::host()).map_err(|err| match err {
+ isa::LookupError::SupportDisabled => "support for architecture disabled at compile time",
+ isa::LookupError::Unsupported => "unsupported architecture",
+ })?;
+
+ #[cfg(target_arch = "x86_64")]
+ {
+ use cranelift_codegen::settings::Configurable;
+
+ if !std::is_x86_feature_detected!("sse2") {
+ return Err("x86 support requires SSE2");
+ }
+
+ if !infer_native_flags {
+ return Ok(isa_builder);
+ }
+
+ // These are temporarily enabled by default (see #3810 for
+ // more) so that a default-constructed `Flags` can work with
+ // default Wasmtime features. Otherwise, the user must
+ // explicitly use native flags or turn these on when on x86-64
+ // platforms to avoid a configuration panic. In order for the
+ // "enable if detected" logic below to work, we must turn them
+ // *off* (differing from the default) and then re-enable below
+ // if present.
+ isa_builder.set("has_sse3", "false").unwrap();
+ isa_builder.set("has_ssse3", "false").unwrap();
+ isa_builder.set("has_sse41", "false").unwrap();
+ isa_builder.set("has_sse42", "false").unwrap();
+
+ if std::is_x86_feature_detected!("sse3") {
+ isa_builder.enable("has_sse3").unwrap();
+ }
+ if std::is_x86_feature_detected!("ssse3") {
+ isa_builder.enable("has_ssse3").unwrap();
+ }
+ if std::is_x86_feature_detected!("sse4.1") {
+ isa_builder.enable("has_sse41").unwrap();
+ }
+ if std::is_x86_feature_detected!("sse4.2") {
+ isa_builder.enable("has_sse42").unwrap();
+ }
+ if std::is_x86_feature_detected!("popcnt") {
+ isa_builder.enable("has_popcnt").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx") {
+ isa_builder.enable("has_avx").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx2") {
+ isa_builder.enable("has_avx2").unwrap();
+ }
+ if std::is_x86_feature_detected!("fma") {
+ isa_builder.enable("has_fma").unwrap();
+ }
+ if std::is_x86_feature_detected!("bmi1") {
+ isa_builder.enable("has_bmi1").unwrap();
+ }
+ if std::is_x86_feature_detected!("bmi2") {
+ isa_builder.enable("has_bmi2").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx512bitalg") {
+ isa_builder.enable("has_avx512bitalg").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx512dq") {
+ isa_builder.enable("has_avx512dq").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx512f") {
+ isa_builder.enable("has_avx512f").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx512vl") {
+ isa_builder.enable("has_avx512vl").unwrap();
+ }
+ if std::is_x86_feature_detected!("avx512vbmi") {
+ isa_builder.enable("has_avx512vbmi").unwrap();
+ }
+ if std::is_x86_feature_detected!("lzcnt") {
+ isa_builder.enable("has_lzcnt").unwrap();
+ }
+ }
+
+ #[cfg(target_arch = "aarch64")]
+ {
+ use cranelift_codegen::settings::Configurable;
+
+ if !infer_native_flags {
+ return Ok(isa_builder);
+ }
+
+ if std::arch::is_aarch64_feature_detected!("lse") {
+ isa_builder.enable("has_lse").unwrap();
+ }
+
+ if std::arch::is_aarch64_feature_detected!("paca") {
+ isa_builder.enable("has_pauth").unwrap();
+ }
+
+ if cfg!(target_os = "macos") {
+ // Pointer authentication is always available on Apple Silicon.
+ isa_builder.enable("sign_return_address").unwrap();
+ // macOS enforces the use of the B key for return addresses.
+ isa_builder.enable("sign_return_address_with_bkey").unwrap();
+ }
+ }
+
+ // There is no is_s390x_feature_detected macro yet, so for now
+ // we use getauxval from the libc crate directly.
+ #[cfg(all(target_arch = "s390x", target_os = "linux"))]
+ {
+ use cranelift_codegen::settings::Configurable;
+
+ if !infer_native_flags {
+ return Ok(isa_builder);
+ }
+
+ let v = unsafe { libc::getauxval(libc::AT_HWCAP) };
+ const HWCAP_S390X_VXRS_EXT2: libc::c_ulong = 32768;
+ if (v & HWCAP_S390X_VXRS_EXT2) != 0 {
+ isa_builder.enable("has_vxrs_ext2").unwrap();
+ // There is no separate HWCAP bit for mie2, so assume
+ // that any machine with vxrs_ext2 also has mie2.
+ isa_builder.enable("has_mie2").unwrap();
+ }
+ }
+
+ // `is_riscv_feature_detected` is nightly only for now, use
+ // getauxval from the libc crate directly as a temporary measure.
+ #[cfg(all(target_arch = "riscv64", target_os = "linux"))]
+ {
+ use cranelift_codegen::settings::Configurable;
+
+ if !infer_native_flags {
+ return Ok(isa_builder);
+ }
+
+ let v = unsafe { libc::getauxval(libc::AT_HWCAP) };
+
+ const HWCAP_RISCV_EXT_A: libc::c_ulong = 1 << (b'a' - b'a');
+ const HWCAP_RISCV_EXT_C: libc::c_ulong = 1 << (b'c' - b'a');
+ const HWCAP_RISCV_EXT_D: libc::c_ulong = 1 << (b'd' - b'a');
+ const HWCAP_RISCV_EXT_F: libc::c_ulong = 1 << (b'f' - b'a');
+ const HWCAP_RISCV_EXT_M: libc::c_ulong = 1 << (b'm' - b'a');
+ const HWCAP_RISCV_EXT_V: libc::c_ulong = 1 << (b'v' - b'a');
+
+ if (v & HWCAP_RISCV_EXT_A) != 0 {
+ isa_builder.enable("has_a").unwrap();
+ }
+
+ if (v & HWCAP_RISCV_EXT_C) != 0 {
+ isa_builder.enable("has_c").unwrap();
+ }
+
+ if (v & HWCAP_RISCV_EXT_D) != 0 {
+ isa_builder.enable("has_d").unwrap();
+ }
+
+ if (v & HWCAP_RISCV_EXT_F) != 0 {
+ isa_builder.enable("has_f").unwrap();
+
+ // TODO: There doesn't seem to be a bit associated with this extension
+ // rust enables it with the `f` extension:
+ // https://github.com/rust-lang/stdarch/blob/790411f93c4b5eada3c23abb4c9a063fb0b24d99/crates/std_detect/src/detect/os/linux/riscv.rs#L43
+ isa_builder.enable("has_zicsr").unwrap();
+ }
+
+ if (v & HWCAP_RISCV_EXT_M) != 0 {
+ isa_builder.enable("has_m").unwrap();
+ }
+
+ if (v & HWCAP_RISCV_EXT_V) != 0 {
+ isa_builder.enable("has_v").unwrap();
+ }
+
+ // TODO: ZiFencei does not have a bit associated with it
+ // TODO: Zbkb does not have a bit associated with it
+ }
+
+ // squelch warnings about unused mut/variables on some platforms.
+ drop(&mut isa_builder);
+ drop(infer_native_flags);
+
+ Ok(isa_builder)
+}
+
+#[cfg(test)]
+mod tests {
+ use super::builder;
+ use cranelift_codegen::isa::CallConv;
+ use cranelift_codegen::settings;
+
+ #[test]
+ fn test() {
+ if let Ok(isa_builder) = builder() {
+ let flag_builder = settings::builder();
+ let isa = isa_builder.finish(settings::Flags::new(flag_builder)).unwrap();
+
+ if cfg!(all(target_os = "macos", target_arch = "aarch64")) {
+ assert_eq!(isa.default_call_conv(), CallConv::AppleAarch64);
+ } else if cfg!(any(unix, target_os = "nebulet")) {
+ assert_eq!(isa.default_call_conv(), CallConv::SystemV);
+ } else if cfg!(windows) {
+ assert_eq!(isa.default_call_conv(), CallConv::WindowsFastcall);
+ }
+
+ if cfg!(target_pointer_width = "64") {
+ assert_eq!(isa.pointer_bits(), 64);
+ } else if cfg!(target_pointer_width = "32") {
+ assert_eq!(isa.pointer_bits(), 32);
+ } else if cfg!(target_pointer_width = "16") {
+ assert_eq!(isa.pointer_bits(), 16);
+ }
+ }
+ }
+}
+
+/// Version number of this crate.
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");
pub(crate) use emit::{DebugReloc, DebugRelocName};
pub(crate) use unwind::UnwindContext;
+pub(crate) fn producer() -> String {
+ format!(
+ "cg_clif (rustc {}, cranelift {})",
+ rustc_interface::util::rustc_version_str().unwrap_or("unknown version"),
+ cranelift_codegen::VERSION,
+ )
+}
+
pub(crate) struct DebugContext {
endian: RunTimeEndian,
let mut dwarf = DwarfUnit::new(encoding);
- let producer = format!(
- "cg_clif (rustc {}, cranelift {})",
- rustc_interface::util::rustc_version_str().unwrap_or("unknown version"),
- cranelift_codegen::VERSION,
- );
+ let producer = producer();
let comp_dir = tcx
.sess
.opts
self.concurrency_limiter.finished();
+ sess.abort_if_errors();
+
(
CodegenResults {
modules,
fn emit_module(
output_filenames: &OutputFilenames,
prof: &SelfProfilerRef,
- object: cranelift_object::object::write::Object<'_>,
+ mut object: cranelift_object::object::write::Object<'_>,
kind: ModuleKind,
name: String,
) -> Result<CompiledModule, String> {
+ if object.format() == cranelift_object::object::BinaryFormat::Elf {
+ let comment_section = object.add_section(
+ Vec::new(),
+ b".comment".to_vec(),
+ cranelift_object::object::SectionKind::OtherString,
+ );
+ let mut producer = vec![0];
+ producer.extend(crate::debuginfo::producer().as_bytes());
+ producer.push(0);
+ object.set_section_data(comment_section, producer, 1);
+ }
+
let tmp_file = output_filenames.temp_path(OutputType::Object, Some(&name));
let mut file = match File::create(&tmp_file) {
Ok(file) => file,
.collect::<Vec<_>>()
});
- tcx.sess.abort_if_errors();
-
let mut allocator_module = make_module(tcx.sess, &backend_config, "allocator_shim".to_string());
let mut allocator_unwind_context = UnwindContext::new(allocator_module.isa(), true);
let created_alloc_shim =
// cast float to int
let a_lane = match lane_ty {
- types::F32 => fx.bcx.ins().bitcast(types::I32, a_lane),
- types::F64 => fx.bcx.ins().bitcast(types::I64, a_lane),
+ types::F32 => codegen_bitcast(fx, types::I32, a_lane),
+ types::F64 => codegen_bitcast(fx, types::I64, a_lane),
_ => a_lane,
};
pub(crate) use cpuid::codegen_cpuid_call;
pub(crate) use llvm::codegen_llvm_intrinsic_call;
+use rustc_middle::ty::layout::HasParamEnv;
use rustc_middle::ty::print::with_no_trimmed_paths;
use rustc_middle::ty::subst::SubstsRef;
use rustc_span::symbol::{kw, sym, Symbol};
let mut res = fx.bcx.ins().bmask(int_ty, val);
if ty.is_float() {
- res = fx.bcx.ins().bitcast(ty, res);
+ res = codegen_bitcast(fx, ty, res);
}
res
substs,
args,
destination,
+ target,
source_info.span,
);
- let ret_block = fx.get_block(target);
- fx.bcx.ins().jump(ret_block, &[]);
} else if codegen_float_intrinsic_call(fx, intrinsic, args, destination) {
let ret_block = fx.get_block(target);
fx.bcx.ins().jump(ret_block, &[]);
let layout = fx.layout_of(substs.type_at(0));
if layout.abi.is_uninhabited() {
with_no_trimmed_paths!({
- crate::base::codegen_panic(
+ crate::base::codegen_panic_nounwind(
fx,
&format!("attempted to instantiate uninhabited type `{}`", layout.ty),
source_info,
return;
}
- if intrinsic == sym::assert_zero_valid && !fx.tcx.permits_zero_init(layout) {
+ if intrinsic == sym::assert_zero_valid
+ && !fx.tcx.permits_zero_init(fx.param_env().and(layout))
+ {
with_no_trimmed_paths!({
- crate::base::codegen_panic(
+ crate::base::codegen_panic_nounwind(
fx,
&format!(
"attempted to zero-initialize type `{}`, which is invalid",
}
if intrinsic == sym::assert_mem_uninitialized_valid
- && !fx.tcx.permits_uninit_init(layout)
+ && !fx.tcx.permits_uninit_init(fx.param_env().and(layout))
{
with_no_trimmed_paths!({
- crate::base::codegen_panic(
+ crate::base::codegen_panic_nounwind(
fx,
&format!(
"attempted to leave type `{}` uninitialized, which is invalid",
_substs: SubstsRef<'tcx>,
args: &[mir::Operand<'tcx>],
ret: CPlace<'tcx>,
+ target: BasicBlock,
span: Span,
) {
match intrinsic {
} else {
fx.tcx.sess.span_warn(span, "Index argument for `simd_extract` is not a constant");
let trap_block = fx.bcx.create_block();
- let dummy_block = fx.bcx.create_block();
let true_ = fx.bcx.ins().iconst(types::I8, 1);
fx.bcx.ins().brnz(true_, trap_block, &[]);
- fx.bcx.ins().jump(dummy_block, &[]);
+ let ret_block = fx.get_block(target);
+ fx.bcx.ins().jump(ret_block, &[]);
fx.bcx.switch_to_block(trap_block);
crate::trap::trap_unimplemented(
fx,
"Index argument for `simd_extract` is not a constant",
);
- fx.bcx.switch_to_block(dummy_block);
return;
};
});
}
- // simd_arith_offset
- // simd_scatter
- // simd_gather
+ sym::simd_expose_addr | sym::simd_from_exposed_addr | sym::simd_cast_ptr => {
+ intrinsic_args!(fx, args => (arg); intrinsic);
+ ret.write_cvalue_transmute(fx, arg);
+ }
+
+ sym::simd_arith_offset => {
+ intrinsic_args!(fx, args => (ptr, offset); intrinsic);
+
+ let (lane_count, ptr_lane_ty) = ptr.layout().ty.simd_size_and_type(fx.tcx);
+ let pointee_ty = ptr_lane_ty.builtin_deref(true).unwrap().ty;
+ let pointee_size = fx.layout_of(pointee_ty).size.bytes();
+ let (ret_lane_count, ret_lane_ty) = ret.layout().ty.simd_size_and_type(fx.tcx);
+ let ret_lane_layout = fx.layout_of(ret_lane_ty);
+ assert_eq!(lane_count, ret_lane_count);
+
+ for lane_idx in 0..lane_count {
+ let ptr_lane = ptr.value_lane(fx, lane_idx).load_scalar(fx);
+ let offset_lane = offset.value_lane(fx, lane_idx).load_scalar(fx);
+
+ let ptr_diff = if pointee_size != 1 {
+ fx.bcx.ins().imul_imm(offset_lane, pointee_size as i64)
+ } else {
+ offset_lane
+ };
+ let res_lane = fx.bcx.ins().iadd(ptr_lane, ptr_diff);
+ let res_lane = CValue::by_val(res_lane, ret_lane_layout);
+
+ ret.place_lane(fx, lane_idx).write_cvalue(fx, res_lane);
+ }
+ }
+
+ sym::simd_gather => {
+ intrinsic_args!(fx, args => (val, ptr, mask); intrinsic);
+
+ let (val_lane_count, val_lane_ty) = val.layout().ty.simd_size_and_type(fx.tcx);
+ let (ptr_lane_count, _ptr_lane_ty) = ptr.layout().ty.simd_size_and_type(fx.tcx);
+ let (mask_lane_count, _mask_lane_ty) = mask.layout().ty.simd_size_and_type(fx.tcx);
+ let (ret_lane_count, ret_lane_ty) = ret.layout().ty.simd_size_and_type(fx.tcx);
+ assert_eq!(val_lane_count, ptr_lane_count);
+ assert_eq!(val_lane_count, mask_lane_count);
+ assert_eq!(val_lane_count, ret_lane_count);
+
+ let lane_clif_ty = fx.clif_type(val_lane_ty).unwrap();
+ let ret_lane_layout = fx.layout_of(ret_lane_ty);
+
+ for lane_idx in 0..ptr_lane_count {
+ let val_lane = val.value_lane(fx, lane_idx).load_scalar(fx);
+ let ptr_lane = ptr.value_lane(fx, lane_idx).load_scalar(fx);
+ let mask_lane = mask.value_lane(fx, lane_idx).load_scalar(fx);
+
+ let if_enabled = fx.bcx.create_block();
+ let if_disabled = fx.bcx.create_block();
+ let next = fx.bcx.create_block();
+ let res_lane = fx.bcx.append_block_param(next, lane_clif_ty);
+
+ fx.bcx.ins().brnz(mask_lane, if_enabled, &[]);
+ fx.bcx.ins().jump(if_disabled, &[]);
+ fx.bcx.seal_block(if_enabled);
+ fx.bcx.seal_block(if_disabled);
+
+ fx.bcx.switch_to_block(if_enabled);
+ let res = fx.bcx.ins().load(lane_clif_ty, MemFlags::trusted(), ptr_lane, 0);
+ fx.bcx.ins().jump(next, &[res]);
+
+ fx.bcx.switch_to_block(if_disabled);
+ fx.bcx.ins().jump(next, &[val_lane]);
+
+ fx.bcx.seal_block(next);
+ fx.bcx.switch_to_block(next);
+
+ fx.bcx.ins().nop();
+
+ ret.place_lane(fx, lane_idx)
+ .write_cvalue(fx, CValue::by_val(res_lane, ret_lane_layout));
+ }
+ }
+
+ sym::simd_scatter => {
+ intrinsic_args!(fx, args => (val, ptr, mask); intrinsic);
+
+ let (val_lane_count, _val_lane_ty) = val.layout().ty.simd_size_and_type(fx.tcx);
+ let (ptr_lane_count, _ptr_lane_ty) = ptr.layout().ty.simd_size_and_type(fx.tcx);
+ let (mask_lane_count, _mask_lane_ty) = mask.layout().ty.simd_size_and_type(fx.tcx);
+ assert_eq!(val_lane_count, ptr_lane_count);
+ assert_eq!(val_lane_count, mask_lane_count);
+
+ for lane_idx in 0..ptr_lane_count {
+ let val_lane = val.value_lane(fx, lane_idx).load_scalar(fx);
+ let ptr_lane = ptr.value_lane(fx, lane_idx).load_scalar(fx);
+ let mask_lane = mask.value_lane(fx, lane_idx).load_scalar(fx);
+
+ let if_enabled = fx.bcx.create_block();
+ let next = fx.bcx.create_block();
+
+ fx.bcx.ins().brnz(mask_lane, if_enabled, &[]);
+ fx.bcx.ins().jump(next, &[]);
+ fx.bcx.seal_block(if_enabled);
+
+ fx.bcx.switch_to_block(if_enabled);
+ fx.bcx.ins().store(MemFlags::trusted(), val_lane, ptr_lane, 0);
+ fx.bcx.ins().jump(next, &[]);
+
+ fx.bcx.seal_block(next);
+ fx.bcx.switch_to_block(next);
+ }
+ }
+
_ => {
- fx.tcx.sess.span_fatal(span, &format!("Unknown SIMD intrinsic {}", intrinsic));
+ fx.tcx.sess.span_err(span, &format!("Unknown SIMD intrinsic {}", intrinsic));
+ // Prevent verifier error
+ fx.bcx.ins().trap(TrapCode::UnreachableCodeReached);
}
}
+ let ret_block = fx.get_block(target);
+ fx.bcx.ins().jump(ret_block, &[]);
}
mod concurrency_limiter;
mod config;
mod constant;
+// FIXME revert back to the external crate with Cranelift 0.93
+mod cranelift_native;
mod debuginfo;
mod discriminant;
mod driver;
}
}
- if target_triple.architecture == target_lexicon::Architecture::X86_64 {
+ if let target_lexicon::Architecture::Aarch64(_) | target_lexicon::Architecture::X86_64 =
+ target_triple.architecture
+ {
// Windows depends on stack probes to grow the committed part of the stack
flags_builder.enable("enable_probestack").unwrap();
flags_builder.set("probestack_strategy", "inline").unwrap();
} else {
- // __cranelift_probestack is not provided and inline stack probes are only supported on x86_64
+ // __cranelift_probestack is not provided and inline stack probes are only supported on AArch64 and x86_64
flags_builder.set("enable_probestack", "false").unwrap();
}
],
returns: vec![AbiParam::new(m.target_config().pointer_type() /*isize*/)],
call_conv: crate::conv_to_call_conv(
+ tcx.sess,
tcx.sess.target.options.entry_abi,
m.target_config().default_call_conv,
),
};
let entry_name = tcx.sess.target.options.entry_name.as_ref();
- let cmain_func_id = m.declare_function(entry_name, Linkage::Export, &cmain_sig).unwrap();
+ let cmain_func_id = match m.declare_function(entry_name, Linkage::Export, &cmain_sig) {
+ Ok(func_id) => func_id,
+ Err(err) => {
+ tcx.sess
+ .fatal(&format!("entry symbol `{entry_name}` declared multiple times: {err}"));
+ }
+ };
let instance = Instance::mono(tcx, rust_main_def_id).polymorphize(tcx);
bcx.seal_all_blocks();
bcx.finalize();
}
- m.define_function(cmain_func_id, &mut ctx).unwrap();
+
+ if let Err(err) = m.define_function(cmain_func_id, &mut ctx) {
+ tcx.sess.fatal(&format!("entry symbol `{entry_name}` defined multiple times: {err}"));
+ }
+
unwind_context.add_function(cmain_func_id, &ctx, m.isa());
}
}
/// otherwise return the given value and false.
pub(crate) fn maybe_unwrap_bool_not(bcx: &mut FunctionBuilder<'_>, arg: Value) -> (Value, bool) {
if let ValueDef::Result(arg_inst, 0) = bcx.func.dfg.value_def(arg) {
- match bcx.func.dfg[arg_inst] {
+ match bcx.func.dfg.insts[arg_inst] {
// This is the lowering of `Rvalue::Not`
InstructionData::IntCompareImm {
opcode: Opcode::IcmpImm,
return None;
};
- match bcx.func.dfg[arg_inst] {
+ match bcx.func.dfg.insts[arg_inst] {
InstructionData::UnaryImm { opcode: Opcode::Iconst, imm } => {
if test_zero {
Some(imm.bits() == 0)
(types::I32, types::F32)
| (types::F32, types::I32)
| (types::I64, types::F64)
- | (types::F64, types::I64) => fx.bcx.ins().bitcast(dst_ty, data),
- _ if src_ty.is_vector() && dst_ty.is_vector() => fx.bcx.ins().bitcast(dst_ty, data),
+ | (types::F64, types::I64) => codegen_bitcast(fx, dst_ty, data),
+ _ if src_ty.is_vector() && dst_ty.is_vector() => codegen_bitcast(fx, dst_ty, data),
_ if src_ty.is_vector() || dst_ty.is_vector() => {
// FIXME do something more efficient for transmutes between vectors and integers.
let stack_slot = fx.bcx.create_sized_stack_slot(StackSlotData {
# This block is ignored by rustc
set -e
echo "[BUILD] y.rs" 1>&2
-rustc $0 -o ${0/.rs/.bin} -Cdebuginfo=1 --edition 2021
+rustc $0 -o ${0/.rs/.bin} -Cdebuginfo=1 --edition 2021 -Cpanic=abort
exec ${0/.rs/.bin} $@
*/
bx.range_metadata(load, vr);
}
}
- abi::Pointer if vr.start < vr.end && !vr.contains(0) => {
+ abi::Pointer(_) if vr.start < vr.end && !vr.contains(0) => {
bx.nonnull_metadata(load);
}
_ => {}
let base_addr = self.const_bitcast(base_addr, self.usize_type);
let offset = self.context.new_rvalue_from_long(self.usize_type, offset.bytes() as i64);
let ptr = self.const_bitcast(base_addr + offset, ptr_type);
- if layout.primitive() != Pointer {
+ if !matches!(layout.primitive(), Pointer(_)) {
self.const_bitcast(ptr.dereference(None).to_rvalue(), ty)
}
else {
)
.expect("const_alloc_to_llvm: could not read relocation pointer")
as u64;
+
+ let address_space = cx.tcx.global_alloc(alloc_id).address_space(cx);
+
llvals.push(cx.scalar_to_backend(
InterpScalar::from_pointer(
interpret::Pointer::new(alloc_id, Size::from_bytes(ptr_offset)),
&cx.tcx,
),
- abi::Scalar::Initialized { value: Primitive::Pointer, valid_range: WrappingRange::full(dl.pointer_size) },
- cx.type_i8p(),
+ abi::Scalar::Initialized { value: Primitive::Pointer(address_space), valid_range: WrappingRange::full(dl.pointer_size) },
+ cx.type_i8p_ext(address_space),
));
next_offset = offset + pointer_size;
}
Int(i, false) => cx.type_from_unsigned_integer(i),
F32 => cx.type_f32(),
F64 => cx.type_f64(),
- Pointer => {
+ Pointer(address_space) => {
// If we know the alignment, pick something better than i8.
let pointee =
if let Some(pointee) = self.pointee_info_at(cx, offset) {
else {
cx.type_i8()
};
- cx.type_ptr_to(pointee)
+ cx.type_ptr_to_ext(pointee, address_space)
}
}
}
/// Helper function to get the LLVM type for a Scalar. Pointers are returned as
/// the equivalent integer type.
fn llvm_asm_scalar_type<'ll>(cx: &CodegenCx<'ll, '_>, scalar: Scalar) -> &'ll Type {
+ let dl = &cx.tcx.data_layout;
match scalar.primitive() {
Primitive::Int(Integer::I8, _) => cx.type_i8(),
Primitive::Int(Integer::I16, _) => cx.type_i16(),
Primitive::Int(Integer::I64, _) => cx.type_i64(),
Primitive::F32 => cx.type_f32(),
Primitive::F64 => cx.type_f64(),
- Primitive::Pointer => cx.type_isize(),
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ Primitive::Pointer(_) => cx.type_from_integer(dl.ptr_sized_integer()),
_ => unreachable!(),
}
}
reg: InlineAsmRegClass,
layout: &TyAndLayout<'tcx>,
) -> &'ll Value {
+ let dl = &bx.tcx.data_layout;
match (reg, layout.abi) {
(InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::vreg), Abi::Scalar(s)) => {
if let Primitive::Int(Integer::I8, _) = s.primitive() {
let elem_ty = llvm_asm_scalar_type(bx.cx, s);
let count = 16 / layout.size.bytes();
let vec_ty = bx.cx.type_vector(elem_ty, count);
- if let Primitive::Pointer = s.primitive() {
- value = bx.ptrtoint(value, bx.cx.type_isize());
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ if let Primitive::Pointer(_) = s.primitive() {
+ let t = bx.type_from_integer(dl.ptr_sized_integer());
+ value = bx.ptrtoint(value, t);
}
bx.insert_element(bx.const_undef(vec_ty), value, bx.const_i32(0))
}
}
(InlineAsmRegClass::AArch64(AArch64InlineAsmRegClass::vreg_low16), Abi::Scalar(s)) => {
value = bx.extract_element(value, bx.const_i32(0));
- if let Primitive::Pointer = s.primitive() {
+ if let Primitive::Pointer(_) = s.primitive() {
value = bx.inttoptr(value, layout.llvm_type(bx.cx));
}
value
bx.range_metadata(load, scalar.valid_range(bx));
}
}
- abi::Pointer => {
+ abi::Pointer(_) => {
if !scalar.valid_range(bx).contains(0) {
bx.nonnull_metadata(load);
}
Scalar::Int(int) => {
let data = int.assert_bits(layout.size(self));
let llval = self.const_uint_big(self.type_ix(bitsize), data);
- if layout.primitive() == Pointer {
+ if matches!(layout.primitive(), Pointer(_)) {
unsafe { llvm::LLVMConstIntToPtr(llval, llty) }
} else {
self.const_bitcast(llval, llty)
1,
)
};
- if layout.primitive() != Pointer {
+ if !matches!(layout.primitive(), Pointer(_)) {
unsafe { llvm::LLVMConstPtrToInt(llval, llty) }
} else {
self.const_bitcast(llval, llty)
use rustc_hir::def_id::DefId;
use rustc_middle::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs};
use rustc_middle::mir::interpret::{
- read_target_uint, Allocation, ConstAllocation, ErrorHandled, GlobalAlloc, InitChunk, Pointer,
+ read_target_uint, Allocation, ConstAllocation, ErrorHandled, InitChunk, Pointer,
Scalar as InterpScalar,
};
use rustc_middle::mir::mono::MonoItem;
use rustc_middle::ty::{self, Instance, Ty};
use rustc_middle::{bug, span_bug};
use rustc_session::config::Lto;
-use rustc_target::abi::{
- AddressSpace, Align, HasDataLayout, Primitive, Scalar, Size, WrappingRange,
-};
+use rustc_target::abi::{Align, HasDataLayout, Primitive, Scalar, Size, WrappingRange};
use std::ops::Range;
pub fn const_alloc_to_llvm<'ll>(cx: &CodegenCx<'ll, '_>, alloc: ConstAllocation<'_>) -> &'ll Value {
.expect("const_alloc_to_llvm: could not read relocation pointer")
as u64;
- let address_space = match cx.tcx.global_alloc(alloc_id) {
- GlobalAlloc::Function(..) => cx.data_layout().instruction_address_space,
- GlobalAlloc::Static(..) | GlobalAlloc::Memory(..) | GlobalAlloc::VTable(..) => {
- AddressSpace::DATA
- }
- };
+ let address_space = cx.tcx.global_alloc(alloc_id).address_space(cx);
llvals.push(cx.scalar_to_backend(
InterpScalar::from_pointer(
&cx.tcx,
),
Scalar::Initialized {
- value: Primitive::Pointer,
+ value: Primitive::Pointer(address_space),
valid_range: WrappingRange::full(dl.pointer_size),
},
cx.type_i8p_ext(address_space),
use crate::common::CodegenCx;
use crate::coverageinfo;
-use crate::errors::InstrumentCoverageRequiresLLVM12;
use crate::llvm;
use llvm::coverageinfo::CounterMappingRegion;
/// Generates and exports the Coverage Map.
///
-/// Rust Coverage Map generation supports LLVM Coverage Mapping Format versions
-/// 5 (LLVM 12, only) and 6 (zero-based encoded as 4 and 5, respectively), as defined at
+/// Rust Coverage Map generation supports LLVM Coverage Mapping Format version
+/// 6 (zero-based encoded as 5), as defined at
/// [LLVM Code Coverage Mapping Format](https://github.com/rust-lang/llvm-project/blob/rustc/13.0-2021-09-30/llvm/docs/CoverageMappingFormat.rst#llvm-code-coverage-mapping-format).
/// These versions are supported by the LLVM coverage tools (`llvm-profdata` and `llvm-cov`)
/// bundled with Rust's fork of LLVM.
pub fn finalize(cx: &CodegenCx<'_, '_>) {
let tcx = cx.tcx;
- // Ensure the installed version of LLVM supports at least Coverage Map
- // Version 5 (encoded as a zero-based value: 4), which was introduced with
- // LLVM 12.
+ // Ensure the installed version of LLVM supports Coverage Map Version 6
+ // (encoded as a zero-based value: 5), which was introduced with LLVM 13.
let version = coverageinfo::mapping_version();
- if version < 4 {
- tcx.sess.emit_fatal(InstrumentCoverageRequiresLLVM12);
- }
+ assert_eq!(version, 5, "The `CoverageMappingVersion` exposed by `llvm-wrapper` is out of sync");
debug!("Generating coverage map for CodegenUnit: `{}`", cx.codegen_unit.name());
return;
}
- let mut mapgen = CoverageMapGenerator::new(tcx, version);
+ let mut mapgen = CoverageMapGenerator::new(tcx);
// Encode coverage mappings and generate function records
let mut function_data = Vec::new();
}
impl CoverageMapGenerator {
- fn new(tcx: TyCtxt<'_>, version: u32) -> Self {
+ fn new(tcx: TyCtxt<'_>) -> Self {
let mut filenames = FxIndexSet::default();
- if version >= 5 {
- // LLVM Coverage Mapping Format version 6 (zero-based encoded as 5)
- // requires setting the first filename to the compilation directory.
- // Since rustc generates coverage maps with relative paths, the
- // compilation directory can be combined with the relative paths
- // to get absolute paths, if needed.
- let working_dir = tcx
- .sess
- .opts
- .working_dir
- .remapped_path_if_available()
- .to_string_lossy()
- .to_string();
- let c_filename =
- CString::new(working_dir).expect("null error converting filename to C string");
- filenames.insert(c_filename);
- }
+ // LLVM Coverage Mapping Format version 6 (zero-based encoded as 5)
+ // requires setting the first filename to the compilation directory.
+ // Since rustc generates coverage maps with relative paths, the
+ // compilation directory can be combined with the relative paths
+ // to get absolute paths, if needed.
+ let working_dir =
+ tcx.sess.opts.working_dir.remapped_path_if_available().to_string_lossy().to_string();
+ let c_filename =
+ CString::new(working_dir).expect("null error converting filename to C string");
+ filenames.insert(c_filename);
Self { filenames }
}
Primitive::Int(t, _) => t,
Primitive::F32 => Integer::I32,
Primitive::F64 => Integer::I64,
- Primitive::Pointer => {
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ Primitive::Pointer(_) => {
// If the niche is the NULL value of a reference, then `discr_enum_ty` will be
// a RawPtr. CodeView doesn't know what to do with enums whose base type is a
// pointer so we fix this up to just be `usize`.
pub error: String,
}
-#[derive(Diagnostic)]
-#[diag(codegen_llvm_instrument_coverage_requires_llvm_12)]
-pub(crate) struct InstrumentCoverageRequiresLLVM12;
-
#[derive(Diagnostic)]
#[diag(codegen_llvm_symbol_already_defined)]
pub(crate) struct SymbolAlreadyDefined<'a> {
emit_va_arg(self, args[0], ret_ty)
}
}
- Primitive::F64 | Primitive::Pointer => {
+ Primitive::F64 | Primitive::Pointer(_) => {
emit_va_arg(self, args[0], ret_ty)
}
// `va_arg` should never be used with the return type f32.
use rustc_middle::ty::layout::{FnAbiOf, LayoutOf, TyAndLayout};
use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths};
use rustc_middle::ty::{self, Ty, TypeVisitable};
-use rustc_target::abi::{Abi, AddressSpace, Align, FieldsShape};
+use rustc_target::abi::{Abi, Align, FieldsShape};
use rustc_target::abi::{Int, Pointer, F32, F64};
use rustc_target::abi::{PointeeInfo, Scalar, Size, TyAbiInterface, Variants};
use smallvec::{smallvec, SmallVec};
Int(i, _) => cx.type_from_integer(i),
F32 => cx.type_f32(),
F64 => cx.type_f64(),
- Pointer => {
+ Pointer(address_space) => {
// If we know the alignment, pick something better than i8.
- let (pointee, address_space) =
- if let Some(pointee) = self.pointee_info_at(cx, offset) {
- (cx.type_pointee_for_align(pointee.align), pointee.address_space)
- } else {
- (cx.type_i8(), AddressSpace::DATA)
- };
+ let pointee = if let Some(pointee) = self.pointee_info_at(cx, offset) {
+ cx.type_pointee_for_align(pointee.align)
+ } else {
+ cx.type_i8()
+ };
cx.type_ptr_to_ext(pointee, address_space)
}
}
cg_results: &CodegenResults,
executable_out_filename: &Path,
) {
- let dwp_out_filename = executable_out_filename.with_extension("dwp");
+ let mut dwp_out_filename = executable_out_filename.to_path_buf().into_os_string();
+ dwp_out_filename.push(".dwp");
debug!(?dwp_out_filename, ?executable_out_filename);
#[derive(Default)]
return (false, false);
}
- // If we're only producing artifacts that are archives, no need to preserve
- // the objects as they're losslessly contained inside the archives.
- if sess.crate_types().iter().all(|&x| x.is_archive()) {
- return (false, false);
- }
-
match (sess.split_debuginfo(), sess.opts.unstable_opts.split_dwarf_kind) {
// If there is no split debuginfo then do not preserve objects.
(SplitDebuginfo::Off, _) => (false, false),
let layout = bx.layout_of(ty);
let do_panic = match intrinsic {
Inhabited => layout.abi.is_uninhabited(),
- ZeroValid => !bx.tcx().permits_zero_init(layout),
- MemUninitializedValid => !bx.tcx().permits_uninit_init(layout),
+ ZeroValid => !bx.tcx().permits_zero_init(bx.param_env().and(layout)),
+ MemUninitializedValid => !bx.tcx().permits_uninit_init(bx.param_env().and(layout)),
};
Some(if do_panic {
let msg_str = with_no_visible_paths!({
match (src.layout.abi, dst.layout.abi) {
(abi::Abi::Scalar(src_scalar), abi::Abi::Scalar(dst_scalar)) => {
// HACK(eddyb) LLVM doesn't like `bitcast`s between pointers and non-pointers.
- let src_is_ptr = src_scalar.primitive() == abi::Pointer;
- let dst_is_ptr = dst_scalar.primitive() == abi::Pointer;
+ let src_is_ptr = matches!(src_scalar.primitive(), abi::Pointer(_));
+ let dst_is_ptr = matches!(dst_scalar.primitive(), abi::Pointer(_));
if src_is_ptr == dst_is_ptr {
assert_eq!(src.layout.size, dst.layout.size);
use rustc_middle::mir::tcx::PlaceTy;
use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout};
use rustc_middle::ty::{self, Ty};
-use rustc_target::abi::{Abi, Align, FieldsShape, Int, TagEncoding};
+use rustc_target::abi::{Abi, Align, FieldsShape, Int, Pointer, TagEncoding};
use rustc_target::abi::{VariantIdx, Variants};
#[derive(Copy, Clone, Debug)]
bx: &mut Bx,
cast_to: Ty<'tcx>,
) -> V {
+ let dl = &bx.tcx().data_layout;
let cast_to_layout = bx.cx().layout_of(cast_to);
let cast_to_size = cast_to_layout.layout.size();
let cast_to = bx.cx().immediate_backend_type(cast_to_layout);
TagEncoding::Niche { untagged_variant, ref niche_variants, niche_start } => {
// Cast to an integer so we don't have to treat a pointer as a
// special case.
- let (tag, tag_llty) = if tag_scalar.primitive().is_ptr() {
- let t = bx.type_isize();
- let tag = bx.ptrtoint(tag_imm, t);
- (tag, t)
- } else {
- (tag_imm, bx.cx().immediate_backend_type(tag_op.layout))
+ let (tag, tag_llty) = match tag_scalar.primitive() {
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ Pointer(_) => {
+ let t = bx.type_from_integer(dl.ptr_sized_integer());
+ let tag = bx.ptrtoint(tag_imm, t);
+ (tag, t)
+ }
+ _ => (tag_imm, bx.cx().immediate_backend_type(tag_op.layout)),
};
let tag_size = tag_scalar.size(bx.cx());
}
if intrinsic_name == sym::assert_zero_valid {
- let should_panic = !self.tcx.permits_zero_init(layout);
+ let should_panic = !self.tcx.permits_zero_init(self.param_env.and(layout));
if should_panic {
M::abort(
}
if intrinsic_name == sym::assert_mem_uninitialized_valid {
- let should_panic = !self.tcx.permits_uninit_init(layout);
+ let should_panic = !self.tcx.permits_uninit_init(self.param_env.and(layout));
if should_panic {
M::abort(
assert_eq!(size, mplace.layout.size, "abi::Scalar size does not match layout size");
let scalar = alloc.read_scalar(
alloc_range(Size::ZERO, size),
- /*read_provenance*/ s.is_ptr(),
+ /*read_provenance*/ matches!(s, abi::Pointer(_)),
)?;
Some(ImmTy { imm: scalar.into(), layout: mplace.layout })
}
assert!(b_offset.bytes() > 0); // in `operand_field` we use the offset to tell apart the fields
let a_val = alloc.read_scalar(
alloc_range(Size::ZERO, a_size),
- /*read_provenance*/ a.is_ptr(),
+ /*read_provenance*/ matches!(a, abi::Pointer(_)),
)?;
let b_val = alloc.read_scalar(
alloc_range(b_offset, b_size),
- /*read_provenance*/ b.is_ptr(),
+ /*read_provenance*/ matches!(b, abi::Pointer(_)),
)?;
Some(ImmTy { imm: Immediate::ScalarPair(a_val, b_val), layout: mplace.layout })
}
let (param_env, value) = param_env_and_value.into_parts();
const_eval::deref_mir_constant(tcx, param_env, value)
};
- providers.permits_uninit_init =
- |tcx, ty| util::might_permit_raw_init(tcx, ty, InitKind::UninitMitigated0x01Fill);
- providers.permits_zero_init = |tcx, ty| util::might_permit_raw_init(tcx, ty, InitKind::Zero);
+ providers.permits_uninit_init = |tcx, param_env_and_ty| {
+ let (param_env, ty) = param_env_and_ty.into_parts();
+ util::might_permit_raw_init(tcx, param_env, ty, InitKind::UninitMitigated0x01Fill)
+ };
+ providers.permits_zero_init = |tcx, param_env_and_ty| {
+ let (param_env, ty) = param_env_and_ty.into_parts();
+ util::might_permit_raw_init(tcx, param_env, ty, InitKind::Zero)
+ };
}
let ocx = ObligationCtxt::new(&infcx);
let predicates = tcx.predicates_of(callee).instantiate(tcx, substs);
- let hir_id = tcx
- .hir()
- .local_def_id_to_hir_id(self.body.source.def_id().expect_local());
let cause = ObligationCause::new(
terminator.source_info.span,
- hir_id,
+ self.body.source.def_id().expect_local(),
ObligationCauseCode::ItemObligation(callee),
);
let normalized_predicates = ocx.normalize(&cause, param_env, predicates);
ProjectionElem, RetagKind, RuntimePhase, Rvalue, SourceScope, Statement, StatementKind,
Terminator, TerminatorKind, UnOp, START_BLOCK,
};
-use rustc_middle::ty::{self, InstanceDef, ParamEnv, Ty, TyCtxt, TypeVisitable};
+use rustc_middle::ty::{self, InstanceDef, ParamEnv, Ty, TyCtxt};
use rustc_mir_dataflow::impls::MaybeStorageLive;
use rustc_mir_dataflow::storage::always_storage_live_locals;
use rustc_mir_dataflow::{Analysis, ResultsCursor};
// Equal types, all is good.
return true;
}
- // Normalization reveals opaque types, but we may be validating MIR while computing
- // said opaque types, causing cycles.
- if (src, dest).has_opaque_types() {
- return true;
- }
crate::util::is_subtype(self.tcx, self.param_env, src, dest)
}
/// to the full uninit check).
pub fn might_permit_raw_init<'tcx>(
tcx: TyCtxt<'tcx>,
+ param_env: ParamEnv<'tcx>,
ty: TyAndLayout<'tcx>,
kind: InitKind,
) -> bool {
if tcx.sess.opts.unstable_opts.strict_init_checks {
might_permit_raw_init_strict(ty, tcx, kind)
} else {
- let layout_cx = LayoutCx { tcx, param_env: ParamEnv::reveal_all() };
+ let layout_cx = LayoutCx { tcx, param_env };
might_permit_raw_init_lax(ty, &layout_cx, kind)
}
}
#[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
struct ObligationTreeId(usize);
-type ObligationTreeIdGenerator =
- std::iter::Map<std::ops::RangeFrom<usize>, fn(usize) -> ObligationTreeId>;
+type ObligationTreeIdGenerator = impl Iterator<Item = ObligationTreeId>;
pub struct ObligationForest<O: ForestObligation> {
/// The list of obligations. In between calls to [Self::process_obligations],
if let Some(ppm) = &sess.opts.pretty {
if ppm.needs_ast_map() {
- let expanded_crate = queries.expansion()?.borrow().0.clone();
queries.global_ctxt()?.enter(|tcx| {
- pretty::print_after_hir_lowering(tcx, &*expanded_crate, *ppm);
+ pretty::print_after_hir_lowering(tcx, *ppm);
Ok(())
})?;
} else {
}
}
- queries.global_ctxt()?;
+ let mut gctxt = queries.global_ctxt()?;
if callbacks.after_expansion(compiler, queries) == Compilation::Stop {
return early_exit();
}
+ // Make sure the `output_filenames` query is run for its side
+ // effects of writing the dep-info and reporting errors.
+ gctxt.enter(|tcx| tcx.output_filenames(()));
+
if sess.opts.output_types.contains_key(&OutputType::DepInfo)
&& sess.opts.output_types.len() == 1
{
return early_exit();
}
- queries.global_ctxt()?.enter(|tcx| {
+ gctxt.enter(|tcx| {
let result = tcx.analysis(());
if sess.opts.unstable_opts.save_analysis {
let crate_name = tcx.crate_name(LOCAL_CRATE);
result
})?;
+ drop(gctxt);
+
if callbacks.after_analysis(compiler, queries) == Compilation::Stop {
return early_exit();
}
write_or_print(&out, sess);
}
-pub fn print_after_hir_lowering<'tcx>(tcx: TyCtxt<'tcx>, krate: &ast::Crate, ppm: PpMode) {
+pub fn print_after_hir_lowering<'tcx>(tcx: TyCtxt<'tcx>, ppm: PpMode) {
if ppm.needs_analysis() {
abort_on_err(print_with_analysis(tcx, ppm), tcx.sess);
return;
let parse = &sess.parse_sess;
pprust::print_crate(
sess.source_map(),
- krate,
+ &tcx.resolver_for_lowering(()).borrow().1,
src_name,
src,
annotation.pp_ann(),
AstTree(PpAstTreeMode::Expanded) => {
debug!("pretty-printing expanded AST");
- format!("{krate:#?}")
+ format!("{:#?}", tcx.resolver_for_lowering(()).borrow().1)
}
Hir(s) => call_with_pp_support_hir(&s, tcx, move |annotation, hir_map| {
borrowck_opaque_type_non_generic_param =
expected generic {$kind} parameter, found `{$ty}`
- .label = this generic parameter must be used with a generic {$kind} parameter
+ .label = {STREQ($ty, "'static") ->
+ [true] cannot use static lifetime; use a bound lifetime instead or remove the lifetime parameter from the opaque type
+ *[other] this generic parameter must be used with a generic {$kind} parameter
+ }
codegen_llvm_error_creating_import_library =
Error creating import library for {$lib_name}: {$error}
-codegen_llvm_instrument_coverage_requires_llvm_12 =
- rustc option `-C instrument-coverage` requires LLVM 12 or higher.
-
codegen_llvm_symbol_already_defined =
symbol `{$symbol_name}` is already defined
}{$desc_kind ->
*[should_not_happen] [{$desc_kind}]
[restatic] the static lifetime
- [reempty] the empty lifetime
- [reemptyuni] the empty lifetime in universe {$desc_arg}
[revar] lifetime {$desc_arg}
[as_defined] the lifetime `{$desc_arg}` as defined here
.suggestion = borrow this binding in the pattern to avoid moving the value
mir_build_multiple_mut_borrows = cannot borrow value as mutable more than once at a time
- .label = first mutable borrow, by `{$name}`, occurs here
- .mutable_borrow = another mutable borrow, by `{$name_mut}`, occurs here
- .immutable_borrow = also borrowed as immutable, by `{$name_immut}`, here
- .moved = also moved into `{$name_moved}` here
+
+mir_build_already_borrowed = cannot borrow value as mutable because it is also borrowed as immutable
+
+mir_build_already_mut_borrowed = cannot borrow value as immutable because it is also borrowed as mutable
+
+mir_build_moved_while_borrowed = cannot move out of value because it is borrowed
+
+mir_build_mutable_borrow = value is mutably borrowed by `{$name}` here
+
+mir_build_borrow = value is borrowed by `{$name}` here
+
+mir_build_moved = value is moved into `{$name}` here
mir_build_union_pattern = cannot use unions in constant patterns
parse_invalid_expression_in_let_else = a `{$operator}` expression cannot be directly assigned in `let...else`
parse_invalid_curly_in_let_else = right curly brace `{"}"}` before `else` in a `let...else` statement not allowed
+parse_extra_if_in_let_else = remove the `if` if you meant to write a `let...else` statement
parse_compound_assignment_expression_in_let = can't reassign to an uninitialized variable
.suggestion = initialize the variable
[one] trait {$trait_list}, but this is
*[other] traits {$trait_list}, but these are
} intentionally ignored during dead code analysis
+
+passes_proc_macro_typeerror = mismatched {$kind} signature
+ .label = found {$found}, expected type `proc_macro::TokenStream`
+ .note = {$kind}s must have a signature of `{$expected_signature}`
+
+passes_proc_macro_diff_arg_count = mismatched {$kind} signature
+ .label = found unexpected {$count ->
+ [one] argument
+ *[other] arguments
+ }
+ .note = {$kind}s must have a signature of `{$expected_signature}`
+
+passes_proc_macro_missing_args = mismatched {$kind} signature
+ .label = {$kind} must have {$expected_input_count ->
+ [one] one argument
+ *[other] two arguments
+ } of type `proc_macro::TokenStream`
+
+passes_proc_macro_invalid_abi = proc macro functions may not be `extern "{$abi}"`
+
+passes_proc_macro_unsafe = proc macro functions may not be `unsafe`
trace!(?locale);
let mut bundle = new_bundle(vec![locale]);
+ // Add convenience functions available to ftl authors.
+ register_functions(&mut bundle);
+
// Fluent diagnostics can insert directionality isolation markers around interpolated variables
// indicating that there may be a shift from right-to-left to left-to-right text (or
// vice-versa). These are disabled because they are sometimes visible in the error output, but
Ok(Some(bundle))
}
+fn register_functions(bundle: &mut FluentBundle) {
+ bundle
+ .add_function("STREQ", |positional, _named| match positional {
+ [FluentValue::String(a), FluentValue::String(b)] => format!("{}", (a == b)).into(),
+ _ => FluentValue::Error,
+ })
+ .expect("Failed to add a function to the bundle.");
+}
+
/// Type alias for the result of `fallback_fluent_bundle` - a reference-counted pointer to a lazily
/// evaluated fluent bundle.
pub type LazyFallbackBundle = Lrc<Lazy<FluentBundle, impl FnOnce() -> FluentBundle>>;
) -> LazyFallbackBundle {
Lrc::new(Lazy::new(move || {
let mut fallback_bundle = new_bundle(vec![langid!("en-US")]);
+
+ register_functions(&mut fallback_bundle);
+
// See comment in `fluent_bundle`.
fallback_bundle.set_use_isolating(with_directionality_markers);
/// Otherwise, only `RUSTC_BOOTSTRAP=1` will work.
pub fn from_environment(krate: Option<&str>) -> Self {
// `true` if this is a feature-staged build, i.e., on the beta or stable channel.
- let disable_unstable_features = option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some();
+ let disable_unstable_features =
+ option_env!("CFG_DISABLE_UNSTABLE_FEATURES").map(|s| s != "0").unwrap_or(false);
// Returns whether `krate` should be counted as unstable
let is_unstable_crate = |var: &str| {
krate.map_or(false, |name| var.split(',').any(|new_krate| new_krate == name))
TryDesugar,
/// A desugared `<expr>.await`.
AwaitDesugar,
+ /// A desugared `format_args!()`.
+ FormatArgs,
}
impl MatchSource {
ForLoopDesugar => "for",
TryDesugar => "?",
AwaitDesugar => ".await",
+ FormatArgs => "format_args!()",
}
}
}
}
}
+ pub fn alias_ty(self) -> Option<&'hir Ty<'hir>> {
+ match self {
+ Node::Item(Item { kind: ItemKind::TyAlias(ty, ..), .. }) => Some(ty),
+ _ => None,
+ }
+ }
+
pub fn body_id(&self) -> Option<BodyId> {
match self {
Node::TraitItem(TraitItem {
/// libstd panic entry point. Necessary for const eval to be able to catch it
BeginPanic, sym::begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None;
+ // Lang items needed for `format_args!()`.
+ FormatAlignment, sym::format_alignment, format_alignment, Target::Enum, GenericRequirement::None;
+ FormatArgument, sym::format_argument, format_argument, Target::Struct, GenericRequirement::None;
+ FormatArguments, sym::format_arguments, format_arguments, Target::Struct, GenericRequirement::None;
+ FormatCount, sym::format_count, format_count, Target::Enum, GenericRequirement::None;
+ FormatPlaceholder, sym::format_placeholder, format_placeholder, Target::Struct, GenericRequirement::None;
+ FormatUnsafeArg, sym::format_unsafe_arg, format_unsafe_arg, Target::Struct, GenericRequirement::None;
+
ExchangeMalloc, sym::exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None;
BoxFree, sym::box_free, box_free_fn, Target::Fn, GenericRequirement::Minimum(1);
DropInPlace, sym::drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1);
use crate::traits::query::evaluate_obligation::InferCtxtExt;
use crate::traits::NormalizeExt;
use crate::traits::{self, TraitEngine, TraitEngineExt};
-use rustc_hir as hir;
use rustc_infer::infer::InferCtxt;
use rustc_middle::ty::TypeVisitable;
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_session::Limit;
+use rustc_span::def_id::LocalDefId;
use rustc_span::def_id::LOCAL_CRATE;
use rustc_span::Span;
// Meta infos:
infcx: &'a InferCtxt<'tcx>,
span: Span,
- body_id: hir::HirId,
+ body_id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
// Current state:
pub fn new(
infcx: &'a InferCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_def_id: LocalDefId,
span: Span,
base_ty: Ty<'tcx>,
) -> Autoderef<'a, 'tcx> {
Autoderef {
infcx,
span,
- body_id,
+ body_id: body_def_id,
param_env,
state: AutoderefSnapshot {
steps: vec![],
span: Span,
origin: &hir::OpaqueTyOrigin,
) {
- let hir_id = tcx.hir().local_def_id_to_hir_id(def_id);
let defining_use_anchor = match *origin {
hir::OpaqueTyOrigin::FnReturn(did) | hir::OpaqueTyOrigin::AsyncFn(did) => did,
hir::OpaqueTyOrigin::TyAlias => def_id,
_ => re,
});
- let misc_cause = traits::ObligationCause::misc(span, hir_id);
+ let misc_cause = traits::ObligationCause::misc(span, def_id);
match ocx.eq(&misc_cause, param_env, opaque_ty, hidden_ty) {
Ok(()) => {}
//
// FIXME(@lcnr): remove that after removing `cause.body_id` from
// obligations.
- let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m.def_id.expect_local());
+ let impl_m_def_id = impl_m.def_id.expect_local();
let cause = ObligationCause::new(
impl_m_span,
- impl_m_hir_id,
+ impl_m_def_id,
ObligationCauseCode::CompareImplItemObligation {
- impl_item_def_id: impl_m.def_id.expect_local(),
+ impl_item_def_id: impl_m_def_id,
trait_item_def_id: trait_m.def_id,
kind: impl_m.kind,
},
// Construct trait parameter environment and then shift it into the placeholder viewpoint.
// The key step here is to update the caller_bounds's predicates to be
// the new hybrid bounds we computed.
- let normalize_cause = traits::ObligationCause::misc(impl_m_span, impl_m_hir_id);
+ let normalize_cause = traits::ObligationCause::misc(impl_m_span, impl_m_def_id);
let param_env = ty::ParamEnv::new(
tcx.intern_predicates(&hybrid_preds.predicates),
Reveal::UserFacing,
let impl_m_own_bounds = impl_m_predicates.instantiate_own(tcx, impl_to_placeholder_substs);
for (predicate, span) in impl_m_own_bounds {
- let normalize_cause = traits::ObligationCause::misc(span, impl_m_hir_id);
+ let normalize_cause = traits::ObligationCause::misc(span, impl_m_def_id);
let predicate = ocx.normalize(&normalize_cause, param_env, predicate);
let cause = ObligationCause::new(
span,
- impl_m_hir_id,
+ impl_m_def_id,
ObligationCauseCode::CompareImplItemObligation {
- impl_item_def_id: impl_m.def_id.expect_local(),
+ impl_item_def_id: impl_m_def_id,
trait_item_def_id: trait_m.def_id,
kind: impl_m.kind,
},
);
let unnormalized_impl_fty = tcx.mk_fn_ptr(ty::Binder::dummy(unnormalized_impl_sig));
- let norm_cause = ObligationCause::misc(impl_m_span, impl_m_hir_id);
+ let norm_cause = ObligationCause::misc(impl_m_span, impl_m_def_id);
let impl_sig = ocx.normalize(&norm_cause, param_env, unnormalized_impl_sig);
debug!("compare_impl_method: impl_fty={:?}", impl_sig);
if !errors.is_empty() {
match check_implied_wf {
CheckImpliedWfMode::Check => {
+ let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m_def_id);
return compare_method_predicate_entailment(
tcx,
impl_m,
let outlives_env = OutlivesEnvironment::with_bounds(
param_env,
Some(infcx),
- infcx.implied_bounds_tys(param_env, impl_m_hir_id, wf_tys.clone()),
+ infcx.implied_bounds_tys(param_env, impl_m_def_id, wf_tys.clone()),
);
infcx.process_registered_region_obligations(
outlives_env.region_bound_pairs(),
if !errors.is_empty() {
// FIXME(compiler-errors): This can be simplified when IMPLIED_BOUNDS_ENTAILMENT
// becomes a hard error (i.e. ideally we'd just call `resolve_regions_and_report_errors`
+ let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m_def_id);
match check_implied_wf {
CheckImpliedWfMode::Check => {
return compare_method_predicate_entailment(
}
CheckImpliedWfMode::Skip => {
if infcx.tainted_by_errors().is_none() {
- infcx.err_ctxt().report_region_errors(impl_m.def_id.expect_local(), &errors);
+ infcx.err_ctxt().report_region_errors(impl_m_def_id, &errors);
}
return Err(tcx
.sess
let trait_to_impl_substs = impl_trait_ref.substs;
- let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m.def_id.expect_local());
+ let impl_m_def_id = impl_m.def_id.expect_local();
+ let impl_m_hir_id = tcx.hir().local_def_id_to_hir_id(impl_m_def_id);
let return_span = tcx.hir().fn_decl_by_hir_id(impl_m_hir_id).unwrap().output.span();
let cause = ObligationCause::new(
return_span,
- impl_m_hir_id,
+ impl_m_def_id,
ObligationCauseCode::CompareImplItemObligation {
- impl_item_def_id: impl_m.def_id.expect_local(),
+ impl_item_def_id: impl_m_def_id,
trait_item_def_id: trait_m.def_id,
kind: impl_m.kind,
},
let ocx = ObligationCtxt::new(infcx);
// Normalize the impl signature with fresh variables for lifetime inference.
- let norm_cause = ObligationCause::misc(return_span, impl_m_hir_id);
+ let norm_cause = ObligationCause::misc(return_span, impl_m_def_id);
let impl_sig = ocx.normalize(
&norm_cause,
param_env,
// the ImplTraitInTraitCollector, which gathers all of the RPITITs and replaces
// them with inference variables.
// We will use these inference variables to collect the hidden types of RPITITs.
- let mut collector = ImplTraitInTraitCollector::new(&ocx, return_span, param_env, impl_m_hir_id);
+ let mut collector = ImplTraitInTraitCollector::new(&ocx, return_span, param_env, impl_m_def_id);
let unnormalized_trait_sig = tcx
.liberate_late_bound_regions(
impl_m.def_id,
let outlives_environment = OutlivesEnvironment::with_bounds(
param_env,
Some(infcx),
- infcx.implied_bounds_tys(param_env, impl_m_hir_id, wf_tys),
+ infcx.implied_bounds_tys(param_env, impl_m_def_id, wf_tys),
);
- infcx.err_ctxt().check_region_obligations_and_report_errors(
- impl_m.def_id.expect_local(),
- &outlives_environment,
- )?;
+ infcx
+ .err_ctxt()
+ .check_region_obligations_and_report_errors(impl_m_def_id, &outlives_environment)?;
let mut collected_tys = FxHashMap::default();
for (def_id, (ty, substs)) in collector.types {
types: FxHashMap<DefId, (Ty<'tcx>, ty::SubstsRef<'tcx>)>,
span: Span,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
}
impl<'a, 'tcx> ImplTraitInTraitCollector<'a, 'tcx> {
ocx: &'a ObligationCtxt<'a, 'tcx>,
span: Span,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
) -> Self {
ImplTraitInTraitCollector { ocx, types: FxHashMap::default(), span, param_env, body_id }
}
// Create a parameter environment that represents the implementation's
// method.
- let impl_c_hir_id = tcx.hir().local_def_id_to_hir_id(impl_const_item_def);
-
// Compute placeholder form of impl and trait const tys.
let impl_ty = tcx.type_of(impl_const_item_def.to_def_id());
let trait_ty = tcx.bound_type_of(trait_const_item_def).subst(tcx, trait_to_impl_substs);
let mut cause = ObligationCause::new(
impl_c_span,
- impl_c_hir_id,
+ impl_const_item_def,
ObligationCauseCode::CompareImplItemObligation {
impl_item_def_id: impl_const_item_def,
trait_item_def_id: trait_const_item_def,
// This `HirId` should be used for the `body_id` field on each
// `ObligationCause` (and the `FnCtxt`). This is what
// `regionck_item` expects.
- let impl_ty_hir_id = tcx.hir().local_def_id_to_hir_id(impl_ty.def_id.expect_local());
+ let impl_ty_def_id = impl_ty.def_id.expect_local();
debug!("compare_type_predicate_entailment: trait_to_impl_substs={:?}", trait_to_impl_substs);
// The predicates declared by the impl definition, the trait and the
debug!("compare_type_predicate_entailment: bounds={:?}", hybrid_preds);
- let normalize_cause = traits::ObligationCause::misc(impl_ty_span, impl_ty_hir_id);
+ let normalize_cause = traits::ObligationCause::misc(impl_ty_span, impl_ty_def_id);
let param_env = ty::ParamEnv::new(
tcx.intern_predicates(&hybrid_preds.predicates),
Reveal::UserFacing,
debug!("compare_type_predicate_entailment: caller_bounds={:?}", param_env.caller_bounds());
for (predicate, span) in impl_ty_own_bounds {
- let cause = ObligationCause::misc(span, impl_ty_hir_id);
+ let cause = ObligationCause::misc(span, impl_ty_def_id);
let predicate = ocx.normalize(&cause, param_env, predicate);
let cause = ObligationCause::new(
span,
- impl_ty_hir_id,
+ impl_ty_def_id,
ObligationCauseCode::CompareImplItemObligation {
impl_item_def_id: impl_ty.def_id.expect_local(),
trait_item_def_id: trait_ty.def_id,
};
debug!(?normalize_param_env);
- let impl_ty_hir_id = tcx.hir().local_def_id_to_hir_id(impl_ty.def_id.expect_local());
+ let impl_ty_def_id = impl_ty.def_id.expect_local();
let impl_ty_substs = InternalSubsts::identity_for_item(tcx, impl_ty.def_id);
let rebased_substs = impl_ty_substs.rebase_onto(tcx, container_id, impl_trait_ref.substs);
let normalize_cause = ObligationCause::new(
impl_ty_span,
- impl_ty_hir_id,
+ impl_ty_def_id,
ObligationCauseCode::CheckAssociatedTypeBounds {
impl_item_def_id: impl_ty.def_id.expect_local(),
trait_item_def_id: trait_ty.def_id,
} else {
traits::BindingObligation(trait_ty.def_id, span)
};
- ObligationCause::new(impl_ty_span, impl_ty_hir_id, code)
+ ObligationCause::new(impl_ty_span, impl_ty_def_id, code)
};
let obligations = tcx
// Finally, resolve all regions. This catches wily misuses of
// lifetime parameters.
- let implied_bounds = infcx.implied_bounds_tys(param_env, impl_ty_hir_id, assumed_wf_types);
+ let implied_bounds = infcx.implied_bounds_tys(param_env, impl_ty_def_id, assumed_wf_types);
let outlives_environment =
OutlivesEnvironment::with_bounds(param_env, Some(&infcx), implied_bounds);
&& gen_count_ok(own_counts.consts, 0, "const")
{
let fty = tcx.mk_fn_ptr(sig);
- let cause = ObligationCause::new(it.span, it.hir_id(), ObligationCauseCode::IntrinsicType);
+ let it_def_id = it.owner_id.def_id;
+ let cause = ObligationCause::new(it.span, it_def_id, ObligationCauseCode::IntrinsicType);
require_same_types(tcx, &cause, tcx.mk_fn_ptr(tcx.fn_sig(it.owner_id)), fty);
}
}
pub(super) struct WfCheckingCtxt<'a, 'tcx> {
pub(super) ocx: ObligationCtxt<'a, 'tcx>,
span: Span,
- body_id: hir::HirId,
+ body_def_id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
}
impl<'a, 'tcx> Deref for WfCheckingCtxt<'a, 'tcx> {
T: TypeFoldable<'tcx>,
{
self.ocx.normalize(
- &ObligationCause::new(span, self.body_id, ObligationCauseCode::WellFormed(loc)),
+ &ObligationCause::new(span, self.body_def_id, ObligationCauseCode::WellFormed(loc)),
self.param_env,
value,
)
loc: Option<WellFormedLoc>,
arg: ty::GenericArg<'tcx>,
) {
- let cause =
- traits::ObligationCause::new(span, self.body_id, ObligationCauseCode::WellFormed(loc));
+ let cause = traits::ObligationCause::new(
+ span,
+ self.body_def_id,
+ ObligationCauseCode::WellFormed(loc),
+ );
// for a type to be WF, we do not need to check if const trait predicates satisfy.
let param_env = self.param_env.without_const();
self.ocx.register_obligation(traits::Obligation::new(
F: for<'a> FnOnce(&WfCheckingCtxt<'a, 'tcx>),
{
let param_env = tcx.param_env(body_def_id);
- let body_id = tcx.hir().local_def_id_to_hir_id(body_def_id);
let infcx = &tcx.infer_ctxt().build();
let ocx = ObligationCtxt::new(infcx);
- let mut wfcx = WfCheckingCtxt { ocx, span, body_id, param_env };
+ let mut wfcx = WfCheckingCtxt { ocx, span, body_def_id, param_env };
if !tcx.features().trivial_bounds {
wfcx.check_false_global_bounds()
f(&mut wfcx);
let assumed_wf_types = wfcx.ocx.assumed_wf_types(param_env, span, body_def_id);
- let implied_bounds = infcx.implied_bounds_tys(param_env, body_id, assumed_wf_types);
+ let implied_bounds = infcx.implied_bounds_tys(param_env, body_def_id, assumed_wf_types);
let errors = wfcx.select_all_or_error();
if !errors.is_empty() {
continue;
}
- let item_hir_id = item.id.hir_id();
let param_env = tcx.param_env(item_def_id);
let item_required_bounds = match item.kind {
gather_gat_bounds(
tcx,
param_env,
- item_hir_id,
+ item_def_id.def_id,
sig.inputs_and_output,
// We also assume that all of the function signature's parameter types
// are well formed.
gather_gat_bounds(
tcx,
param_env,
- item_hir_id,
+ item_def_id.def_id,
tcx.explicit_item_bounds(item_def_id).to_vec(),
&FxIndexSet::default(),
gat_def_id.def_id,
let gat_item_hir = tcx.hir().expect_trait_item(gat_def_id.def_id);
debug!(?required_bounds);
let param_env = tcx.param_env(gat_def_id);
- let gat_hir = gat_item_hir.hir_id();
let mut unsatisfied_bounds: Vec<_> = required_bounds
.into_iter()
ty::PredicateKind::Clause(ty::Clause::RegionOutlives(ty::OutlivesPredicate(
a,
b,
- ))) => {
- !region_known_to_outlive(tcx, gat_hir, param_env, &FxIndexSet::default(), a, b)
- }
+ ))) => !region_known_to_outlive(
+ tcx,
+ gat_def_id.def_id,
+ param_env,
+ &FxIndexSet::default(),
+ a,
+ b,
+ ),
ty::PredicateKind::Clause(ty::Clause::TypeOutlives(ty::OutlivesPredicate(
a,
b,
- ))) => !ty_known_to_outlive(tcx, gat_hir, param_env, &FxIndexSet::default(), a, b),
+ ))) => !ty_known_to_outlive(
+ tcx,
+ gat_def_id.def_id,
+ param_env,
+ &FxIndexSet::default(),
+ a,
+ b,
+ ),
_ => bug!("Unexpected PredicateKind"),
})
.map(|clause| clause.to_string())
fn gather_gat_bounds<'tcx, T: TypeFoldable<'tcx>>(
tcx: TyCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- item_hir: hir::HirId,
+ item_def_id: LocalDefId,
to_check: T,
wf_tys: &FxIndexSet<Ty<'tcx>>,
gat_def_id: LocalDefId,
// reflected in a where clause on the GAT itself.
for (ty, ty_idx) in &types {
// In our example, requires that `Self: 'a`
- if ty_known_to_outlive(tcx, item_hir, param_env, &wf_tys, *ty, *region_a) {
+ if ty_known_to_outlive(tcx, item_def_id, param_env, &wf_tys, *ty, *region_a) {
debug!(?ty_idx, ?region_a_idx);
debug!("required clause: {ty} must outlive {region_a}");
// Translate into the generic parameters of the GAT. In
if ty::ReStatic == **region_b || region_a == region_b {
continue;
}
- if region_known_to_outlive(tcx, item_hir, param_env, &wf_tys, *region_a, *region_b) {
+ if region_known_to_outlive(tcx, item_def_id, param_env, &wf_tys, *region_a, *region_b) {
debug!(?region_a_idx, ?region_b_idx);
debug!("required clause: {region_a} must outlive {region_b}");
// Translate into the generic parameters of the GAT.
/// `ty` outlives `region`.
fn ty_known_to_outlive<'tcx>(
tcx: TyCtxt<'tcx>,
- id: hir::HirId,
+ id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
wf_tys: &FxIndexSet<Ty<'tcx>>,
ty: Ty<'tcx>,
/// `region_a` outlives `region_b`
fn region_known_to_outlive<'tcx>(
tcx: TyCtxt<'tcx>,
- id: hir::HirId,
+ id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
wf_tys: &FxIndexSet<Ty<'tcx>>,
region_a: ty::Region<'tcx>,
/// to be tested), then resolve region and return errors
fn resolve_regions_with_wf_tys<'tcx>(
tcx: TyCtxt<'tcx>,
- id: hir::HirId,
+ id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
wf_tys: &FxIndexSet<Ty<'tcx>>,
add_constraints: impl for<'a> FnOnce(&'a InferCtxt<'tcx>, &'a RegionBoundPairs<'tcx>),
wfcx.register_bound(
traits::ObligationCause::new(
hir_ty.span,
- wfcx.body_id,
+ wfcx.body_def_id,
traits::FieldSized {
adt_kind: match item_adt_kind(&item.kind) {
Some(i) => i,
if let ty::VariantDiscr::Explicit(discr_def_id) = variant.discr {
let cause = traits::ObligationCause::new(
tcx.def_span(discr_def_id),
- wfcx.body_id,
+ wfcx.body_def_id,
traits::MiscObligation,
);
wfcx.register_obligation(traits::Obligation::new(
traits::wf::predicate_obligations(
wfcx.infcx,
wfcx.param_env,
- wfcx.body_id,
+ wfcx.body_def_id,
normalized_bound,
bound_span,
)
wfcx.register_wf_obligation(ty_span, Some(WellFormedLoc::Ty(item_id)), item_ty.into());
if forbid_unsized {
wfcx.register_bound(
- traits::ObligationCause::new(ty_span, wfcx.body_id, traits::WellFormed(None)),
+ traits::ObligationCause::new(ty_span, wfcx.body_def_id, traits::WellFormed(None)),
wfcx.param_env,
item_ty,
tcx.require_lang_item(LangItem::Sized, None),
if should_check_for_sync {
wfcx.register_bound(
- traits::ObligationCause::new(ty_span, wfcx.body_id, traits::SharedStatic),
+ traits::ObligationCause::new(ty_span, wfcx.body_def_id, traits::SharedStatic),
wfcx.param_env,
item_ty,
tcx.require_lang_item(LangItem::Sync, Some(ty_span)),
let mut obligations = traits::wf::trait_obligations(
wfcx.infcx,
wfcx.param_env,
- wfcx.body_id,
+ wfcx.body_def_id,
&trait_pred,
ast_trait_ref.path.span,
item,
let pred = wfcx.normalize(sp, None, pred);
let cause = traits::ObligationCause::new(
sp,
- wfcx.body_id,
+ wfcx.body_def_id,
traits::ItemObligation(def_id.to_def_id()),
);
traits::Obligation::new(tcx, cause, wfcx.param_env, pred)
traits::wf::predicate_obligations(
infcx,
wfcx.param_env.without_const(),
- wfcx.body_id,
+ wfcx.body_def_id,
p,
sp,
)
});
-
let obligations: Vec<_> = wf_obligations.chain(default_obligations).collect();
wfcx.register_obligations(obligations);
}
// Check that the argument is a tuple
if let Some(ty) = inputs.next() {
wfcx.register_bound(
- ObligationCause::new(span, wfcx.body_id, ObligationCauseCode::RustCall),
+ ObligationCause::new(span, wfcx.body_def_id, ObligationCauseCode::RustCall),
wfcx.param_env,
*ty,
tcx.require_lang_item(hir::LangItem::Tuple, Some(span)),
traits::wf::predicate_obligations(
wfcx.infcx,
wfcx.param_env,
- wfcx.body_id,
+ wfcx.body_def_id,
normalized_bound,
bound_span,
)
let infcx = wfcx.infcx;
let tcx = wfcx.tcx();
let cause =
- ObligationCause::new(span, wfcx.body_id, traits::ObligationCauseCode::MethodReceiver);
+ ObligationCause::new(span, wfcx.body_def_id, traits::ObligationCauseCode::MethodReceiver);
let can_eq_self = |ty| infcx.can_eq(wfcx.param_env, self_ty, ty).is_ok();
return true;
}
- let mut autoderef = Autoderef::new(infcx, wfcx.param_env, wfcx.body_id, span, receiver_ty);
+ let mut autoderef = Autoderef::new(infcx, wfcx.param_env, wfcx.body_def_id, span, receiver_ty);
// The `arbitrary_self_types` feature allows raw pointer receivers like `self: *const Self`.
if arbitrary_self_types_enabled {
let mut span = self.span;
let empty_env = ty::ParamEnv::empty();
- let def_id = tcx.hir().local_def_id(self.body_id);
- let predicates_with_span = tcx.predicates_of(def_id).predicates.iter().copied();
+ let predicates_with_span = tcx.predicates_of(self.body_def_id).predicates.iter().copied();
// Check elaborated bounds.
let implied_obligations = traits::elaborate_predicates_with_span(tcx, predicates_with_span);
// Match the existing behavior.
if pred.is_global() && !pred.has_late_bound_vars() {
let pred = self.normalize(span, None, pred);
- let hir_node = tcx.hir().find(self.body_id);
+ let hir_node = tcx.hir().find_by_def_id(self.body_def_id);
// only use the span of the predicate clause (#90869)
let obligation = traits::Obligation::new(
tcx,
- traits::ObligationCause::new(span, self.body_id, traits::TrivialBound),
+ traits::ObligationCause::new(span, self.body_def_id, traits::TrivialBound),
empty_env,
pred,
);
fn visit_implementation_of_copy(tcx: TyCtxt<'_>, impl_did: LocalDefId) {
debug!("visit_implementation_of_copy: impl_did={:?}", impl_did);
- let impl_hir_id = tcx.hir().local_def_id_to_hir_id(impl_did);
-
let self_type = tcx.type_of(impl_did);
debug!("visit_implementation_of_copy: self_type={:?} (bound)", self_type);
_ => bug!("expected Copy impl item"),
};
- let cause = traits::ObligationCause::misc(span, impl_hir_id);
+ let cause = traits::ObligationCause::misc(span, impl_did);
match type_allowed_to_implement_copy(tcx, param_env, self_type, cause) {
Ok(()) => {}
Err(CopyImplementationError::InfrigingFields(fields)) => {
let create_err = |msg: &str| struct_span_err!(tcx.sess, span, E0378, "{}", msg);
let infcx = tcx.infer_ctxt().build();
- let cause = ObligationCause::misc(span, impl_hir_id);
+ let cause = ObligationCause::misc(span, impl_did);
use rustc_type_ir::sty::TyKind::*;
match (source.kind(), target.kind()) {
debug!("visit_implementation_of_coerce_unsized: {:?} -> {:?} (free)", source, target);
let infcx = tcx.infer_ctxt().build();
- let impl_hir_id = tcx.hir().local_def_id_to_hir_id(impl_did);
- let cause = ObligationCause::misc(span, impl_hir_id);
+ let cause = ObligationCause::misc(span, impl_did);
let check_mutbl = |mt_a: ty::TypeAndMut<'tcx>,
mt_b: ty::TypeAndMut<'tcx>,
mk_ptr: &dyn Fn(Ty<'tcx>) -> Ty<'tcx>| {
};
// Register an obligation for `A: Trait<B>`.
- let cause = traits::ObligationCause::misc(span, impl_hir_id);
+ let cause = traits::ObligationCause::misc(span, impl_did);
let predicate =
predicate_for_trait_def(tcx, param_env, cause, trait_def_id, 0, [source, target]);
let errors = traits::fully_solve_obligation(&infcx, predicate);
}
}
+// FIXME(vincenzopalazzo): remove the hir item when the refactoring is stable
fn suggest_impl_trait<'tcx>(
tcx: TyCtxt<'tcx>,
ret_ty: Ty<'tcx>,
span: Span,
- hir_id: hir::HirId,
+ _hir_id: hir::HirId,
def_id: LocalDefId,
) -> Option<String> {
let format_as_assoc: fn(_, _, _, _, _) -> _ =
}
let ocx = ObligationCtxt::new_in_snapshot(&infcx);
let item_ty = ocx.normalize(
- &ObligationCause::misc(span, hir_id),
+ &ObligationCause::misc(span, def_id),
param_env,
tcx.mk_projection(assoc_item_def_id, substs),
);
use crate::collect::ItemCtxt;
use rustc_hir as hir;
use rustc_hir::intravisit::{self, Visitor};
-use rustc_hir::{ForeignItem, ForeignItemKind, HirId};
+use rustc_hir::{ForeignItem, ForeignItemKind};
use rustc_infer::infer::TyCtxtInferExt;
use rustc_infer::traits::{ObligationCause, WellFormedLoc};
use rustc_middle::ty::query::Providers;
use rustc_middle::ty::{self, Region, TyCtxt, TypeFoldable, TypeFolder};
+use rustc_span::def_id::LocalDefId;
use rustc_trait_selection::traits;
pub fn provide(providers: &mut Providers) {
cause: Option<ObligationCause<'tcx>>,
cause_depth: usize,
icx: ItemCtxt<'tcx>,
- hir_id: HirId,
+ def_id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
depth: usize,
}
let tcx_ty = self.icx.to_ty(ty).fold_with(&mut EraseAllBoundRegions { tcx: self.tcx });
let cause = traits::ObligationCause::new(
ty.span,
- self.hir_id,
+ self.def_id,
traits::ObligationCauseCode::WellFormed(None),
);
let errors = traits::fully_solve_obligation(
cause: None,
cause_depth: 0,
icx,
- hir_id,
+ def_id,
param_env: tcx.param_env(def_id.to_def_id()),
depth: 0,
};
let infcx = &tcx.infer_ctxt().build();
let ocx = ObligationCtxt::new(infcx);
let param_env = tcx.param_env(impl1_def_id);
- let impl1_hir_id = tcx.hir().local_def_id_to_hir_id(impl1_def_id);
let assumed_wf_types =
ocx.assumed_wf_types(param_env, tcx.def_span(impl1_def_id), impl1_def_id);
return None;
}
- let implied_bounds = infcx.implied_bounds_tys(param_env, impl1_hir_id, assumed_wf_types);
+ let implied_bounds = infcx.implied_bounds_tys(param_env, impl1_def_id, assumed_wf_types);
let outlives_env = OutlivesEnvironment::with_bounds(param_env, Some(infcx), implied_bounds);
let _ =
infcx.err_ctxt().check_region_obligations_and_report_errors(impl1_def_id, &outlives_env);
// Include the well-formed predicates of the type parameters of the impl.
for arg in tcx.impl_trait_ref(impl1_def_id).unwrap().subst_identity().substs {
let infcx = &tcx.infer_ctxt().build();
- let obligations = wf::obligations(
- infcx,
- tcx.param_env(impl1_def_id),
- tcx.hir().local_def_id_to_hir_id(impl1_def_id),
- 0,
- arg,
- span,
- )
- .unwrap();
+ let obligations =
+ wf::obligations(infcx, tcx.param_env(impl1_def_id), impl1_def_id, 0, arg, span)
+ .unwrap();
assert!(!obligations.needs_infer());
impl2_predicates.extend(
use rustc_errors::{struct_span_err, ErrorGuaranteed};
use rustc_hir as hir;
-use rustc_hir::def_id::DefId;
-use rustc_hir::{Node, CRATE_HIR_ID};
+use rustc_hir::Node;
use rustc_infer::infer::{InferOk, TyCtxtInferExt};
use rustc_middle::middle;
use rustc_middle::ty::query::Providers;
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_middle::util;
use rustc_session::{config::EntryFnType, parse::feature_err};
+use rustc_span::def_id::{DefId, LocalDefId, CRATE_DEF_ID};
use rustc_span::{symbol::sym, Span, DUMMY_SP};
use rustc_target::spec::abi::Abi;
use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt as _;
let main_fnsig = tcx.fn_sig(main_def_id);
let main_span = tcx.def_span(main_def_id);
- fn main_fn_diagnostics_hir_id(tcx: TyCtxt<'_>, def_id: DefId, sp: Span) -> hir::HirId {
+ fn main_fn_diagnostics_def_id(tcx: TyCtxt<'_>, def_id: DefId, sp: Span) -> LocalDefId {
if let Some(local_def_id) = def_id.as_local() {
- let hir_id = tcx.hir().local_def_id_to_hir_id(local_def_id);
let hir_type = tcx.type_of(local_def_id);
if !matches!(hir_type.kind(), ty::FnDef(..)) {
span_bug!(sp, "main has a non-function type: found `{}`", hir_type);
}
- hir_id
+ local_def_id
} else {
- CRATE_HIR_ID
+ CRATE_DEF_ID
}
}
}
let mut error = false;
- let main_diagnostics_hir_id = main_fn_diagnostics_hir_id(tcx, main_def_id, main_span);
+ let main_diagnostics_def_id = main_fn_diagnostics_def_id(tcx, main_def_id, main_span);
let main_fn_generics = tcx.generics_of(main_def_id);
let main_fn_predicates = tcx.predicates_of(main_def_id);
if main_fn_generics.count() != 0 || !main_fnsig.bound_vars().is_empty() {
let param_env = ty::ParamEnv::empty();
let cause = traits::ObligationCause::new(
return_ty_span,
- main_diagnostics_hir_id,
+ main_diagnostics_def_id,
ObligationCauseCode::MainFunctionType,
);
let ocx = traits::ObligationCtxt::new(&infcx);
tcx,
&ObligationCause::new(
main_span,
- main_diagnostics_hir_id,
+ main_diagnostics_def_id,
ObligationCauseCode::MainFunctionType,
),
se_ty,
require_same_types(
tcx,
- &ObligationCause::new(start_span, start_id, ObligationCauseCode::StartFunctionType),
+ &ObligationCause::new(
+ start_span,
+ start_def_id,
+ ObligationCauseCode::StartFunctionType,
+ ),
se_ty,
tcx.mk_fn_ptr(tcx.fn_sig(start_def_id)),
);
prior_arm: Option<(Option<hir::HirId>, Ty<'tcx>, Span)>,
) {
let hir = self.tcx.hir();
-
// First, check that we're actually in the tail of a function.
- let hir::Node::Expr(hir::Expr { kind: hir::ExprKind::Block(block, _), .. }) =
- hir.get(self.body_id) else { return; };
+ let Some(body_id) = hir.maybe_body_owned_by(self.body_id) else { return; };
+ let body = hir.body(body_id);
+ let hir::ExprKind::Block(block, _) = body.value.kind else { return; };
let Some(hir::Stmt { kind: hir::StmtKind::Semi(last_expr), .. })
= block.innermost_block().stmts.last() else { return; };
if last_expr.hir_id != expr.hir_id {
// Next, make sure that we have no type expectation.
let Some(ret) = hir
- .find_by_def_id(self.body_id.owner.def_id)
+ .find_by_def_id(self.body_id)
.and_then(|owner| owner.fn_decl())
.map(|decl| decl.output.span()) else { return; };
let Expectation::IsLast(stmt) = expectation else {
let ret_ty =
fcx.register_infer_ok_obligations(fcx.infcx.replace_opaque_types_with_inference_vars(
declared_ret_ty,
- body.value.hir_id,
+ fn_def_id,
decl.output.span(),
fcx.param_env,
));
use hir::def::DefKind;
use rustc_hir as hir;
-use rustc_hir::def_id::LocalDefId;
use rustc_hir::lang_items::LangItem;
use rustc_hir_analysis::astconv::AstConv;
use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
use rustc_middle::ty::subst::InternalSubsts;
use rustc_middle::ty::visit::TypeVisitable;
use rustc_middle::ty::{self, Ty, TypeSuperVisitable, TypeVisitor};
+use rustc_span::def_id::LocalDefId;
use rustc_span::source_map::Span;
use rustc_target::spec::abi::Abi;
use rustc_trait_selection::traits;
debug!(?bound_sig, ?liberated_sig);
- let mut fcx = FnCtxt::new(self, self.param_env.without_const(), body.value.hir_id);
+ let mut fcx = FnCtxt::new(self, self.param_env.without_const(), closure.def_id);
let generator_types = check_fn(
&mut fcx,
liberated_sig,
// function.
Some(hir::GeneratorKind::Async(hir::AsyncGeneratorKind::Fn)) => {
debug!("closure is async fn body");
- self.deduce_future_output_from_obligations(expr_def_id, body.id().hir_id)
- .unwrap_or_else(|| {
+ let def_id = self.tcx.hir().body_owner_def_id(body.id());
+ self.deduce_future_output_from_obligations(expr_def_id, def_id).unwrap_or_else(
+ || {
// AFAIK, deducing the future output
// always succeeds *except* in error cases
// like #65159. I'd like to return Error
// *have* reported an
// error. --nikomatsakis
astconv.ty_infer(None, decl.output.span())
- })
+ },
+ )
}
_ => astconv.ty_infer(None, decl.output.span()),
fn deduce_future_output_from_obligations(
&self,
expr_def_id: LocalDefId,
- body_id: hir::HirId,
+ body_def_id: LocalDefId,
) -> Option<Ty<'tcx>> {
let ret_coercion = self.ret_coercion.as_ref().unwrap_or_else(|| {
span_bug!(self.tcx.def_span(expr_def_id), "async fn generator outside of a fn")
let InferOk { value: output_ty, obligations } = self
.replace_opaque_types_with_inference_vars(
output_ty,
- body_id,
+ body_def_id,
self.tcx.def_span(expr_def_id),
self.param_env,
);
if visitor.ret_exprs.len() > 0 && let Some(expr) = expression {
self.note_unreachable_loop_return(&mut err, &expr, &visitor.ret_exprs);
}
+
let reported = err.emit_unless(unsized_return);
self.final_ty = Some(fcx.tcx.ty_error_with_guaranteed(reported));
}
}
}
+
fn note_unreachable_loop_return(
&self,
err: &mut Diagnostic,
|| self.suggest_copied_or_cloned(err, expr, expr_ty, expected)
|| self.suggest_clone_for_ref(err, expr, expr_ty, expected)
|| self.suggest_into(err, expr, expr_ty, expected)
- || self.suggest_floating_point_literal(err, expr, expected);
+ || self.suggest_floating_point_literal(err, expr, expected)
+ || self.note_result_coercion(err, expr, expected, expr_ty);
if !suggested {
- self.point_at_expr_source_of_inferred_type(err, expr, expr_ty, expected);
+ self.point_at_expr_source_of_inferred_type(err, expr, expr_ty, expected, expr.span);
}
}
self.annotate_expected_due_to_let_ty(err, expr, error);
self.emit_type_mismatch_suggestions(err, expr, expr_ty, expected, expected_ty_expr, error);
self.note_type_is_not_clone(err, expected, expr_ty, expr);
- self.note_need_for_fn_pointer(err, expected, expr_ty);
self.note_internal_mutation_in_method(err, expr, expected, expr_ty);
self.check_for_range_as_method_call(err, expr, expr_ty, expected);
self.check_for_binding_assigned_block_without_tail_expression(err, expr, expr_ty, expected);
expr: &hir::Expr<'_>,
found: Ty<'tcx>,
expected: Ty<'tcx>,
+ mismatch_span: Span,
) -> bool {
let map = self.tcx.hir();
lt_op: |_| self.tcx.lifetimes.re_erased,
ct_op: |c| c,
ty_op: |t| match *t.kind() {
- ty::Infer(ty::TyVar(vid)) => self.tcx.mk_ty_infer(ty::TyVar(self.root_var(vid))),
+ ty::Infer(ty::TyVar(_)) => self.tcx.mk_ty_var(ty::TyVid::from_u32(0)),
ty::Infer(ty::IntVar(_)) => {
self.tcx.mk_ty_infer(ty::IntVar(ty::IntVid { index: 0 }))
}
},
};
let mut prev = eraser.fold_ty(ty);
- let mut prev_span = None;
+ let mut prev_span: Option<Span> = None;
for binding in expr_finder.uses {
// In every expression where the binding is referenced, we will look at that
// inferred in this method call.
let arg = &args[i];
let arg_ty = self.node_ty(arg.hir_id);
- err.span_label(
- arg.span,
- &format!(
- "this is of type `{arg_ty}`, which causes `{ident}` to be \
- inferred as `{ty}`",
- ),
- );
+ if !arg.span.overlaps(mismatch_span) {
+ err.span_label(
+ arg.span,
+ &format!(
+ "this is of type `{arg_ty}`, which causes `{ident}` to be \
+ inferred as `{ty}`",
+ ),
+ );
+ }
param_args.insert(param_ty, (arg, arg_ty));
}
}
&& self.can_eq(self.param_env, ty, found).is_ok()
{
// We only point at the first place where the found type was inferred.
+ if !segment.ident.span.overlaps(mismatch_span) {
err.span_label(
segment.ident.span,
with_forced_trimmed_paths!(format!(
"here the type of `{ident}` is inferred to be `{ty}`",
)),
- );
+ );}
break;
} else if !param_args.is_empty() {
break;
// We use the *previous* span because if the type is known *here* it means
// it was *evaluated earlier*. We don't do this for method calls because we
// evaluate the method's self type eagerly, but not in any other case.
- err.span_label(
- span,
- with_forced_trimmed_paths!(format!(
- "here the type of `{ident}` is inferred to be `{ty}`",
- )),
- );
+ if !span.overlaps(mismatch_span) {
+ err.span_label(
+ span,
+ with_forced_trimmed_paths!(format!(
+ "here the type of `{ident}` is inferred to be `{ty}`",
+ )),
+ );
+ }
break;
}
prev = ty;
);
}
+ pub(crate) fn note_result_coercion(
+ &self,
+ err: &mut Diagnostic,
+ expr: &hir::Expr<'tcx>,
+ expected: Ty<'tcx>,
+ found: Ty<'tcx>,
+ ) -> bool {
+ let ty::Adt(e, substs_e) = expected.kind() else { return false; };
+ let ty::Adt(f, substs_f) = found.kind() else { return false; };
+ if e.did() != f.did() {
+ return false;
+ }
+ if Some(e.did()) != self.tcx.get_diagnostic_item(sym::Result) {
+ return false;
+ }
+ let map = self.tcx.hir();
+ if let Some(hir::Node::Expr(expr)) = map.find_parent(expr.hir_id)
+ && let hir::ExprKind::Ret(_) = expr.kind
+ {
+ // `return foo;`
+ } else if map.get_return_block(expr.hir_id).is_some() {
+ // Function's tail expression.
+ } else {
+ return false;
+ }
+ let e = substs_e.type_at(1);
+ let f = substs_f.type_at(1);
+ if self
+ .infcx
+ .type_implements_trait(
+ self.tcx.get_diagnostic_item(sym::Into).unwrap(),
+ [f, e],
+ self.param_env,
+ )
+ .must_apply_modulo_regions()
+ {
+ err.multipart_suggestion(
+ "use `?` to coerce and return an appropriate `Err`, and wrap the resulting value \
+ in `Ok` so the expression remains of type `Result`",
+ vec![
+ (expr.span.shrink_to_lo(), "Ok(".to_string()),
+ (expr.span.shrink_to_hi(), "?)".to_string()),
+ ],
+ Applicability::MaybeIncorrect,
+ );
+ return true;
+ }
+ false
+ }
+
/// If the expected type is an enum (Issue #55250) with any variants whose
/// sole field is of the found type, suggest such variants. (Issue #42764)
fn suggest_compatible_variants(
// Point any obligations that were registered due to opaque type
// inference at the return expression.
self.select_obligations_where_possible(|errors| {
- self.point_at_return_for_opaque_ty_error(errors, span, return_expr_ty);
+ self.point_at_return_for_opaque_ty_error(errors, span, return_expr_ty, return_expr.span);
});
}
}
errors: &mut Vec<traits::FulfillmentError<'tcx>>,
span: Span,
return_expr_ty: Ty<'tcx>,
+ return_span: Span,
) {
// Don't point at the whole block if it's empty
- if span == self.tcx.hir().span(self.body_id) {
+ if span == return_span {
return;
}
for err in errors {
let body = self.tcx.hir().body(anon_const.body);
// Create a new function context.
- let fcx = FnCtxt::new(self, self.param_env.with_const(), body.value.hir_id);
+ let def_id = anon_const.def_id;
+ let fcx = FnCtxt::new(self, self.param_env.with_const(), def_id);
crate::GatherLocalsVisitor::new(&fcx).visit_body(body);
let ty = fcx.check_expr_with_expectation(&body.value, expected);
variant: &'tcx ty::VariantDef,
access_span: Span,
) -> Vec<Symbol> {
+ let body_owner_hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id);
variant
.fields
.iter()
.filter(|field| {
let def_scope = self
.tcx
- .adjust_ident_and_get_scope(field.ident(self.tcx), variant.def_id, self.body_id)
+ .adjust_ident_and_get_scope(
+ field.ident(self.tcx),
+ variant.def_id,
+ body_owner_hir_id,
+ )
.1;
field.vis.is_accessible_from(def_scope, self.tcx)
&& !matches!(
match deref_base_ty.kind() {
ty::Adt(base_def, substs) if !base_def.is_enum() => {
debug!("struct named {:?}", deref_base_ty);
+ let body_hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id);
let (ident, def_scope) =
- self.tcx.adjust_ident_and_get_scope(field, base_def.did(), self.body_id);
+ self.tcx.adjust_ident_and_get_scope(field, base_def.did(), body_hir_id);
let fields = &base_def.non_enum_variant().fields;
if let Some(index) = fields
.iter()
}
fn point_at_param_definition(&self, err: &mut Diagnostic, param: ty::ParamTy) {
- let generics = self.tcx.generics_of(self.body_id.owner.to_def_id());
+ let generics = self.tcx.generics_of(self.body_id);
let generic_param = generics.type_param(¶m, self.tcx);
if let ty::GenericParamDefKind::Type { synthetic: true, .. } = generic_param.kind {
return;
}
}
- pub(in super::super) fn note_need_for_fn_pointer(
- &self,
- err: &mut Diagnostic,
- expected: Ty<'tcx>,
- found: Ty<'tcx>,
- ) {
- let (sig, did, substs) = match (&expected.kind(), &found.kind()) {
- (ty::FnDef(did1, substs1), ty::FnDef(did2, substs2)) => {
- let sig1 = self.tcx.bound_fn_sig(*did1).subst(self.tcx, substs1);
- let sig2 = self.tcx.bound_fn_sig(*did2).subst(self.tcx, substs2);
- if sig1 != sig2 {
- return;
- }
- err.note(
- "different `fn` items always have unique types, even if their signatures are \
- the same",
- );
- (sig1, *did1, substs1)
- }
- (ty::FnDef(did, substs), ty::FnPtr(sig2)) => {
- let sig1 = self.tcx.bound_fn_sig(*did).subst(self.tcx, substs);
- if sig1 != *sig2 {
- return;
- }
- (sig1, *did, substs)
- }
- _ => return,
- };
- err.help(&format!("change the expected type to be function pointer `{}`", sig));
- err.help(&format!(
- "if the expected type is due to type inference, cast the expected `fn` to a function \
- pointer: `{} as {}`",
- self.tcx.def_path_str_with_substs(did, substs),
- sig
- ));
- }
-
// Instantiates the given path, which must refer to an item with the given
// number of type parameters and type.
#[instrument(skip(self, span), level = "debug")]
kind: TypeVariableOriginKind::MiscVariable,
span: full_call_span,
});
- self.point_at_expr_source_of_inferred_type(&mut err, rcvr, expected, callee_ty);
+ self.point_at_expr_source_of_inferred_type(
+ &mut err,
+ rcvr,
+ expected,
+ callee_ty,
+ provided_arg_span,
+ );
}
// Call out where the function is defined
self.label_fn_like(
match *callee_ty.kind() {
ty::Param(param) => {
let param =
- self.tcx.generics_of(self.body_id.owner).type_param(¶m, self.tcx);
+ self.tcx.generics_of(self.body_id).type_param(¶m, self.tcx);
if param.kind.is_synthetic() {
// if it's `impl Fn() -> ..` then just fall down to the def-id based logic
def_id = param.def_id;
// and point at that.
let instantiated = self
.tcx
- .explicit_predicates_of(self.body_id.owner)
+ .explicit_predicates_of(self.body_id)
.instantiate_identity(self.tcx);
// FIXME(compiler-errors): This could be problematic if something has two
// fn-like predicates with different args, but callable types really never
use crate::coercion::DynamicCoerceMany;
use crate::{Diverges, EnclosingBreakables, Inherited};
use rustc_hir as hir;
-use rustc_hir::def_id::DefId;
+use rustc_hir::def_id::{DefId, LocalDefId};
use rustc_hir_analysis::astconv::AstConv;
use rustc_infer::infer;
use rustc_infer::infer::error_reporting::TypeErrCtxt;
/// [`ItemCtxt`]: rustc_hir_analysis::collect::ItemCtxt
/// [`InferCtxt`]: infer::InferCtxt
pub struct FnCtxt<'a, 'tcx> {
- pub(super) body_id: hir::HirId,
+ pub(super) body_id: LocalDefId,
/// The parameter environment used for proving trait obligations
/// in this function. This can change when we descend into
pub fn new(
inh: &'a Inherited<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
) -> FnCtxt<'a, 'tcx> {
FnCtxt {
body_id,
}
fn item_def_id(&self) -> DefId {
- self.body_id.owner.to_def_id()
+ self.body_id.to_def_id()
}
fn get_type_parameter_bounds(
self.typeck_results
.borrow()
.liberated_fn_sigs()
- .get(self.tcx.hir().parent_id(self.body_id))
+ .get(self.tcx.hir().local_def_id_to_hir_id(self.body_id))
.copied()
}
&self,
ty: Ty<'tcx>,
) -> Option<(DefIdOrName, Ty<'tcx>, Vec<Ty<'tcx>>)> {
- self.err_ctxt().extract_callable_info(self.body_id, self.param_env, ty)
+ let body_hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id);
+ self.err_ctxt().extract_callable_info(body_hir_id, self.param_env, ty)
}
pub fn suggest_two_fn_call(
impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
pub fn check_transmute(&self, from: Ty<'tcx>, to: Ty<'tcx>, hir_id: HirId) {
let tcx = self.tcx;
+ let dl = &tcx.data_layout;
let span = tcx.hir().span(hir_id);
let normalize = |ty| {
let ty = self.resolve_vars_if_possible(ty);
// Special-case transmuting from `typeof(function)` and
// `Option<typeof(function)>` to present a clearer error.
let from = unpack_option_like(tcx, from);
- if let (&ty::FnDef(..), SizeSkeleton::Known(size_to)) = (from.kind(), sk_to) && size_to == Pointer.size(&tcx) {
+ if let (&ty::FnDef(..), SizeSkeleton::Known(size_to)) = (from.kind(), sk_to) && size_to == Pointer(dl.instruction_address_space).size(&tcx) {
struct_span_err!(tcx.sess, span, E0591, "can't transmute zero-sized type")
.note(&format!("source type: {from}"))
.note(&format!("target type: {to}"))
let typeck_results = Inherited::build(tcx, def_id).enter(|inh| {
let param_env = tcx.param_env(def_id);
- let mut fcx = FnCtxt::new(&inh, param_env, body.value.hir_id);
+ let mut fcx = FnCtxt::new(&inh, param_env, def_id);
if let Some(hir::FnSig { header, decl, .. }) = fn_sig {
let fn_sig = if rustc_hir_analysis::collect::get_infer_ret_ty(&decl.output).is_some() {
let (ref infcx, goal, inference_vars) = tcx.infer_ctxt().build_with_canonical(DUMMY_SP, &goal);
let ParamEnvAnd { param_env, value: self_ty } = goal;
- let mut autoderef = Autoderef::new(infcx, param_env, hir::CRATE_HIR_ID, DUMMY_SP, self_ty)
- .include_raw_pointers()
- .silence_errors();
+ let mut autoderef =
+ Autoderef::new(infcx, param_env, hir::def_id::CRATE_DEF_ID, DUMMY_SP, self_ty)
+ .include_raw_pointers()
+ .silence_errors();
let mut reached_raw_pointer = false;
let mut steps: Vec<_> = autoderef
.by_ref()
fn push_candidate(&mut self, candidate: Candidate<'tcx>, is_inherent: bool) {
let is_accessible = if let Some(name) = self.method_name {
let item = candidate.item;
- let def_scope = self
- .tcx
- .adjust_ident_and_get_scope(name, item.container_id(self.tcx), self.body_id)
- .1;
+ let hir_id = self.tcx.hir().local_def_id_to_hir_id(self.body_id);
+ let def_scope =
+ self.tcx.adjust_ident_and_get_scope(name, item.container_id(self.tcx), hir_id).1;
item.visibility(self.tcx).is_accessible_from(def_scope, self.tcx)
} else {
true
let ty_span = match rcvr_ty.kind() {
ty::Param(param_type) => {
- Some(param_type.span_from_generics(self.tcx, self.body_id.owner.to_def_id()))
+ Some(param_type.span_from_generics(self.tcx, self.body_id.to_def_id()))
}
ty::Adt(def, _) if def.did().is_local() => Some(tcx.def_span(def.did())),
_ => None,
args,
sugg_span,
);
-
self.note_candidates_on_method_error(
rcvr_ty,
item_name,
ty::Param(_) => {
// Account for `fn` items like in `issue-35677.rs` to
// suggest restricting its type params.
- let parent_body =
- hir.body_owner(hir::BodyId { hir_id: self.body_id });
- Some(hir.get(parent_body))
+ Some(hir.get_by_def_id(self.body_id))
}
ty::Adt(def, _) => {
def.did().as_local().map(|def_id| hir.get_by_def_id(def_id))
_ => None,
});
if let Some((field, field_ty)) = field_receiver {
- let scope = tcx.parent_module(self.body_id);
+ let scope = tcx.parent_module_from_def_id(self.body_id);
let is_accessible = field.vis.is_accessible_from(scope, tcx);
if is_accessible {
else { return };
let map = self.infcx.tcx.hir();
- let body = map.body(rustc_hir::BodyId { hir_id: self.body_id });
+ let body_id = self.tcx.hir().body_owned_by(self.body_id);
+ let body = map.body(body_id);
struct LetVisitor<'a> {
result: Option<&'a hir::Expr<'a>>,
ident_name: Symbol,
true
});
- let module_did = self.tcx.parent_module(self.body_id);
+ let module_did = self.tcx.parent_module_from_def_id(self.body_id);
let (module, _, _) = self.tcx.hir().get_module(module_did);
let span = module.spans.inject_use_span;
};
// Obtain the span for `param` and use it for a structured suggestion.
if let Some(param) = param_type {
- let generics = self.tcx.generics_of(self.body_id.owner.to_def_id());
+ let generics = self.tcx.generics_of(self.body_id.to_def_id());
let type_param = generics.type_param(param, self.tcx);
let hir = self.tcx.hir();
if let Some(def_id) = type_param.def_id.as_local() {
use std::{cmp, fmt, iter};
mod note;
+mod note_and_explain;
mod suggest;
pub(crate) mod need_type_info;
self.suggest_as_ref_where_appropriate(span, &exp_found, diag);
self.suggest_accessing_field_where_appropriate(cause, &exp_found, diag);
self.suggest_await_on_expect_found(cause, span, &exp_found, diag);
+ self.suggest_function_pointers(cause, span, &exp_found, diag);
}
}
- // In some (most?) cases cause.body_id points to actual body, but in some cases
- // it's an actual definition. According to the comments (e.g. in
- // rustc_hir_analysis/check/compare_impl_item.rs:compare_predicate_entailment) the latter
- // is relied upon by some other code. This might (or might not) need cleanup.
- let body_owner_def_id =
- self.tcx.hir().opt_local_def_id(cause.body_id).unwrap_or_else(|| {
- self.tcx.hir().body_owner_def_id(hir::BodyId { hir_id: cause.body_id })
- });
self.check_and_note_conflicting_crates(diag, terr);
- self.tcx.note_and_explain_type_err(diag, terr, cause, span, body_owner_def_id.to_def_id());
+
+ self.note_and_explain_type_err(diag, terr, cause, span, cause.body_id.to_def_id());
if let Some(ValuePairs::PolyTraitRefs(exp_found)) = values
&& let ty::Closure(def_id, _) = exp_found.expected.skip_binder().self_ty().kind()
/// with the other type. A TyVar inference type is compatible with any type, and an IntVar or
/// FloatVar inference type are compatible with themselves or their concrete types (Int and
/// Float types, respectively). When comparing two ADTs, these rules apply recursively.
- pub fn same_type_modulo_infer(&self, a: Ty<'tcx>, b: Ty<'tcx>) -> bool {
+ pub fn same_type_modulo_infer<T: relate::Relate<'tcx>>(&self, a: T, b: T) -> bool {
let (a, b) = self.resolve_vars_if_possible((a, b));
SameTypeModuloInfer(self).relate(a, b).is_ok()
}
--- /dev/null
+use super::TypeErrCtxt;
+use rustc_errors::Applicability::{MachineApplicable, MaybeIncorrect};
+use rustc_errors::{pluralize, Diagnostic, MultiSpan};
+use rustc_hir::{self as hir, def::DefKind};
+use rustc_middle::traits::ObligationCauseCode;
+use rustc_middle::ty::error::ExpectedFound;
+use rustc_middle::ty::print::Printer;
+use rustc_middle::{
+ traits::ObligationCause,
+ ty::{self, error::TypeError, print::FmtPrinter, suggest_constraining_type_param, Ty},
+};
+use rustc_span::{def_id::DefId, sym, BytePos, Span, Symbol};
+
+impl<'tcx> TypeErrCtxt<'_, 'tcx> {
+ pub fn note_and_explain_type_err(
+ &self,
+ diag: &mut Diagnostic,
+ err: TypeError<'tcx>,
+ cause: &ObligationCause<'tcx>,
+ sp: Span,
+ body_owner_def_id: DefId,
+ ) {
+ use ty::error::TypeError::*;
+ debug!("note_and_explain_type_err err={:?} cause={:?}", err, cause);
+
+ let tcx = self.tcx;
+
+ match err {
+ ArgumentSorts(values, _) | Sorts(values) => {
+ match (values.expected.kind(), values.found.kind()) {
+ (ty::Closure(..), ty::Closure(..)) => {
+ diag.note("no two closures, even if identical, have the same type");
+ diag.help("consider boxing your closure and/or using it as a trait object");
+ }
+ (ty::Alias(ty::Opaque, ..), ty::Alias(ty::Opaque, ..)) => {
+ // Issue #63167
+ diag.note("distinct uses of `impl Trait` result in different opaque types");
+ }
+ (ty::Float(_), ty::Infer(ty::IntVar(_)))
+ if let Ok(
+ // Issue #53280
+ snippet,
+ ) = tcx.sess.source_map().span_to_snippet(sp) =>
+ {
+ if snippet.chars().all(|c| c.is_digit(10) || c == '-' || c == '_') {
+ diag.span_suggestion(
+ sp,
+ "use a float literal",
+ format!("{}.0", snippet),
+ MachineApplicable,
+ );
+ }
+ }
+ (ty::Param(expected), ty::Param(found)) => {
+ let generics = tcx.generics_of(body_owner_def_id);
+ let e_span = tcx.def_span(generics.type_param(expected, tcx).def_id);
+ if !sp.contains(e_span) {
+ diag.span_label(e_span, "expected type parameter");
+ }
+ let f_span = tcx.def_span(generics.type_param(found, tcx).def_id);
+ if !sp.contains(f_span) {
+ diag.span_label(f_span, "found type parameter");
+ }
+ diag.note(
+ "a type parameter was expected, but a different one was found; \
+ you might be missing a type parameter or trait bound",
+ );
+ diag.note(
+ "for more information, visit \
+ https://doc.rust-lang.org/book/ch10-02-traits.html\
+ #traits-as-parameters",
+ );
+ }
+ (ty::Alias(ty::Projection, _), ty::Alias(ty::Projection, _)) => {
+ diag.note("an associated type was expected, but a different one was found");
+ }
+ (ty::Param(p), ty::Alias(ty::Projection, proj)) | (ty::Alias(ty::Projection, proj), ty::Param(p))
+ if tcx.def_kind(proj.def_id) != DefKind::ImplTraitPlaceholder =>
+ {
+ let generics = tcx.generics_of(body_owner_def_id);
+ let p_span = tcx.def_span(generics.type_param(p, tcx).def_id);
+ if !sp.contains(p_span) {
+ diag.span_label(p_span, "this type parameter");
+ }
+ let hir = tcx.hir();
+ let mut note = true;
+ if let Some(generics) = generics
+ .type_param(p, tcx)
+ .def_id
+ .as_local()
+ .map(|id| hir.local_def_id_to_hir_id(id))
+ .and_then(|id| tcx.hir().find_parent(id))
+ .as_ref()
+ .and_then(|node| node.generics())
+ {
+ // Synthesize the associated type restriction `Add<Output = Expected>`.
+ // FIXME: extract this logic for use in other diagnostics.
+ let (trait_ref, assoc_substs) = proj.trait_ref_and_own_substs(tcx);
+ let path =
+ tcx.def_path_str_with_substs(trait_ref.def_id, trait_ref.substs);
+ let item_name = tcx.item_name(proj.def_id);
+ let item_args = self.format_generic_args(assoc_substs);
+
+ let path = if path.ends_with('>') {
+ format!(
+ "{}, {}{} = {}>",
+ &path[..path.len() - 1],
+ item_name,
+ item_args,
+ p
+ )
+ } else {
+ format!("{}<{}{} = {}>", path, item_name, item_args, p)
+ };
+ note = !suggest_constraining_type_param(
+ tcx,
+ generics,
+ diag,
+ &format!("{}", proj.self_ty()),
+ &path,
+ None,
+ );
+ }
+ if note {
+ diag.note("you might be missing a type parameter or trait bound");
+ }
+ }
+ (ty::Param(p), ty::Dynamic(..) | ty::Alias(ty::Opaque, ..))
+ | (ty::Dynamic(..) | ty::Alias(ty::Opaque, ..), ty::Param(p)) => {
+ let generics = tcx.generics_of(body_owner_def_id);
+ let p_span = tcx.def_span(generics.type_param(p, tcx).def_id);
+ if !sp.contains(p_span) {
+ diag.span_label(p_span, "this type parameter");
+ }
+ diag.help("type parameters must be constrained to match other types");
+ if tcx.sess.teach(&diag.get_code().unwrap()) {
+ diag.help(
+ "given a type parameter `T` and a method `foo`:
+```
+trait Trait<T> { fn foo(&tcx) -> T; }
+```
+the only ways to implement method `foo` are:
+- constrain `T` with an explicit type:
+```
+impl Trait<String> for X {
+ fn foo(&tcx) -> String { String::new() }
+}
+```
+- add a trait bound to `T` and call a method on that trait that returns `Self`:
+```
+impl<T: std::default::Default> Trait<T> for X {
+ fn foo(&tcx) -> T { <T as std::default::Default>::default() }
+}
+```
+- change `foo` to return an argument of type `T`:
+```
+impl<T> Trait<T> for X {
+ fn foo(&tcx, x: T) -> T { x }
+}
+```",
+ );
+ }
+ diag.note(
+ "for more information, visit \
+ https://doc.rust-lang.org/book/ch10-02-traits.html\
+ #traits-as-parameters",
+ );
+ }
+ (ty::Param(p), ty::Closure(..) | ty::Generator(..)) => {
+ let generics = tcx.generics_of(body_owner_def_id);
+ let p_span = tcx.def_span(generics.type_param(p, tcx).def_id);
+ if !sp.contains(p_span) {
+ diag.span_label(p_span, "this type parameter");
+ }
+ diag.help(&format!(
+ "every closure has a distinct type and so could not always match the \
+ caller-chosen type of parameter `{}`",
+ p
+ ));
+ }
+ (ty::Param(p), _) | (_, ty::Param(p)) => {
+ let generics = tcx.generics_of(body_owner_def_id);
+ let p_span = tcx.def_span(generics.type_param(p, tcx).def_id);
+ if !sp.contains(p_span) {
+ diag.span_label(p_span, "this type parameter");
+ }
+ }
+ (ty::Alias(ty::Projection, proj_ty), _) if tcx.def_kind(proj_ty.def_id) != DefKind::ImplTraitPlaceholder => {
+ self.expected_projection(
+ diag,
+ proj_ty,
+ values,
+ body_owner_def_id,
+ cause.code(),
+ );
+ }
+ (_, ty::Alias(ty::Projection, proj_ty)) if tcx.def_kind(proj_ty.def_id) != DefKind::ImplTraitPlaceholder => {
+ let msg = format!(
+ "consider constraining the associated type `{}` to `{}`",
+ values.found, values.expected,
+ );
+ if !(self.suggest_constraining_opaque_associated_type(
+ diag,
+ &msg,
+ proj_ty,
+ values.expected,
+ ) || self.suggest_constraint(
+ diag,
+ &msg,
+ body_owner_def_id,
+ proj_ty,
+ values.expected,
+ )) {
+ diag.help(&msg);
+ diag.note(
+ "for more information, visit \
+ https://doc.rust-lang.org/book/ch19-03-advanced-traits.html",
+ );
+ }
+ }
+ _ => {}
+ }
+ debug!(
+ "note_and_explain_type_err expected={:?} ({:?}) found={:?} ({:?})",
+ values.expected,
+ values.expected.kind(),
+ values.found,
+ values.found.kind(),
+ );
+ }
+ CyclicTy(ty) => {
+ // Watch out for various cases of cyclic types and try to explain.
+ if ty.is_closure() || ty.is_generator() {
+ diag.note(
+ "closures cannot capture themselves or take themselves as argument;\n\
+ this error may be the result of a recent compiler bug-fix,\n\
+ see issue #46062 <https://github.com/rust-lang/rust/issues/46062>\n\
+ for more information",
+ );
+ }
+ }
+ TargetFeatureCast(def_id) => {
+ let target_spans = tcx.get_attrs(def_id, sym::target_feature).map(|attr| attr.span);
+ diag.note(
+ "functions with `#[target_feature]` can only be coerced to `unsafe` function pointers"
+ );
+ diag.span_labels(target_spans, "`#[target_feature]` added here");
+ }
+ _ => {}
+ }
+ }
+
+ fn suggest_constraint(
+ &self,
+ diag: &mut Diagnostic,
+ msg: &str,
+ body_owner_def_id: DefId,
+ proj_ty: &ty::AliasTy<'tcx>,
+ ty: Ty<'tcx>,
+ ) -> bool {
+ let tcx = self.tcx;
+ let assoc = tcx.associated_item(proj_ty.def_id);
+ let (trait_ref, assoc_substs) = proj_ty.trait_ref_and_own_substs(tcx);
+ if let Some(item) = tcx.hir().get_if_local(body_owner_def_id) {
+ if let Some(hir_generics) = item.generics() {
+ // Get the `DefId` for the type parameter corresponding to `A` in `<A as T>::Foo`.
+ // This will also work for `impl Trait`.
+ let def_id = if let ty::Param(param_ty) = proj_ty.self_ty().kind() {
+ let generics = tcx.generics_of(body_owner_def_id);
+ generics.type_param(param_ty, tcx).def_id
+ } else {
+ return false;
+ };
+ let Some(def_id) = def_id.as_local() else {
+ return false;
+ };
+
+ // First look in the `where` clause, as this might be
+ // `fn foo<T>(x: T) where T: Trait`.
+ for pred in hir_generics.bounds_for_param(def_id) {
+ if self.constrain_generic_bound_associated_type_structured_suggestion(
+ diag,
+ &trait_ref,
+ pred.bounds,
+ &assoc,
+ assoc_substs,
+ ty,
+ msg,
+ false,
+ ) {
+ return true;
+ }
+ }
+ }
+ }
+ false
+ }
+
+ /// An associated type was expected and a different type was found.
+ ///
+ /// We perform a few different checks to see what we can suggest:
+ ///
+ /// - In the current item, look for associated functions that return the expected type and
+ /// suggest calling them. (Not a structured suggestion.)
+ /// - If any of the item's generic bounds can be constrained, we suggest constraining the
+ /// associated type to the found type.
+ /// - If the associated type has a default type and was expected inside of a `trait`, we
+ /// mention that this is disallowed.
+ /// - If all other things fail, and the error is not because of a mismatch between the `trait`
+ /// and the `impl`, we provide a generic `help` to constrain the assoc type or call an assoc
+ /// fn that returns the type.
+ fn expected_projection(
+ &self,
+ diag: &mut Diagnostic,
+ proj_ty: &ty::AliasTy<'tcx>,
+ values: ExpectedFound<Ty<'tcx>>,
+ body_owner_def_id: DefId,
+ cause_code: &ObligationCauseCode<'_>,
+ ) {
+ let tcx = self.tcx;
+
+ let msg = format!(
+ "consider constraining the associated type `{}` to `{}`",
+ values.expected, values.found
+ );
+ let body_owner = tcx.hir().get_if_local(body_owner_def_id);
+ let current_method_ident = body_owner.and_then(|n| n.ident()).map(|i| i.name);
+
+ // We don't want to suggest calling an assoc fn in a scope where that isn't feasible.
+ let callable_scope = matches!(
+ body_owner,
+ Some(
+ hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(..), .. })
+ | hir::Node::TraitItem(hir::TraitItem { kind: hir::TraitItemKind::Fn(..), .. })
+ | hir::Node::ImplItem(hir::ImplItem { kind: hir::ImplItemKind::Fn(..), .. }),
+ )
+ );
+ let impl_comparison =
+ matches!(cause_code, ObligationCauseCode::CompareImplItemObligation { .. });
+ let assoc = tcx.associated_item(proj_ty.def_id);
+ if !callable_scope || impl_comparison {
+ // We do not want to suggest calling functions when the reason of the
+ // type error is a comparison of an `impl` with its `trait` or when the
+ // scope is outside of a `Body`.
+ } else {
+ // If we find a suitable associated function that returns the expected type, we don't
+ // want the more general suggestion later in this method about "consider constraining
+ // the associated type or calling a method that returns the associated type".
+ let point_at_assoc_fn = self.point_at_methods_that_satisfy_associated_type(
+ diag,
+ assoc.container_id(tcx),
+ current_method_ident,
+ proj_ty.def_id,
+ values.expected,
+ );
+ // Possibly suggest constraining the associated type to conform to the
+ // found type.
+ if self.suggest_constraint(diag, &msg, body_owner_def_id, proj_ty, values.found)
+ || point_at_assoc_fn
+ {
+ return;
+ }
+ }
+
+ self.suggest_constraining_opaque_associated_type(diag, &msg, proj_ty, values.found);
+
+ if self.point_at_associated_type(diag, body_owner_def_id, values.found) {
+ return;
+ }
+
+ if !impl_comparison {
+ // Generic suggestion when we can't be more specific.
+ if callable_scope {
+ diag.help(&format!(
+ "{} or calling a method that returns `{}`",
+ msg, values.expected
+ ));
+ } else {
+ diag.help(&msg);
+ }
+ diag.note(
+ "for more information, visit \
+ https://doc.rust-lang.org/book/ch19-03-advanced-traits.html",
+ );
+ }
+ if tcx.sess.teach(&diag.get_code().unwrap()) {
+ diag.help(
+ "given an associated type `T` and a method `foo`:
+```
+trait Trait {
+type T;
+fn foo(&tcx) -> Self::T;
+}
+```
+the only way of implementing method `foo` is to constrain `T` with an explicit associated type:
+```
+impl Trait for X {
+type T = String;
+fn foo(&tcx) -> Self::T { String::new() }
+}
+```",
+ );
+ }
+ }
+
+ /// When the expected `impl Trait` is not defined in the current item, it will come from
+ /// a return type. This can occur when dealing with `TryStream` (#71035).
+ fn suggest_constraining_opaque_associated_type(
+ &self,
+ diag: &mut Diagnostic,
+ msg: &str,
+ proj_ty: &ty::AliasTy<'tcx>,
+ ty: Ty<'tcx>,
+ ) -> bool {
+ let tcx = self.tcx;
+
+ let assoc = tcx.associated_item(proj_ty.def_id);
+ if let ty::Alias(ty::Opaque, ty::AliasTy { def_id, .. }) = *proj_ty.self_ty().kind() {
+ let opaque_local_def_id = def_id.as_local();
+ let opaque_hir_ty = if let Some(opaque_local_def_id) = opaque_local_def_id {
+ match &tcx.hir().expect_item(opaque_local_def_id).kind {
+ hir::ItemKind::OpaqueTy(opaque_hir_ty) => opaque_hir_ty,
+ _ => bug!("The HirId comes from a `ty::Opaque`"),
+ }
+ } else {
+ return false;
+ };
+
+ let (trait_ref, assoc_substs) = proj_ty.trait_ref_and_own_substs(tcx);
+
+ self.constrain_generic_bound_associated_type_structured_suggestion(
+ diag,
+ &trait_ref,
+ opaque_hir_ty.bounds,
+ assoc,
+ assoc_substs,
+ ty,
+ msg,
+ true,
+ )
+ } else {
+ false
+ }
+ }
+
+ fn point_at_methods_that_satisfy_associated_type(
+ &self,
+ diag: &mut Diagnostic,
+ assoc_container_id: DefId,
+ current_method_ident: Option<Symbol>,
+ proj_ty_item_def_id: DefId,
+ expected: Ty<'tcx>,
+ ) -> bool {
+ let tcx = self.tcx;
+
+ let items = tcx.associated_items(assoc_container_id);
+ // Find all the methods in the trait that could be called to construct the
+ // expected associated type.
+ // FIXME: consider suggesting the use of associated `const`s.
+ let methods: Vec<(Span, String)> = items
+ .in_definition_order()
+ .filter(|item| {
+ ty::AssocKind::Fn == item.kind && Some(item.name) != current_method_ident
+ })
+ .filter_map(|item| {
+ let method = tcx.fn_sig(item.def_id);
+ match *method.output().skip_binder().kind() {
+ ty::Alias(ty::Projection, ty::AliasTy { def_id: item_def_id, .. })
+ if item_def_id == proj_ty_item_def_id =>
+ {
+ Some((
+ tcx.def_span(item.def_id),
+ format!("consider calling `{}`", tcx.def_path_str(item.def_id)),
+ ))
+ }
+ _ => None,
+ }
+ })
+ .collect();
+ if !methods.is_empty() {
+ // Use a single `help:` to show all the methods in the trait that can
+ // be used to construct the expected associated type.
+ let mut span: MultiSpan =
+ methods.iter().map(|(sp, _)| *sp).collect::<Vec<Span>>().into();
+ let msg = format!(
+ "{some} method{s} {are} available that return{r} `{ty}`",
+ some = if methods.len() == 1 { "a" } else { "some" },
+ s = pluralize!(methods.len()),
+ are = pluralize!("is", methods.len()),
+ r = if methods.len() == 1 { "s" } else { "" },
+ ty = expected
+ );
+ for (sp, label) in methods.into_iter() {
+ span.push_span_label(sp, label);
+ }
+ diag.span_help(span, &msg);
+ return true;
+ }
+ false
+ }
+
+ fn point_at_associated_type(
+ &self,
+ diag: &mut Diagnostic,
+ body_owner_def_id: DefId,
+ found: Ty<'tcx>,
+ ) -> bool {
+ let tcx = self.tcx;
+
+ let Some(hir_id) = body_owner_def_id.as_local() else {
+ return false;
+ };
+ let hir_id = tcx.hir().local_def_id_to_hir_id(hir_id);
+ // When `body_owner` is an `impl` or `trait` item, look in its associated types for
+ // `expected` and point at it.
+ let parent_id = tcx.hir().get_parent_item(hir_id);
+ let item = tcx.hir().find_by_def_id(parent_id.def_id);
+
+ debug!("expected_projection parent item {:?}", item);
+
+ let param_env = tcx.param_env(body_owner_def_id);
+
+ match item {
+ Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Trait(.., items), .. })) => {
+ // FIXME: account for `#![feature(specialization)]`
+ for item in &items[..] {
+ match item.kind {
+ hir::AssocItemKind::Type => {
+ // FIXME: account for returning some type in a trait fn impl that has
+ // an assoc type as a return type (#72076).
+ if let hir::Defaultness::Default { has_value: true } =
+ tcx.impl_defaultness(item.id.owner_id)
+ {
+ let assoc_ty = tcx.bound_type_of(item.id.owner_id).subst_identity();
+ if self.infcx.can_eq(param_env, assoc_ty, found).is_ok() {
+ diag.span_label(
+ item.span,
+ "associated type defaults can't be assumed inside the \
+ trait defining them",
+ );
+ return true;
+ }
+ }
+ }
+ _ => {}
+ }
+ }
+ }
+ Some(hir::Node::Item(hir::Item {
+ kind: hir::ItemKind::Impl(hir::Impl { items, .. }),
+ ..
+ })) => {
+ for item in &items[..] {
+ if let hir::AssocItemKind::Type = item.kind {
+ let assoc_ty = tcx.bound_type_of(item.id.owner_id).subst_identity();
+
+ if self.infcx.can_eq(param_env, assoc_ty, found).is_ok() {
+ diag.span_label(item.span, "expected this associated type");
+ return true;
+ }
+ }
+ }
+ }
+ _ => {}
+ }
+ false
+ }
+
+ /// Given a slice of `hir::GenericBound`s, if any of them corresponds to the `trait_ref`
+ /// requirement, provide a structured suggestion to constrain it to a given type `ty`.
+ ///
+ /// `is_bound_surely_present` indicates whether we know the bound we're looking for is
+ /// inside `bounds`. If that's the case then we can consider `bounds` containing only one
+ /// trait bound as the one we're looking for. This can help in cases where the associated
+ /// type is defined on a supertrait of the one present in the bounds.
+ fn constrain_generic_bound_associated_type_structured_suggestion(
+ &self,
+ diag: &mut Diagnostic,
+ trait_ref: &ty::TraitRef<'tcx>,
+ bounds: hir::GenericBounds<'_>,
+ assoc: &ty::AssocItem,
+ assoc_substs: &[ty::GenericArg<'tcx>],
+ ty: Ty<'tcx>,
+ msg: &str,
+ is_bound_surely_present: bool,
+ ) -> bool {
+ // FIXME: we would want to call `resolve_vars_if_possible` on `ty` before suggesting.
+
+ let trait_bounds = bounds.iter().filter_map(|bound| match bound {
+ hir::GenericBound::Trait(ptr, hir::TraitBoundModifier::None) => Some(ptr),
+ _ => None,
+ });
+
+ let matching_trait_bounds = trait_bounds
+ .clone()
+ .filter(|ptr| ptr.trait_ref.trait_def_id() == Some(trait_ref.def_id))
+ .collect::<Vec<_>>();
+
+ let span = match &matching_trait_bounds[..] {
+ &[ptr] => ptr.span,
+ &[] if is_bound_surely_present => match &trait_bounds.collect::<Vec<_>>()[..] {
+ &[ptr] => ptr.span,
+ _ => return false,
+ },
+ _ => return false,
+ };
+
+ self.constrain_associated_type_structured_suggestion(
+ diag,
+ span,
+ assoc,
+ assoc_substs,
+ ty,
+ msg,
+ )
+ }
+
+ /// Given a span corresponding to a bound, provide a structured suggestion to set an
+ /// associated type to a given type `ty`.
+ fn constrain_associated_type_structured_suggestion(
+ &self,
+ diag: &mut Diagnostic,
+ span: Span,
+ assoc: &ty::AssocItem,
+ assoc_substs: &[ty::GenericArg<'tcx>],
+ ty: Ty<'tcx>,
+ msg: &str,
+ ) -> bool {
+ let tcx = self.tcx;
+
+ if let Ok(has_params) =
+ tcx.sess.source_map().span_to_snippet(span).map(|snippet| snippet.ends_with('>'))
+ {
+ let (span, sugg) = if has_params {
+ let pos = span.hi() - BytePos(1);
+ let span = Span::new(pos, pos, span.ctxt(), span.parent());
+ (span, format!(", {} = {}", assoc.ident(tcx), ty))
+ } else {
+ let item_args = self.format_generic_args(assoc_substs);
+ (span.shrink_to_hi(), format!("<{}{} = {}>", assoc.ident(tcx), item_args, ty))
+ };
+ diag.span_suggestion_verbose(span, msg, sugg, MaybeIncorrect);
+ return true;
+ }
+ false
+ }
+
+ pub fn format_generic_args(&self, args: &[ty::GenericArg<'tcx>]) -> String {
+ FmtPrinter::new(self.tcx, hir::def::Namespace::TypeNS)
+ .path_generic_args(Ok, args)
+ .expect("could not write to `String`.")
+ .into_buffer()
+ }
+}
StatementAsExpression,
};
use rustc_middle::ty::print::with_no_trimmed_paths;
-use rustc_middle::ty::{self as ty, Ty, TypeVisitable};
+use rustc_middle::ty::{self as ty, IsSuggestable, Ty, TypeVisitable};
use rustc_span::{sym, BytePos, Span};
use crate::errors::SuggAddLetForLetChains;
}
}
+ pub(super) fn suggest_function_pointers(
+ &self,
+ cause: &ObligationCause<'tcx>,
+ span: Span,
+ exp_found: &ty::error::ExpectedFound<Ty<'tcx>>,
+ diag: &mut Diagnostic,
+ ) {
+ debug!("suggest_function_pointers(cause={:?}, exp_found={:?})", cause, exp_found);
+ let ty::error::ExpectedFound { expected, found } = exp_found;
+ let expected_inner = expected.peel_refs();
+ let found_inner = found.peel_refs();
+ if !expected_inner.is_fn() || !found_inner.is_fn() {
+ return;
+ }
+ match (&expected_inner.kind(), &found_inner.kind()) {
+ (ty::FnPtr(sig), ty::FnDef(did, substs)) => {
+ let expected_sig = &(self.normalize_fn_sig)(*sig);
+ let found_sig =
+ &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did).subst(self.tcx, substs));
+
+ let fn_name = self.tcx.def_path_str_with_substs(*did, substs);
+
+ if !self.same_type_modulo_infer(*found_sig, *expected_sig)
+ || !sig.is_suggestable(self.tcx, true)
+ || ty::util::is_intrinsic(self.tcx, *did)
+ {
+ return;
+ }
+
+ let (msg, sug) = match (expected.is_ref(), found.is_ref()) {
+ (true, false) => {
+ let msg = "consider using a reference";
+ let sug = format!("&{fn_name}");
+ (msg, sug)
+ }
+ (false, true) => {
+ let msg = "consider removing the reference";
+ let sug = format!("{fn_name}");
+ (msg, sug)
+ }
+ (true, true) => {
+ diag.note("fn items are distinct from fn pointers");
+ let msg = "consider casting to a fn pointer";
+ let sug = format!("&({fn_name} as {sig})");
+ (msg, sug)
+ }
+ (false, false) => {
+ diag.note("fn items are distinct from fn pointers");
+ let msg = "consider casting to a fn pointer";
+ let sug = format!("{fn_name} as {sig}");
+ (msg, sug)
+ }
+ };
+ diag.span_suggestion(span, msg, sug, Applicability::MaybeIncorrect);
+ }
+ (ty::FnDef(did1, substs1), ty::FnDef(did2, substs2)) => {
+ let expected_sig =
+ &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did1).subst(self.tcx, substs1));
+ let found_sig =
+ &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did2).subst(self.tcx, substs2));
+
+ if self.same_type_modulo_infer(*expected_sig, *found_sig) {
+ diag.note("different fn items have unique types, even if their signatures are the same");
+ }
+
+ if !self.same_type_modulo_infer(*found_sig, *expected_sig)
+ || !found_sig.is_suggestable(self.tcx, true)
+ || !expected_sig.is_suggestable(self.tcx, true)
+ || ty::util::is_intrinsic(self.tcx, *did1)
+ || ty::util::is_intrinsic(self.tcx, *did2)
+ {
+ return;
+ }
+
+ let fn_name = self.tcx.def_path_str_with_substs(*did2, substs2);
+ let sug = if found.is_ref() {
+ format!("&({fn_name} as {found_sig})")
+ } else {
+ format!("{fn_name} as {found_sig}")
+ };
+
+ let msg = format!(
+ "consider casting both fn items to fn pointers using `as {expected_sig}`"
+ );
+
+ diag.span_suggestion_hidden(span, msg, sug, Applicability::MaybeIncorrect);
+ }
+ (ty::FnDef(did, substs), ty::FnPtr(sig)) => {
+ let expected_sig =
+ &(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did).subst(self.tcx, substs));
+ let found_sig = &(self.normalize_fn_sig)(*sig);
+
+ if !self.same_type_modulo_infer(*found_sig, *expected_sig) {
+ return;
+ }
+
+ let fn_name = self.tcx.def_path_str_with_substs(*did, substs);
+
+ let casting = if expected.is_ref() {
+ format!("&({fn_name} as {found_sig})")
+ } else {
+ format!("{fn_name} as {found_sig}")
+ };
+
+ diag.help(&format!("consider casting the fn item to a fn pointer: `{}`", casting));
+ }
+ _ => {
+ return;
+ }
+ };
+ }
+
pub fn should_suggest_as_ref(&self, expected: Ty<'tcx>, found: Ty<'tcx>) -> Option<&str> {
if let (ty::Adt(exp_def, exp_substs), ty::Ref(_, found_ty, _)) =
(expected.kind(), found.kind())
span: Span,
) {
let hir = self.tcx.hir();
- let fn_hir_id = hir.parent_id(cause.body_id);
- if let Some(node) = self.tcx.hir().find(fn_hir_id) &&
+ if let Some(node) = self.tcx.hir().find_by_def_id(cause.body_id) &&
let hir::Node::Item(hir::Item {
kind: hir::ItemKind::Fn(_sig, _, body_id), ..
}) = node {
use crate::traits;
use hir::def::DefKind;
use hir::def_id::{DefId, LocalDefId};
-use hir::{HirId, OpaqueTyOrigin};
+use hir::OpaqueTyOrigin;
use rustc_data_structures::sync::Lrc;
use rustc_data_structures::vec_map::VecMap;
use rustc_hir as hir;
pub fn replace_opaque_types_with_inference_vars<T: TypeFoldable<'tcx>>(
&self,
value: T,
- body_id: HirId,
+ body_id: LocalDefId,
span: Span,
param_env: ty::ParamEnv<'tcx>,
) -> InferOk<'tcx, T> {
mod structural_impls;
pub mod util;
+use hir::def_id::LocalDefId;
use rustc_hir as hir;
use rustc_middle::ty::error::{ExpectedFound, TypeError};
use rustc_middle::ty::{self, Const, ToPredicate, Ty, TyCtxt};
pub fn misc(
tcx: TyCtxt<'tcx>,
span: Span,
- body_id: hir::HirId,
+ body_id: LocalDefId,
param_env: ty::ParamEnv<'tcx>,
trait_ref: impl ToPredicate<'tcx, O>,
) -> Obligation<'tcx, O> {
use rustc_data_structures::sync::{Lrc, OnceCell, WorkerLocal};
use rustc_errors::{ErrorGuaranteed, PResult};
use rustc_expand::base::{ExtCtxt, LintStoreExpand, ResolverExpand};
-use rustc_hir::def_id::StableCrateId;
+use rustc_hir::def_id::{StableCrateId, LOCAL_CRATE};
use rustc_lint::{BufferedEarlyLint, EarlyCheckNode, LintStore};
use rustc_metadata::creader::CStore;
use rustc_middle::arena::Arena;
use rustc_query_impl::{OnDiskCache, Queries as TcxQueries};
use rustc_resolve::{Resolver, ResolverArenas};
use rustc_session::config::{CrateType, Input, OutputFilenames, OutputType};
-use rustc_session::cstore::{MetadataLoader, MetadataLoaderDyn, Untracked};
+use rustc_session::cstore::{CrateStoreDyn, MetadataLoader, MetadataLoaderDyn, Untracked};
use rustc_session::output::filename_for_input;
use rustc_session::search_paths::PathKind;
use rustc_session::{Limit, Session};
use std::path::{Path, PathBuf};
use std::pin::Pin;
use std::rc::Rc;
-use std::sync::LazyLock;
+use std::sync::{Arc, LazyLock};
use std::{env, fs, iter};
pub fn parse<'a>(sess: &'a Session) -> PResult<'a, ast::Crate> {
fn write_out_deps(
sess: &Session,
- boxed_resolver: &RefCell<BoxedResolver>,
+ cstore: &CrateStoreDyn,
outputs: &OutputFilenames,
out_filenames: &[PathBuf],
) {
}
}
- boxed_resolver.borrow_mut().access(|resolver| {
- for cnum in resolver.cstore().crates_untracked() {
- let source = resolver.cstore().crate_source_untracked(cnum);
- if let Some((path, _)) = &source.dylib {
- files.push(escape_dep_filename(&path.display().to_string()));
- }
- if let Some((path, _)) = &source.rlib {
- files.push(escape_dep_filename(&path.display().to_string()));
- }
- if let Some((path, _)) = &source.rmeta {
- files.push(escape_dep_filename(&path.display().to_string()));
- }
+ let cstore = cstore.as_any().downcast_ref::<CStore>().unwrap();
+ for cnum in cstore.crates_untracked() {
+ let source = cstore.crate_source_untracked(cnum);
+ if let Some((path, _)) = &source.dylib {
+ files.push(escape_dep_filename(&path.display().to_string()));
}
- });
+ if let Some((path, _)) = &source.rlib {
+ files.push(escape_dep_filename(&path.display().to_string()));
+ }
+ if let Some((path, _)) = &source.rmeta {
+ files.push(escape_dep_filename(&path.display().to_string()));
+ }
+ }
}
let mut file = BufWriter::new(fs::File::create(&deps_filename)?);
}
}
-pub fn prepare_outputs(
- sess: &Session,
- krate: &ast::Crate,
- boxed_resolver: &RefCell<BoxedResolver>,
- crate_name: Symbol,
-) -> Result<OutputFilenames> {
+fn output_filenames(tcx: TyCtxt<'_>, (): ()) -> Arc<OutputFilenames> {
+ let sess = tcx.sess;
let _timer = sess.timer("prepare_outputs");
+ let (_, krate) = &*tcx.resolver_for_lowering(()).borrow();
+ let crate_name = tcx.crate_name(LOCAL_CRATE);
// FIXME: rustdoc passes &[] instead of &krate.attrs here
let outputs = util::build_output_filenames(&krate.attrs, sess);
if let Some(ref input_path) = sess.io.input.opt_path() {
if sess.opts.will_create_output_file() {
if output_contains_path(&output_paths, input_path) {
- let reported = sess.emit_err(InputFileWouldBeOverWritten { path: input_path });
- return Err(reported);
+ sess.emit_fatal(InputFileWouldBeOverWritten { path: input_path });
}
if let Some(ref dir_path) = output_conflicts_with_dir(&output_paths) {
- let reported =
- sess.emit_err(GeneratedFileConflictsWithDirectory { input_path, dir_path });
- return Err(reported);
+ sess.emit_fatal(GeneratedFileConflictsWithDirectory { input_path, dir_path });
}
}
}
if let Some(ref dir) = sess.io.temps_dir {
if fs::create_dir_all(dir).is_err() {
- let reported = sess.emit_err(TempsDirError);
- return Err(reported);
+ sess.emit_fatal(TempsDirError);
}
}
- write_out_deps(sess, boxed_resolver, &outputs, &output_paths);
+ write_out_deps(sess, tcx.cstore_untracked(), &outputs, &output_paths);
let only_dep_info = sess.opts.output_types.contains_key(&OutputType::DepInfo)
&& sess.opts.output_types.len() == 1;
if !only_dep_info {
if let Some(ref dir) = sess.io.output_dir {
if fs::create_dir_all(dir).is_err() {
- let reported = sess.emit_err(OutDirError);
- return Err(reported);
+ sess.emit_fatal(OutDirError);
}
}
}
- Ok(outputs)
+ outputs.into()
}
pub static DEFAULT_QUERY_PROVIDERS: LazyLock<Providers> = LazyLock::new(|| {
let providers = &mut Providers::default();
providers.analysis = analysis;
providers.hir_crate = rustc_ast_lowering::lower_to_hir;
+ providers.output_filenames = output_filenames;
proc_macro_decls::provide(providers);
rustc_const_eval::provide(providers);
rustc_middle::hir::provide(providers);
}
impl<'a, 'tcx> QueryResult<'a, QueryContext<'tcx>> {
- pub fn enter<T>(mut self, f: impl FnOnce(TyCtxt<'tcx>) -> T) -> T {
+ pub fn enter<T>(&mut self, f: impl FnOnce(TyCtxt<'tcx>) -> T) -> T {
(*self.0).get_mut().enter(f)
}
}
let crate_name = *self.crate_name()?.borrow();
let (krate, resolver, lint_store) = self.expansion()?.steal();
- let outputs = passes::prepare_outputs(self.session(), &krate, &resolver, crate_name)?;
-
let ty::ResolverOutputs {
untracked,
global_ctxt: untracked_resolutions,
tcx.arena.alloc(Steal::new((untracked_resolver_for_lowering, krate))),
);
feed.resolutions(tcx.arena.alloc(untracked_resolutions));
- feed.output_filenames(tcx.arena.alloc(std::sync::Arc::new(outputs)));
feed.features_query(tcx.sess.features_untracked());
let feed = tcx.feed_local_crate();
feed.crate_name(crate_name);
cx.tcx,
param_env,
ty,
- traits::ObligationCause::misc(item.span, item.hir_id()),
+ traits::ObligationCause::misc(item.span, item.owner_id.def_id),
)
.is_ok()
{
let ty = substs.type_at(0);
let infcx = cx.tcx.infer_ctxt().build();
+ let body_def_id = cx.tcx.hir().body_owner_def_id(body_id);
let cause = ObligationCause::new(
span,
- body_id.hir_id,
+ body_def_id,
rustc_infer::traits::ObligationCauseCode::MiscObligation,
);
let errors = rustc_trait_selection::traits::fully_solve_bound(
let vis = self.get_visibility(id);
let span = self.get_span(id, sess);
let macro_rules = match kind {
- DefKind::Macro(..) => self.root.tables.macro_rules.get(self, id).is_some(),
+ DefKind::Macro(..) => self.root.tables.is_macro_rules.get(self, id),
_ => false,
};
fn get_macro(self, id: DefIndex, sess: &Session) -> ast::MacroDef {
match self.def_kind(id) {
DefKind::Macro(_) => {
- let macro_rules = self.root.tables.macro_rules.get(self, id).is_some();
+ let macro_rules = self.root.tables.is_macro_rules.get(self, id);
let body =
self.root.tables.macro_definition.get(self, id).unwrap().decode((self, sess));
ast::MacroDef { macro_rules, body: ast::ptr::P(body) }
}
fn get_attr_flags(self, index: DefIndex) -> AttrFlags {
- self.root.tables.attr_flags.get(self, index).unwrap_or(AttrFlags::empty())
+ self.root.tables.attr_flags.get(self, index)
}
fn get_is_intrinsic(self, index: DefIndex) -> bool {
- self.root.tables.is_intrinsic.get(self, index).is_some()
+ self.root.tables.is_intrinsic.get(self, index)
}
}
deduced_param_attrs => { table }
is_type_alias_impl_trait => {
debug_assert_eq!(tcx.def_kind(def_id), DefKind::OpaqueTy);
- cdata
- .root
- .tables
- .is_type_alias_impl_trait
- .get(cdata, def_id.index)
- .is_some()
+ cdata.root.tables.is_type_alias_impl_trait.get(cdata, def_id.index)
}
collect_return_position_impl_trait_in_trait_tys => {
Ok(cdata
use rustc_span::{
self, DebuggerVisualizerFile, ExternalSource, FileName, SourceFile, Span, SyntaxContext,
};
-use rustc_target::abi::VariantIdx;
use std::borrow::Borrow;
use std::collections::hash_map::Entry;
use std::hash::Hash;
self.lazy(DefPathHashMapRef::BorrowedFromTcx(self.tcx.def_path_hash_to_def_index_map()))
}
- fn encode_source_map(&mut self) -> LazyTable<u32, LazyValue<rustc_span::SourceFile>> {
+ fn encode_source_map(&mut self) -> LazyTable<u32, Option<LazyValue<rustc_span::SourceFile>>> {
let source_map = self.tcx.sess.source_map();
let all_source_files = source_map.files();
attr_flags |= AttrFlags::IS_DOC_HIDDEN;
}
if !attr_flags.is_empty() {
- self.tables.attr_flags.set(def_id.local_def_index, attr_flags);
+ self.tables.attr_flags.set_nullable(def_id.local_def_index, attr_flags);
}
}
record!(self.tables.super_predicates_of[def_id] <- self.tcx.super_predicates_of(def_id));
}
if let DefKind::Enum | DefKind::Struct | DefKind::Union = def_kind {
- let params_in_repr = self.tcx.params_in_repr(def_id);
- record!(self.tables.params_in_repr[def_id] <- params_in_repr);
+ self.encode_info_for_adt(def_id);
}
if should_encode_trait_impl_trait_tys(tcx, def_id)
&& let Ok(table) = self.tcx.collect_return_position_impl_trait_in_trait_tys(def_id)
}
}
- fn encode_enum_variant_info(&mut self, def: ty::AdtDef<'tcx>, index: VariantIdx) {
+ #[instrument(level = "trace", skip(self))]
+ fn encode_info_for_adt(&mut self, def_id: DefId) {
let tcx = self.tcx;
- let variant = &def.variant(index);
- let def_id = variant.def_id;
- debug!("EncodeContext::encode_enum_variant_info({:?})", def_id);
-
- let data = VariantData {
- discr: variant.discr,
- ctor: variant.ctor.map(|(kind, def_id)| (kind, def_id.index)),
- is_non_exhaustive: variant.is_field_list_non_exhaustive(),
- };
+ let adt_def = tcx.adt_def(def_id);
+ record!(self.tables.repr_options[def_id] <- adt_def.repr());
- record!(self.tables.variant_data[def_id] <- data);
- self.tables.constness.set(def_id.index, hir::Constness::Const);
- record_array!(self.tables.children[def_id] <- variant.fields.iter().map(|f| {
- assert!(f.did.is_local());
- f.did.index
- }));
- if let Some((CtorKind::Fn, ctor_def_id)) = variant.ctor {
- // FIXME(eddyb) encode signature only in `encode_enum_variant_ctor`.
- record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(ctor_def_id));
+ let params_in_repr = self.tcx.params_in_repr(def_id);
+ record!(self.tables.params_in_repr[def_id] <- params_in_repr);
+
+ if adt_def.is_enum() {
+ record_array!(self.tables.children[def_id] <- iter::from_generator(||
+ for variant in tcx.adt_def(def_id).variants() {
+ yield variant.def_id.index;
+ // Encode constructors which take a separate slot in value namespace.
+ if let Some(ctor_def_id) = variant.ctor_def_id() {
+ yield ctor_def_id.index;
+ }
+ }
+ ));
+ } else {
+ // For non-enum, there is only one variant, and its def_id is the adt's.
+ debug_assert_eq!(adt_def.variants().len(), 1);
+ debug_assert_eq!(adt_def.non_enum_variant().def_id, def_id);
+ // Therefore, the loop over variants will encode its fields as the adt's children.
}
- }
- fn encode_enum_variant_ctor(&mut self, def: ty::AdtDef<'tcx>, index: VariantIdx) {
- let variant = &def.variant(index);
- let Some((ctor_kind, def_id)) = variant.ctor else { return };
- debug!("EncodeContext::encode_enum_variant_ctor({:?})", def_id);
+ for variant in adt_def.variants().iter() {
+ let data = VariantData {
+ discr: variant.discr,
+ ctor: variant.ctor.map(|(kind, def_id)| (kind, def_id.index)),
+ is_non_exhaustive: variant.is_field_list_non_exhaustive(),
+ };
+ record!(self.tables.variant_data[variant.def_id] <- data);
- // FIXME(eddyb) encode only the `CtorKind` for constructors.
- let data = VariantData {
- discr: variant.discr,
- ctor: Some((ctor_kind, def_id.index)),
- is_non_exhaustive: variant.is_field_list_non_exhaustive(),
- };
+ self.tables.constness.set(variant.def_id.index, hir::Constness::Const);
+ record_array!(self.tables.children[variant.def_id] <- variant.fields.iter().map(|f| {
+ assert!(f.did.is_local());
+ f.did.index
+ }));
- record!(self.tables.variant_data[def_id] <- data);
- self.tables.constness.set(def_id.index, hir::Constness::Const);
- if ctor_kind == CtorKind::Fn {
- record!(self.tables.fn_sig[def_id] <- self.tcx.fn_sig(def_id));
+ if let Some((CtorKind::Fn, ctor_def_id)) = variant.ctor {
+ self.tables.constness.set(ctor_def_id.index, hir::Constness::Const);
+ let fn_sig = tcx.fn_sig(ctor_def_id);
+ record!(self.tables.fn_sig[ctor_def_id] <- fn_sig);
+ // FIXME only encode signature for ctor_def_id
+ record!(self.tables.fn_sig[variant.def_id] <- fn_sig);
+ }
}
}
}
}
- fn encode_struct_ctor(&mut self, adt_def: ty::AdtDef<'tcx>) {
- let variant = adt_def.non_enum_variant();
- let Some((ctor_kind, def_id)) = variant.ctor else { return };
- debug!("EncodeContext::encode_struct_ctor({:?})", def_id);
-
- let data = VariantData {
- discr: variant.discr,
- ctor: Some((ctor_kind, def_id.index)),
- is_non_exhaustive: variant.is_field_list_non_exhaustive(),
- };
-
- record!(self.tables.repr_options[def_id] <- adt_def.repr());
- record!(self.tables.variant_data[def_id] <- data);
- self.tables.constness.set(def_id.index, hir::Constness::Const);
- if ctor_kind == CtorKind::Fn {
- record!(self.tables.fn_sig[def_id] <- self.tcx.fn_sig(def_id));
- }
- }
-
fn encode_explicit_item_bounds(&mut self, def_id: DefId) {
debug!("EncodeContext::encode_explicit_item_bounds({:?})", def_id);
let bounds = self.tcx.explicit_item_bounds(def_id);
if impl_item.kind == ty::AssocKind::Fn {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
if tcx.is_intrinsic(def_id) {
- self.tables.is_intrinsic.set(def_id.index, ());
+ self.tables.is_intrinsic.set_nullable(def_id.index, true);
}
}
}
}
hir::ItemKind::Macro(ref macro_def, _) => {
if macro_def.macro_rules {
- self.tables.macro_rules.set(def_id.index, ());
+ self.tables.is_macro_rules.set_nullable(def_id.index, true);
}
record!(self.tables.macro_definition[def_id] <- &*macro_def.body);
}
hir::ItemKind::OpaqueTy(ref opaque) => {
self.encode_explicit_item_bounds(def_id);
if matches!(opaque.origin, hir::OpaqueTyOrigin::TyAlias) {
- self.tables.is_type_alias_impl_trait.set(def_id.index, ());
+ self.tables.is_type_alias_impl_trait.set_nullable(def_id.index, true);
}
}
- hir::ItemKind::Enum(..) => {
- let adt_def = self.tcx.adt_def(def_id);
- record!(self.tables.repr_options[def_id] <- adt_def.repr());
- }
- hir::ItemKind::Struct(..) => {
- let adt_def = self.tcx.adt_def(def_id);
- record!(self.tables.repr_options[def_id] <- adt_def.repr());
- self.tables.constness.set(def_id.index, hir::Constness::Const);
-
- let variant = adt_def.non_enum_variant();
- record!(self.tables.variant_data[def_id] <- VariantData {
- discr: variant.discr,
- ctor: variant.ctor.map(|(kind, def_id)| (kind, def_id.index)),
- is_non_exhaustive: variant.is_field_list_non_exhaustive(),
- });
- }
- hir::ItemKind::Union(..) => {
- let adt_def = self.tcx.adt_def(def_id);
- record!(self.tables.repr_options[def_id] <- adt_def.repr());
-
- let variant = adt_def.non_enum_variant();
- record!(self.tables.variant_data[def_id] <- VariantData {
- discr: variant.discr,
- ctor: variant.ctor.map(|(kind, def_id)| (kind, def_id.index)),
- is_non_exhaustive: variant.is_field_list_non_exhaustive(),
- });
- }
hir::ItemKind::Impl(hir::Impl { defaultness, constness, .. }) => {
self.tables.impl_defaultness.set(def_id.index, *defaultness);
self.tables.constness.set(def_id.index, *constness);
}
hir::ItemKind::Static(..)
| hir::ItemKind::Const(..)
+ | hir::ItemKind::Enum(..)
+ | hir::ItemKind::Struct(..)
+ | hir::ItemKind::Union(..)
| hir::ItemKind::ForeignMod { .. }
| hir::ItemKind::GlobalAsm(..)
| hir::ItemKind::TyAlias(..) => {}
};
// FIXME(eddyb) there should be a nicer way to do this.
match item.kind {
- hir::ItemKind::Enum(..) => {
- record_array!(self.tables.children[def_id] <- iter::from_generator(||
- for variant in tcx.adt_def(def_id).variants() {
- yield variant.def_id.index;
- // Encode constructors which take a separate slot in value namespace.
- if let Some(ctor_def_id) = variant.ctor_def_id() {
- yield ctor_def_id.index;
- }
- }
- ))
- }
- hir::ItemKind::Struct(..) | hir::ItemKind::Union(..) => {
- record_array!(self.tables.children[def_id] <-
- self.tcx.adt_def(def_id).non_enum_variant().fields.iter().map(|f| {
- assert!(f.did.is_local());
- f.did.index
- })
- )
- }
hir::ItemKind::Impl { .. } | hir::ItemKind::Trait(..) => {
let associated_item_def_ids = self.tcx.associated_item_def_ids(def_id);
record_array!(self.tables.children[def_id] <-
if let hir::ItemKind::Fn(..) = item.kind {
record!(self.tables.fn_sig[def_id] <- tcx.fn_sig(def_id));
if tcx.is_intrinsic(def_id) {
- self.tables.is_intrinsic.set(def_id.index, ());
+ self.tables.is_intrinsic.set_nullable(def_id.index, true);
}
}
if let hir::ItemKind::Impl { .. } = item.kind {
// so it's easier to do that here then to wait until we would encounter
// normally in the visitor walk.
match item.kind {
- hir::ItemKind::Enum(..) => {
- let def = self.tcx.adt_def(item.owner_id.to_def_id());
- for (i, _) in def.variants().iter_enumerated() {
- self.encode_enum_variant_info(def, i);
- self.encode_enum_variant_ctor(def, i);
- }
- }
- hir::ItemKind::Struct(..) => {
- let def = self.tcx.adt_def(item.owner_id.to_def_id());
- self.encode_struct_ctor(def);
- }
hir::ItemKind::Impl { .. } => {
for &trait_item_def_id in
self.tcx.associated_item_def_ids(item.owner_id.to_def_id()).iter()
}
if let hir::ForeignItemKind::Fn(..) = nitem.kind {
if tcx.is_intrinsic(def_id) {
- self.tables.is_intrinsic.set(def_id.index, ());
+ self.tables.is_intrinsic.set_nullable(def_id.index, true);
}
}
}
Previous(NonZeroUsize),
}
-type SyntaxContextTable = LazyTable<u32, LazyValue<SyntaxContextData>>;
-type ExpnDataTable = LazyTable<ExpnIndex, LazyValue<ExpnData>>;
-type ExpnHashTable = LazyTable<ExpnIndex, LazyValue<ExpnHash>>;
+type SyntaxContextTable = LazyTable<u32, Option<LazyValue<SyntaxContextData>>>;
+type ExpnDataTable = LazyTable<ExpnIndex, Option<LazyValue<ExpnData>>>;
+type ExpnHashTable = LazyTable<ExpnIndex, Option<LazyValue<ExpnHash>>>;
#[derive(MetadataEncodable, MetadataDecodable)]
pub(crate) struct ProcMacroData {
def_path_hash_map: LazyValue<DefPathHashMapRef<'static>>,
- source_map: LazyTable<u32, LazyValue<rustc_span::SourceFile>>,
+ source_map: LazyTable<u32, Option<LazyValue<rustc_span::SourceFile>>>,
compiler_builtins: bool,
needs_allocator: bool,
/// Define `LazyTables` and `TableBuilders` at the same time.
macro_rules! define_tables {
- ($($name:ident: Table<$IDX:ty, $T:ty>),+ $(,)?) => {
+ (
+ - nullable: $($name1:ident: Table<$IDX1:ty, $T1:ty>,)+
+ - optional: $($name2:ident: Table<$IDX2:ty, $T2:ty>,)+
+ ) => {
#[derive(MetadataEncodable, MetadataDecodable)]
pub(crate) struct LazyTables {
- $($name: LazyTable<$IDX, $T>),+
+ $($name1: LazyTable<$IDX1, $T1>,)+
+ $($name2: LazyTable<$IDX2, Option<$T2>>,)+
}
#[derive(Default)]
struct TableBuilders {
- $($name: TableBuilder<$IDX, $T>),+
+ $($name1: TableBuilder<$IDX1, $T1>,)+
+ $($name2: TableBuilder<$IDX2, Option<$T2>>,)+
}
impl TableBuilders {
fn encode(&self, buf: &mut FileEncoder) -> LazyTables {
LazyTables {
- $($name: self.$name.encode(buf)),+
+ $($name1: self.$name1.encode(buf),)+
+ $($name2: self.$name2.encode(buf),)+
}
}
}
}
define_tables! {
+- nullable:
+ is_intrinsic: Table<DefIndex, bool>,
+ is_macro_rules: Table<DefIndex, bool>,
+ is_type_alias_impl_trait: Table<DefIndex, bool>,
+ attr_flags: Table<DefIndex, AttrFlags>,
+
+- optional:
attributes: Table<DefIndex, LazyArray<ast::Attribute>>,
children: Table<DefIndex, LazyArray<DefIndex>>,
-
opt_def_kind: Table<DefIndex, DefKind>,
visibility: Table<DefIndex, LazyValue<ty::Visibility<DefIndex>>>,
def_span: Table<DefIndex, LazyValue<Span>>,
impl_parent: Table<DefIndex, RawDefId>,
impl_polarity: Table<DefIndex, ty::ImplPolarity>,
constness: Table<DefIndex, hir::Constness>,
- is_intrinsic: Table<DefIndex, ()>,
impl_defaultness: Table<DefIndex, hir::Defaultness>,
// FIXME(eddyb) perhaps compute this on the fly if cheap enough?
coerce_unsized_info: Table<DefIndex, LazyValue<ty::adjustment::CoerceUnsizedInfo>>,
fn_arg_names: Table<DefIndex, LazyArray<Ident>>,
generator_kind: Table<DefIndex, LazyValue<hir::GeneratorKind>>,
trait_def: Table<DefIndex, LazyValue<ty::TraitDef>>,
-
trait_item_def_id: Table<DefIndex, RawDefId>,
inherent_impls: Table<DefIndex, LazyArray<DefIndex>>,
expn_that_defined: Table<DefIndex, LazyValue<ExpnId>>,
def_path_hashes: Table<DefIndex, DefPathHash>,
proc_macro_quoted_spans: Table<usize, LazyValue<Span>>,
generator_diagnostic_data: Table<DefIndex, LazyValue<GeneratorDiagnosticData<'static>>>,
- attr_flags: Table<DefIndex, AttrFlags>,
variant_data: Table<DefIndex, LazyValue<VariantData>>,
assoc_container: Table<DefIndex, ty::AssocItemContainer>,
- // Slot is full when macro is macro_rules.
- macro_rules: Table<DefIndex, ()>,
macro_definition: Table<DefIndex, LazyValue<ast::DelimArgs>>,
proc_macro: Table<DefIndex, MacroKind>,
module_reexports: Table<DefIndex, LazyArray<ModChild>>,
deduced_param_attrs: Table<DefIndex, LazyArray<DeducedParamAttrs>>,
- // Slot is full when opaque is TAIT.
- is_type_alias_impl_trait: Table<DefIndex, ()>,
-
trait_impl_trait_tys: Table<DefIndex, LazyValue<FxHashMap<DefId, Ty<'static>>>>,
}
}
bitflags::bitflags! {
+ #[derive(Default)]
pub struct AttrFlags: u8 {
const MAY_HAVE_DOC_LINKS = 1 << 0;
const IS_DOC_HIDDEN = 1 << 1;
/// but this has no impact on safety.
pub(super) trait FixedSizeEncoding: Default {
/// This should be `[u8; BYTE_LEN]`;
+ /// Cannot use an associated `const BYTE_LEN: usize` instead due to const eval limitations.
type ByteArray;
fn from_bytes(b: &Self::ByteArray) -> Self;
}
}
-impl FixedSizeEncoding for Option<AttrFlags> {
+impl FixedSizeEncoding for AttrFlags {
type ByteArray = [u8; 1];
#[inline]
fn from_bytes(b: &[u8; 1]) -> Self {
- (b[0] != 0).then(|| AttrFlags::from_bits_truncate(b[0]))
+ AttrFlags::from_bits_truncate(b[0])
}
#[inline]
fn write_to_bytes(self, b: &mut [u8; 1]) {
- b[0] = self.map_or(0, |flags| flags.bits())
+ b[0] = self.bits();
}
}
-impl FixedSizeEncoding for Option<()> {
+impl FixedSizeEncoding for bool {
type ByteArray = [u8; 1];
#[inline]
fn from_bytes(b: &[u8; 1]) -> Self {
- (b[0] != 0).then(|| ())
+ b[0] != 0
}
#[inline]
fn write_to_bytes(self, b: &mut [u8; 1]) {
- b[0] = self.is_some() as u8
+ b[0] = self as u8
}
}
}
/// Helper for constructing a table's serialization (also see `Table`).
-pub(super) struct TableBuilder<I: Idx, T>
-where
- Option<T>: FixedSizeEncoding,
-{
- blocks: IndexVec<I, <Option<T> as FixedSizeEncoding>::ByteArray>,
+pub(super) struct TableBuilder<I: Idx, T: FixedSizeEncoding> {
+ blocks: IndexVec<I, T::ByteArray>,
_marker: PhantomData<T>,
}
-impl<I: Idx, T> Default for TableBuilder<I, T>
-where
- Option<T>: FixedSizeEncoding,
-{
+impl<I: Idx, T: FixedSizeEncoding> Default for TableBuilder<I, T> {
fn default() -> Self {
TableBuilder { blocks: Default::default(), _marker: PhantomData }
}
}
-impl<I: Idx, T> TableBuilder<I, T>
+impl<I: Idx, const N: usize, T> TableBuilder<I, Option<T>>
where
- Option<T>: FixedSizeEncoding,
+ Option<T>: FixedSizeEncoding<ByteArray = [u8; N]>,
{
- pub(crate) fn set<const N: usize>(&mut self, i: I, value: T)
- where
- Option<T>: FixedSizeEncoding<ByteArray = [u8; N]>,
- {
+ pub(crate) fn set(&mut self, i: I, value: T) {
+ self.set_nullable(i, Some(value))
+ }
+}
+
+impl<I: Idx, const N: usize, T: FixedSizeEncoding<ByteArray = [u8; N]>> TableBuilder<I, T> {
+ pub(crate) fn set_nullable(&mut self, i: I, value: T) {
// FIXME(eddyb) investigate more compact encodings for sparse tables.
// On the PR @michaelwoerister mentioned:
// > Space requirements could perhaps be optimized by using the HAMT `popcnt`
// > trick (i.e. divide things into buckets of 32 or 64 items and then
// > store bit-masks of which item in each bucket is actually serialized).
self.blocks.ensure_contains_elem(i, || [0; N]);
- Some(value).write_to_bytes(&mut self.blocks[i]);
+ value.write_to_bytes(&mut self.blocks[i]);
}
- pub(crate) fn encode<const N: usize>(&self, buf: &mut FileEncoder) -> LazyTable<I, T>
- where
- Option<T>: FixedSizeEncoding<ByteArray = [u8; N]>,
- {
+ pub(crate) fn encode(&self, buf: &mut FileEncoder) -> LazyTable<I, T> {
let pos = buf.position();
for block in &self.blocks {
buf.emit_raw_bytes(block);
}
}
-impl<I: Idx, T: ParameterizedOverTcx> LazyTable<I, T>
+impl<I: Idx, const N: usize, T: FixedSizeEncoding<ByteArray = [u8; N]> + ParameterizedOverTcx>
+ LazyTable<I, T>
where
- Option<T>: FixedSizeEncoding,
+ for<'tcx> T::Value<'tcx>: FixedSizeEncoding<ByteArray = [u8; N]>,
{
/// Given the metadata, extract out the value at a particular index (if any).
#[inline(never)]
- pub(super) fn get<'a, 'tcx, M: Metadata<'a, 'tcx>, const N: usize>(
- &self,
- metadata: M,
- i: I,
- ) -> Option<T::Value<'tcx>>
- where
- Option<T::Value<'tcx>>: FixedSizeEncoding<ByteArray = [u8; N]>,
- {
+ pub(super) fn get<'a, 'tcx, M: Metadata<'a, 'tcx>>(&self, metadata: M, i: I) -> T::Value<'tcx> {
debug!("LazyTable::lookup: index={:?} len={:?}", i, self.encoded_size);
let start = self.position.get();
let bytes = &metadata.blob()[start..start + self.encoded_size];
let (bytes, []) = bytes.as_chunks::<N>() else { panic!() };
- let bytes = bytes.get(i.index())?;
- FixedSizeEncoding::from_bytes(bytes)
+ match bytes.get(i.index()) {
+ Some(bytes) => FixedSizeEncoding::from_bytes(bytes),
+ None => FixedSizeEncoding::from_bytes(&[0; N]),
+ }
}
/// Size of the table in entries, including possible gaps.
- pub(super) fn size<const N: usize>(&self) -> usize
- where
- for<'tcx> Option<T::Value<'tcx>>: FixedSizeEncoding<ByteArray = [u8; N]>,
- {
+ pub(super) fn size(&self) -> usize {
self.encoded_size / N
}
}
#![feature(min_specialization)]
#![feature(trusted_len)]
#![feature(type_alias_impl_trait)]
+#![feature(strict_provenance)]
#![feature(associated_type_bounds)]
#![feature(rustc_attrs)]
#![feature(control_flow_enum)]
use rustc_macros::HashStable;
use rustc_middle::ty::print::with_no_trimmed_paths;
use rustc_serialize::{Decodable, Encodable};
-use rustc_target::abi::Endian;
+use rustc_target::abi::{AddressSpace, Endian, HasDataLayout};
use crate::mir;
use crate::ty::codec::{TyDecoder, TyEncoder};
_ => bug!("expected vtable, got {:?}", self),
}
}
+
+ /// The address space that this `GlobalAlloc` should be placed in.
+ #[inline]
+ pub fn address_space(&self, cx: &impl HasDataLayout) -> AddressSpace {
+ match self {
+ GlobalAlloc::Function(..) => cx.data_layout().instruction_address_space,
+ GlobalAlloc::Static(..) | GlobalAlloc::Memory(..) | GlobalAlloc::VTable(..) => {
+ AddressSpace::DATA
+ }
+ }
+ }
}
pub(crate) struct AllocMap<'tcx> {
///
/// This query returns an `&Arc` because codegen backends need the value even after the `TyCtxt`
/// has been destroyed.
- query output_filenames(_: ()) -> &'tcx Arc<OutputFilenames> {
+ query output_filenames(_: ()) -> Arc<OutputFilenames> {
feedable
desc { "getting output filenames" }
+ arena_cache
}
/// Do not call this query directly: invoke `normalize` instead.
separate_provide_extern
}
- query permits_uninit_init(key: TyAndLayout<'tcx>) -> bool {
- desc { "checking to see if `{}` permits being left uninit", key.ty }
+ query permits_uninit_init(key: ty::ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool {
+ desc { "checking to see if `{}` permits being left uninit", key.value.ty }
}
- query permits_zero_init(key: TyAndLayout<'tcx>) -> bool {
- desc { "checking to see if `{}` permits being left zeroed", key.ty }
+ query permits_zero_init(key: ty::ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool {
+ desc { "checking to see if `{}` permits being left zeroed", key.value.ty }
}
query compare_impl_const(
use rustc_data_structures::sync::Lrc;
use rustc_errors::{Applicability, Diagnostic};
use rustc_hir as hir;
-use rustc_hir::def_id::{DefId, LocalDefId};
+use rustc_hir::def_id::DefId;
+use rustc_span::def_id::{LocalDefId, CRATE_DEF_ID};
use rustc_span::symbol::Symbol;
use rustc_span::{Span, DUMMY_SP};
use smallvec::SmallVec;
/// (in particular, closures can add new assumptions). See the
/// field `region_obligations` of the `FulfillmentContext` for more
/// information.
- pub body_id: hir::HirId,
+ pub body_id: LocalDefId,
code: InternedObligationCauseCode<'tcx>,
}
#[inline]
pub fn new(
span: Span,
- body_id: hir::HirId,
+ body_id: LocalDefId,
code: ObligationCauseCode<'tcx>,
) -> ObligationCause<'tcx> {
ObligationCause { span, body_id, code: code.into() }
}
- pub fn misc(span: Span, body_id: hir::HirId) -> ObligationCause<'tcx> {
+ pub fn misc(span: Span, body_id: LocalDefId) -> ObligationCause<'tcx> {
ObligationCause::new(span, body_id, MiscObligation)
}
#[inline(always)]
pub fn dummy_with_span(span: Span) -> ObligationCause<'tcx> {
- ObligationCause { span, body_id: hir::CRATE_HIR_ID, code: Default::default() }
+ ObligationCause { span, body_id: CRATE_DEF_ID, code: Default::default() }
}
pub fn span(&self) -> Span {
/// done only on items with the same name.
#[derive(Debug, Clone, PartialEq, HashStable)]
pub struct AssocItems<'tcx> {
- pub(super) items: SortedIndexMultiMap<u32, Symbol, &'tcx ty::AssocItem>,
+ items: SortedIndexMultiMap<u32, Symbol, &'tcx ty::AssocItem>,
}
impl<'tcx> AssocItems<'tcx> {
#![allow(rustc::usage_of_ty_tykind)]
+pub mod tls;
+
use crate::arena::Arena;
use crate::dep_graph::{DepGraph, DepKindStruct};
use crate::infer::canonical::{CanonicalVarInfo, CanonicalVarInfos};
v.0
}
+ /// Given a `DefId` for an `fn`, return all the `dyn` and `impl` traits in its return type and associated alias span when type alias is used
+ pub fn return_type_impl_or_dyn_traits_with_type_alias(
+ self,
+ scope_def_id: LocalDefId,
+ ) -> Option<(Vec<&'tcx hir::Ty<'tcx>>, Span)> {
+ let hir_id = self.hir().local_def_id_to_hir_id(scope_def_id);
+ let mut v = TraitObjectVisitor(vec![], self.hir());
+ // when the return type is a type alias
+ if let Some(hir::FnDecl { output: hir::FnRetTy::Return(hir_output), .. }) = self.hir().fn_decl_by_hir_id(hir_id)
+ && let hir::TyKind::Path(hir::QPath::Resolved(
+ None,
+ hir::Path { res: hir::def::Res::Def(DefKind::TyAlias, def_id), .. }, )) = hir_output.kind
+ && let Some(local_id) = def_id.as_local()
+ && let Some(alias_ty) = self.hir().get_by_def_id(local_id).alias_ty() // it is type alias
+ && let Some(alias_generics) = self.hir().get_by_def_id(local_id).generics()
+ {
+ v.visit_ty(alias_ty);
+ if !v.0.is_empty() {
+ return Some((v.0, alias_generics.span));
+ }
+ }
+ return None;
+ }
+
pub fn return_type_impl_trait(self, scope_def_id: LocalDefId) -> Option<(Ty<'tcx>, Span)> {
// `type_of()` will fail on these (#55796, #86483), so only allow `fn`s or closures.
match self.hir().get_by_def_id(scope_def_id) {
Constness, traits::WellFormedLoc, ImplPolarity, crate::mir::ReturnConstraint,
} }
-pub mod tls {
- use super::{ptr_eq, GlobalCtxt, TyCtxt};
-
- use crate::dep_graph::TaskDepsRef;
- use crate::ty::query;
- use rustc_data_structures::sync::{self, Lock};
- use rustc_errors::Diagnostic;
- use std::mem;
- use thin_vec::ThinVec;
-
- #[cfg(not(parallel_compiler))]
- use std::cell::Cell;
-
- #[cfg(parallel_compiler)]
- use rustc_rayon_core as rayon_core;
-
- /// This is the implicit state of rustc. It contains the current
- /// `TyCtxt` and query. It is updated when creating a local interner or
- /// executing a new query. Whenever there's a `TyCtxt` value available
- /// you should also have access to an `ImplicitCtxt` through the functions
- /// in this module.
- #[derive(Clone)]
- pub struct ImplicitCtxt<'a, 'tcx> {
- /// The current `TyCtxt`.
- pub tcx: TyCtxt<'tcx>,
-
- /// The current query job, if any. This is updated by `JobOwner::start` in
- /// `ty::query::plumbing` when executing a query.
- pub query: Option<query::QueryJobId>,
-
- /// Where to store diagnostics for the current query job, if any.
- /// This is updated by `JobOwner::start` in `ty::query::plumbing` when executing a query.
- pub diagnostics: Option<&'a Lock<ThinVec<Diagnostic>>>,
-
- /// Used to prevent queries from calling too deeply.
- pub query_depth: usize,
-
- /// The current dep graph task. This is used to add dependencies to queries
- /// when executing them.
- pub task_deps: TaskDepsRef<'a>,
- }
-
- impl<'a, 'tcx> ImplicitCtxt<'a, 'tcx> {
- pub fn new(gcx: &'tcx GlobalCtxt<'tcx>) -> Self {
- let tcx = TyCtxt { gcx };
- ImplicitCtxt {
- tcx,
- query: None,
- diagnostics: None,
- query_depth: 0,
- task_deps: TaskDepsRef::Ignore,
- }
- }
- }
-
- /// Sets Rayon's thread-local variable, which is preserved for Rayon jobs
- /// to `value` during the call to `f`. It is restored to its previous value after.
- /// This is used to set the pointer to the new `ImplicitCtxt`.
- #[cfg(parallel_compiler)]
- #[inline]
- fn set_tlv<F: FnOnce() -> R, R>(value: usize, f: F) -> R {
- rayon_core::tlv::with(value, f)
- }
-
- /// Gets Rayon's thread-local variable, which is preserved for Rayon jobs.
- /// This is used to get the pointer to the current `ImplicitCtxt`.
- #[cfg(parallel_compiler)]
- #[inline]
- pub fn get_tlv() -> usize {
- rayon_core::tlv::get()
- }
-
- #[cfg(not(parallel_compiler))]
- thread_local! {
- /// A thread local variable that stores a pointer to the current `ImplicitCtxt`.
- static TLV: Cell<usize> = const { Cell::new(0) };
- }
-
- /// Sets TLV to `value` during the call to `f`.
- /// It is restored to its previous value after.
- /// This is used to set the pointer to the new `ImplicitCtxt`.
- #[cfg(not(parallel_compiler))]
- #[inline]
- fn set_tlv<F: FnOnce() -> R, R>(value: usize, f: F) -> R {
- let old = get_tlv();
- let _reset = rustc_data_structures::OnDrop(move || TLV.with(|tlv| tlv.set(old)));
- TLV.with(|tlv| tlv.set(value));
- f()
- }
-
- /// Gets the pointer to the current `ImplicitCtxt`.
- #[cfg(not(parallel_compiler))]
- #[inline]
- fn get_tlv() -> usize {
- TLV.with(|tlv| tlv.get())
- }
-
- /// Sets `context` as the new current `ImplicitCtxt` for the duration of the function `f`.
- #[inline]
- pub fn enter_context<'a, 'tcx, F, R>(context: &ImplicitCtxt<'a, 'tcx>, f: F) -> R
- where
- F: FnOnce(&ImplicitCtxt<'a, 'tcx>) -> R,
- {
- set_tlv(context as *const _ as usize, || f(&context))
- }
-
- /// Allows access to the current `ImplicitCtxt` in a closure if one is available.
- #[inline]
- pub fn with_context_opt<F, R>(f: F) -> R
- where
- F: for<'a, 'tcx> FnOnce(Option<&ImplicitCtxt<'a, 'tcx>>) -> R,
- {
- let context = get_tlv();
- if context == 0 {
- f(None)
- } else {
- // We could get an `ImplicitCtxt` pointer from another thread.
- // Ensure that `ImplicitCtxt` is `Sync`.
- sync::assert_sync::<ImplicitCtxt<'_, '_>>();
-
- unsafe { f(Some(&*(context as *const ImplicitCtxt<'_, '_>))) }
- }
- }
-
- /// Allows access to the current `ImplicitCtxt`.
- /// Panics if there is no `ImplicitCtxt` available.
- #[inline]
- pub fn with_context<F, R>(f: F) -> R
- where
- F: for<'a, 'tcx> FnOnce(&ImplicitCtxt<'a, 'tcx>) -> R,
- {
- with_context_opt(|opt_context| f(opt_context.expect("no ImplicitCtxt stored in tls")))
- }
-
- /// Allows access to the current `ImplicitCtxt` whose tcx field is the same as the tcx argument
- /// passed in. This means the closure is given an `ImplicitCtxt` with the same `'tcx` lifetime
- /// as the `TyCtxt` passed in.
- /// This will panic if you pass it a `TyCtxt` which is different from the current
- /// `ImplicitCtxt`'s `tcx` field.
- #[inline]
- pub fn with_related_context<'tcx, F, R>(tcx: TyCtxt<'tcx>, f: F) -> R
- where
- F: FnOnce(&ImplicitCtxt<'_, 'tcx>) -> R,
- {
- with_context(|context| unsafe {
- assert!(ptr_eq(context.tcx.gcx, tcx.gcx));
- let context: &ImplicitCtxt<'_, '_> = mem::transmute(context);
- f(context)
- })
- }
-
- /// Allows access to the `TyCtxt` in the current `ImplicitCtxt`.
- /// Panics if there is no `ImplicitCtxt` available.
- #[inline]
- pub fn with<F, R>(f: F) -> R
- where
- F: for<'tcx> FnOnce(TyCtxt<'tcx>) -> R,
- {
- with_context(|context| f(context.tcx))
- }
-
- /// Allows access to the `TyCtxt` in the current `ImplicitCtxt`.
- /// The closure is passed None if there is no `ImplicitCtxt` available.
- #[inline]
- pub fn with_opt<F, R>(f: F) -> R
- where
- F: for<'tcx> FnOnce(Option<TyCtxt<'tcx>>) -> R,
- {
- with_context_opt(|opt_context| f(opt_context.map(|context| context.tcx)))
- }
-}
-
macro_rules! sty_debug_print {
($fmt: expr, $ctxt: expr, $($variant: ident),*) => {{
// Curious inner module to allow variant names to be used as
pub read_only: bool,
}
-// We are comparing types with different invariant lifetimes, so `ptr::eq`
-// won't work for us.
-fn ptr_eq<T, U>(t: *const T, u: *const U) -> bool {
- t as *const () == u as *const ()
-}
-
pub fn provide(providers: &mut ty::query::Providers) {
providers.module_reexports =
|tcx, id| tcx.resolutions(()).reexport_map.get(&id).map(|v| &v[..]);
--- /dev/null
+use super::{GlobalCtxt, TyCtxt};
+
+use crate::dep_graph::TaskDepsRef;
+use crate::ty::query;
+use rustc_data_structures::sync::{self, Lock};
+use rustc_errors::Diagnostic;
+use std::mem;
+use std::ptr;
+use thin_vec::ThinVec;
+
+/// This is the implicit state of rustc. It contains the current
+/// `TyCtxt` and query. It is updated when creating a local interner or
+/// executing a new query. Whenever there's a `TyCtxt` value available
+/// you should also have access to an `ImplicitCtxt` through the functions
+/// in this module.
+#[derive(Clone)]
+pub struct ImplicitCtxt<'a, 'tcx> {
+ /// The current `TyCtxt`.
+ pub tcx: TyCtxt<'tcx>,
+
+ /// The current query job, if any. This is updated by `JobOwner::start` in
+ /// `ty::query::plumbing` when executing a query.
+ pub query: Option<query::QueryJobId>,
+
+ /// Where to store diagnostics for the current query job, if any.
+ /// This is updated by `JobOwner::start` in `ty::query::plumbing` when executing a query.
+ pub diagnostics: Option<&'a Lock<ThinVec<Diagnostic>>>,
+
+ /// Used to prevent queries from calling too deeply.
+ pub query_depth: usize,
+
+ /// The current dep graph task. This is used to add dependencies to queries
+ /// when executing them.
+ pub task_deps: TaskDepsRef<'a>,
+}
+
+impl<'a, 'tcx> ImplicitCtxt<'a, 'tcx> {
+ pub fn new(gcx: &'tcx GlobalCtxt<'tcx>) -> Self {
+ let tcx = TyCtxt { gcx };
+ ImplicitCtxt {
+ tcx,
+ query: None,
+ diagnostics: None,
+ query_depth: 0,
+ task_deps: TaskDepsRef::Ignore,
+ }
+ }
+}
+
+#[cfg(parallel_compiler)]
+mod tlv {
+ use rustc_rayon_core as rayon_core;
+ use std::ptr;
+
+ /// Gets Rayon's thread-local variable, which is preserved for Rayon jobs.
+ /// This is used to get the pointer to the current `ImplicitCtxt`.
+ #[inline]
+ pub(super) fn get_tlv() -> *const () {
+ ptr::from_exposed_addr(rayon_core::tlv::get())
+ }
+
+ /// Sets Rayon's thread-local variable, which is preserved for Rayon jobs
+ /// to `value` during the call to `f`. It is restored to its previous value after.
+ /// This is used to set the pointer to the new `ImplicitCtxt`.
+ #[inline]
+ pub(super) fn with_tlv<F: FnOnce() -> R, R>(value: *const (), f: F) -> R {
+ rayon_core::tlv::with(value.expose_addr(), f)
+ }
+}
+
+#[cfg(not(parallel_compiler))]
+mod tlv {
+ use std::cell::Cell;
+ use std::ptr;
+
+ thread_local! {
+ /// A thread local variable that stores a pointer to the current `ImplicitCtxt`.
+ static TLV: Cell<*const ()> = const { Cell::new(ptr::null()) };
+ }
+
+ /// Gets the pointer to the current `ImplicitCtxt`.
+ #[inline]
+ pub(super) fn get_tlv() -> *const () {
+ TLV.with(|tlv| tlv.get())
+ }
+
+ /// Sets TLV to `value` during the call to `f`.
+ /// It is restored to its previous value after.
+ /// This is used to set the pointer to the new `ImplicitCtxt`.
+ #[inline]
+ pub(super) fn with_tlv<F: FnOnce() -> R, R>(value: *const (), f: F) -> R {
+ let old = get_tlv();
+ let _reset = rustc_data_structures::OnDrop(move || TLV.with(|tlv| tlv.set(old)));
+ TLV.with(|tlv| tlv.set(value));
+ f()
+ }
+}
+
+#[inline]
+fn erase(context: &ImplicitCtxt<'_, '_>) -> *const () {
+ context as *const _ as *const ()
+}
+
+#[inline]
+unsafe fn downcast<'a, 'tcx>(context: *const ()) -> &'a ImplicitCtxt<'a, 'tcx> {
+ &*(context as *const ImplicitCtxt<'a, 'tcx>)
+}
+
+/// Sets `context` as the new current `ImplicitCtxt` for the duration of the function `f`.
+#[inline]
+pub fn enter_context<'a, 'tcx, F, R>(context: &ImplicitCtxt<'a, 'tcx>, f: F) -> R
+where
+ F: FnOnce(&ImplicitCtxt<'a, 'tcx>) -> R,
+{
+ tlv::with_tlv(erase(context), || f(&context))
+}
+
+/// Allows access to the current `ImplicitCtxt` in a closure if one is available.
+#[inline]
+pub fn with_context_opt<F, R>(f: F) -> R
+where
+ F: for<'a, 'tcx> FnOnce(Option<&ImplicitCtxt<'a, 'tcx>>) -> R,
+{
+ let context = tlv::get_tlv();
+ if context.is_null() {
+ f(None)
+ } else {
+ // We could get an `ImplicitCtxt` pointer from another thread.
+ // Ensure that `ImplicitCtxt` is `Sync`.
+ sync::assert_sync::<ImplicitCtxt<'_, '_>>();
+
+ unsafe { f(Some(downcast(context))) }
+ }
+}
+
+/// Allows access to the current `ImplicitCtxt`.
+/// Panics if there is no `ImplicitCtxt` available.
+#[inline]
+pub fn with_context<F, R>(f: F) -> R
+where
+ F: for<'a, 'tcx> FnOnce(&ImplicitCtxt<'a, 'tcx>) -> R,
+{
+ with_context_opt(|opt_context| f(opt_context.expect("no ImplicitCtxt stored in tls")))
+}
+
+/// Allows access to the current `ImplicitCtxt` whose tcx field is the same as the tcx argument
+/// passed in. This means the closure is given an `ImplicitCtxt` with the same `'tcx` lifetime
+/// as the `TyCtxt` passed in.
+/// This will panic if you pass it a `TyCtxt` which is different from the current
+/// `ImplicitCtxt`'s `tcx` field.
+#[inline]
+pub fn with_related_context<'tcx, F, R>(tcx: TyCtxt<'tcx>, f: F) -> R
+where
+ F: FnOnce(&ImplicitCtxt<'_, 'tcx>) -> R,
+{
+ with_context(|context| {
+ // The two gcx have different invariant lifetimes, so we need to erase them for the comparison.
+ assert!(ptr::eq(
+ context.tcx.gcx as *const _ as *const (),
+ tcx.gcx as *const _ as *const ()
+ ));
+
+ let context: &ImplicitCtxt<'_, '_> = unsafe { mem::transmute(context) };
+
+ f(context)
+ })
+}
+
+/// Allows access to the `TyCtxt` in the current `ImplicitCtxt`.
+/// Panics if there is no `ImplicitCtxt` available.
+#[inline]
+pub fn with<F, R>(f: F) -> R
+where
+ F: for<'tcx> FnOnce(TyCtxt<'tcx>) -> R,
+{
+ with_context(|context| f(context.tcx))
+}
+
+/// Allows access to the `TyCtxt` in the current `ImplicitCtxt`.
+/// The closure is passed None if there is no `ImplicitCtxt` available.
+#[inline]
+pub fn with_opt<F, R>(f: F) -> R
+where
+ F: for<'tcx> FnOnce(Option<TyCtxt<'tcx>>) -> R,
+{
+ with_context_opt(|opt_context| f(opt_context.map(|context| context.tcx)))
+}
-use crate::traits::{ObligationCause, ObligationCauseCode};
-use crate::ty::diagnostics::suggest_constraining_type_param;
-use crate::ty::print::{with_forced_trimmed_paths, FmtPrinter, Printer};
+use crate::ty::print::{with_forced_trimmed_paths, FmtPrinter, PrettyPrinter};
use crate::ty::{self, BoundRegionKind, Region, Ty, TyCtxt};
-use rustc_errors::Applicability::{MachineApplicable, MaybeIncorrect};
-use rustc_errors::{pluralize, Diagnostic, MultiSpan};
+use rustc_errors::pluralize;
use rustc_hir as hir;
use rustc_hir::def::{CtorOf, DefKind};
use rustc_hir::def_id::DefId;
-use rustc_span::symbol::{sym, Symbol};
-use rustc_span::{BytePos, Span};
+use rustc_span::symbol::Symbol;
use rustc_target::spec::abi;
-
use std::borrow::Cow;
use std::collections::hash_map::DefaultHasher;
use std::fmt;
-use std::hash::{Hash, Hasher};
+use std::hash::Hash;
+use std::hash::Hasher;
use std::path::PathBuf;
-use super::print::PrettyPrinter;
-
#[derive(Clone, Copy, Debug, PartialEq, Eq, TypeFoldable, TypeVisitable, Lift)]
pub struct ExpectedFound<T> {
pub expected: T,
}
impl<'tcx> TyCtxt<'tcx> {
- pub fn note_and_explain_type_err(
- self,
- diag: &mut Diagnostic,
- err: TypeError<'tcx>,
- cause: &ObligationCause<'tcx>,
- sp: Span,
- body_owner_def_id: DefId,
- ) {
- use self::TypeError::*;
- debug!("note_and_explain_type_err err={:?} cause={:?}", err, cause);
- match err {
- ArgumentSorts(values, _) | Sorts(values) => {
- match (values.expected.kind(), values.found.kind()) {
- (ty::Closure(..), ty::Closure(..)) => {
- diag.note("no two closures, even if identical, have the same type");
- diag.help("consider boxing your closure and/or using it as a trait object");
- }
- (ty::Alias(ty::Opaque, ..), ty::Alias(ty::Opaque, ..)) => {
- // Issue #63167
- diag.note("distinct uses of `impl Trait` result in different opaque types");
- }
- (ty::Float(_), ty::Infer(ty::IntVar(_)))
- if let Ok(
- // Issue #53280
- snippet,
- ) = self.sess.source_map().span_to_snippet(sp) =>
- {
- if snippet.chars().all(|c| c.is_digit(10) || c == '-' || c == '_') {
- diag.span_suggestion(
- sp,
- "use a float literal",
- format!("{}.0", snippet),
- MachineApplicable,
- );
- }
- }
- (ty::Param(expected), ty::Param(found)) => {
- let generics = self.generics_of(body_owner_def_id);
- let e_span = self.def_span(generics.type_param(expected, self).def_id);
- if !sp.contains(e_span) {
- diag.span_label(e_span, "expected type parameter");
- }
- let f_span = self.def_span(generics.type_param(found, self).def_id);
- if !sp.contains(f_span) {
- diag.span_label(f_span, "found type parameter");
- }
- diag.note(
- "a type parameter was expected, but a different one was found; \
- you might be missing a type parameter or trait bound",
- );
- diag.note(
- "for more information, visit \
- https://doc.rust-lang.org/book/ch10-02-traits.html\
- #traits-as-parameters",
- );
- }
- (ty::Alias(ty::Projection, _), ty::Alias(ty::Projection, _)) => {
- diag.note("an associated type was expected, but a different one was found");
- }
- (ty::Param(p), ty::Alias(ty::Projection, proj)) | (ty::Alias(ty::Projection, proj), ty::Param(p))
- if self.def_kind(proj.def_id) != DefKind::ImplTraitPlaceholder =>
- {
- let generics = self.generics_of(body_owner_def_id);
- let p_span = self.def_span(generics.type_param(p, self).def_id);
- if !sp.contains(p_span) {
- diag.span_label(p_span, "this type parameter");
- }
- let hir = self.hir();
- let mut note = true;
- if let Some(generics) = generics
- .type_param(p, self)
- .def_id
- .as_local()
- .map(|id| hir.local_def_id_to_hir_id(id))
- .and_then(|id| self.hir().find_parent(id))
- .as_ref()
- .and_then(|node| node.generics())
- {
- // Synthesize the associated type restriction `Add<Output = Expected>`.
- // FIXME: extract this logic for use in other diagnostics.
- let (trait_ref, assoc_substs) = proj.trait_ref_and_own_substs(self);
- let path =
- self.def_path_str_with_substs(trait_ref.def_id, trait_ref.substs);
- let item_name = self.item_name(proj.def_id);
- let item_args = self.format_generic_args(assoc_substs);
-
- let path = if path.ends_with('>') {
- format!(
- "{}, {}{} = {}>",
- &path[..path.len() - 1],
- item_name,
- item_args,
- p
- )
- } else {
- format!("{}<{}{} = {}>", path, item_name, item_args, p)
- };
- note = !suggest_constraining_type_param(
- self,
- generics,
- diag,
- &format!("{}", proj.self_ty()),
- &path,
- None,
- );
- }
- if note {
- diag.note("you might be missing a type parameter or trait bound");
- }
- }
- (ty::Param(p), ty::Dynamic(..) | ty::Alias(ty::Opaque, ..))
- | (ty::Dynamic(..) | ty::Alias(ty::Opaque, ..), ty::Param(p)) => {
- let generics = self.generics_of(body_owner_def_id);
- let p_span = self.def_span(generics.type_param(p, self).def_id);
- if !sp.contains(p_span) {
- diag.span_label(p_span, "this type parameter");
- }
- diag.help("type parameters must be constrained to match other types");
- if self.sess.teach(&diag.get_code().unwrap()) {
- diag.help(
- "given a type parameter `T` and a method `foo`:
-```
-trait Trait<T> { fn foo(&self) -> T; }
-```
-the only ways to implement method `foo` are:
-- constrain `T` with an explicit type:
-```
-impl Trait<String> for X {
- fn foo(&self) -> String { String::new() }
-}
-```
-- add a trait bound to `T` and call a method on that trait that returns `Self`:
-```
-impl<T: std::default::Default> Trait<T> for X {
- fn foo(&self) -> T { <T as std::default::Default>::default() }
-}
-```
-- change `foo` to return an argument of type `T`:
-```
-impl<T> Trait<T> for X {
- fn foo(&self, x: T) -> T { x }
-}
-```",
- );
- }
- diag.note(
- "for more information, visit \
- https://doc.rust-lang.org/book/ch10-02-traits.html\
- #traits-as-parameters",
- );
- }
- (ty::Param(p), ty::Closure(..) | ty::Generator(..)) => {
- let generics = self.generics_of(body_owner_def_id);
- let p_span = self.def_span(generics.type_param(p, self).def_id);
- if !sp.contains(p_span) {
- diag.span_label(p_span, "this type parameter");
- }
- diag.help(&format!(
- "every closure has a distinct type and so could not always match the \
- caller-chosen type of parameter `{}`",
- p
- ));
- }
- (ty::Param(p), _) | (_, ty::Param(p)) => {
- let generics = self.generics_of(body_owner_def_id);
- let p_span = self.def_span(generics.type_param(p, self).def_id);
- if !sp.contains(p_span) {
- diag.span_label(p_span, "this type parameter");
- }
- }
- (ty::Alias(ty::Projection, proj_ty), _) if self.def_kind(proj_ty.def_id) != DefKind::ImplTraitPlaceholder => {
- self.expected_projection(
- diag,
- proj_ty,
- values,
- body_owner_def_id,
- cause.code(),
- );
- }
- (_, ty::Alias(ty::Projection, proj_ty)) if self.def_kind(proj_ty.def_id) != DefKind::ImplTraitPlaceholder => {
- let msg = format!(
- "consider constraining the associated type `{}` to `{}`",
- values.found, values.expected,
- );
- if !(self.suggest_constraining_opaque_associated_type(
- diag,
- &msg,
- proj_ty,
- values.expected,
- ) || self.suggest_constraint(
- diag,
- &msg,
- body_owner_def_id,
- proj_ty,
- values.expected,
- )) {
- diag.help(&msg);
- diag.note(
- "for more information, visit \
- https://doc.rust-lang.org/book/ch19-03-advanced-traits.html",
- );
- }
- }
- _ => {}
- }
- debug!(
- "note_and_explain_type_err expected={:?} ({:?}) found={:?} ({:?})",
- values.expected,
- values.expected.kind(),
- values.found,
- values.found.kind(),
- );
- }
- CyclicTy(ty) => {
- // Watch out for various cases of cyclic types and try to explain.
- if ty.is_closure() || ty.is_generator() {
- diag.note(
- "closures cannot capture themselves or take themselves as argument;\n\
- this error may be the result of a recent compiler bug-fix,\n\
- see issue #46062 <https://github.com/rust-lang/rust/issues/46062>\n\
- for more information",
- );
- }
- }
- TargetFeatureCast(def_id) => {
- let target_spans =
- self.get_attrs(def_id, sym::target_feature).map(|attr| attr.span);
- diag.note(
- "functions with `#[target_feature]` can only be coerced to `unsafe` function pointers"
- );
- diag.span_labels(target_spans, "`#[target_feature]` added here");
- }
- _ => {}
- }
- }
-
- fn suggest_constraint(
- self,
- diag: &mut Diagnostic,
- msg: &str,
- body_owner_def_id: DefId,
- proj_ty: &ty::AliasTy<'tcx>,
- ty: Ty<'tcx>,
- ) -> bool {
- let assoc = self.associated_item(proj_ty.def_id);
- let (trait_ref, assoc_substs) = proj_ty.trait_ref_and_own_substs(self);
- if let Some(item) = self.hir().get_if_local(body_owner_def_id) {
- if let Some(hir_generics) = item.generics() {
- // Get the `DefId` for the type parameter corresponding to `A` in `<A as T>::Foo`.
- // This will also work for `impl Trait`.
- let def_id = if let ty::Param(param_ty) = proj_ty.self_ty().kind() {
- let generics = self.generics_of(body_owner_def_id);
- generics.type_param(param_ty, self).def_id
- } else {
- return false;
- };
- let Some(def_id) = def_id.as_local() else {
- return false;
- };
-
- // First look in the `where` clause, as this might be
- // `fn foo<T>(x: T) where T: Trait`.
- for pred in hir_generics.bounds_for_param(def_id) {
- if self.constrain_generic_bound_associated_type_structured_suggestion(
- diag,
- &trait_ref,
- pred.bounds,
- &assoc,
- assoc_substs,
- ty,
- msg,
- false,
- ) {
- return true;
- }
- }
- }
- }
- false
- }
-
- /// An associated type was expected and a different type was found.
- ///
- /// We perform a few different checks to see what we can suggest:
- ///
- /// - In the current item, look for associated functions that return the expected type and
- /// suggest calling them. (Not a structured suggestion.)
- /// - If any of the item's generic bounds can be constrained, we suggest constraining the
- /// associated type to the found type.
- /// - If the associated type has a default type and was expected inside of a `trait`, we
- /// mention that this is disallowed.
- /// - If all other things fail, and the error is not because of a mismatch between the `trait`
- /// and the `impl`, we provide a generic `help` to constrain the assoc type or call an assoc
- /// fn that returns the type.
- fn expected_projection(
- self,
- diag: &mut Diagnostic,
- proj_ty: &ty::AliasTy<'tcx>,
- values: ExpectedFound<Ty<'tcx>>,
- body_owner_def_id: DefId,
- cause_code: &ObligationCauseCode<'_>,
- ) {
- let msg = format!(
- "consider constraining the associated type `{}` to `{}`",
- values.expected, values.found
- );
- let body_owner = self.hir().get_if_local(body_owner_def_id);
- let current_method_ident = body_owner.and_then(|n| n.ident()).map(|i| i.name);
-
- // We don't want to suggest calling an assoc fn in a scope where that isn't feasible.
- let callable_scope = matches!(
- body_owner,
- Some(
- hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(..), .. })
- | hir::Node::TraitItem(hir::TraitItem { kind: hir::TraitItemKind::Fn(..), .. })
- | hir::Node::ImplItem(hir::ImplItem { kind: hir::ImplItemKind::Fn(..), .. }),
- )
- );
- let impl_comparison =
- matches!(cause_code, ObligationCauseCode::CompareImplItemObligation { .. });
- let assoc = self.associated_item(proj_ty.def_id);
- if !callable_scope || impl_comparison {
- // We do not want to suggest calling functions when the reason of the
- // type error is a comparison of an `impl` with its `trait` or when the
- // scope is outside of a `Body`.
- } else {
- // If we find a suitable associated function that returns the expected type, we don't
- // want the more general suggestion later in this method about "consider constraining
- // the associated type or calling a method that returns the associated type".
- let point_at_assoc_fn = self.point_at_methods_that_satisfy_associated_type(
- diag,
- assoc.container_id(self),
- current_method_ident,
- proj_ty.def_id,
- values.expected,
- );
- // Possibly suggest constraining the associated type to conform to the
- // found type.
- if self.suggest_constraint(diag, &msg, body_owner_def_id, proj_ty, values.found)
- || point_at_assoc_fn
- {
- return;
- }
- }
-
- self.suggest_constraining_opaque_associated_type(diag, &msg, proj_ty, values.found);
-
- if self.point_at_associated_type(diag, body_owner_def_id, values.found) {
- return;
- }
-
- if !impl_comparison {
- // Generic suggestion when we can't be more specific.
- if callable_scope {
- diag.help(&format!(
- "{} or calling a method that returns `{}`",
- msg, values.expected
- ));
- } else {
- diag.help(&msg);
- }
- diag.note(
- "for more information, visit \
- https://doc.rust-lang.org/book/ch19-03-advanced-traits.html",
- );
- }
- if self.sess.teach(&diag.get_code().unwrap()) {
- diag.help(
- "given an associated type `T` and a method `foo`:
-```
-trait Trait {
-type T;
-fn foo(&self) -> Self::T;
-}
-```
-the only way of implementing method `foo` is to constrain `T` with an explicit associated type:
-```
-impl Trait for X {
-type T = String;
-fn foo(&self) -> Self::T { String::new() }
-}
-```",
- );
- }
- }
-
- /// When the expected `impl Trait` is not defined in the current item, it will come from
- /// a return type. This can occur when dealing with `TryStream` (#71035).
- fn suggest_constraining_opaque_associated_type(
- self,
- diag: &mut Diagnostic,
- msg: &str,
- proj_ty: &ty::AliasTy<'tcx>,
- ty: Ty<'tcx>,
- ) -> bool {
- let assoc = self.associated_item(proj_ty.def_id);
- if let ty::Alias(ty::Opaque, ty::AliasTy { def_id, .. }) = *proj_ty.self_ty().kind() {
- let opaque_local_def_id = def_id.as_local();
- let opaque_hir_ty = if let Some(opaque_local_def_id) = opaque_local_def_id {
- match &self.hir().expect_item(opaque_local_def_id).kind {
- hir::ItemKind::OpaqueTy(opaque_hir_ty) => opaque_hir_ty,
- _ => bug!("The HirId comes from a `ty::Opaque`"),
- }
- } else {
- return false;
- };
-
- let (trait_ref, assoc_substs) = proj_ty.trait_ref_and_own_substs(self);
-
- self.constrain_generic_bound_associated_type_structured_suggestion(
- diag,
- &trait_ref,
- opaque_hir_ty.bounds,
- assoc,
- assoc_substs,
- ty,
- msg,
- true,
- )
- } else {
- false
- }
- }
-
- fn point_at_methods_that_satisfy_associated_type(
- self,
- diag: &mut Diagnostic,
- assoc_container_id: DefId,
- current_method_ident: Option<Symbol>,
- proj_ty_item_def_id: DefId,
- expected: Ty<'tcx>,
- ) -> bool {
- let items = self.associated_items(assoc_container_id);
- // Find all the methods in the trait that could be called to construct the
- // expected associated type.
- // FIXME: consider suggesting the use of associated `const`s.
- let methods: Vec<(Span, String)> = items
- .items
- .iter()
- .filter(|(name, item)| {
- ty::AssocKind::Fn == item.kind && Some(**name) != current_method_ident
- })
- .filter_map(|(_, item)| {
- let method = self.fn_sig(item.def_id);
- match *method.output().skip_binder().kind() {
- ty::Alias(ty::Projection, ty::AliasTy { def_id: item_def_id, .. })
- if item_def_id == proj_ty_item_def_id =>
- {
- Some((
- self.def_span(item.def_id),
- format!("consider calling `{}`", self.def_path_str(item.def_id)),
- ))
- }
- _ => None,
- }
- })
- .collect();
- if !methods.is_empty() {
- // Use a single `help:` to show all the methods in the trait that can
- // be used to construct the expected associated type.
- let mut span: MultiSpan =
- methods.iter().map(|(sp, _)| *sp).collect::<Vec<Span>>().into();
- let msg = format!(
- "{some} method{s} {are} available that return{r} `{ty}`",
- some = if methods.len() == 1 { "a" } else { "some" },
- s = pluralize!(methods.len()),
- are = pluralize!("is", methods.len()),
- r = if methods.len() == 1 { "s" } else { "" },
- ty = expected
- );
- for (sp, label) in methods.into_iter() {
- span.push_span_label(sp, label);
- }
- diag.span_help(span, &msg);
- return true;
- }
- false
- }
-
- fn point_at_associated_type(
- self,
- diag: &mut Diagnostic,
- body_owner_def_id: DefId,
- found: Ty<'tcx>,
- ) -> bool {
- let Some(hir_id) = body_owner_def_id.as_local() else {
- return false;
- };
- let hir_id = self.hir().local_def_id_to_hir_id(hir_id);
- // When `body_owner` is an `impl` or `trait` item, look in its associated types for
- // `expected` and point at it.
- let parent_id = self.hir().get_parent_item(hir_id);
- let item = self.hir().find_by_def_id(parent_id.def_id);
- debug!("expected_projection parent item {:?}", item);
- match item {
- Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Trait(.., items), .. })) => {
- // FIXME: account for `#![feature(specialization)]`
- for item in &items[..] {
- match item.kind {
- hir::AssocItemKind::Type => {
- // FIXME: account for returning some type in a trait fn impl that has
- // an assoc type as a return type (#72076).
- if let hir::Defaultness::Default { has_value: true } =
- self.impl_defaultness(item.id.owner_id)
- {
- if self.type_of(item.id.owner_id) == found {
- diag.span_label(
- item.span,
- "associated type defaults can't be assumed inside the \
- trait defining them",
- );
- return true;
- }
- }
- }
- _ => {}
- }
- }
- }
- Some(hir::Node::Item(hir::Item {
- kind: hir::ItemKind::Impl(hir::Impl { items, .. }),
- ..
- })) => {
- for item in &items[..] {
- if let hir::AssocItemKind::Type = item.kind {
- if self.type_of(item.id.owner_id) == found {
- diag.span_label(item.span, "expected this associated type");
- return true;
- }
- }
- }
- }
- _ => {}
- }
- false
- }
-
- /// Given a slice of `hir::GenericBound`s, if any of them corresponds to the `trait_ref`
- /// requirement, provide a structured suggestion to constrain it to a given type `ty`.
- ///
- /// `is_bound_surely_present` indicates whether we know the bound we're looking for is
- /// inside `bounds`. If that's the case then we can consider `bounds` containing only one
- /// trait bound as the one we're looking for. This can help in cases where the associated
- /// type is defined on a supertrait of the one present in the bounds.
- fn constrain_generic_bound_associated_type_structured_suggestion(
- self,
- diag: &mut Diagnostic,
- trait_ref: &ty::TraitRef<'tcx>,
- bounds: hir::GenericBounds<'_>,
- assoc: &ty::AssocItem,
- assoc_substs: &[ty::GenericArg<'tcx>],
- ty: Ty<'tcx>,
- msg: &str,
- is_bound_surely_present: bool,
- ) -> bool {
- // FIXME: we would want to call `resolve_vars_if_possible` on `ty` before suggesting.
-
- let trait_bounds = bounds.iter().filter_map(|bound| match bound {
- hir::GenericBound::Trait(ptr, hir::TraitBoundModifier::None) => Some(ptr),
- _ => None,
- });
-
- let matching_trait_bounds = trait_bounds
- .clone()
- .filter(|ptr| ptr.trait_ref.trait_def_id() == Some(trait_ref.def_id))
- .collect::<Vec<_>>();
-
- let span = match &matching_trait_bounds[..] {
- &[ptr] => ptr.span,
- &[] if is_bound_surely_present => match &trait_bounds.collect::<Vec<_>>()[..] {
- &[ptr] => ptr.span,
- _ => return false,
- },
- _ => return false,
- };
-
- self.constrain_associated_type_structured_suggestion(
- diag,
- span,
- assoc,
- assoc_substs,
- ty,
- msg,
- )
- }
-
- /// Given a span corresponding to a bound, provide a structured suggestion to set an
- /// associated type to a given type `ty`.
- fn constrain_associated_type_structured_suggestion(
- self,
- diag: &mut Diagnostic,
- span: Span,
- assoc: &ty::AssocItem,
- assoc_substs: &[ty::GenericArg<'tcx>],
- ty: Ty<'tcx>,
- msg: &str,
- ) -> bool {
- if let Ok(has_params) =
- self.sess.source_map().span_to_snippet(span).map(|snippet| snippet.ends_with('>'))
- {
- let (span, sugg) = if has_params {
- let pos = span.hi() - BytePos(1);
- let span = Span::new(pos, pos, span.ctxt(), span.parent());
- (span, format!(", {} = {}", assoc.ident(self), ty))
- } else {
- let item_args = self.format_generic_args(assoc_substs);
- (span.shrink_to_hi(), format!("<{}{} = {}>", assoc.ident(self), item_args, ty))
- };
- diag.span_suggestion_verbose(span, msg, sugg, MaybeIncorrect);
- return true;
- }
- false
- }
-
pub fn short_ty_string(self, ty: Ty<'tcx>) -> (String, Option<PathBuf>) {
let width = self.sess.diagnostic_width();
let length_limit = width.saturating_sub(30);
Err(_) => (regular, None),
}
}
-
- fn format_generic_args(self, args: &[ty::GenericArg<'tcx>]) -> String {
- FmtPrinter::new(self, hir::def::Namespace::TypeNS)
- .path_generic_args(Ok, args)
- .expect("could not write to `String`.")
- .into_buffer()
- }
}
Int(i, signed) => i.to_ty(tcx, signed),
F32 => tcx.types.f32,
F64 => tcx.types.f64,
- Pointer => tcx.mk_mut_ptr(tcx.mk_unit()),
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ Pointer(_) => tcx.mk_mut_ptr(tcx.mk_unit()),
}
}
fn to_int_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> {
match *self {
Int(i, signed) => i.to_ty(tcx, signed),
- Pointer => tcx.types.usize,
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ Pointer(_) => {
+ let signed = false;
+ tcx.data_layout().ptr_sized_integer().to_ty(tcx, signed)
+ }
F32 | F64 => bug!("floats do not have an int type"),
}
}
let tcx = cx.tcx();
let param_env = cx.param_env();
- let addr_space_of_ty = |ty: Ty<'tcx>| {
- if ty.is_fn() { cx.data_layout().instruction_address_space } else { AddressSpace::DATA }
- };
-
- let pointee_info = match *this.ty.kind() {
- ty::RawPtr(mt) if offset.bytes() == 0 => {
- tcx.layout_of(param_env.and(mt.ty)).ok().map(|layout| PointeeInfo {
- size: layout.size,
- align: layout.align.abi,
- safe: None,
- address_space: addr_space_of_ty(mt.ty),
- })
- }
- ty::FnPtr(fn_sig) if offset.bytes() == 0 => {
- tcx.layout_of(param_env.and(tcx.mk_fn_ptr(fn_sig))).ok().map(|layout| PointeeInfo {
- size: layout.size,
- align: layout.align.abi,
- safe: None,
- address_space: cx.data_layout().instruction_address_space,
- })
- }
- ty::Ref(_, ty, mt) if offset.bytes() == 0 => {
- let address_space = addr_space_of_ty(ty);
- let kind = if tcx.sess.opts.optimize == OptLevel::No {
- // Use conservative pointer kind if not optimizing. This saves us the
- // Freeze/Unpin queries, and can save time in the codegen backend (noalias
- // attributes in LLVM have compile-time cost even in unoptimized builds).
- PointerKind::SharedMutable
- } else {
- match mt {
- hir::Mutability::Not => {
- if ty.is_freeze(tcx, cx.param_env()) {
- PointerKind::Frozen
- } else {
- PointerKind::SharedMutable
+ let pointee_info =
+ match *this.ty.kind() {
+ ty::RawPtr(mt) if offset.bytes() == 0 => {
+ tcx.layout_of(param_env.and(mt.ty)).ok().map(|layout| PointeeInfo {
+ size: layout.size,
+ align: layout.align.abi,
+ safe: None,
+ })
+ }
+ ty::FnPtr(fn_sig) if offset.bytes() == 0 => {
+ tcx.layout_of(param_env.and(tcx.mk_fn_ptr(fn_sig))).ok().map(|layout| {
+ PointeeInfo { size: layout.size, align: layout.align.abi, safe: None }
+ })
+ }
+ ty::Ref(_, ty, mt) if offset.bytes() == 0 => {
+ let kind = if tcx.sess.opts.optimize == OptLevel::No {
+ // Use conservative pointer kind if not optimizing. This saves us the
+ // Freeze/Unpin queries, and can save time in the codegen backend (noalias
+ // attributes in LLVM have compile-time cost even in unoptimized builds).
+ PointerKind::SharedMutable
+ } else {
+ match mt {
+ hir::Mutability::Not => {
+ if ty.is_freeze(tcx, cx.param_env()) {
+ PointerKind::Frozen
+ } else {
+ PointerKind::SharedMutable
+ }
}
- }
- hir::Mutability::Mut => {
- // References to self-referential structures should not be considered
- // noalias, as another pointer to the structure can be obtained, that
- // is not based-on the original reference. We consider all !Unpin
- // types to be potentially self-referential here.
- if ty.is_unpin(tcx, cx.param_env()) {
- PointerKind::UniqueBorrowed
- } else {
- PointerKind::UniqueBorrowedPinned
+ hir::Mutability::Mut => {
+ // References to self-referential structures should not be considered
+ // noalias, as another pointer to the structure can be obtained, that
+ // is not based-on the original reference. We consider all !Unpin
+ // types to be potentially self-referential here.
+ if ty.is_unpin(tcx, cx.param_env()) {
+ PointerKind::UniqueBorrowed
+ } else {
+ PointerKind::UniqueBorrowedPinned
+ }
}
}
- }
- };
+ };
- tcx.layout_of(param_env.and(ty)).ok().map(|layout| PointeeInfo {
- size: layout.size,
- align: layout.align.abi,
- safe: Some(kind),
- address_space,
- })
- }
+ tcx.layout_of(param_env.and(ty)).ok().map(|layout| PointeeInfo {
+ size: layout.size,
+ align: layout.align.abi,
+ safe: Some(kind),
+ })
+ }
- _ => {
- let mut data_variant = match this.variants {
- // Within the discriminant field, only the niche itself is
- // always initialized, so we only check for a pointer at its
- // offset.
- //
- // If the niche is a pointer, it's either valid (according
- // to its type), or null (which the niche field's scalar
- // validity range encodes). This allows using
- // `dereferenceable_or_null` for e.g., `Option<&T>`, and
- // this will continue to work as long as we don't start
- // using more niches than just null (e.g., the first page of
- // the address space, or unaligned pointers).
- Variants::Multiple {
- tag_encoding: TagEncoding::Niche { untagged_variant, .. },
- tag_field,
- ..
- } if this.fields.offset(tag_field) == offset => {
- Some(this.for_variant(cx, untagged_variant))
- }
- _ => Some(this),
- };
+ _ => {
+ let mut data_variant = match this.variants {
+ // Within the discriminant field, only the niche itself is
+ // always initialized, so we only check for a pointer at its
+ // offset.
+ //
+ // If the niche is a pointer, it's either valid (according
+ // to its type), or null (which the niche field's scalar
+ // validity range encodes). This allows using
+ // `dereferenceable_or_null` for e.g., `Option<&T>`, and
+ // this will continue to work as long as we don't start
+ // using more niches than just null (e.g., the first page of
+ // the address space, or unaligned pointers).
+ Variants::Multiple {
+ tag_encoding: TagEncoding::Niche { untagged_variant, .. },
+ tag_field,
+ ..
+ } if this.fields.offset(tag_field) == offset => {
+ Some(this.for_variant(cx, untagged_variant))
+ }
+ _ => Some(this),
+ };
- if let Some(variant) = data_variant {
- // We're not interested in any unions.
- if let FieldsShape::Union(_) = variant.fields {
- data_variant = None;
+ if let Some(variant) = data_variant {
+ // We're not interested in any unions.
+ if let FieldsShape::Union(_) = variant.fields {
+ data_variant = None;
+ }
}
- }
- let mut result = None;
-
- if let Some(variant) = data_variant {
- let ptr_end = offset + Pointer.size(cx);
- for i in 0..variant.fields.count() {
- let field_start = variant.fields.offset(i);
- if field_start <= offset {
- let field = variant.field(cx, i);
- result = field.to_result().ok().and_then(|field| {
- if ptr_end <= field_start + field.size {
- // We found the right field, look inside it.
- let field_info =
- field.pointee_info_at(cx, offset - field_start);
- field_info
- } else {
- None
+ let mut result = None;
+
+ if let Some(variant) = data_variant {
+ // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
+ // (requires passing in the expected address space from the caller)
+ let ptr_end = offset + Pointer(AddressSpace::DATA).size(cx);
+ for i in 0..variant.fields.count() {
+ let field_start = variant.fields.offset(i);
+ if field_start <= offset {
+ let field = variant.field(cx, i);
+ result = field.to_result().ok().and_then(|field| {
+ if ptr_end <= field_start + field.size {
+ // We found the right field, look inside it.
+ let field_info =
+ field.pointee_info_at(cx, offset - field_start);
+ field_info
+ } else {
+ None
+ }
+ });
+ if result.is_some() {
+ break;
}
- });
- if result.is_some() {
- break;
}
}
}
- }
- // FIXME(eddyb) This should be for `ptr::Unique<T>`, not `Box<T>`.
- if let Some(ref mut pointee) = result {
- if let ty::Adt(def, _) = this.ty.kind() {
- if def.is_box() && offset.bytes() == 0 {
- pointee.safe = Some(PointerKind::UniqueOwned);
+ // FIXME(eddyb) This should be for `ptr::Unique<T>`, not `Box<T>`.
+ if let Some(ref mut pointee) = result {
+ if let ty::Adt(def, _) = this.ty.kind() {
+ if def.is_box() && offset.bytes() == 0 {
+ pointee.safe = Some(PointerKind::UniqueOwned);
+ }
}
}
- }
- result
- }
- };
+ result
+ }
+ };
debug!(
"pointee_info_at (offset={:?}, type kind: {:?}) => {:?}",
ident
}
+ // FIXME(vincenzoapalzzo): move the HirId to a LocalDefId
pub fn adjust_ident_and_get_scope(
self,
mut ident: Ident,
self.opt_def_kind(def_id)
.unwrap_or_else(|| bug!("def_kind: unsupported node: {:?}", def_id))
}
+
+ pub fn bound_type_of(self, def_id: impl IntoQueryParam<DefId>) -> ty::EarlyBinder<Ty<'tcx>> {
+ ty::EarlyBinder(self.type_of(def_id))
+ }
}
impl<'tcx> TyCtxtAt<'tcx> {
self.opt_def_kind(def_id)
.unwrap_or_else(|| bug!("def_kind: unsupported node: {:?}", def_id))
}
+
+ pub fn bound_type_of(self, def_id: impl IntoQueryParam<DefId>) -> ty::EarlyBinder<Ty<'tcx>> {
+ ty::EarlyBinder(self.type_of(def_id))
+ }
}
use rustc_data_structures::functor::IdFunctor;
use rustc_hir::def::Namespace;
use rustc_index::vec::{Idx, IndexVec};
+use rustc_target::abi::TyAndLayout;
use std::fmt;
use std::mem::ManuallyDrop;
self.substs.visit_with(visitor)
}
}
+
+impl<'tcx> TypeVisitable<'tcx> for TyAndLayout<'tcx, Ty<'tcx>> {
+ fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
+ visitor.visit_ty(self.ty)
+ }
+}
use crate::middle::codegen_fn_attrs::CodegenFnAttrFlags;
use crate::mir;
use crate::ty::layout::IntegerExt;
-use crate::ty::query::TyCtxtAt;
use crate::ty::{
self, DefIdTree, FallibleTypeFolder, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable,
TypeVisitable,
if visitor.found_recursion { Err(expanded_type) } else { Ok(expanded_type) }
}
- pub fn bound_type_of(self, def_id: DefId) -> ty::EarlyBinder<Ty<'tcx>> {
- ty::EarlyBinder(self.type_of(def_id))
- }
-
pub fn bound_return_position_impl_trait_in_trait_tys(
self,
def_id: DefId,
}
}
-impl<'tcx> TyCtxtAt<'tcx> {
- pub fn bound_type_of(self, def_id: DefId) -> ty::EarlyBinder<Ty<'tcx>> {
- ty::EarlyBinder(self.type_of(def_id))
- }
-}
-
struct OpaqueTypeExpander<'tcx> {
// Contains the DefIds of the opaque types that are currently being
// expanded. When we expand an opaque type we insert the DefId of
@call("mir_storage_dead", args) => {
Ok(StatementKind::StorageDead(self.parse_local(args[0])?))
},
+ @call("mir_deinit", args) => {
+ Ok(StatementKind::Deinit(Box::new(self.parse_place(args[0])?)))
+ },
@call("mir_retag", args) => {
Ok(StatementKind::Retag(RetagKind::Default, Box::new(self.parse_place(args[0])?)))
},
fn parse_rvalue(&self, expr_id: ExprId) -> PResult<Rvalue<'tcx>> {
parse_by_kind!(self, expr_id, _, "rvalue",
@call("mir_discriminant", args) => self.parse_place(args[0]).map(Rvalue::Discriminant),
+ @call("mir_checked", args) => {
+ parse_by_kind!(self, args[0], _, "binary op",
+ ExprKind::Binary { op, lhs, rhs } => Ok(Rvalue::CheckedBinaryOp(
+ *op, Box::new((self.parse_operand(*lhs)?, self.parse_operand(*rhs)?))
+ )),
+ )
+ },
+ @call("mir_len", args) => Ok(Rvalue::Len(self.parse_place(args[0])?)),
ExprKind::Borrow { borrow_kind, arg } => Ok(
Rvalue::Ref(self.tcx.lifetimes.re_erased, *borrow_kind, self.parse_place(*arg)?)
),
ExprKind::AddressOf { mutability, arg } => Ok(
Rvalue::AddressOf(*mutability, self.parse_place(*arg)?)
),
+ ExprKind::Binary { op, lhs, rhs } => Ok(
+ Rvalue::BinaryOp(*op, Box::new((self.parse_operand(*lhs)?, self.parse_operand(*rhs)?)))
+ ),
+ ExprKind::Unary { op, arg } => Ok(
+ Rvalue::UnaryOp(*op, self.parse_operand(*arg)?)
+ ),
+ ExprKind::Repeat { value, count } => Ok(
+ Rvalue::Repeat(self.parse_operand(*value)?, *count)
+ ),
_ => self.parse_operand(expr_id).map(Rvalue::Use),
)
}
pub struct MultipleMutBorrows {
#[primary_span]
pub span: Span,
- #[label]
- pub binding_span: Span,
#[subdiagnostic]
- pub occurences: Vec<MultipleMutBorrowOccurence>,
- pub name: Ident,
+ pub occurences: Vec<Conflict>,
+}
+
+#[derive(Diagnostic)]
+#[diag(mir_build_already_borrowed)]
+pub struct AlreadyBorrowed {
+ #[primary_span]
+ pub span: Span,
+ #[subdiagnostic]
+ pub occurences: Vec<Conflict>,
+}
+
+#[derive(Diagnostic)]
+#[diag(mir_build_already_mut_borrowed)]
+pub struct AlreadyMutBorrowed {
+ #[primary_span]
+ pub span: Span,
+ #[subdiagnostic]
+ pub occurences: Vec<Conflict>,
+}
+
+#[derive(Diagnostic)]
+#[diag(mir_build_moved_while_borrowed)]
+pub struct MovedWhileBorrowed {
+ #[primary_span]
+ pub span: Span,
+ #[subdiagnostic]
+ pub occurences: Vec<Conflict>,
}
#[derive(Subdiagnostic)]
-pub enum MultipleMutBorrowOccurence {
- #[label(mutable_borrow)]
- Mutable {
+pub enum Conflict {
+ #[label(mir_build_mutable_borrow)]
+ Mut {
#[primary_span]
span: Span,
- name_mut: Ident,
+ name: Ident,
},
- #[label(immutable_borrow)]
- Immutable {
+ #[label(mir_build_borrow)]
+ Ref {
#[primary_span]
span: Span,
- name_immut: Ident,
+ name: Ident,
},
- #[label(moved)]
+ #[label(mir_build_moved)]
Moved {
#[primary_span]
span: Span,
- name_moved: Ident,
+ name: Ident,
},
}
// Don't report arm reachability of desugared `match $iter.into_iter() { iter => .. }`
// when the iterator is an uninhabited type. unreachable_code will trigger instead.
hir::MatchSource::ForLoopDesugar if arms.len() == 1 => {}
- hir::MatchSource::ForLoopDesugar | hir::MatchSource::Normal => {
- report_arm_reachability(&cx, &report)
- }
+ hir::MatchSource::ForLoopDesugar
+ | hir::MatchSource::Normal
+ | hir::MatchSource::FormatArgs => report_arm_reachability(&cx, &report),
// Unreachable patterns in try and await expressions occur when one of
// the arms are an uninhabited type. Which is OK.
hir::MatchSource::AwaitDesugar | hir::MatchSource::TryDesugar => {}
sub.each_binding(|_, hir_id, span, name| {
match typeck_results.extract_binding_mode(sess, hir_id, span) {
Some(ty::BindByReference(mut_inner)) => match (mut_outer, mut_inner) {
- (Mutability::Not, Mutability::Not) => {} // Both sides are `ref`.
- (Mutability::Mut, Mutability::Mut) => conflicts_mut_mut.push((span, name)), // 2x `ref mut`.
- _ => conflicts_mut_ref.push((span, name)), // `ref` + `ref mut` in either direction.
+ // Both sides are `ref`.
+ (Mutability::Not, Mutability::Not) => {}
+ // 2x `ref mut`.
+ (Mutability::Mut, Mutability::Mut) => {
+ conflicts_mut_mut.push(Conflict::Mut { span, name })
+ }
+ (Mutability::Not, Mutability::Mut) => {
+ conflicts_mut_ref.push(Conflict::Mut { span, name })
+ }
+ (Mutability::Mut, Mutability::Not) => {
+ conflicts_mut_ref.push(Conflict::Ref { span, name })
+ }
},
Some(ty::BindByValue(_)) if is_binding_by_move(cx, hir_id) => {
- conflicts_move.push((span, name)) // `ref mut?` + by-move conflict.
+ conflicts_move.push(Conflict::Moved { span, name }) // `ref mut?` + by-move conflict.
}
Some(ty::BindByValue(_)) | None => {} // `ref mut?` + by-copy is fine.
}
});
+ let report_mut_mut = !conflicts_mut_mut.is_empty();
+ let report_mut_ref = !conflicts_mut_ref.is_empty();
+ let report_move_conflict = !conflicts_move.is_empty();
+
+ let mut occurences = match mut_outer {
+ Mutability::Mut => vec![Conflict::Mut { span: binding_span, name }],
+ Mutability::Not => vec![Conflict::Ref { span: binding_span, name }],
+ };
+ occurences.extend(conflicts_mut_mut);
+ occurences.extend(conflicts_mut_ref);
+ occurences.extend(conflicts_move);
+
// Report errors if any.
- if !conflicts_mut_mut.is_empty() {
+ if report_mut_mut {
// Report mutability conflicts for e.g. `ref mut x @ Some(ref mut y)`.
- let mut occurences = vec![];
-
- for (span, name_mut) in conflicts_mut_mut {
- occurences.push(MultipleMutBorrowOccurence::Mutable { span, name_mut });
- }
- for (span, name_immut) in conflicts_mut_ref {
- occurences.push(MultipleMutBorrowOccurence::Immutable { span, name_immut });
- }
- for (span, name_moved) in conflicts_move {
- occurences.push(MultipleMutBorrowOccurence::Moved { span, name_moved });
- }
- sess.emit_err(MultipleMutBorrows { span: pat.span, binding_span, occurences, name });
- } else if !conflicts_mut_ref.is_empty() {
+ sess.emit_err(MultipleMutBorrows { span: pat.span, occurences });
+ } else if report_mut_ref {
// Report mutability conflicts for e.g. `ref x @ Some(ref mut y)` or the converse.
- let (primary, also) = match mut_outer {
- Mutability::Mut => ("mutable", "immutable"),
- Mutability::Not => ("immutable", "mutable"),
+ match mut_outer {
+ Mutability::Mut => {
+ sess.emit_err(AlreadyMutBorrowed { span: pat.span, occurences });
+ }
+ Mutability::Not => {
+ sess.emit_err(AlreadyBorrowed { span: pat.span, occurences });
+ }
};
- let msg =
- format!("cannot borrow value as {} because it is also borrowed as {}", also, primary);
- let mut err = sess.struct_span_err(pat.span, &msg);
- err.span_label(binding_span, format!("{} borrow, by `{}`, occurs here", primary, name));
- for (span, name) in conflicts_mut_ref {
- err.span_label(span, format!("{} borrow, by `{}`, occurs here", also, name));
- }
- for (span, name) in conflicts_move {
- err.span_label(span, format!("also moved into `{}` here", name));
- }
- err.emit();
- } else if !conflicts_move.is_empty() {
+ } else if report_move_conflict {
// Report by-ref and by-move conflicts, e.g. `ref x @ y`.
- let mut err =
- sess.struct_span_err(pat.span, "cannot move out of value because it is borrowed");
- err.span_label(binding_span, format!("value borrowed, by `{}`, here", name));
- for (span, name) in conflicts_move {
- err.span_label(span, format!("value moved into `{}` here", name));
- }
- err.emit();
+ sess.emit_err(MovedWhileBorrowed { span: pat.span, occurences });
}
}
use rustc_middle::thir::{FieldPat, Pat, PatKind};
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_session::lint;
+use rustc_span::def_id::CRATE_DEF_ID;
use rustc_span::Span;
use rustc_trait_selection::traits::predicate_for_trait_def;
use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt;
// using `PartialEq::eq` in this scenario in the past.)
let partial_eq_trait_id =
self.tcx().require_lang_item(hir::LangItem::PartialEq, Some(self.span));
+ let def_id = self.tcx().hir().opt_local_def_id(self.id).unwrap_or(CRATE_DEF_ID);
let obligation: PredicateObligation<'_> = predicate_for_trait_def(
self.tcx(),
self.param_env,
- ObligationCause::misc(self.span, self.id),
+ ObligationCause::misc(self.span, def_id),
partial_eq_trait_id,
0,
[ty, ty],
}
impl<'tcx> Visitor<'tcx> for ConstGotoOptimizationFinder<'_, 'tcx> {
+ fn visit_basic_block_data(&mut self, block: BasicBlock, data: &BasicBlockData<'tcx>) {
+ if data.is_cleanup {
+ // Because of the restrictions around control flow in cleanup blocks, we don't perform
+ // this optimization at all in such blocks.
+ return;
+ }
+ self.super_basic_block_data(block, data);
+ }
+
fn visit_terminator(&mut self, terminator: &Terminator<'tcx>, location: Location) {
let _: Option<_> = try {
let target = terminator.kind.as_goto()?;
BinOp, Body, Constant, ConstantKind, LocalDecls, Operand, Place, ProjectionElem, Rvalue,
SourceInfo, Statement, StatementKind, Terminator, TerminatorKind, UnOp,
};
-use rustc_middle::ty::{self, TyCtxt};
+use rustc_middle::ty::{self, layout::TyAndLayout, ParamEnv, ParamEnvAnd, SubstsRef, Ty, TyCtxt};
+use rustc_span::symbol::{sym, Symbol};
pub struct InstCombine;
}
fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
- let ctx = InstCombineContext { tcx, local_decls: &body.local_decls };
+ let ctx = InstCombineContext {
+ tcx,
+ local_decls: &body.local_decls,
+ param_env: tcx.param_env_reveal_all_normalized(body.source.def_id()),
+ };
for block in body.basic_blocks.as_mut() {
for statement in block.statements.iter_mut() {
match statement.kind {
&mut block.terminator.as_mut().unwrap(),
&mut block.statements,
);
+ ctx.combine_intrinsic_assert(
+ &mut block.terminator.as_mut().unwrap(),
+ &mut block.statements,
+ );
}
}
}
struct InstCombineContext<'tcx, 'a> {
tcx: TyCtxt<'tcx>,
local_decls: &'a LocalDecls<'tcx>,
+ param_env: ParamEnv<'tcx>,
}
impl<'tcx> InstCombineContext<'tcx, '_> {
});
terminator.kind = TerminatorKind::Goto { target: destination_block };
}
+
+ fn combine_intrinsic_assert(
+ &self,
+ terminator: &mut Terminator<'tcx>,
+ _statements: &mut Vec<Statement<'tcx>>,
+ ) {
+ let TerminatorKind::Call { func, target, .. } = &mut terminator.kind else { return; };
+ let Some(target_block) = target else { return; };
+ let func_ty = func.ty(self.local_decls, self.tcx);
+ let Some((intrinsic_name, substs)) = resolve_rust_intrinsic(self.tcx, func_ty) else {
+ return;
+ };
+ // The intrinsics we are interested in have one generic parameter
+ if substs.is_empty() {
+ return;
+ }
+ let ty = substs.type_at(0);
+
+ // Check this is a foldable intrinsic before we query the layout of our generic parameter
+ let Some(assert_panics) = intrinsic_assert_panics(intrinsic_name) else { return; };
+ let Ok(layout) = self.tcx.layout_of(self.param_env.and(ty)) else { return; };
+ if assert_panics(self.tcx, self.param_env.and(layout)) {
+ // If we know the assert panics, indicate to later opts that the call diverges
+ *target = None;
+ } else {
+ // If we know the assert does not panic, turn the call into a Goto
+ terminator.kind = TerminatorKind::Goto { target: *target_block };
+ }
+ }
+}
+
+fn intrinsic_assert_panics<'tcx>(
+ intrinsic_name: Symbol,
+) -> Option<fn(TyCtxt<'tcx>, ParamEnvAnd<'tcx, TyAndLayout<'tcx>>) -> bool> {
+ fn inhabited_predicate<'tcx>(
+ _tcx: TyCtxt<'tcx>,
+ param_env_and_layout: ParamEnvAnd<'tcx, TyAndLayout<'tcx>>,
+ ) -> bool {
+ let (_param_env, layout) = param_env_and_layout.into_parts();
+ layout.abi.is_uninhabited()
+ }
+ fn zero_valid_predicate<'tcx>(
+ tcx: TyCtxt<'tcx>,
+ param_env_and_layout: ParamEnvAnd<'tcx, TyAndLayout<'tcx>>,
+ ) -> bool {
+ !tcx.permits_zero_init(param_env_and_layout)
+ }
+ fn mem_uninitialized_valid_predicate<'tcx>(
+ tcx: TyCtxt<'tcx>,
+ param_env_and_layout: ParamEnvAnd<'tcx, TyAndLayout<'tcx>>,
+ ) -> bool {
+ !tcx.permits_uninit_init(param_env_and_layout)
+ }
+
+ match intrinsic_name {
+ sym::assert_inhabited => Some(inhabited_predicate),
+ sym::assert_zero_valid => Some(zero_valid_predicate),
+ sym::assert_mem_uninitialized_valid => Some(mem_uninitialized_valid_predicate),
+ _ => None,
+ }
+}
+
+fn resolve_rust_intrinsic<'tcx>(
+ tcx: TyCtxt<'tcx>,
+ func_ty: Ty<'tcx>,
+) -> Option<(Symbol, SubstsRef<'tcx>)> {
+ if let ty::FnDef(def_id, substs) = *func_ty.kind() {
+ if tcx.is_intrinsic(def_id) {
+ return Some((tcx.item_name(def_id), substs));
+ }
+ }
+ None
}
pub mod simplify;
mod simplify_branches;
mod simplify_comparison_integral;
-mod simplify_try;
mod sroa;
mod uninhabited_enum_branching;
mod unreachable_prop;
&o1(simplify_branches::SimplifyConstCondition::new("after-const-prop")),
&early_otherwise_branch::EarlyOtherwiseBranch,
&simplify_comparison_integral::SimplifyComparisonIntegral,
- &simplify_try::SimplifyArmIdentity,
- &simplify_try::SimplifyBranchSame,
&dead_store_elimination::DeadStoreElimination,
&dest_prop::DestinationPropagation,
&o1(simplify_branches::SimplifyConstCondition::new("final")),
+++ /dev/null
-//! The general point of the optimizations provided here is to simplify something like:
-//!
-//! ```rust
-//! # fn foo<T, E>(x: Result<T, E>) -> Result<T, E> {
-//! match x {
-//! Ok(x) => Ok(x),
-//! Err(x) => Err(x)
-//! }
-//! # }
-//! ```
-//!
-//! into just `x`.
-
-use crate::{simplify, MirPass};
-use itertools::Itertools as _;
-use rustc_index::{bit_set::BitSet, vec::IndexVec};
-use rustc_middle::mir::visit::{NonUseContext, PlaceContext, Visitor};
-use rustc_middle::mir::*;
-use rustc_middle::ty::{self, List, Ty, TyCtxt};
-use rustc_target::abi::VariantIdx;
-use std::iter::{once, Enumerate, Peekable};
-use std::slice::Iter;
-
-/// Simplifies arms of form `Variant(x) => Variant(x)` to just a move.
-///
-/// This is done by transforming basic blocks where the statements match:
-///
-/// ```ignore (MIR)
-/// _LOCAL_TMP = ((_LOCAL_1 as Variant ).FIELD: TY );
-/// _TMP_2 = _LOCAL_TMP;
-/// ((_LOCAL_0 as Variant).FIELD: TY) = move _TMP_2;
-/// discriminant(_LOCAL_0) = VAR_IDX;
-/// ```
-///
-/// into:
-///
-/// ```ignore (MIR)
-/// _LOCAL_0 = move _LOCAL_1
-/// ```
-pub struct SimplifyArmIdentity;
-
-#[derive(Debug)]
-struct ArmIdentityInfo<'tcx> {
- /// Storage location for the variant's field
- local_temp_0: Local,
- /// Storage location holding the variant being read from
- local_1: Local,
- /// The variant field being read from
- vf_s0: VarField<'tcx>,
- /// Index of the statement which loads the variant being read
- get_variant_field_stmt: usize,
-
- /// Tracks each assignment to a temporary of the variant's field
- field_tmp_assignments: Vec<(Local, Local)>,
-
- /// Storage location holding the variant's field that was read from
- local_tmp_s1: Local,
- /// Storage location holding the enum that we are writing to
- local_0: Local,
- /// The variant field being written to
- vf_s1: VarField<'tcx>,
-
- /// Storage location that the discriminant is being written to
- set_discr_local: Local,
- /// The variant being written
- set_discr_var_idx: VariantIdx,
-
- /// Index of the statement that should be overwritten as a move
- stmt_to_overwrite: usize,
- /// SourceInfo for the new move
- source_info: SourceInfo,
-
- /// Indices of matching Storage{Live,Dead} statements encountered.
- /// (StorageLive index,, StorageDead index, Local)
- storage_stmts: Vec<(usize, usize, Local)>,
-
- /// The statements that should be removed (turned into nops)
- stmts_to_remove: Vec<usize>,
-
- /// Indices of debug variables that need to be adjusted to point to
- // `{local_0}.{dbg_projection}`.
- dbg_info_to_adjust: Vec<usize>,
-
- /// The projection used to rewrite debug info.
- dbg_projection: &'tcx List<PlaceElem<'tcx>>,
-}
-
-fn get_arm_identity_info<'a, 'tcx>(
- stmts: &'a [Statement<'tcx>],
- locals_count: usize,
- debug_info: &'a [VarDebugInfo<'tcx>],
-) -> Option<ArmIdentityInfo<'tcx>> {
- // This can't possibly match unless there are at least 3 statements in the block
- // so fail fast on tiny blocks.
- if stmts.len() < 3 {
- return None;
- }
-
- let mut tmp_assigns = Vec::new();
- let mut nop_stmts = Vec::new();
- let mut storage_stmts = Vec::new();
- let mut storage_live_stmts = Vec::new();
- let mut storage_dead_stmts = Vec::new();
-
- type StmtIter<'a, 'tcx> = Peekable<Enumerate<Iter<'a, Statement<'tcx>>>>;
-
- fn is_storage_stmt(stmt: &Statement<'_>) -> bool {
- matches!(stmt.kind, StatementKind::StorageLive(_) | StatementKind::StorageDead(_))
- }
-
- /// Eats consecutive Statements which match `test`, performing the specified `action` for each.
- /// The iterator `stmt_iter` is not advanced if none were matched.
- fn try_eat<'a, 'tcx>(
- stmt_iter: &mut StmtIter<'a, 'tcx>,
- test: impl Fn(&'a Statement<'tcx>) -> bool,
- mut action: impl FnMut(usize, &'a Statement<'tcx>),
- ) {
- while stmt_iter.peek().map_or(false, |(_, stmt)| test(stmt)) {
- let (idx, stmt) = stmt_iter.next().unwrap();
-
- action(idx, stmt);
- }
- }
-
- /// Eats consecutive `StorageLive` and `StorageDead` Statements.
- /// The iterator `stmt_iter` is not advanced if none were found.
- fn try_eat_storage_stmts(
- stmt_iter: &mut StmtIter<'_, '_>,
- storage_live_stmts: &mut Vec<(usize, Local)>,
- storage_dead_stmts: &mut Vec<(usize, Local)>,
- ) {
- try_eat(stmt_iter, is_storage_stmt, |idx, stmt| {
- if let StatementKind::StorageLive(l) = stmt.kind {
- storage_live_stmts.push((idx, l));
- } else if let StatementKind::StorageDead(l) = stmt.kind {
- storage_dead_stmts.push((idx, l));
- }
- })
- }
-
- fn is_tmp_storage_stmt(stmt: &Statement<'_>) -> bool {
- use rustc_middle::mir::StatementKind::Assign;
- if let Assign(box (place, Rvalue::Use(Operand::Copy(p) | Operand::Move(p)))) = &stmt.kind {
- place.as_local().is_some() && p.as_local().is_some()
- } else {
- false
- }
- }
-
- /// Eats consecutive `Assign` Statements.
- // The iterator `stmt_iter` is not advanced if none were found.
- fn try_eat_assign_tmp_stmts(
- stmt_iter: &mut StmtIter<'_, '_>,
- tmp_assigns: &mut Vec<(Local, Local)>,
- nop_stmts: &mut Vec<usize>,
- ) {
- try_eat(stmt_iter, is_tmp_storage_stmt, |idx, stmt| {
- use rustc_middle::mir::StatementKind::Assign;
- if let Assign(box (place, Rvalue::Use(Operand::Copy(p) | Operand::Move(p)))) =
- &stmt.kind
- {
- tmp_assigns.push((place.as_local().unwrap(), p.as_local().unwrap()));
- nop_stmts.push(idx);
- }
- })
- }
-
- fn find_storage_live_dead_stmts_for_local(
- local: Local,
- stmts: &[Statement<'_>],
- ) -> Option<(usize, usize)> {
- trace!("looking for {:?}", local);
- let mut storage_live_stmt = None;
- let mut storage_dead_stmt = None;
- for (idx, stmt) in stmts.iter().enumerate() {
- if stmt.kind == StatementKind::StorageLive(local) {
- storage_live_stmt = Some(idx);
- } else if stmt.kind == StatementKind::StorageDead(local) {
- storage_dead_stmt = Some(idx);
- }
- }
-
- Some((storage_live_stmt?, storage_dead_stmt.unwrap_or(usize::MAX)))
- }
-
- // Try to match the expected MIR structure with the basic block we're processing.
- // We want to see something that looks like:
- // ```
- // (StorageLive(_) | StorageDead(_));*
- // _LOCAL_INTO = ((_LOCAL_FROM as Variant).FIELD: TY);
- // (StorageLive(_) | StorageDead(_));*
- // (tmp_n+1 = tmp_n);*
- // (StorageLive(_) | StorageDead(_));*
- // (tmp_n+1 = tmp_n);*
- // ((LOCAL_FROM as Variant).FIELD: TY) = move tmp;
- // discriminant(LOCAL_FROM) = VariantIdx;
- // (StorageLive(_) | StorageDead(_));*
- // ```
- let mut stmt_iter = stmts.iter().enumerate().peekable();
-
- try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts);
-
- let (get_variant_field_stmt, stmt) = stmt_iter.next()?;
- let (local_tmp_s0, local_1, vf_s0, dbg_projection) = match_get_variant_field(stmt)?;
-
- try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts);
-
- try_eat_assign_tmp_stmts(&mut stmt_iter, &mut tmp_assigns, &mut nop_stmts);
-
- try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts);
-
- try_eat_assign_tmp_stmts(&mut stmt_iter, &mut tmp_assigns, &mut nop_stmts);
-
- let (idx, stmt) = stmt_iter.next()?;
- let (local_tmp_s1, local_0, vf_s1) = match_set_variant_field(stmt)?;
- nop_stmts.push(idx);
-
- let (idx, stmt) = stmt_iter.next()?;
- let (set_discr_local, set_discr_var_idx) = match_set_discr(stmt)?;
- let discr_stmt_source_info = stmt.source_info;
- nop_stmts.push(idx);
-
- try_eat_storage_stmts(&mut stmt_iter, &mut storage_live_stmts, &mut storage_dead_stmts);
-
- for (live_idx, live_local) in storage_live_stmts {
- if let Some(i) = storage_dead_stmts.iter().rposition(|(_, l)| *l == live_local) {
- let (dead_idx, _) = storage_dead_stmts.swap_remove(i);
- storage_stmts.push((live_idx, dead_idx, live_local));
-
- if live_local == local_tmp_s0 {
- nop_stmts.push(get_variant_field_stmt);
- }
- }
- }
- // We sort primitive usize here so we can use unstable sort
- nop_stmts.sort_unstable();
-
- // Use one of the statements we're going to discard between the point
- // where the storage location for the variant field becomes live and
- // is killed.
- let (live_idx, dead_idx) = find_storage_live_dead_stmts_for_local(local_tmp_s0, stmts)?;
- let stmt_to_overwrite =
- nop_stmts.iter().find(|stmt_idx| live_idx < **stmt_idx && **stmt_idx < dead_idx);
-
- let mut tmp_assigned_vars = BitSet::new_empty(locals_count);
- for (l, r) in &tmp_assigns {
- tmp_assigned_vars.insert(*l);
- tmp_assigned_vars.insert(*r);
- }
-
- let dbg_info_to_adjust: Vec<_> = debug_info
- .iter()
- .enumerate()
- .filter_map(|(i, var_info)| {
- if let VarDebugInfoContents::Place(p) = var_info.value {
- if tmp_assigned_vars.contains(p.local) {
- return Some(i);
- }
- }
-
- None
- })
- .collect();
-
- Some(ArmIdentityInfo {
- local_temp_0: local_tmp_s0,
- local_1,
- vf_s0,
- get_variant_field_stmt,
- field_tmp_assignments: tmp_assigns,
- local_tmp_s1,
- local_0,
- vf_s1,
- set_discr_local,
- set_discr_var_idx,
- stmt_to_overwrite: *stmt_to_overwrite?,
- source_info: discr_stmt_source_info,
- storage_stmts,
- stmts_to_remove: nop_stmts,
- dbg_info_to_adjust,
- dbg_projection,
- })
-}
-
-fn optimization_applies<'tcx>(
- opt_info: &ArmIdentityInfo<'tcx>,
- local_decls: &IndexVec<Local, LocalDecl<'tcx>>,
- local_uses: &IndexVec<Local, usize>,
- var_debug_info: &[VarDebugInfo<'tcx>],
-) -> bool {
- trace!("testing if optimization applies...");
-
- // FIXME(wesleywiser): possibly relax this restriction?
- if opt_info.local_0 == opt_info.local_1 {
- trace!("NO: moving into ourselves");
- return false;
- } else if opt_info.vf_s0 != opt_info.vf_s1 {
- trace!("NO: the field-and-variant information do not match");
- return false;
- } else if local_decls[opt_info.local_0].ty != local_decls[opt_info.local_1].ty {
- // FIXME(Centril,oli-obk): possibly relax to same layout?
- trace!("NO: source and target locals have different types");
- return false;
- } else if (opt_info.local_0, opt_info.vf_s0.var_idx)
- != (opt_info.set_discr_local, opt_info.set_discr_var_idx)
- {
- trace!("NO: the discriminants do not match");
- return false;
- }
-
- // Verify the assignment chain consists of the form b = a; c = b; d = c; etc...
- if opt_info.field_tmp_assignments.is_empty() {
- trace!("NO: no assignments found");
- return false;
- }
- let mut last_assigned_to = opt_info.field_tmp_assignments[0].1;
- let source_local = last_assigned_to;
- for (l, r) in &opt_info.field_tmp_assignments {
- if *r != last_assigned_to {
- trace!("NO: found unexpected assignment {:?} = {:?}", l, r);
- return false;
- }
-
- last_assigned_to = *l;
- }
-
- // Check that the first and last used locals are only used twice
- // since they are of the form:
- //
- // ```
- // _first = ((_x as Variant).n: ty);
- // _n = _first;
- // ...
- // ((_y as Variant).n: ty) = _n;
- // discriminant(_y) = z;
- // ```
- for (l, r) in &opt_info.field_tmp_assignments {
- if local_uses[*l] != 2 {
- warn!("NO: FAILED assignment chain local {:?} was used more than twice", l);
- return false;
- } else if local_uses[*r] != 2 {
- warn!("NO: FAILED assignment chain local {:?} was used more than twice", r);
- return false;
- }
- }
-
- // Check that debug info only points to full Locals and not projections.
- for dbg_idx in &opt_info.dbg_info_to_adjust {
- let dbg_info = &var_debug_info[*dbg_idx];
- if let VarDebugInfoContents::Place(p) = dbg_info.value {
- if !p.projection.is_empty() {
- trace!("NO: debug info for {:?} had a projection {:?}", dbg_info.name, p);
- return false;
- }
- }
- }
-
- if source_local != opt_info.local_temp_0 {
- trace!(
- "NO: start of assignment chain does not match enum variant temp: {:?} != {:?}",
- source_local,
- opt_info.local_temp_0
- );
- return false;
- } else if last_assigned_to != opt_info.local_tmp_s1 {
- trace!(
- "NO: end of assignment chain does not match written enum temp: {:?} != {:?}",
- last_assigned_to,
- opt_info.local_tmp_s1
- );
- return false;
- }
-
- trace!("SUCCESS: optimization applies!");
- true
-}
-
-impl<'tcx> MirPass<'tcx> for SimplifyArmIdentity {
- fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
- // FIXME(77359): This optimization can result in unsoundness.
- if !tcx.sess.opts.unstable_opts.unsound_mir_opts {
- return;
- }
-
- let source = body.source;
- trace!("running SimplifyArmIdentity on {:?}", source);
-
- let local_uses = LocalUseCounter::get_local_uses(body);
- for bb in body.basic_blocks.as_mut() {
- if let Some(opt_info) =
- get_arm_identity_info(&bb.statements, body.local_decls.len(), &body.var_debug_info)
- {
- trace!("got opt_info = {:#?}", opt_info);
- if !optimization_applies(
- &opt_info,
- &body.local_decls,
- &local_uses,
- &body.var_debug_info,
- ) {
- debug!("optimization skipped for {:?}", source);
- continue;
- }
-
- // Also remove unused Storage{Live,Dead} statements which correspond
- // to temps used previously.
- for (live_idx, dead_idx, local) in &opt_info.storage_stmts {
- // The temporary that we've read the variant field into is scoped to this block,
- // so we can remove the assignment.
- if *local == opt_info.local_temp_0 {
- bb.statements[opt_info.get_variant_field_stmt].make_nop();
- }
-
- for (left, right) in &opt_info.field_tmp_assignments {
- if local == left || local == right {
- bb.statements[*live_idx].make_nop();
- bb.statements[*dead_idx].make_nop();
- }
- }
- }
-
- // Right shape; transform
- for stmt_idx in opt_info.stmts_to_remove {
- bb.statements[stmt_idx].make_nop();
- }
-
- let stmt = &mut bb.statements[opt_info.stmt_to_overwrite];
- stmt.source_info = opt_info.source_info;
- stmt.kind = StatementKind::Assign(Box::new((
- opt_info.local_0.into(),
- Rvalue::Use(Operand::Move(opt_info.local_1.into())),
- )));
-
- bb.statements.retain(|stmt| stmt.kind != StatementKind::Nop);
-
- // Fix the debug info to point to the right local
- for dbg_index in opt_info.dbg_info_to_adjust {
- let dbg_info = &mut body.var_debug_info[dbg_index];
- assert!(
- matches!(dbg_info.value, VarDebugInfoContents::Place(_)),
- "value was not a Place"
- );
- if let VarDebugInfoContents::Place(p) = &mut dbg_info.value {
- assert!(p.projection.is_empty());
- p.local = opt_info.local_0;
- p.projection = opt_info.dbg_projection;
- }
- }
-
- trace!("block is now {:?}", bb.statements);
- }
- }
- }
-}
-
-struct LocalUseCounter {
- local_uses: IndexVec<Local, usize>,
-}
-
-impl LocalUseCounter {
- fn get_local_uses(body: &Body<'_>) -> IndexVec<Local, usize> {
- let mut counter = LocalUseCounter { local_uses: IndexVec::from_elem(0, &body.local_decls) };
- counter.visit_body(body);
- counter.local_uses
- }
-}
-
-impl Visitor<'_> for LocalUseCounter {
- fn visit_local(&mut self, local: Local, context: PlaceContext, _location: Location) {
- if context.is_storage_marker()
- || context == PlaceContext::NonUse(NonUseContext::VarDebugInfo)
- {
- return;
- }
-
- self.local_uses[local] += 1;
- }
-}
-
-/// Match on:
-/// ```ignore (MIR)
-/// _LOCAL_INTO = ((_LOCAL_FROM as Variant).FIELD: TY);
-/// ```
-fn match_get_variant_field<'tcx>(
- stmt: &Statement<'tcx>,
-) -> Option<(Local, Local, VarField<'tcx>, &'tcx List<PlaceElem<'tcx>>)> {
- match &stmt.kind {
- StatementKind::Assign(box (
- place_into,
- Rvalue::Use(Operand::Copy(pf) | Operand::Move(pf)),
- )) => {
- let local_into = place_into.as_local()?;
- let (local_from, vf) = match_variant_field_place(*pf)?;
- Some((local_into, local_from, vf, pf.projection))
- }
- _ => None,
- }
-}
-
-/// Match on:
-/// ```ignore (MIR)
-/// ((_LOCAL_FROM as Variant).FIELD: TY) = move _LOCAL_INTO;
-/// ```
-fn match_set_variant_field<'tcx>(stmt: &Statement<'tcx>) -> Option<(Local, Local, VarField<'tcx>)> {
- match &stmt.kind {
- StatementKind::Assign(box (place_from, Rvalue::Use(Operand::Move(place_into)))) => {
- let local_into = place_into.as_local()?;
- let (local_from, vf) = match_variant_field_place(*place_from)?;
- Some((local_into, local_from, vf))
- }
- _ => None,
- }
-}
-
-/// Match on:
-/// ```ignore (MIR)
-/// discriminant(_LOCAL_TO_SET) = VAR_IDX;
-/// ```
-fn match_set_discr(stmt: &Statement<'_>) -> Option<(Local, VariantIdx)> {
- match &stmt.kind {
- StatementKind::SetDiscriminant { place, variant_index } => {
- Some((place.as_local()?, *variant_index))
- }
- _ => None,
- }
-}
-
-#[derive(PartialEq, Debug)]
-struct VarField<'tcx> {
- field: Field,
- field_ty: Ty<'tcx>,
- var_idx: VariantIdx,
-}
-
-/// Match on `((_LOCAL as Variant).FIELD: TY)`.
-fn match_variant_field_place(place: Place<'_>) -> Option<(Local, VarField<'_>)> {
- match place.as_ref() {
- PlaceRef {
- local,
- projection: &[ProjectionElem::Downcast(_, var_idx), ProjectionElem::Field(field, ty)],
- } => Some((local, VarField { field, field_ty: ty, var_idx })),
- _ => None,
- }
-}
-
-/// Simplifies `SwitchInt(_) -> [targets]`,
-/// where all the `targets` have the same form,
-/// into `goto -> target_first`.
-pub struct SimplifyBranchSame;
-
-impl<'tcx> MirPass<'tcx> for SimplifyBranchSame {
- fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
- // This optimization is disabled by default for now due to
- // soundness concerns; see issue #89485 and PR #89489.
- if !tcx.sess.opts.unstable_opts.unsound_mir_opts {
- return;
- }
-
- trace!("Running SimplifyBranchSame on {:?}", body.source);
- let finder = SimplifyBranchSameOptimizationFinder { body, tcx };
- let opts = finder.find();
-
- let did_remove_blocks = opts.len() > 0;
- for opt in opts.iter() {
- trace!("SUCCESS: Applying optimization {:?}", opt);
- // Replace `SwitchInt(..) -> [bb_first, ..];` with a `goto -> bb_first;`.
- body.basic_blocks_mut()[opt.bb_to_opt_terminator].terminator_mut().kind =
- TerminatorKind::Goto { target: opt.bb_to_goto };
- }
-
- if did_remove_blocks {
- // We have dead blocks now, so remove those.
- simplify::remove_dead_blocks(tcx, body);
- }
- }
-}
-
-#[derive(Debug)]
-struct SimplifyBranchSameOptimization {
- /// All basic blocks are equal so go to this one
- bb_to_goto: BasicBlock,
- /// Basic block where the terminator can be simplified to a goto
- bb_to_opt_terminator: BasicBlock,
-}
-
-struct SwitchTargetAndValue {
- target: BasicBlock,
- // None in case of the `otherwise` case
- value: Option<u128>,
-}
-
-struct SimplifyBranchSameOptimizationFinder<'a, 'tcx> {
- body: &'a Body<'tcx>,
- tcx: TyCtxt<'tcx>,
-}
-
-impl<'tcx> SimplifyBranchSameOptimizationFinder<'_, 'tcx> {
- fn find(&self) -> Vec<SimplifyBranchSameOptimization> {
- self.body
- .basic_blocks
- .iter_enumerated()
- .filter_map(|(bb_idx, bb)| {
- let (discr_switched_on, targets_and_values) = match &bb.terminator().kind {
- TerminatorKind::SwitchInt { targets, discr, .. } => {
- let targets_and_values: Vec<_> = targets.iter()
- .map(|(val, target)| SwitchTargetAndValue { target, value: Some(val) })
- .chain(once(SwitchTargetAndValue { target: targets.otherwise(), value: None }))
- .collect();
- (discr, targets_and_values)
- },
- _ => return None,
- };
-
- // find the adt that has its discriminant read
- // assuming this must be the last statement of the block
- let adt_matched_on = match &bb.statements.last()?.kind {
- StatementKind::Assign(box (place, rhs))
- if Some(*place) == discr_switched_on.place() =>
- {
- match rhs {
- Rvalue::Discriminant(adt_place) if adt_place.ty(self.body, self.tcx).ty.is_enum() => adt_place,
- _ => {
- trace!("NO: expected a discriminant read of an enum instead of: {:?}", rhs);
- return None;
- }
- }
- }
- other => {
- trace!("NO: expected an assignment of a discriminant read to a place. Found: {:?}", other);
- return None
- },
- };
-
- let mut iter_bbs_reachable = targets_and_values
- .iter()
- .map(|target_and_value| (target_and_value, &self.body.basic_blocks[target_and_value.target]))
- .filter(|(_, bb)| {
- // Reaching `unreachable` is UB so assume it doesn't happen.
- bb.terminator().kind != TerminatorKind::Unreachable
- })
- .peekable();
-
- let bb_first = iter_bbs_reachable.peek().map_or(&targets_and_values[0], |(idx, _)| *idx);
- let mut all_successors_equivalent = StatementEquality::TrivialEqual;
-
- // All successor basic blocks must be equal or contain statements that are pairwise considered equal.
- for ((target_and_value_l,bb_l), (target_and_value_r,bb_r)) in iter_bbs_reachable.tuple_windows() {
- let trivial_checks = bb_l.is_cleanup == bb_r.is_cleanup
- && bb_l.terminator().kind == bb_r.terminator().kind
- && bb_l.statements.len() == bb_r.statements.len();
- let statement_check = || {
- bb_l.statements.iter().zip(&bb_r.statements).try_fold(StatementEquality::TrivialEqual, |acc,(l,r)| {
- let stmt_equality = self.statement_equality(*adt_matched_on, &l, target_and_value_l, &r, target_and_value_r);
- if matches!(stmt_equality, StatementEquality::NotEqual) {
- // short circuit
- None
- } else {
- Some(acc.combine(&stmt_equality))
- }
- })
- .unwrap_or(StatementEquality::NotEqual)
- };
- if !trivial_checks {
- all_successors_equivalent = StatementEquality::NotEqual;
- break;
- }
- all_successors_equivalent = all_successors_equivalent.combine(&statement_check());
- };
-
- match all_successors_equivalent{
- StatementEquality::TrivialEqual => {
- // statements are trivially equal, so just take first
- trace!("Statements are trivially equal");
- Some(SimplifyBranchSameOptimization {
- bb_to_goto: bb_first.target,
- bb_to_opt_terminator: bb_idx,
- })
- }
- StatementEquality::ConsideredEqual(bb_to_choose) => {
- trace!("Statements are considered equal");
- Some(SimplifyBranchSameOptimization {
- bb_to_goto: bb_to_choose,
- bb_to_opt_terminator: bb_idx,
- })
- }
- StatementEquality::NotEqual => {
- trace!("NO: not all successors of basic block {:?} were equivalent", bb_idx);
- None
- }
- }
- })
- .collect()
- }
-
- /// Tests if two statements can be considered equal
- ///
- /// Statements can be trivially equal if the kinds match.
- /// But they can also be considered equal in the following case A:
- /// ```ignore (MIR)
- /// discriminant(_0) = 0; // bb1
- /// _0 = move _1; // bb2
- /// ```
- /// In this case the two statements are equal iff
- /// - `_0` is an enum where the variant index 0 is fieldless, and
- /// - bb1 was targeted by a switch where the discriminant of `_1` was switched on
- fn statement_equality(
- &self,
- adt_matched_on: Place<'tcx>,
- x: &Statement<'tcx>,
- x_target_and_value: &SwitchTargetAndValue,
- y: &Statement<'tcx>,
- y_target_and_value: &SwitchTargetAndValue,
- ) -> StatementEquality {
- let helper = |rhs: &Rvalue<'tcx>,
- place: &Place<'tcx>,
- variant_index: VariantIdx,
- switch_value: u128,
- side_to_choose| {
- let place_type = place.ty(self.body, self.tcx).ty;
- let adt = match *place_type.kind() {
- ty::Adt(adt, _) if adt.is_enum() => adt,
- _ => return StatementEquality::NotEqual,
- };
- // We need to make sure that the switch value that targets the bb with
- // SetDiscriminant is the same as the variant discriminant.
- let variant_discr = adt.discriminant_for_variant(self.tcx, variant_index).val;
- if variant_discr != switch_value {
- trace!(
- "NO: variant discriminant {} does not equal switch value {}",
- variant_discr,
- switch_value
- );
- return StatementEquality::NotEqual;
- }
- let variant_is_fieldless = adt.variant(variant_index).fields.is_empty();
- if !variant_is_fieldless {
- trace!("NO: variant {:?} was not fieldless", variant_index);
- return StatementEquality::NotEqual;
- }
-
- match rhs {
- Rvalue::Use(operand) if operand.place() == Some(adt_matched_on) => {
- StatementEquality::ConsideredEqual(side_to_choose)
- }
- _ => {
- trace!(
- "NO: RHS of assignment was {:?}, but expected it to match the adt being matched on in the switch, which is {:?}",
- rhs,
- adt_matched_on
- );
- StatementEquality::NotEqual
- }
- }
- };
- match (&x.kind, &y.kind) {
- // trivial case
- (x, y) if x == y => StatementEquality::TrivialEqual,
-
- // check for case A
- (
- StatementKind::Assign(box (_, rhs)),
- &StatementKind::SetDiscriminant { ref place, variant_index },
- ) if y_target_and_value.value.is_some() => {
- // choose basic block of x, as that has the assign
- helper(
- rhs,
- place,
- variant_index,
- y_target_and_value.value.unwrap(),
- x_target_and_value.target,
- )
- }
- (
- &StatementKind::SetDiscriminant { ref place, variant_index },
- &StatementKind::Assign(box (_, ref rhs)),
- ) if x_target_and_value.value.is_some() => {
- // choose basic block of y, as that has the assign
- helper(
- rhs,
- place,
- variant_index,
- x_target_and_value.value.unwrap(),
- y_target_and_value.target,
- )
- }
- _ => {
- trace!("NO: statements `{:?}` and `{:?}` not considered equal", x, y);
- StatementEquality::NotEqual
- }
- }
- }
-}
-
-#[derive(Copy, Clone, Eq, PartialEq)]
-enum StatementEquality {
- /// The two statements are trivially equal; same kind
- TrivialEqual,
- /// The two statements are considered equal, but may be of different kinds. The BasicBlock field is the basic block to jump to when performing the branch-same optimization.
- /// For example, `_0 = _1` and `discriminant(_0) = discriminant(0)` are considered equal if 0 is a fieldless variant of an enum. But we don't want to jump to the basic block with the SetDiscriminant, as that is not legal if _1 is not the 0 variant index
- ConsideredEqual(BasicBlock),
- /// The two statements are not equal
- NotEqual,
-}
-
-impl StatementEquality {
- fn combine(&self, other: &StatementEquality) -> StatementEquality {
- use StatementEquality::*;
- match (self, other) {
- (TrivialEqual, TrivialEqual) => TrivialEqual,
- (TrivialEqual, ConsideredEqual(b)) | (ConsideredEqual(b), TrivialEqual) => {
- ConsideredEqual(*b)
- }
- (ConsideredEqual(b1), ConsideredEqual(b2)) => {
- if b1 == b2 {
- ConsideredEqual(*b1)
- } else {
- NotEqual
- }
- }
- (_, NotEqual) | (NotEqual, _) => NotEqual,
- }
- }
-}
#[primary_span]
pub if_span: Span,
#[subdiagnostic]
- pub sub: IfExpressionMissingThenBlockSub,
+ pub missing_then_block_sub: IfExpressionMissingThenBlockSub,
+ #[subdiagnostic]
+ pub let_else_sub: Option<IfExpressionLetSomeSub>,
}
#[derive(Subdiagnostic)]
AddThenBlock(#[primary_span] Span),
}
+#[derive(Subdiagnostic)]
+#[help(parse_extra_if_in_let_else)]
+pub(crate) struct IfExpressionLetSomeSub {
+ #[primary_span]
+ pub if_span: Span,
+}
+
#[derive(Diagnostic)]
#[diag(parse_if_expression_missing_condition)]
pub(crate) struct IfExpressionMissingCondition {
/// Some special error handling for the "top-level" patterns in a match arm,
/// `for` loop, `let`, &c. (in contrast to subpatterns within such).
- pub(crate) fn maybe_recover_colon_colon_in_pat_typo(
+ pub(crate) fn maybe_recover_colon_colon_in_pat_typo_or_anon_enum(
&mut self,
mut first_pat: P<Pat>,
expected: Expected,
if !matches!(first_pat.kind, PatKind::Ident(_, _, None) | PatKind::Path(..))
|| !self.look_ahead(1, |token| token.is_ident() && !token.is_reserved_ident())
{
+ let mut snapshot_type = self.create_snapshot_for_diagnostic();
+ snapshot_type.bump(); // `:`
+ match snapshot_type.parse_ty() {
+ Err(inner_err) => {
+ inner_err.cancel();
+ }
+ Ok(ty) => {
+ let Err(mut err) = self.expected_one_of_not_found(&[], &[]) else {
+ return first_pat;
+ };
+ err.span_label(ty.span, "specifying the type of a pattern isn't supported");
+ self.restore_snapshot(snapshot_type);
+ let span = first_pat.span.to(ty.span);
+ first_pat = self.mk_pat(span, PatKind::Wild);
+ err.emit();
+ }
+ }
return first_pat;
}
// The pattern looks like it might be a path with a `::` -> `:` typo:
// `match foo { bar:baz => {} }`
- let span = self.token.span;
+ let colon_span = self.token.span;
// We only emit "unexpected `:`" error here if we can successfully parse the
// whole pattern correctly in that case.
- let snapshot = self.create_snapshot_for_diagnostic();
+ let mut snapshot_pat = self.create_snapshot_for_diagnostic();
+ let mut snapshot_type = self.create_snapshot_for_diagnostic();
// Create error for "unexpected `:`".
match self.expected_one_of_not_found(&[], &[]) {
Err(mut err) => {
- self.bump(); // Skip the `:`.
- match self.parse_pat_no_top_alt(expected) {
+ snapshot_pat.bump(); // Skip the `:`.
+ snapshot_type.bump(); // Skip the `:`.
+ match snapshot_pat.parse_pat_no_top_alt(expected) {
Err(inner_err) => {
- // Carry on as if we had not done anything, callers will emit a
- // reasonable error.
inner_err.cancel();
- err.cancel();
- self.restore_snapshot(snapshot);
}
Ok(mut pat) => {
// We've parsed the rest of the pattern.
_ => {}
}
if show_sugg {
- err.span_suggestion(
- span,
+ err.span_suggestion_verbose(
+ colon_span.until(self.look_ahead(1, |t| t.span)),
"maybe write a path separator here",
"::",
Applicability::MaybeIncorrect,
} else {
first_pat = self.mk_pat(new_span, PatKind::Wild);
}
- err.emit();
+ self.restore_snapshot(snapshot_pat);
}
}
+ match snapshot_type.parse_ty() {
+ Err(inner_err) => {
+ inner_err.cancel();
+ }
+ Ok(ty) => {
+ err.span_label(ty.span, "specifying the type of a pattern isn't supported");
+ self.restore_snapshot(snapshot_type);
+ let new_span = first_pat.span.to(ty.span);
+ first_pat = self.mk_pat(new_span, PatKind::Wild);
+ }
+ }
+ err.emit();
}
_ => {
// Carry on as if we had not done anything. This should be unreachable.
- self.restore_snapshot(snapshot);
}
};
first_pat
ComparisonOrShiftInterpretedAsGenericSugg, DoCatchSyntaxRemoved, DotDotDot, EqFieldInit,
ExpectedElseBlock, ExpectedEqForLetExpr, ExpectedExpressionFoundLet,
FieldExpressionWithGeneric, FloatLiteralRequiresIntegerPart, FoundExprWouldBeStmt,
- IfExpressionMissingCondition, IfExpressionMissingThenBlock, IfExpressionMissingThenBlockSub,
- InvalidBlockMacroSegment, InvalidComparisonOperator, InvalidComparisonOperatorSub,
- InvalidInterpolatedExpression, InvalidLiteralSuffixOnTupleIndex, InvalidLogicalOperator,
- InvalidLogicalOperatorSub, LabeledLoopInBreak, LeadingPlusNotSupported, LeftArrowOperator,
- LifetimeInBorrowExpression, MacroInvocationWithQualifiedPath, MalformedLoopLabel,
- MatchArmBodyWithoutBraces, MatchArmBodyWithoutBracesSugg, MissingCommaAfterMatchArm,
- MissingDotDot, MissingInInForLoop, MissingInInForLoopSub, MissingSemicolonBeforeArray,
- NoFieldsForFnCall, NotAsNegationOperator, NotAsNegationOperatorSub,
- OuterAttributeNotAllowedOnIfElse, ParenthesesWithStructFields,
+ IfExpressionLetSomeSub, IfExpressionMissingCondition, IfExpressionMissingThenBlock,
+ IfExpressionMissingThenBlockSub, InvalidBlockMacroSegment, InvalidComparisonOperator,
+ InvalidComparisonOperatorSub, InvalidInterpolatedExpression, InvalidLiteralSuffixOnTupleIndex,
+ InvalidLogicalOperator, InvalidLogicalOperatorSub, LabeledLoopInBreak, LeadingPlusNotSupported,
+ LeftArrowOperator, LifetimeInBorrowExpression, MacroInvocationWithQualifiedPath,
+ MalformedLoopLabel, MatchArmBodyWithoutBraces, MatchArmBodyWithoutBracesSugg,
+ MissingCommaAfterMatchArm, MissingDotDot, MissingInInForLoop, MissingInInForLoopSub,
+ MissingSemicolonBeforeArray, NoFieldsForFnCall, NotAsNegationOperator,
+ NotAsNegationOperatorSub, OuterAttributeNotAllowedOnIfElse, ParenthesesWithStructFields,
RequireColonAfterLabeledExpression, ShiftInterpretedAsGeneric, StructLiteralNotAllowedHere,
StructLiteralNotAllowedHereSugg, TildeAsUnaryOperator, UnexpectedIfWithIf,
UnexpectedTokenAfterLabel, UnexpectedTokenAfterLabelSugg, WrapExpressionInParentheses,
if let ExprKind::Block(_, None) = right.kind => {
self.sess.emit_err(IfExpressionMissingThenBlock {
if_span: lo,
- sub: IfExpressionMissingThenBlockSub::UnfinishedCondition(
- cond_span.shrink_to_lo().to(*binop_span)
- ),
+ missing_then_block_sub:
+ IfExpressionMissingThenBlockSub::UnfinishedCondition(cond_span.shrink_to_lo().to(*binop_span)),
+ let_else_sub: None,
+
});
std::mem::replace(right, this.mk_expr_err(binop_span.shrink_to_hi()))
},
if let Some(block) = recover_block_from_condition(self) {
block
} else {
+ let let_else_sub = matches!(cond.kind, ExprKind::Let(..))
+ .then(|| IfExpressionLetSomeSub { if_span: lo });
+
self.sess.emit_err(IfExpressionMissingThenBlock {
if_span: lo,
- sub: IfExpressionMissingThenBlockSub::AddThenBlock(cond_span.shrink_to_hi()),
+ missing_then_block_sub: IfExpressionMissingThenBlockSub::AddThenBlock(
+ cond_span.shrink_to_hi(),
+ ),
+ let_else_sub,
});
self.mk_block_err(cond_span.shrink_to_hi())
}
// Check if the user wrote `foo:bar` instead of `foo::bar`.
if ra == RecoverColon::Yes {
- first_pat = self.maybe_recover_colon_colon_in_pat_typo(first_pat, expected);
+ first_pat =
+ self.maybe_recover_colon_colon_in_pat_typo_or_anon_enum(first_pat, expected);
}
if let Some(leading_vert_span) = leading_vert_span {
self as ast, BareFnTy, FnRetTy, GenericBound, GenericBounds, GenericParam, Generics, Lifetime,
MacCall, MutTy, Mutability, PolyTraitRef, TraitBoundModifier, TraitObjectSyntax, Ty, TyKind,
};
+use rustc_ast_pretty::pprust;
use rustc_errors::{pluralize, struct_span_err, Applicability, PResult};
use rustc_span::source_map::Span;
use rustc_span::symbol::{kw, sym, Ident};
No,
}
-#[derive(PartialEq)]
+#[derive(PartialEq, Clone, Copy)]
pub(super) enum RecoverQPath {
Yes,
No,
}
+#[derive(PartialEq, Clone, Copy)]
pub(super) enum RecoverQuestionMark {
Yes,
No,
}
+#[derive(PartialEq, Clone, Copy)]
+pub(super) enum RecoverAnonEnum {
+ Yes,
+ No,
+}
+
/// Signals whether parsing a type should recover `->`.
///
/// More specifically, when parsing a function like:
}
// Is `...` (`CVarArgs`) legal at this level of type parsing?
-#[derive(PartialEq)]
+#[derive(PartialEq, Clone, Copy)]
enum AllowCVariadic {
Yes,
No,
RecoverReturnSign::Yes,
None,
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::No,
)
}
RecoverReturnSign::Yes,
Some(ty_params),
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::No,
)
}
RecoverReturnSign::Yes,
None,
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::Yes,
)
}
RecoverReturnSign::Yes,
None,
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::No,
)
}
RecoverReturnSign::Yes,
None,
RecoverQuestionMark::No,
+ RecoverAnonEnum::No,
)
}
RecoverReturnSign::Yes,
None,
RecoverQuestionMark::No,
+ RecoverAnonEnum::No,
)
}
RecoverReturnSign::OnlyFatArrow,
None,
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::No,
)
}
recover_return_sign,
None,
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::Yes,
)?;
FnRetTy::Ty(ty)
} else if recover_return_sign.can_recover(&self.token.kind) {
recover_return_sign,
None,
RecoverQuestionMark::Yes,
+ RecoverAnonEnum::Yes,
)?;
FnRetTy::Ty(ty)
} else {
recover_return_sign: RecoverReturnSign,
ty_generics: Option<&Generics>,
recover_question_mark: RecoverQuestionMark,
+ recover_anon_enum: RecoverAnonEnum,
) -> PResult<'a, P<Ty>> {
let allow_qpath_recovery = recover_qpath == RecoverQPath::Yes;
maybe_recover_from_interpolated_ty_qpath!(self, allow_qpath_recovery);
let mut ty = self.mk_ty(span, kind);
// Try to recover from use of `+` with incorrect priority.
- if matches!(allow_plus, AllowPlus::Yes) {
+ if allow_plus == AllowPlus::Yes {
self.maybe_recover_from_bad_type_plus(&ty)?;
} else {
self.maybe_report_ambiguous_plus(impl_dyn_multi, &ty);
}
- if let RecoverQuestionMark::Yes = recover_question_mark {
+ if RecoverQuestionMark::Yes == recover_question_mark {
ty = self.maybe_recover_from_question_mark(ty);
}
+ if recover_anon_enum == RecoverAnonEnum::Yes
+ && self.check_noexpect(&token::BinOp(token::Or))
+ && self.look_ahead(1, |t| t.can_begin_type())
+ {
+ let mut pipes = vec![self.token.span];
+ let mut types = vec![ty];
+ loop {
+ if !self.eat(&token::BinOp(token::Or)) {
+ break;
+ }
+ pipes.push(self.prev_token.span);
+ types.push(self.parse_ty_common(
+ allow_plus,
+ allow_c_variadic,
+ recover_qpath,
+ recover_return_sign,
+ ty_generics,
+ recover_question_mark,
+ RecoverAnonEnum::No,
+ )?);
+ }
+ let mut err = self.struct_span_err(pipes, "anonymous enums are not supported");
+ for ty in &types {
+ err.span_label(ty.span, "");
+ }
+ err.help(&format!(
+ "create a named `enum` and use it here instead:\nenum Name {{\n{}\n}}",
+ types
+ .iter()
+ .enumerate()
+ .map(|(i, t)| format!(
+ " Variant{}({}),",
+ i + 1, // Lets not confuse people with zero-indexing :)
+ pprust::to_string(|s| s.print_type(&t)),
+ ))
+ .collect::<Vec<_>>()
+ .join("\n"),
+ ));
+ err.emit();
+ return Ok(self.mk_ty(lo.to(self.prev_token.span), TyKind::Err));
+ }
if allow_qpath_recovery { self.maybe_recover_from_bad_qpath(ty) } else { Ok(ty) }
}
use crate::errors::{
self, AttrApplication, DebugVisualizerUnreadable, InvalidAttrAtCrateLevel, ObjectLifetimeErr,
- OnlyHasEffectOn, TransparentIncompatible, UnrecognizedReprHint,
+ OnlyHasEffectOn, ProcMacroDiffArguments, ProcMacroInvalidAbi, ProcMacroMissingArguments,
+ ProcMacroTypeError, ProcMacroUnsafe, TransparentIncompatible, UnrecognizedReprHint,
};
use rustc_ast::{ast, AttrStyle, Attribute, LitKind, MetaItemKind, MetaItemLit, NestedMetaItem};
use rustc_data_structures::fx::FxHashMap;
-use rustc_errors::{fluent, Applicability, MultiSpan};
+use rustc_errors::{fluent, Applicability, IntoDiagnosticArg, MultiSpan};
use rustc_expand::base::resolve_path;
use rustc_feature::{AttributeDuplicates, AttributeType, BuiltinAttribute, BUILTIN_ATTRIBUTE_MAP};
use rustc_hir as hir;
use rustc_hir::{
self, FnSig, ForeignItem, HirId, Item, ItemKind, TraitItem, CRATE_HIR_ID, CRATE_OWNER_ID,
};
-use rustc_hir::{MethodKind, Target};
+use rustc_hir::{MethodKind, Target, Unsafety};
use rustc_middle::hir::nested_filter;
use rustc_middle::middle::resolve_lifetime::ObjectLifetimeDefault;
+use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams};
use rustc_middle::ty::query::Providers;
-use rustc_middle::ty::TyCtxt;
+use rustc_middle::ty::{ParamEnv, TyCtxt};
use rustc_session::lint::builtin::{
CONFLICTING_REPR_HINTS, INVALID_DOC_ATTRIBUTES, UNUSED_ATTRIBUTES,
};
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_span::{Span, DUMMY_SP};
use rustc_target::spec::abi::Abi;
+use std::cell::Cell;
use std::collections::hash_map::Entry;
pub(crate) fn target_from_impl_item<'tcx>(
ForeignItem,
}
+#[derive(Copy, Clone)]
+pub(crate) enum ProcMacroKind {
+ FunctionLike,
+ Derive,
+ Attribute,
+}
+
+impl IntoDiagnosticArg for ProcMacroKind {
+ fn into_diagnostic_arg(self) -> rustc_errors::DiagnosticArgValue<'static> {
+ match self {
+ ProcMacroKind::Attribute => "attribute proc macro",
+ ProcMacroKind::Derive => "derive proc macro",
+ ProcMacroKind::FunctionLike => "function-like proc macro",
+ }
+ .into_diagnostic_arg()
+ }
+}
+
struct CheckAttrVisitor<'tcx> {
tcx: TyCtxt<'tcx>,
+
+ // Whether or not this visitor should abort after finding errors
+ abort: Cell<bool>,
}
impl CheckAttrVisitor<'_> {
sym::path => self.check_generic_attr(hir_id, attr, target, Target::Mod),
sym::plugin_registrar => self.check_plugin_registrar(hir_id, attr, target),
sym::macro_export => self.check_macro_export(hir_id, attr, target),
- sym::ignore | sym::should_panic | sym::proc_macro_derive => {
+ sym::ignore | sym::should_panic => {
self.check_generic_attr(hir_id, attr, target, Target::Fn)
}
sym::automatically_derived => {
self.check_generic_attr(hir_id, attr, target, Target::Mod)
}
sym::rustc_object_lifetime_default => self.check_object_lifetime_default(hir_id),
+ sym::proc_macro => {
+ self.check_proc_macro(hir_id, target, ProcMacroKind::FunctionLike)
+ }
+ sym::proc_macro_attribute => {
+ self.check_proc_macro(hir_id, target, ProcMacroKind::Attribute);
+ }
+ sym::proc_macro_derive => {
+ self.check_generic_attr(hir_id, attr, target, Target::Fn);
+ self.check_proc_macro(hir_id, target, ProcMacroKind::Derive)
+ }
_ => {}
}
errors::Unused { attr_span: attr.span, note },
);
}
+
+ /// A best effort attempt to create an error for a mismatching proc macro signature.
+ ///
+ /// If this best effort goes wrong, it will just emit a worse error later (see #102923)
+ fn check_proc_macro(&self, hir_id: HirId, target: Target, kind: ProcMacroKind) {
+ let expected_input_count = match kind {
+ ProcMacroKind::Attribute => 2,
+ ProcMacroKind::Derive | ProcMacroKind::FunctionLike => 1,
+ };
+
+ let expected_signature = match kind {
+ ProcMacroKind::Attribute => "fn(TokenStream, TokenStream) -> TokenStream",
+ ProcMacroKind::Derive | ProcMacroKind::FunctionLike => "fn(TokenStream) -> TokenStream",
+ };
+
+ let tcx = self.tcx;
+ if target == Target::Fn {
+ let Some(tokenstream) = tcx.get_diagnostic_item(sym::TokenStream) else {return};
+ let tokenstream = tcx.type_of(tokenstream);
+
+ let id = hir_id.expect_owner();
+ let hir_sig = tcx.hir().fn_sig_by_hir_id(hir_id).unwrap();
+
+ let sig = tcx.liberate_late_bound_regions(id.to_def_id(), tcx.fn_sig(id));
+ let sig = tcx.normalize_erasing_regions(ParamEnv::empty(), sig);
+
+ // We don't currently require that the function signature is equal to
+ // `fn(TokenStream) -> TokenStream`, but instead monomorphizes to
+ // `fn(TokenStream) -> TokenStream` after some substitution of generic arguments.
+ //
+ // Properly checking this means pulling in additional `rustc` crates, so we don't.
+ let drcx = DeepRejectCtxt { treat_obligation_params: TreatParams::AsInfer };
+
+ if sig.abi != Abi::Rust {
+ tcx.sess.emit_err(ProcMacroInvalidAbi { span: hir_sig.span, abi: sig.abi.name() });
+ self.abort.set(true);
+ }
+
+ if sig.unsafety == Unsafety::Unsafe {
+ tcx.sess.emit_err(ProcMacroUnsafe { span: hir_sig.span });
+ self.abort.set(true);
+ }
+
+ let output = sig.output();
+
+ // Typecheck the output
+ if !drcx.types_may_unify(output, tokenstream) {
+ tcx.sess.emit_err(ProcMacroTypeError {
+ span: hir_sig.decl.output.span(),
+ found: output,
+ kind,
+ expected_signature,
+ });
+ self.abort.set(true);
+ }
+
+ if sig.inputs().len() < expected_input_count {
+ tcx.sess.emit_err(ProcMacroMissingArguments {
+ expected_input_count,
+ span: hir_sig.span,
+ kind,
+ expected_signature,
+ });
+ self.abort.set(true);
+ }
+
+ // Check that the inputs are correct, if there are enough.
+ if sig.inputs().len() >= expected_input_count {
+ for (arg, input) in
+ sig.inputs().iter().zip(hir_sig.decl.inputs).take(expected_input_count)
+ {
+ if !drcx.types_may_unify(*arg, tokenstream) {
+ tcx.sess.emit_err(ProcMacroTypeError {
+ span: input.span,
+ found: *arg,
+ kind,
+ expected_signature,
+ });
+ self.abort.set(true);
+ }
+ }
+ }
+
+ // Check that there are not too many arguments
+ let body_id = tcx.hir().body_owned_by(id.def_id);
+ let excess = tcx.hir().body(body_id).params.get(expected_input_count..);
+ if let Some(excess @ [begin @ end] | excess @ [begin, .., end]) = excess {
+ tcx.sess.emit_err(ProcMacroDiffArguments {
+ span: begin.span.to(end.span),
+ count: excess.len(),
+ kind,
+ expected_signature,
+ });
+ self.abort.set(true);
+ }
+ }
+ }
}
impl<'tcx> Visitor<'tcx> for CheckAttrVisitor<'tcx> {
}
fn check_mod_attrs(tcx: TyCtxt<'_>, module_def_id: LocalDefId) {
- let check_attr_visitor = &mut CheckAttrVisitor { tcx };
+ let check_attr_visitor = &mut CheckAttrVisitor { tcx, abort: Cell::new(false) };
tcx.hir().visit_item_likes_in_module(module_def_id, check_attr_visitor);
if module_def_id.is_top_level_module() {
check_attr_visitor.check_attributes(CRATE_HIR_ID, DUMMY_SP, Target::Mod, None);
check_invalid_crate_level_attr(tcx, tcx.hir().krate_attrs());
}
+ if check_attr_visitor.abort.get() {
+ tcx.sess.abort_if_errors()
+ }
}
pub(crate) fn provide(providers: &mut Providers) {
Self::Match(TryDesugar) => &[sym::const_try],
// All other expressions are allowed.
- Self::Loop(Loop | While) | Self::Match(Normal) => &[],
+ Self::Loop(Loop | While) | Self::Match(Normal | FormatArgs) => &[],
};
Some(gates)
use rustc_middle::ty::{MainDefinition, Ty};
use rustc_span::{Span, Symbol, DUMMY_SP};
+use crate::check_attr::ProcMacroKind;
use crate::lang_items::Duplicate;
#[derive(Diagnostic)]
#[suggestion_part(code = "()")]
pub spans: Vec<Span>,
}
+
+#[derive(Diagnostic)]
+#[diag(passes_proc_macro_typeerror)]
+#[note]
+pub(crate) struct ProcMacroTypeError<'tcx> {
+ #[primary_span]
+ #[label]
+ pub span: Span,
+ pub found: Ty<'tcx>,
+ pub kind: ProcMacroKind,
+ pub expected_signature: &'static str,
+}
+
+#[derive(Diagnostic)]
+#[diag(passes_proc_macro_diff_arg_count)]
+pub(crate) struct ProcMacroDiffArguments {
+ #[primary_span]
+ #[label]
+ pub span: Span,
+ pub count: usize,
+ pub kind: ProcMacroKind,
+ pub expected_signature: &'static str,
+}
+
+#[derive(Diagnostic)]
+#[diag(passes_proc_macro_missing_args)]
+pub(crate) struct ProcMacroMissingArguments {
+ #[primary_span]
+ #[label]
+ pub span: Span,
+ pub expected_input_count: usize,
+ pub kind: ProcMacroKind,
+ pub expected_signature: &'static str,
+}
+
+#[derive(Diagnostic)]
+#[diag(passes_proc_macro_invalid_abi)]
+pub(crate) struct ProcMacroInvalidAbi {
+ #[primary_span]
+ pub span: Span,
+ pub abi: &'static str,
+}
+
+#[derive(Diagnostic)]
+#[diag(passes_proc_macro_unsafe)]
+pub(crate) struct ProcMacroUnsafe {
+ #[primary_span]
+ pub span: Span,
+}
Box, Array, ConstBlock, Call, MethodCall, Tup, Binary, Unary, Lit, Cast, Type, Let,
If, While, ForLoop, Loop, Match, Closure, Block, Async, Await, TryBlock, Assign,
AssignOp, Field, Index, Range, Underscore, Path, AddrOf, Break, Continue, Ret,
- InlineAsm, MacCall, Struct, Repeat, Paren, Try, Yield, Yeet, IncludedBytes, Err
+ InlineAsm, FormatArgs, MacCall, Struct, Repeat, Paren, Try, Yield, Yeet, IncludedBytes, Err
]
);
ast_visit::walk_expr(self, e)
&& let Some(FnCtxt::Assoc(_)) = fn_kind.ctxt()
&& let Some(items) = self.diagnostic_metadata.current_impl_items
&& let Some(item) = items.iter().find(|i| {
- if let AssocItemKind::Fn(_) = &i.kind && i.ident.name == item_str.name
+ if let AssocItemKind::Fn(..) | AssocItemKind::Const(..) = &i.kind
+ && i.ident.name == item_str.name
{
debug!(?item_str.name);
return true
}
false
})
- && let AssocItemKind::Fn(fn_) = &item.kind
{
- debug!(?fn_);
- let self_sugg = if fn_.sig.decl.has_self() { "self." } else { "Self::" };
+ let self_sugg = match &item.kind {
+ AssocItemKind::Fn(fn_) if fn_.sig.decl.has_self() => "self.",
+ _ => "Self::",
+ };
+
Some((
item_span.shrink_to_lo(),
- "consider using the associated function",
+ match &item.kind {
+ AssocItemKind::Fn(..) => "consider using the associated function",
+ AssocItemKind::Const(..) => "consider using the associated constant",
+ _ => unreachable!("item kind was filtered above"),
+ },
self_sugg.to_string()
))
} else {
ProcMacro,
}
-impl CrateType {
- /// When generated, is this crate type an archive?
- pub fn is_archive(&self) -> bool {
- match *self {
- CrateType::Rlib | CrateType::Staticlib => true,
- CrateType::Executable | CrateType::Dylib | CrateType::Cdylib | CrateType::ProcMacro => {
- false
- }
- }
- }
-}
-
#[derive(Clone, Hash, Debug, PartialEq, Eq)]
pub enum Passes {
Some(Vec<String>),
Target,
ToOwned,
ToString,
+ TokenStream,
Try,
TryCaptureGeneric,
TryCapturePrintable,
forbid,
forget,
format,
+ format_alignment,
format_args,
format_args_capture,
format_args_macro,
format_args_nl,
+ format_argument,
+ format_arguments,
+ format_count,
format_macro,
+ format_placeholder,
+ format_unsafe_arg,
freeze,
freg,
frem_fast,
{
match arg_layout.abi {
Abi::Scalar(scalar) => match scalar.primitive() {
- abi::Int(..) | abi::Pointer => {
+ abi::Int(..) | abi::Pointer(_) => {
if arg_layout.size.bits() > xlen {
return Err(CannotUseFpConv);
}
// The primitive for this algorithm.
Abi::Scalar(scalar) => {
let kind = match scalar.primitive() {
- abi::Int(..) | abi::Pointer => RegKind::Integer,
+ abi::Int(..) | abi::Pointer(_) => RegKind::Integer,
abi::F32 | abi::F64 => RegKind::Float,
};
Ok(HomogeneousAggregate::Homogeneous(Reg { kind, size: self.size }))
{
match arg_layout.abi {
Abi::Scalar(scalar) => match scalar.primitive() {
- abi::Int(..) | abi::Pointer => {
+ abi::Int(..) | abi::Pointer(_) => {
if arg_layout.size.bits() > xlen {
return Err(CannotUseFpConv);
}
{
let dl = cx.data_layout();
- if !scalar.primitive().is_float() {
+ if !matches!(scalar.primitive(), abi::F32 | abi::F64) {
return data;
}
(abi::F32, _) => offset += Reg::f32().size,
(_, abi::F64) => offset += Reg::f64().size,
(abi::Int(i, _signed), _) => offset += i.size(),
- (abi::Pointer, _) => offset += Reg::i64().size,
+ (abi::Pointer(_), _) => offset += Reg::i64().size,
_ => {}
}
- if (offset.bytes() % 4) != 0 && scalar2.primitive().is_float() {
+ if (offset.bytes() % 4) != 0 && matches!(scalar2.primitive(), abi::F32 | abi::F64) {
offset += Size::from_bytes(4 - (offset.bytes() % 4));
}
data = arg_scalar(cx, scalar2, offset, data);
Abi::Uninhabited => return Ok(()),
Abi::Scalar(scalar) => match scalar.primitive() {
- abi::Int(..) | abi::Pointer => Class::Int,
+ abi::Int(..) | abi::Pointer(_) => Class::Int,
abi::F32 | abi::F64 => Class::Sse,
},
C: HasDataLayout,
{
match self.abi {
- Abi::Scalar(scalar) => scalar.primitive().is_float(),
+ Abi::Scalar(scalar) => matches!(scalar.primitive(), F32 | F64),
Abi::Aggregate { .. } => {
if self.fields.count() == 1 && self.fields.offset(0).bytes() == 0 {
self.field(cx, 0).is_single_fp_element(cx)
ecx: &mut EvalCtxt<'_, 'tcx>,
goal: Goal<'tcx, Self>,
) -> QueryResult<'tcx>;
+
+ fn consider_builtin_pointee_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx>;
+
+ fn consider_builtin_future_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx>;
+
+ fn consider_builtin_generator_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx>;
}
impl<'tcx> EvalCtxt<'_, 'tcx> {
G::consider_builtin_fn_trait_candidates(self, goal, kind)
} else if lang_items.tuple_trait() == Some(trait_def_id) {
G::consider_builtin_tuple_candidate(self, goal)
+ } else if lang_items.pointee_trait() == Some(trait_def_id) {
+ G::consider_builtin_pointee_candidate(self, goal)
+ } else if lang_items.future_trait() == Some(trait_def_id) {
+ G::consider_builtin_future_candidate(self, goal)
+ } else if lang_items.gen_trait() == Some(trait_def_id) {
+ G::consider_builtin_generator_candidate(self, goal)
} else {
Err(NoSolution)
};
| ty::Tuple(_)
| ty::Param(_)
| ty::Placeholder(..)
- | ty::Infer(_)
+ | ty::Infer(ty::IntVar(_) | ty::FloatVar(_))
| ty::Error(_) => return,
- ty::Bound(..) => bug!("unexpected bound type: {goal:?}"),
+ ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_))
+ | ty::Bound(..) => bug!("unexpected self type for `{goal:?}`"),
ty::Alias(_, alias_ty) => alias_ty,
};
| ty::Tuple(_)
| ty::Param(_)
| ty::Placeholder(..)
- | ty::Infer(_)
+ | ty::Infer(ty::IntVar(_) | ty::FloatVar(_))
| ty::Error(_) => return,
- ty::Bound(..) => bug!("unexpected bound type: {goal:?}"),
+ ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_))
+ | ty::Bound(..) => bug!("unexpected self type for `{goal:?}`"),
ty::Dynamic(bounds, ..) => bounds,
};
use std::mem;
-use rustc_infer::{
- infer::InferCtxt,
- traits::{
- query::NoSolution, FulfillmentError, FulfillmentErrorCode, PredicateObligation,
- SelectionError, TraitEngine,
- },
+use rustc_infer::infer::InferCtxt;
+use rustc_infer::traits::{
+ query::NoSolution, FulfillmentError, FulfillmentErrorCode, MismatchedProjectionTypes,
+ PredicateObligation, SelectionError, TraitEngine,
};
+use rustc_middle::ty;
+use rustc_middle::ty::error::{ExpectedFound, TypeError};
-use super::{search_graph, Certainty, EvalCtxt};
+use super::{Certainty, InferCtxtEvalExt};
/// A trait engine using the new trait solver.
///
let mut has_changed = false;
for obligation in mem::take(&mut self.obligations) {
let goal = obligation.clone().into();
- let search_graph = &mut search_graph::SearchGraph::new(infcx.tcx);
- let mut ecx = EvalCtxt::new_outside_solver(infcx, search_graph);
- let (changed, certainty) = match ecx.evaluate_goal(goal) {
+ let (changed, certainty) = match infcx.evaluate_root_goal(goal) {
Ok(result) => result,
Err(NoSolution) => {
errors.push(FulfillmentError {
obligation: obligation.clone(),
- code: FulfillmentErrorCode::CodeSelectionError(
- SelectionError::Unimplemented,
- ),
+ code: match goal.predicate.kind().skip_binder() {
+ ty::PredicateKind::Clause(ty::Clause::Projection(_)) => {
+ FulfillmentErrorCode::CodeProjectionError(
+ // FIXME: This could be a `Sorts` if the term is a type
+ MismatchedProjectionTypes { err: TypeError::Mismatch },
+ )
+ }
+ ty::PredicateKind::Subtype(pred) => {
+ let (a, b) = infcx.replace_bound_vars_with_placeholders(
+ goal.predicate.kind().rebind((pred.a, pred.b)),
+ );
+ let expected_found = ExpectedFound::new(true, a, b);
+ FulfillmentErrorCode::CodeSubtypeError(
+ expected_found,
+ TypeError::Sorts(expected_found),
+ )
+ }
+ ty::PredicateKind::Coerce(pred) => {
+ let (a, b) = infcx.replace_bound_vars_with_placeholders(
+ goal.predicate.kind().rebind((pred.a, pred.b)),
+ );
+ let expected_found = ExpectedFound::new(false, a, b);
+ FulfillmentErrorCode::CodeSubtypeError(
+ expected_found,
+ TypeError::Sorts(expected_found),
+ )
+ }
+ ty::PredicateKind::ConstEquate(a, b) => {
+ let (a, b) = infcx.replace_bound_vars_with_placeholders(
+ goal.predicate.kind().rebind((a, b)),
+ );
+ let expected_found = ExpectedFound::new(true, a, b);
+ FulfillmentErrorCode::CodeConstEquateError(
+ expected_found,
+ TypeError::ConstMismatch(expected_found),
+ )
+ }
+ ty::PredicateKind::Clause(_)
+ | ty::PredicateKind::WellFormed(_)
+ | ty::PredicateKind::ObjectSafe(_)
+ | ty::PredicateKind::ClosureKind(_, _, _)
+ | ty::PredicateKind::ConstEvaluatable(_)
+ | ty::PredicateKind::TypeWellFormedFromEnv(_)
+ | ty::PredicateKind::Ambiguous => {
+ FulfillmentErrorCode::CodeSelectionError(
+ SelectionError::Unimplemented,
+ )
+ }
+ },
root_obligation: obligation,
});
continue;
}
}
+pub trait InferCtxtEvalExt<'tcx> {
+ /// Evaluates a goal from **outside** of the trait solver.
+ ///
+ /// Using this while inside of the solver is wrong as it uses a new
+ /// search graph which would break cycle detection.
+ fn evaluate_root_goal(
+ &self,
+ goal: Goal<'tcx, ty::Predicate<'tcx>>,
+ ) -> Result<(bool, Certainty), NoSolution>;
+}
+
+impl<'tcx> InferCtxtEvalExt<'tcx> for InferCtxt<'tcx> {
+ fn evaluate_root_goal(
+ &self,
+ goal: Goal<'tcx, ty::Predicate<'tcx>>,
+ ) -> Result<(bool, Certainty), NoSolution> {
+ let mut search_graph = search_graph::SearchGraph::new(self.tcx);
+
+ let result = EvalCtxt {
+ search_graph: &mut search_graph,
+ infcx: self,
+ var_values: CanonicalVarValues::dummy(),
+ }
+ .evaluate_goal(goal);
+
+ assert!(search_graph.is_empty());
+ result
+ }
+}
+
struct EvalCtxt<'a, 'tcx> {
infcx: &'a InferCtxt<'tcx>,
var_values: CanonicalVarValues<'tcx>,
self.infcx.tcx
}
- /// Creates a new evaluation context outside of the trait solver.
- ///
- /// With this solver making a canonical response doesn't make much sense.
- /// The `search_graph` for this solver has to be completely empty.
- fn new_outside_solver(
- infcx: &'a InferCtxt<'tcx>,
- search_graph: &'a mut search_graph::SearchGraph<'tcx>,
- ) -> EvalCtxt<'a, 'tcx> {
- assert!(search_graph.is_empty());
- EvalCtxt { infcx, var_values: CanonicalVarValues::dummy(), search_graph }
- }
-
#[instrument(level = "debug", skip(tcx, search_graph), ret)]
fn evaluate_canonical_goal(
tcx: TyCtxt<'tcx>,
param_env,
predicate: (def_id, substs, kind),
}),
+ ty::PredicateKind::ObjectSafe(trait_def_id) => {
+ self.compute_object_safe_goal(trait_def_id)
+ }
+ ty::PredicateKind::WellFormed(arg) => {
+ self.compute_well_formed_goal(Goal { param_env, predicate: arg })
+ }
ty::PredicateKind::Ambiguous => self.make_canonical_response(Certainty::AMBIGUOUS),
// FIXME: implement these predicates :)
- ty::PredicateKind::WellFormed(_)
- | ty::PredicateKind::ObjectSafe(_)
- | ty::PredicateKind::ConstEvaluatable(_)
- | ty::PredicateKind::ConstEquate(_, _) => {
+ ty::PredicateKind::ConstEvaluatable(_) | ty::PredicateKind::ConstEquate(_, _) => {
self.make_canonical_response(Certainty::Yes)
}
ty::PredicateKind::TypeWellFormedFromEnv(..) => {
Err(NoSolution)
}
}
+
+ fn compute_object_safe_goal(&mut self, trait_def_id: DefId) -> QueryResult<'tcx> {
+ if self.tcx().is_object_safe(trait_def_id) {
+ self.make_canonical_response(Certainty::Yes)
+ } else {
+ Err(NoSolution)
+ }
+ }
+
+ fn compute_well_formed_goal(
+ &mut self,
+ goal: Goal<'tcx, ty::GenericArg<'tcx>>,
+ ) -> QueryResult<'tcx> {
+ self.infcx.probe(|_| {
+ match crate::traits::wf::unnormalized_obligations(
+ self.infcx,
+ goal.param_env,
+ goal.predicate,
+ ) {
+ Some(obligations) => self.evaluate_all_and_make_canonical_response(
+ obligations.into_iter().map(|o| o.into()).collect(),
+ ),
+ None => self.make_canonical_response(Certainty::AMBIGUOUS),
+ }
+ })
+ }
}
impl<'tcx> EvalCtxt<'_, 'tcx> {
use rustc_errors::ErrorGuaranteed;
use rustc_hir::def::DefKind;
use rustc_hir::def_id::DefId;
+use rustc_hir::LangItem;
use rustc_infer::infer::InferCtxt;
use rustc_infer::traits::query::NoSolution;
use rustc_infer::traits::specialization_graph::LeafDef;
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_middle::ty::{ProjectionPredicate, TypeSuperVisitable, TypeVisitor};
use rustc_middle::ty::{ToPredicate, TypeVisitable};
-use rustc_span::DUMMY_SP;
+use rustc_span::{sym, DUMMY_SP};
use std::iter;
use std::ops::ControlFlow;
) -> QueryResult<'tcx> {
bug!("`Tuple` does not have an associated type: {:?}", goal);
}
+
+ fn consider_builtin_pointee_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx> {
+ let tcx = ecx.tcx();
+ ecx.infcx.probe(|_| {
+ let metadata_ty = match goal.predicate.self_ty().kind() {
+ ty::Bool
+ | ty::Char
+ | ty::Int(..)
+ | ty::Uint(..)
+ | ty::Float(..)
+ | ty::Array(..)
+ | ty::RawPtr(..)
+ | ty::Ref(..)
+ | ty::FnDef(..)
+ | ty::FnPtr(..)
+ | ty::Closure(..)
+ | ty::Infer(ty::IntVar(..) | ty::FloatVar(..))
+ | ty::Generator(..)
+ | ty::GeneratorWitness(..)
+ | ty::Never
+ | ty::Foreign(..) => tcx.types.unit,
+
+ ty::Error(e) => tcx.ty_error_with_guaranteed(*e),
+
+ ty::Str | ty::Slice(_) => tcx.types.usize,
+
+ ty::Dynamic(_, _, _) => {
+ let dyn_metadata = tcx.require_lang_item(LangItem::DynMetadata, None);
+ tcx.bound_type_of(dyn_metadata)
+ .subst(tcx, &[ty::GenericArg::from(goal.predicate.self_ty())])
+ }
+
+ ty::Alias(_, _) | ty::Param(_) | ty::Placeholder(..) => {
+ // FIXME(ptr_metadata): It would also be possible to return a `Ok(Ambig)` with no constraints.
+ let sized_predicate = ty::Binder::dummy(tcx.at(DUMMY_SP).mk_trait_ref(
+ LangItem::Sized,
+ [ty::GenericArg::from(goal.predicate.self_ty())],
+ ));
+
+ let mut nested_goals = ecx.infcx.eq(
+ goal.param_env,
+ goal.predicate.term.ty().unwrap(),
+ tcx.types.unit,
+ )?;
+ nested_goals.push(goal.with(tcx, sized_predicate));
+
+ return ecx.evaluate_all_and_make_canonical_response(nested_goals);
+ }
+
+ ty::Adt(def, substs) if def.is_struct() => {
+ match def.non_enum_variant().fields.last() {
+ None => tcx.types.unit,
+ Some(field_def) => {
+ let self_ty = field_def.ty(tcx, substs);
+ let new_goal = goal.with(
+ tcx,
+ ty::Binder::dummy(goal.predicate.with_self_ty(tcx, self_ty)),
+ );
+ return ecx.evaluate_all_and_make_canonical_response(vec![new_goal]);
+ }
+ }
+ }
+ ty::Adt(_, _) => tcx.types.unit,
+
+ ty::Tuple(elements) => match elements.last() {
+ None => tcx.types.unit,
+ Some(&self_ty) => {
+ let new_goal = goal.with(
+ tcx,
+ ty::Binder::dummy(goal.predicate.with_self_ty(tcx, self_ty)),
+ );
+ return ecx.evaluate_all_and_make_canonical_response(vec![new_goal]);
+ }
+ },
+
+ ty::Infer(
+ ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_),
+ )
+ | ty::Bound(..) => bug!(
+ "unexpected self ty `{:?}` when normalizing `<T as Pointee>::Metadata`",
+ goal.predicate.self_ty()
+ ),
+ };
+
+ let nested_goals =
+ ecx.infcx.eq(goal.param_env, goal.predicate.term.ty().unwrap(), metadata_ty)?;
+ ecx.evaluate_all_and_make_canonical_response(nested_goals)
+ })
+ }
+
+ fn consider_builtin_future_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx> {
+ let self_ty = goal.predicate.self_ty();
+ let ty::Generator(def_id, substs, _) = *self_ty.kind() else {
+ return Err(NoSolution);
+ };
+
+ // Generators are not futures unless they come from `async` desugaring
+ let tcx = ecx.tcx();
+ if !tcx.generator_is_async(def_id) {
+ return Err(NoSolution);
+ }
+
+ let term = substs.as_generator().return_ty().into();
+
+ Self::consider_assumption(
+ ecx,
+ goal,
+ ty::Binder::dummy(ty::ProjectionPredicate {
+ projection_ty: ecx.tcx().mk_alias_ty(goal.predicate.def_id(), [self_ty]),
+ term,
+ })
+ .to_predicate(tcx),
+ )
+ }
+
+ fn consider_builtin_generator_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx> {
+ let self_ty = goal.predicate.self_ty();
+ let ty::Generator(def_id, substs, _) = *self_ty.kind() else {
+ return Err(NoSolution);
+ };
+
+ // `async`-desugared generators do not implement the generator trait
+ let tcx = ecx.tcx();
+ if tcx.generator_is_async(def_id) {
+ return Err(NoSolution);
+ }
+
+ let generator = substs.as_generator();
+
+ let name = tcx.associated_item(goal.predicate.def_id()).name;
+ let term = if name == sym::Return {
+ generator.return_ty().into()
+ } else if name == sym::Yield {
+ generator.yield_ty().into()
+ } else {
+ bug!("unexpected associated item `<{self_ty} as Generator>::{name}`")
+ };
+
+ Self::consider_assumption(
+ ecx,
+ goal,
+ ty::Binder::dummy(ty::ProjectionPredicate {
+ projection_ty: ecx
+ .tcx()
+ .mk_alias_ty(goal.predicate.def_id(), [self_ty, generator.resume_ty()]),
+ term,
+ })
+ .to_predicate(tcx),
+ )
+ }
}
/// This behavior is also implemented in `rustc_ty_utils` and in the old `project` code.
Err(NoSolution)
}
}
+
+ fn consider_builtin_pointee_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ _goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx> {
+ ecx.make_canonical_response(Certainty::Yes)
+ }
+
+ fn consider_builtin_future_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx> {
+ let ty::Generator(def_id, _, _) = *goal.predicate.self_ty().kind() else {
+ return Err(NoSolution);
+ };
+
+ // Generators are not futures unless they come from `async` desugaring
+ let tcx = ecx.tcx();
+ if !tcx.generator_is_async(def_id) {
+ return Err(NoSolution);
+ }
+
+ // Async generator unconditionally implement `Future`
+ ecx.make_canonical_response(Certainty::Yes)
+ }
+
+ fn consider_builtin_generator_candidate(
+ ecx: &mut EvalCtxt<'_, 'tcx>,
+ goal: Goal<'tcx, Self>,
+ ) -> QueryResult<'tcx> {
+ let self_ty = goal.predicate.self_ty();
+ let ty::Generator(def_id, substs, _) = *self_ty.kind() else {
+ return Err(NoSolution);
+ };
+
+ // `async`-desugared generators do not implement the generator trait
+ let tcx = ecx.tcx();
+ if tcx.generator_is_async(def_id) {
+ return Err(NoSolution);
+ }
+
+ let generator = substs.as_generator();
+ Self::consider_assumption(
+ ecx,
+ goal,
+ ty::Binder::dummy(
+ tcx.mk_trait_ref(goal.predicate.def_id(), [self_ty, generator.resume_ty()]),
+ )
+ .to_predicate(tcx),
+ )
+ }
}
impl<'tcx> EvalCtxt<'_, 'tcx> {
| ty::Never
| ty::Char => Ok(vec![]),
- ty::Placeholder(..)
- | ty::Dynamic(..)
+ ty::Dynamic(..)
| ty::Param(..)
| ty::Foreign(..)
| ty::Alias(ty::Projection, ..)
- | ty::Bound(..)
- | ty::Infer(ty::TyVar(_)) => Err(NoSolution),
+ | ty::Placeholder(..) => Err(NoSolution),
- ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => bug!(),
+ ty::Bound(..)
+ | ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
+ bug!("unexpected type `{ty}`")
+ }
ty::RawPtr(ty::TypeAndMut { ty: element_ty, .. }) | ty::Ref(_, element_ty, _) => {
Ok(vec![element_ty])
| ty::Foreign(..)
| ty::Alias(..)
| ty::Param(_)
- | ty::Infer(ty::TyVar(_)) => Err(NoSolution),
+ | ty::Placeholder(..) => Err(NoSolution),
- ty::Placeholder(..)
- | ty::Bound(..)
- | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => bug!(),
+ ty::Bound(..)
+ | ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
+ bug!("unexpected type `{ty}`")
+ }
ty::Tuple(tys) => Ok(tys.to_vec()),
| ty::Adt(_, _)
| ty::Alias(_, _)
| ty::Param(_)
- | ty::Infer(ty::TyVar(_)) => Err(NoSolution),
+ | ty::Placeholder(..) => Err(NoSolution),
- ty::Placeholder(..)
- | ty::Bound(..)
- | ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => bug!(),
+ ty::Bound(..)
+ | ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
+ bug!("unexpected type `{ty}`")
+ }
ty::Tuple(tys) => Ok(tys.to_vec()),
}
}
+// Returns a binder of the tupled inputs types and output type from a builtin callable type.
pub(crate) fn extract_tupled_inputs_and_output_from_callable<'tcx>(
tcx: TyCtxt<'tcx>,
self_ty: Ty<'tcx>,
| ty::Tuple(_)
| ty::Alias(_, _)
| ty::Param(_)
- | ty::Placeholder(_)
- | ty::Bound(_, _)
- | ty::Infer(_)
+ | ty::Placeholder(..)
+ | ty::Infer(ty::IntVar(_) | ty::FloatVar(_))
| ty::Error(_) => Err(NoSolution),
+
+ ty::Bound(..)
+ | ty::Infer(ty::TyVar(_) | ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => {
+ bug!("unexpected type `{self_ty}`")
+ }
}
}
use rustc_data_structures::fx::FxIndexSet;
use rustc_errors::Diagnostic;
use rustc_hir::def_id::{DefId, CRATE_DEF_ID, LOCAL_CRATE};
-use rustc_hir::CRATE_HIR_ID;
use rustc_infer::infer::{DefiningAnchor, InferCtxt, TyCtxtInferExt};
use rustc_infer::traits::util;
use rustc_middle::traits::specialization_graph::OverlapMode;
return false;
}
- let (body_id, body_def_id) = if let Some(body_def_id) = body_def_id.as_local() {
- (tcx.hir().local_def_id_to_hir_id(body_def_id), body_def_id)
- } else {
- (CRATE_HIR_ID, CRATE_DEF_ID)
- };
+ let body_def_id = body_def_id.as_local().unwrap_or(CRATE_DEF_ID);
let ocx = ObligationCtxt::new(&infcx);
let wf_tys = ocx.assumed_wf_types(param_env, DUMMY_SP, body_def_id);
let outlives_env = OutlivesEnvironment::with_bounds(
param_env,
Some(&infcx),
- infcx.implied_bounds_tys(param_env, body_id, wf_tys),
+ infcx.implied_bounds_tys(param_env, body_def_id, wf_tys),
);
infcx.process_registered_region_obligations(outlives_env.region_bound_pairs(), param_env);
let tcx = self.infcx.tcx;
let assumed_wf_types = tcx.assumed_wf_types(def_id);
let mut implied_bounds = FxIndexSet::default();
- let hir_id = tcx.hir().local_def_id_to_hir_id(def_id);
- let cause = ObligationCause::misc(span, hir_id);
+ let cause = ObligationCause::misc(span, def_id);
for ty in assumed_wf_types {
// FIXME(@lcnr): rustc currently does not check wf for types
// pre-normalization, meaning that implied bounds are sometimes
);
let predicates =
- tcx.predicates_of(obligation.cause.body_id.owner.to_def_id()).instantiate_identity(tcx);
+ tcx.predicates_of(obligation.cause.body_id.to_def_id()).instantiate_identity(tcx);
for obligation in elaborate_predicates_with_span(tcx, predicates.into_iter()) {
let kind = obligation.predicate.kind();
if let ty::PredicateKind::Clause(ty::Clause::Trait(trait_pred)) = kind.skip_binder()
err.note(s.as_str());
}
if let Some(ref s) = parent_label {
- let body = tcx
- .hir()
- .opt_local_def_id(obligation.cause.body_id)
- .unwrap_or_else(|| {
- tcx.hir().body_owner_def_id(hir::BodyId {
- hir_id: obligation.cause.body_id,
- })
- });
+ let body = obligation.cause.body_id;
err.span_label(tcx.def_span(body), s);
}
);
}
+ let body_hir_id =
+ self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id);
// Try to report a help message
if is_fn_trait
&& let Ok((implemented_kind, params)) = self.type_implements_fn_trait(
if !self.report_similar_impl_candidates(
impl_candidates,
trait_ref,
- obligation.cause.body_id,
+ body_hir_id,
&mut err,
true,
) {
self.report_similar_impl_candidates(
impl_candidates,
trait_ref,
- obligation.cause.body_id,
+ body_hir_id,
&mut err,
true,
);
predicate.to_opt_poly_trait_pred().unwrap(),
);
if impl_candidates.len() < 10 {
+ let hir =
+ self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id);
self.report_similar_impl_candidates(
impl_candidates,
trait_ref,
- body_id.map(|id| id.hir_id).unwrap_or(obligation.cause.body_id),
+ body_id.map(|id| id.hir_id).unwrap_or(hir),
&mut err,
false,
);
}
impl<'hir> FindExprBySpan<'hir> {
- fn new(span: Span) -> Self {
+ pub fn new(span: Span) -> Self {
Self { span, result: None, ty_result: None }
}
}
.unwrap_or_else(|| (trait_ref.def_id(), trait_ref.skip_binder().substs));
let trait_ref = trait_ref.skip_binder();
- let mut flags = vec![(
- sym::ItemContext,
- self.describe_enclosure(obligation.cause.body_id).map(|s| s.to_owned()),
- )];
+ let body_hir = self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id);
+ let mut flags =
+ vec![(sym::ItemContext, self.describe_enclosure(body_hir).map(|s| s.to_owned()))];
match obligation.cause.code() {
ObligationCauseCode::BuiltinDerivedObligation(..)
use crate::traits::{NormalizeExt, ObligationCtxt};
use hir::def::CtorOf;
-use hir::{Expr, HirId};
use rustc_data_structures::fx::FxHashSet;
use rustc_data_structures::stack::ensure_sufficient_stack;
use rustc_errors::{
use rustc_hir::intravisit::Visitor;
use rustc_hir::lang_items::LangItem;
use rustc_hir::{AsyncGeneratorKind, GeneratorKind, Node};
+use rustc_hir::{Expr, HirId};
use rustc_infer::infer::error_reporting::TypeErrCtxt;
use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind};
use rustc_infer::infer::{InferOk, LateBoundRegionConversionTime};
IsSuggestable, ToPredicate, Ty, TyCtxt, TypeAndMut, TypeFoldable, TypeFolder,
TypeSuperFoldable, TypeVisitable, TypeckResults,
};
+use rustc_span::def_id::LocalDefId;
use rustc_span::symbol::{sym, Ident, Symbol};
use rustc_span::{BytePos, DesugaringKind, ExpnKind, MacroKind, Span, DUMMY_SP};
use rustc_target::spec::abi;
err: &mut Diagnostic,
trait_pred: ty::PolyTraitPredicate<'tcx>,
associated_item: Option<(&'static str, Ty<'tcx>)>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
);
fn suggest_dereferences(
mut err: &mut Diagnostic,
trait_pred: ty::PolyTraitPredicate<'tcx>,
associated_ty: Option<(&'static str, Ty<'tcx>)>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
) {
let trait_pred = self.resolve_numeric_literals_with_default(trait_pred);
// FIXME: Add check for trait bound that is already present, particularly `?Sized` so we
// don't suggest `T: Sized + ?Sized`.
- let mut hir_id = body_id;
- while let Some(node) = self.tcx.hir().find(hir_id) {
+ let mut body_id = body_id;
+ while let Some(node) = self.tcx.hir().find_by_def_id(body_id) {
+ let hir_id = self.tcx.hir().local_def_id_to_hir_id(body_id);
match node {
hir::Node::Item(hir::Item {
ident,
_ => {}
}
-
- hir_id = self.tcx.hir().get_parent_item(hir_id).into();
+ body_id = self.tcx.local_parent(body_id);
}
}
trait_pred.self_ty(),
);
+ let body_hir_id = self.tcx.hir().local_def_id_to_hir_id(obligation.cause.body_id);
let Some((def_id_or_name, output, inputs)) = self.extract_callable_info(
- obligation.cause.body_id,
+ body_hir_id,
obligation.param_env,
self_ty,
) else { return false; };
span.remove_mark();
}
let mut expr_finder = FindExprBySpan::new(span);
- let Some(hir::Node::Expr(body)) = self.tcx.hir().find(obligation.cause.body_id) else { return; };
- expr_finder.visit_expr(&body);
+ let Some(body_id) = self.tcx.hir().maybe_body_owned_by(obligation.cause.body_id) else { return; };
+ let body = self.tcx.hir().body(body_id);
+ expr_finder.visit_expr(body.value);
let Some(expr) = expr_finder.result else { return; };
let Some(typeck) = &self.typeck_results else { return; };
let Some(ty) = typeck.expr_ty_adjusted_opt(expr) else { return; };
) -> bool {
let self_ty = self.resolve_vars_if_possible(trait_pred.self_ty());
let ty = self.tcx.erase_late_bound_regions(self_ty);
- let owner = self.tcx.hir().get_parent_item(obligation.cause.body_id);
- let Some(generics) = self.tcx.hir().get_generics(owner.def_id) else { return false };
+ let Some(generics) = self.tcx.hir().get_generics(obligation.cause.body_id) else { return false };
let ty::Ref(_, inner_ty, hir::Mutability::Not) = ty.kind() else { return false };
let ty::Param(param) = inner_ty.kind() else { return false };
let ObligationCauseCode::FunctionArgumentObligation { arg_hir_id, .. } = obligation.cause.code() else { return false };
/// Extracts information about a callable type for diagnostics. This is a
/// heuristic -- it doesn't necessarily mean that a type is always callable,
/// because the callable type must also be well-formed to be called.
+ // FIXME(vincenzopalazzo): move the HirId to a LocalDefId
fn extract_callable_info(
&self,
hir_id: HirId,
span.remove_mark();
}
let mut expr_finder = super::FindExprBySpan::new(span);
- let Some(hir::Node::Expr(body)) = self.tcx.hir().find(obligation.cause.body_id) else {
+ let Some(body_id) = self.tcx.hir().maybe_body_owned_by(obligation.cause.body_id) else {
return false;
};
- expr_finder.visit_expr(&body);
+ let body = self.tcx.hir().body(body_id);
+ expr_finder.visit_expr(body.value);
let mut maybe_suggest = |suggested_ty, count, suggestions| {
// Remapping bound vars here
let trait_pred_and_suggested_ty =
trait_pred: ty::PolyTraitPredicate<'tcx>,
) -> bool {
let hir = self.tcx.hir();
- let parent_node = hir.parent_id(obligation.cause.body_id);
- let node = hir.find(parent_node);
+ let node = hir.find_by_def_id(obligation.cause.body_id);
if let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, _, body_id), .. })) = node
&& let hir::ExprKind::Block(blk, _) = &hir.body(*body_id).value.kind
&& sig.decl.output.span().overlaps(span)
fn return_type_span(&self, obligation: &PredicateObligation<'tcx>) -> Option<Span> {
let hir = self.tcx.hir();
- let parent_node = hir.parent_id(obligation.cause.body_id);
- let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, ..), .. })) = hir.find(parent_node) else {
+ let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(sig, ..), .. })) = hir.find_by_def_id(obligation.cause.body_id) else {
return None;
};
}
let hir = self.tcx.hir();
- let fn_hir_id = hir.parent_id(obligation.cause.body_id);
- let node = hir.find(fn_hir_id);
+ let fn_hir_id = hir.local_def_id_to_hir_id(obligation.cause.body_id);
+ let node = hir.find_by_def_id(obligation.cause.body_id);
let Some(hir::Node::Item(hir::Item {
kind: hir::ItemKind::Fn(sig, _, body_id),
..
match liberated_sig.output().kind() {
ty::Dynamic(predicates, _, ty::Dyn) => {
- let cause = ObligationCause::misc(ret_ty.span, fn_hir_id);
+ let cause = ObligationCause::misc(ret_ty.span, obligation.cause.body_id);
let param_env = ty::ParamEnv::empty();
if !only_never_return {
}
let hir = self.tcx.hir();
- let parent_node = hir.parent_id(obligation.cause.body_id);
- let node = hir.find(parent_node);
+ let node = hir.find_by_def_id(obligation.cause.body_id);
if let Some(hir::Node::Item(hir::Item { kind: hir::ItemKind::Fn(_, _, body_id), .. })) =
node
{
trait_pred: ty::PolyTraitPredicate<'tcx>,
span: Span,
) {
- let body_hir_id = obligation.cause.body_id;
- let item_id = self.tcx.hir().parent_id(body_hir_id);
-
- if let Some(body_id) =
- self.tcx.hir().maybe_body_owned_by(self.tcx.hir().local_def_id(item_id))
- {
+ if let Some(body_id) = self.tcx.hir().maybe_body_owned_by(obligation.cause.body_id) {
let body = self.tcx.hir().body(body_id);
if let Some(hir::GeneratorKind::Async(_)) = body.generator_kind {
let future_trait = self.tcx.require_lang_item(LangItem::Future, None);
term: ty_var.into(),
},
)));
+ let body_def_id = self.tcx.hir().enclosing_body_owner(body_id);
// Add `<ExprTy as Iterator>::Item = _` obligation.
ocx.register_obligation(Obligation::misc(
- self.tcx, span, body_id, param_env, projection,
+ self.tcx,
+ span,
+ body_def_id,
+ param_env,
+ projection,
));
if ocx.select_where_possible().is_empty() {
// `ty_var` now holds the type that `Item` is for `ExprTy`.
use crate::traits::error_reporting::TypeErrCtxtExt as _;
use crate::traits::query::evaluate_obligation::InferCtxtExt as _;
use rustc_errors::ErrorGuaranteed;
-use rustc_hir as hir;
-use rustc_hir::def_id::DefId;
use rustc_middle::ty::fold::TypeFoldable;
use rustc_middle::ty::visit::TypeVisitable;
use rustc_middle::ty::{self, DefIdTree, ToPredicate, Ty, TyCtxt, TypeSuperVisitable};
use rustc_middle::ty::{InternalSubsts, SubstsRef};
+use rustc_span::def_id::{DefId, CRATE_DEF_ID};
use rustc_span::Span;
use std::fmt::Debug;
// We can use a dummy node-id here because we won't pay any mind
// to region obligations that arise (there shouldn't really be any
// anyhow).
- cause: ObligationCause::misc(span, hir::CRATE_HIR_ID),
+ cause: ObligationCause::misc(span, CRATE_DEF_ID),
recursion_depth: 0,
predicate: pred.to_predicate(infcx.tcx),
};
// that guess. While imperfect, I believe this is sound.
// FIXME(@lcnr): this function doesn't seem right.
+ //
// The handling of regions in this area of the code is terrible,
// see issue #29149. We should be able to improve on this with
// NLL.
let errors = fully_solve_obligation(infcx, obligation);
- // Note: we only assume something is `Copy` if we can
- // *definitively* show that it implements `Copy`. Otherwise,
- // assume it is move; linear is always ok.
match &errors[..] {
[] => true,
errors => {
use crate::traits::query::NoSolution;
use crate::traits::ObligationCause;
use rustc_data_structures::fx::FxIndexSet;
-use rustc_hir as hir;
-use rustc_hir::HirId;
use rustc_middle::ty::{self, ParamEnv, Ty};
+use rustc_span::def_id::LocalDefId;
pub use rustc_middle::traits::query::OutlivesBound;
fn implied_outlives_bounds(
&self,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
ty: Ty<'tcx>,
) -> Vec<OutlivesBound<'tcx>>;
fn implied_bounds_tys(
&'a self,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
tys: FxIndexSet<Ty<'tcx>>,
) -> Bounds<'a, 'tcx>;
}
fn implied_outlives_bounds(
&self,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
ty: Ty<'tcx>,
) -> Vec<OutlivesBound<'tcx>> {
- let span = self.tcx.hir().span(body_id);
+ let span = self.tcx.def_span(body_id);
let result = param_env
.and(type_op::implied_outlives_bounds::ImpliedOutlivesBounds { ty })
.fully_perform(self);
fn implied_bounds_tys(
&'a self,
param_env: ParamEnv<'tcx>,
- body_id: HirId,
+ body_id: LocalDefId,
tys: FxIndexSet<Ty<'tcx>>,
) -> Bounds<'a, 'tcx> {
tys.into_iter()
use crate::infer::InferCtxt;
use crate::traits;
use rustc_hir as hir;
-use rustc_hir::def_id::DefId;
use rustc_hir::lang_items::LangItem;
use rustc_middle::ty::subst::{GenericArg, GenericArgKind, SubstsRef};
use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitable};
-use rustc_span::Span;
+use rustc_span::def_id::{DefId, LocalDefId, CRATE_DEF_ID};
+use rustc_span::{Span, DUMMY_SP};
use std::iter;
/// Returns the set of obligations needed to make `arg` well-formed.
pub fn obligations<'tcx>(
infcx: &InferCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
recursion_depth: usize,
arg: GenericArg<'tcx>,
span: Span,
Some(result)
}
+/// Compute the predicates that are required for a type to be well-formed.
+///
+/// This is only intended to be used in the new solver, since it does not
+/// take into account recursion depth or proper error-reporting spans.
+pub fn unnormalized_obligations<'tcx>(
+ infcx: &InferCtxt<'tcx>,
+ param_env: ty::ParamEnv<'tcx>,
+ arg: GenericArg<'tcx>,
+) -> Option<Vec<traits::PredicateObligation<'tcx>>> {
+ if let ty::GenericArgKind::Lifetime(..) = arg.unpack() {
+ return Some(vec![]);
+ }
+
+ debug_assert_eq!(arg, infcx.resolve_vars_if_possible(arg));
+
+ let mut wf = WfPredicates {
+ tcx: infcx.tcx,
+ param_env,
+ body_id: CRATE_DEF_ID,
+ span: DUMMY_SP,
+ out: vec![],
+ recursion_depth: 0,
+ item: None,
+ };
+ wf.compute(arg);
+ Some(wf.out)
+}
+
/// Returns the obligations that make this trait reference
/// well-formed. For example, if there is a trait `Set` defined like
/// `trait Set<K:Eq>`, then the trait reference `Foo: Set<Bar>` is WF
pub fn trait_obligations<'tcx>(
infcx: &InferCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
trait_pred: &ty::TraitPredicate<'tcx>,
span: Span,
item: &'tcx hir::Item<'tcx>,
pub fn predicate_obligations<'tcx>(
infcx: &InferCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
predicate: ty::Predicate<'tcx>,
span: Span,
) -> Vec<traits::PredicateObligation<'tcx>> {
struct WfPredicates<'tcx> {
tcx: TyCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
- body_id: hir::HirId,
+ body_id: LocalDefId,
span: Span,
out: Vec<traits::PredicateObligation<'tcx>>,
recursion_depth: usize,
//! Do not call this query directory. See
//! [`rustc_trait_selection::traits::query::type_op::implied_outlives_bounds`].
-use rustc_hir as hir;
use rustc_infer::infer::canonical::{self, Canonical};
use rustc_infer::infer::outlives::components::{push_outlives_components, Component};
use rustc_infer::infer::TyCtxtInferExt;
use rustc_infer::traits::query::OutlivesBound;
use rustc_middle::ty::query::Providers;
use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitable};
+use rustc_span::def_id::CRATE_DEF_ID;
use rustc_span::source_map::DUMMY_SP;
use rustc_trait_selection::infer::InferCtxtBuilderExt;
use rustc_trait_selection::traits::query::{CanonicalTyGoal, Fallible, NoSolution};
// FIXME(@lcnr): It's not really "always fine", having fewer implied
// bounds can be backward incompatible, e.g. #101951 was caused by
// us not dealing with inference vars in `TypeOutlives` predicates.
- let obligations =
- wf::obligations(ocx.infcx, param_env, hir::CRATE_HIR_ID, 0, arg, DUMMY_SP)
- .unwrap_or_default();
+ let obligations = wf::obligations(ocx.infcx, param_env, CRATE_DEF_ID, 0, arg, DUMMY_SP)
+ .unwrap_or_default();
// While these predicates should all be implied by other parts of
// the program, they are still relevant as they may constrain
use rustc_middle::ty::{self, FnSig, Lift, PolyFnSig, Ty, TyCtxt, TypeFoldable};
use rustc_middle::ty::{ParamEnvAnd, Predicate};
use rustc_middle::ty::{UserSelfTy, UserSubsts, UserType};
+use rustc_span::def_id::CRATE_DEF_ID;
use rustc_span::{Span, DUMMY_SP};
use rustc_trait_selection::infer::InferCtxtBuilderExt;
use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt;
// FIXME(#104764): We should check well-formedness before normalization.
let predicate = ty::Binder::dummy(ty::PredicateKind::WellFormed(user_ty.into()));
ocx.register_obligation(Obligation::new(ocx.infcx.tcx, cause, param_env, predicate));
-
Ok(())
}
let span = if span == DUMMY_SP { predicate_span } else { span };
let cause = ObligationCause::new(
span,
- hir::CRATE_HIR_ID,
+ CRATE_DEF_ID,
ObligationCauseCode::AscribeUserTypeProvePredicate(predicate_span),
);
let instantiated_predicate =
let impl_self_ty = ocx.normalize(&cause, param_env, impl_self_ty);
ocx.eq(&cause, param_env, self_ty, impl_self_ty)?;
-
let predicate = ty::Binder::dummy(ty::PredicateKind::WellFormed(impl_self_ty.into()));
ocx.register_obligation(Obligation::new(tcx, cause.clone(), param_env, predicate));
}
}
// Only pointer types handled below.
- let Scalar::Initialized { value: Pointer, valid_range} = scalar else { return };
+ let Scalar::Initialized { value: Pointer(_), valid_range} = scalar else { return };
if !valid_range.contains(0) {
attrs.set(ArgAttribute::NonNull);
}
let size = arg.layout.size;
- if arg.layout.is_unsized() || size > Pointer.size(cx) {
+ if arg.layout.is_unsized() || size > Pointer(AddressSpace::DATA).size(cx) {
arg.make_indirect();
} else {
// We want to pass small aggregates as immediates, but using
ty::FloatTy::F64 => F64,
}),
ty::FnPtr(_) => {
- let mut ptr = scalar_unit(Pointer);
+ let mut ptr = scalar_unit(Pointer(dl.instruction_address_space));
ptr.valid_range_mut().start = 1;
tcx.intern_layout(LayoutS::scalar(cx, ptr))
}
// Potentially-wide pointers.
ty::Ref(_, pointee, _) | ty::RawPtr(ty::TypeAndMut { ty: pointee, .. }) => {
- let mut data_ptr = scalar_unit(Pointer);
+ let mut data_ptr = scalar_unit(Pointer(AddressSpace::DATA));
if !ty.is_unsafe_ptr() {
data_ptr.valid_range_mut().start = 1;
}
}
ty::Slice(_) | ty::Str => scalar_unit(Int(dl.ptr_sized_integer(), false)),
ty::Dynamic(..) => {
- let mut vtable = scalar_unit(Pointer);
+ let mut vtable = scalar_unit(Pointer(AddressSpace::DATA));
vtable.valid_range_mut().start = 1;
vtable
}
ty::Dynamic(_, _, ty::DynStar) => {
let mut data = scalar_unit(Int(dl.ptr_sized_integer(), false));
data.valid_range_mut().start = 0;
- let mut vtable = scalar_unit(Pointer);
+ let mut vtable = scalar_unit(Pointer(AddressSpace::DATA));
vtable.valid_range_mut().start = 1;
tcx.intern_layout(cx.scalar_pair(data, vtable))
}
use rustc_data_structures::fx::FxIndexSet;
use rustc_hir as hir;
-use rustc_hir::def_id::DefId;
use rustc_middle::ty::{self, Binder, Predicate, PredicateKind, ToPredicate, Ty, TyCtxt};
use rustc_session::config::TraitSolver;
+use rustc_span::def_id::{DefId, CRATE_DEF_ID};
use rustc_trait_selection::traits;
fn sized_constraint_for_ty<'tcx>(
constness,
);
- let body_id =
- local_did.and_then(|id| tcx.hir().maybe_body_owned_by(id).map(|body| body.hir_id));
- let body_id = match body_id {
- Some(id) => id,
- None if hir_id.is_some() => hir_id.unwrap(),
- _ => hir::CRATE_HIR_ID,
- };
-
+ let body_id = local_did.unwrap_or(CRATE_DEF_ID);
let cause = traits::ObligationCause::misc(tcx.def_span(def_id), body_id);
traits::normalize_param_env_or_error(tcx, unnormalized_env, cause)
}
use crate::fmt::{self, Debug, Display};
use crate::marker::{PhantomData, Unsize};
use crate::mem;
-use crate::ops::{CoerceUnsized, Deref, DerefMut};
+use crate::ops::{CoerceUnsized, Deref, DerefMut, DispatchFromDyn};
use crate::ptr::{self, NonNull};
mod lazy;
#[unstable(feature = "coerce_unsized", issue = "18598")]
impl<T: CoerceUnsized<U>, U> CoerceUnsized<Cell<U>> for Cell<T> {}
+// Allow types that wrap `Cell` to also implement `DispatchFromDyn`
+// and become object safe method receivers.
+// Note that currently `Cell` itself cannot be a method receiver
+// because it does not implement Deref.
+// In other words:
+// `self: Cell<&Self>` won't work
+// `self: CellWrapper<Self>` becomes possible
+#[unstable(feature = "dispatch_from_dyn", issue = "none")]
+impl<T: DispatchFromDyn<U>, U> DispatchFromDyn<Cell<U>> for Cell<T> {}
+
impl<T> Cell<[T]> {
/// Returns a `&[Cell<T>]` from a `&Cell<[T]>`
///
#[unstable(feature = "coerce_unsized", issue = "18598")]
impl<T: CoerceUnsized<U>, U> CoerceUnsized<UnsafeCell<U>> for UnsafeCell<T> {}
+// Allow types that wrap `UnsafeCell` to also implement `DispatchFromDyn`
+// and become object safe method receivers.
+// Note that currently `UnsafeCell` itself cannot be a method receiver
+// because it does not implement Deref.
+// In other words:
+// `self: UnsafeCell<&Self>` won't work
+// `self: UnsafeCellWrapper<Self>` becomes possible
+#[unstable(feature = "dispatch_from_dyn", issue = "none")]
+impl<T: DispatchFromDyn<U>, U> DispatchFromDyn<UnsafeCell<U>> for UnsafeCell<T> {}
+
/// [`UnsafeCell`], but [`Sync`].
///
/// This is just an `UnsafeCell`, except it implements `Sync`
//#[unstable(feature = "sync_unsafe_cell", issue = "95439")]
impl<T: CoerceUnsized<U>, U> CoerceUnsized<SyncUnsafeCell<U>> for SyncUnsafeCell<T> {}
+// Allow types that wrap `SyncUnsafeCell` to also implement `DispatchFromDyn`
+// and become object safe method receivers.
+// Note that currently `SyncUnsafeCell` itself cannot be a method receiver
+// because it does not implement Deref.
+// In other words:
+// `self: SyncUnsafeCell<&Self>` won't work
+// `self: SyncUnsafeCellWrapper<Self>` becomes possible
+#[unstable(feature = "dispatch_from_dyn", issue = "none")]
+//#[unstable(feature = "sync_unsafe_cell", issue = "95439")]
+impl<T: DispatchFromDyn<U>, U> DispatchFromDyn<SyncUnsafeCell<U>> for SyncUnsafeCell<T> {}
+
#[allow(unused)]
fn assert_coerce_unsized(
a: UnsafeCell<&i32>,
OnceCell { inner: UnsafeCell::new(Some(value)) }
}
}
+
+// Just like for `Cell<T>` this isn't needed, but results in nicer error messages.
+#[unstable(feature = "once_cell", issue = "74465")]
+impl<T> !Sync for OnceCell<T> {}
/// family of functions. It contains a function to format the given value. At
/// compile time it is ensured that the function and the value have the correct
/// types, and then this struct is used to canonicalize arguments to one type.
+#[cfg_attr(not(bootstrap), lang = "format_argument")]
#[derive(Copy, Clone)]
#[allow(missing_debug_implementations)]
#[unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")]
/// This struct represents the unsafety of constructing an `Arguments`.
/// It exists, rather than an unsafe function, in order to simplify the expansion
/// of `format_args!(..)` and reduce the scope of the `unsafe` block.
+#[cfg_attr(not(bootstrap), lang = "format_unsafe_arg")]
#[allow(missing_debug_implementations)]
#[doc(hidden)]
#[unstable(feature = "fmt_internals", reason = "internal to format_args!", issue = "none")]
/// ```
///
/// [`format()`]: ../../std/fmt/fn.format.html
+#[cfg_attr(not(bootstrap), lang = "format_arguments")]
#[stable(feature = "rust1", since = "1.0.0")]
-#[cfg_attr(not(test), rustc_diagnostic_item = "Arguments")]
#[derive(Copy, Clone)]
pub struct Arguments<'a> {
// Format string pieces to print.
}
impl<'a> Arguments<'a> {
- /// Get the formatted string, if it has no arguments to be formatted.
+ /// Get the formatted string, if it has no arguments to be formatted at runtime.
///
- /// This can be used to avoid allocations in the most trivial case.
+ /// This can be used to avoid allocations in some cases.
+ ///
+ /// # Guarantees
+ ///
+ /// For `format_args!("just a literal")`, this function is guaranteed to
+ /// return `Some("just a literal")`.
+ ///
+ /// For most cases with placeholders, this function will return `None`.
+ ///
+ /// However, the compiler may perform optimizations that can cause this
+ /// function to return `Some(_)` even if the format string contains
+ /// placeholders. For example, `format_args!("Hello, {}!", "world")` may be
+ /// optimized to `format_args!("Hello, world!")`, such that `as_str()`
+ /// returns `Some("Hello, world!")`.
+ ///
+ /// The behavior for anything but the trivial case (without placeholders)
+ /// is not guaranteed, and should not be relied upon for anything other
+ /// than optimization.
///
/// # Examples
///
/// ```rust
/// assert_eq!(format_args!("hello").as_str(), Some("hello"));
/// assert_eq!(format_args!("").as_str(), Some(""));
- /// assert_eq!(format_args!("{}", 1).as_str(), None);
+ /// assert_eq!(format_args!("{:?}", std::env::current_dir()).as_str(), None);
/// ```
#[stable(feature = "fmt_as_str", since = "1.52.0")]
#[rustc_const_unstable(feature = "const_arguments_as_str", issue = "103900")]
//! these can be statically allocated and are slightly optimized for the runtime
#![allow(missing_debug_implementations)]
+#[cfg_attr(not(bootstrap), lang = "format_placeholder")]
#[derive(Copy, Clone)]
+// FIXME: Rename this to Placeholder
pub struct Argument {
pub position: usize,
pub format: FormatSpec,
pub width: Count,
}
+impl Argument {
+ #[inline(always)]
+ pub const fn new(
+ position: usize,
+ fill: char,
+ align: Alignment,
+ flags: u32,
+ precision: Count,
+ width: Count,
+ ) -> Self {
+ Self { position, format: FormatSpec { fill, align, flags, precision, width } }
+ }
+}
+
/// Possible alignments that can be requested as part of a formatting directive.
+#[cfg_attr(not(bootstrap), lang = "format_alignment")]
#[derive(Copy, Clone, PartialEq, Eq)]
pub enum Alignment {
/// Indication that contents should be left-aligned.
}
/// Used by [width](https://doc.rust-lang.org/std/fmt/#width) and [precision](https://doc.rust-lang.org/std/fmt/#precision) specifiers.
+#[cfg_attr(not(bootstrap), lang = "format_count")]
#[derive(Copy, Clone)]
pub enum Count {
/// Specified with a literal number, stores the value
//!
//! #### Statements
//! - Assign statements work via normal Rust assignment.
-//! - [`Retag`] statements have an associated function.
+//! - [`Retag`], [`StorageLive`], [`StorageDead`], [`Deinit`] statements have an associated function.
//!
//! #### Rvalues
//!
//! - Operands implicitly convert to `Use` rvalues.
//! - `&`, `&mut`, `addr_of!`, and `addr_of_mut!` all work to create their associated rvalue.
-//! - [`Discriminant`] has an associated function.
+//! - [`Discriminant`] and [`Len`] have associated functions.
+//! - Unary and binary operations use their normal Rust syntax - `a * b`, `!c`, etc.
+//! - Checked binary operations are represented by wrapping the associated binop in [`Checked`].
+//! - Array repetition syntax (`[foo; 10]`) creates the associated rvalue.
//!
//! #### Terminators
//!
define!("mir_call", fn Call<T>(place: T, goto: BasicBlock, call: T));
define!("mir_storage_live", fn StorageLive<T>(local: T));
define!("mir_storage_dead", fn StorageDead<T>(local: T));
+define!("mir_deinit", fn Deinit<T>(place: T));
+define!("mir_checked", fn Checked<T>(binop: T) -> (T, bool));
+define!("mir_len", fn Len<T>(place: T) -> usize);
define!("mir_retag", fn Retag<T>(place: T));
define!("mir_move", fn Move<T>(place: T) -> T);
define!("mir_static", fn Static<T>(s: T) -> &'static T);
#[cfg_attr(not(test), rustc_diagnostic_item = "Sync")]
#[lang = "sync"]
#[rustc_on_unimplemented(
+ on(
+ _Self = "std::cell::OnceCell<T>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::OnceLock` instead"
+ ),
+ on(
+ _Self = "std::cell::Cell<u8>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU8` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<u16>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU16` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<u32>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU32` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<u64>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU64` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<usize>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicUsize` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<i8>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI8` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<i16>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI16` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<i32>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<i64>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI64` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<isize>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicIsize` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<bool>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicBool` instead",
+ ),
+ on(
+ _Self = "std::cell::Cell<T>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock`",
+ ),
+ on(
+ _Self = "std::cell::RefCell<T>",
+ note = "if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead",
+ ),
message = "`{Self}` cannot be shared between threads safely",
label = "`{Self}` cannot be shared between threads safely"
)]
/// This computes the same value that [`offset_from`](#method.offset_from)
/// would compute, but with the added precondition that the offset is
/// guaranteed to be non-negative. This method is equivalent to
- /// `usize::from(self.offset_from(origin)).unwrap_unchecked()`,
+ /// `usize::try_from(self.offset_from(origin)).unwrap_unchecked()`,
/// but it provides slightly more information to the optimizer, which can
/// sometimes allow it to optimize slightly better with some backends.
///
/// This computes the same value that [`offset_from`](#method.offset_from)
/// would compute, but with the added precondition that the offset is
/// guaranteed to be non-negative. This method is equivalent to
- /// `usize::from(self.offset_from(origin)).unwrap_unchecked()`,
+ /// `usize::try_from(self.offset_from(origin)).unwrap_unchecked()`,
/// but it provides slightly more information to the optimizer, which can
/// sometimes allow it to optimize slightly better with some backends.
///
///
/// This is both the input and output of `#[proc_macro]`, `#[proc_macro_attribute]`
/// and `#[proc_macro_derive]` definitions.
+#[rustc_diagnostic_item = "TokenStream"]
#[stable(feature = "proc_macro_lib", since = "1.15.0")]
#[derive(Clone)]
pub struct TokenStream(Option<bridge::client::TokenStream>);
/// A line-column pair representing the start or end of a `Span`.
#[unstable(feature = "proc_macro_span", issue = "54725")]
-#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
pub struct LineColumn {
/// The 1-indexed line in the source file on which the span starts or ends (inclusive).
#[unstable(feature = "proc_macro_span", issue = "54725")]
) -> Result<(), SendTimeoutError<T>> {
let token = &mut Token::default();
loop {
- // Try sending a message several times.
- let backoff = Backoff::new();
- loop {
- if self.start_send(token) {
- let res = unsafe { self.write(token, msg) };
- return res.map_err(SendTimeoutError::Disconnected);
- }
-
- if backoff.is_completed() {
- break;
- } else {
- backoff.spin_light();
- }
+ // Try sending a message.
+ if self.start_send(token) {
+ let res = unsafe { self.write(token, msg) };
+ return res.map_err(SendTimeoutError::Disconnected);
}
if let Some(d) = deadline {
pub(crate) fn recv(&self, deadline: Option<Instant>) -> Result<T, RecvTimeoutError> {
let token = &mut Token::default();
loop {
+ // Try receiving a message.
if self.start_recv(token) {
let res = unsafe { self.read(token) };
return res.map_err(|_| RecvTimeoutError::Disconnected);
/// Backs off using lightweight spinning.
///
- /// This method should be used for:
- /// - Retrying an operation because another thread made progress. i.e. on CAS failure.
- /// - Waiting for an operation to complete by spinning optimistically for a few iterations
- /// before falling back to parking the thread (see `Backoff::is_completed`).
+ /// This method should be used for retrying an operation because another thread made
+ /// progress. i.e. on CAS failure.
#[inline]
pub fn spin_light(&self) {
let step = self.step.get().min(SPIN_LIMIT);
self.step.set(self.step.get() + 1);
}
-
- /// Returns `true` if quadratic backoff has completed and parking the thread is advised.
- #[inline]
- pub fn is_completed(&self) -> bool {
- self.step.get() > SPIN_LIMIT
- }
}
// Note, however, that we run on lots older linuxes, as well as cross
// compiling from a newer linux to an older linux, so we also have a
// fallback implementation to use as well.
-#[cfg(any(
- target_os = "linux",
- target_os = "fuchsia",
- target_os = "redox",
- target_os = "emscripten"
-))]
-#[cfg_attr(target_family = "wasm", allow(unused))] // might remain unused depending on target details (e.g. wasm32-unknown-emscripten)
+#[cfg(any(target_os = "linux", target_os = "fuchsia", target_os = "redox"))]
pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) {
use crate::mem;
use crate::sys_common::thread_local_dtor::register_dtor_fallback;
}
}
-#[cfg(any(target_os = "vxworks", target_os = "horizon"))]
+#[cfg(any(target_os = "vxworks", target_os = "horizon", target_os = "emscripten"))]
+#[cfg_attr(target_family = "wasm", allow(unused))] // might remain unused depending on target details (e.g. wasm32-unknown-emscripten)
pub unsafe fn register_dtor(t: *mut u8, dtor: unsafe extern "C" fn(*mut u8)) {
use crate::sys_common::thread_local_dtor::register_dtor_fallback;
register_dtor_fallback(t, dtor);
println!("avx512dq: {:?}", is_x86_feature_detected!("avx512dq"));
println!("avx512er: {:?}", is_x86_feature_detected!("avx512er"));
println!("avx512f: {:?}", is_x86_feature_detected!("avx512f"));
- println!("avx512gfni: {:?}", is_x86_feature_detected!("avx512gfni"));
println!("avx512ifma: {:?}", is_x86_feature_detected!("avx512ifma"));
println!("avx512pf: {:?}", is_x86_feature_detected!("avx512pf"));
- println!("avx512vaes: {:?}", is_x86_feature_detected!("avx512vaes"));
println!("avx512vbmi2: {:?}", is_x86_feature_detected!("avx512vbmi2"));
println!("avx512vbmi: {:?}", is_x86_feature_detected!("avx512vbmi"));
println!("avx512vl: {:?}", is_x86_feature_detected!("avx512vl"));
println!("avx512vnni: {:?}", is_x86_feature_detected!("avx512vnni"));
println!("avx512vp2intersect: {:?}", is_x86_feature_detected!("avx512vp2intersect"));
- println!("avx512vpclmulqdq: {:?}", is_x86_feature_detected!("avx512vpclmulqdq"));
println!("avx512vpopcntdq: {:?}", is_x86_feature_detected!("avx512vpopcntdq"));
println!("avx: {:?}", is_x86_feature_detected!("avx"));
println!("bmi1: {:?}", is_x86_feature_detected!("bmi1"));
println!("f16c: {:?}", is_x86_feature_detected!("f16c"));
println!("fma: {:?}", is_x86_feature_detected!("fma"));
println!("fxsr: {:?}", is_x86_feature_detected!("fxsr"));
+ println!("gfni: {:?}", is_x86_feature_detected!("gfni"));
println!("lzcnt: {:?}", is_x86_feature_detected!("lzcnt"));
//println!("movbe: {:?}", is_x86_feature_detected!("movbe")); // movbe is unsupported as a target feature
println!("pclmulqdq: {:?}", is_x86_feature_detected!("pclmulqdq"));
println!("sse: {:?}", is_x86_feature_detected!("sse"));
println!("ssse3: {:?}", is_x86_feature_detected!("ssse3"));
println!("tbm: {:?}", is_x86_feature_detected!("tbm"));
+ println!("vaes: {:?}", is_x86_feature_detected!("vaes"));
+ println!("vpclmulqdq: {:?}", is_x86_feature_detected!("vpclmulqdq"));
println!("xsave: {:?}", is_x86_feature_detected!("xsave"));
println!("xsavec: {:?}", is_x86_feature_detected!("xsavec"));
println!("xsaveopt: {:?}", is_x86_feature_detected!("xsaveopt"));
-Subproject commit 790411f93c4b5eada3c23abb4c9a063fb0b24d99
+Subproject commit a0c30f3e3c75adcd6ee7efc94014ebcead61c507
// FIXME: Copied from librustc_ast until linkage errors are resolved. Issue #47566
fn is_nightly() -> bool {
// Whether this is a feature-staged build, i.e., on the beta or stable channel
- let disable_unstable_features = option_env!("CFG_DISABLE_UNSTABLE_FEATURES").is_some();
+ let disable_unstable_features =
+ option_env!("CFG_DISABLE_UNSTABLE_FEATURES").map(|s| s != "0").unwrap_or(false);
// Whether we should enable unstable features for bootstrapping
let bootstrap = env::var("RUSTC_BOOTSTRAP").is_ok();
let mut build_lock;
let _build_lock_guard;
if cfg!(any(unix, windows)) {
- build_lock = fd_lock::RwLock::new(t!(std::fs::File::create(config.out.join("lock"))));
+ let path = config.out.join("lock");
+ build_lock = fd_lock::RwLock::new(t!(std::fs::File::create(&path)));
_build_lock_guard = match build_lock.try_write() {
Ok(lock) => lock,
err => {
- println!("warning: build directory locked, waiting for lock");
drop(err);
+ if let Some(pid) = get_lock_owner(&path) {
+ println!("warning: build directory locked by process {pid}, waiting for lock");
+ } else {
+ println!("warning: build directory locked, waiting for lock");
+ }
t!(build_lock.write())
}
};
Some(msg)
}
+
+/// Get the PID of the process which took the write lock by
+/// parsing `/proc/locks`.
+#[cfg(target_os = "linux")]
+fn get_lock_owner(f: &std::path::Path) -> Option<u64> {
+ use std::fs::File;
+ use std::io::{BufRead, BufReader};
+ use std::os::unix::fs::MetadataExt;
+
+ let lock_inode = std::fs::metadata(f).ok()?.ino();
+ let lockfile = File::open("/proc/locks").ok()?;
+ BufReader::new(lockfile).lines().find_map(|line| {
+ // pid--vvvvvv vvvvvvv--- inode
+ // 21: FLOCK ADVISORY WRITE 359238 08:02:3719774 0 EOF
+ let line = line.ok()?;
+ let parts = line.split_whitespace().collect::<Vec<_>>();
+ let (pid, inode) = (parts[4].parse::<u64>().ok()?, &parts[5]);
+ let inode = inode.rsplit_once(':')?.1.parse::<u64>().ok()?;
+ if inode == lock_inode { Some(pid) } else { None }
+ })
+}
+
+#[cfg(not(target_os = "linux"))]
+fn get_lock_owner(_: &std::path::Path) -> Option<u64> {
+ // FIXME: Implement on other OS's
+ None
+}
"Cargo.toml",
"Cargo.lock",
];
- let src_dirs = ["src", "compiler", "library"];
+ let src_dirs = ["src", "compiler", "library", "tests"];
copy_src_dirs(builder, &builder.src, &src_dirs, &[], &plain_dst_src);
fmt_type(ty, f, use_absolute, cx)?;
write!(f, ")")
}
- clean::Generic(..) => {
- primitive_link(
- f,
- PrimitiveType::Reference,
- &format!("{}{}{}", amp, lt, m),
- cx,
- )?;
- fmt_type(ty, f, use_absolute, cx)
+ clean::Generic(name) => {
+ primitive_link(f, PrimitiveType::Reference, &format!("{amp}{lt}{m}{name}"), cx)
}
_ => {
write!(f, "{}{}{}", amp, lt, m)?;
.rustdoc .example-wrap > pre {
margin: 0;
flex-grow: 1;
- overflow-x: auto;
+ overflow: auto hidden;
}
.rustdoc .example-wrap > pre.example-line-numbers,
position: relative;
}
-.setting-line .radio-line input,
-.setting-line .settings-toggle input {
+.setting-radio input, .setting-check input {
margin-right: 0.3em;
height: 1.2rem;
width: 1.2rem;
-webkit-appearance: none;
cursor: pointer;
}
-.setting-line .radio-line input {
+.setting-radio input {
border-radius: 50%;
}
-.setting-line .settings-toggle input:checked {
+.setting-check input:checked {
content: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40">\
<path d="M7,25L17,32L33,12" fill="none" stroke="black" stroke-width="5"/>\
<path d="M7,23L17,30L33,10" fill="none" stroke="white" stroke-width="5"/></svg>');
}
-.setting-line .radio-line input + span,
-.setting-line .settings-toggle span {
+.setting-radio span, .setting-check span {
padding-bottom: 1px;
}
-.radio-line .choice {
+.setting-radio {
margin-top: 0.1em;
margin-bottom: 0.1em;
min-width: 3.8em;
align-items: center;
cursor: pointer;
}
-.radio-line .choice + .choice {
+.setting-radio + .setting-radio {
margin-left: 0.5em;
}
-.settings-toggle {
+.setting-check {
position: relative;
width: 100%;
margin-right: 20px;
cursor: pointer;
}
-.setting-line .radio-line input:checked {
+.setting-radio input:checked {
box-shadow: inset 0 0 0 3px var(--main-background-color);
background-color: var(--settings-input-color);
}
-.setting-line .settings-toggle input:checked {
+.setting-check input:checked {
background-color: var(--settings-input-color);
}
-.setting-line .radio-line input:focus,
-.setting-line .settings-toggle input:focus {
+.setting-radio input:focus, .setting-check input:focus {
box-shadow: 0 0 1px 1px var(--settings-input-color);
}
/* In here we combine both `:focus` and `:checked` properties. */
-.setting-line .radio-line input:checked:focus {
+.setting-radio input:checked:focus {
box-shadow: inset 0 0 0 3px var(--main-background-color),
0 0 2px 2px var(--settings-input-color);
}
-.setting-line .radio-line input:hover,
-.setting-line .settings-toggle input:hover {
+.setting-radio input:hover, .setting-check input:hover {
border-color: var(--settings-input-color) !important;
}
}
function showLightAndDark() {
- removeClass(document.getElementById("preferred-light-theme").parentElement, "hidden");
- removeClass(document.getElementById("preferred-dark-theme").parentElement, "hidden");
+ removeClass(document.getElementById("preferred-light-theme"), "hidden");
+ removeClass(document.getElementById("preferred-dark-theme"), "hidden");
}
function hideLightAndDark() {
- addClass(document.getElementById("preferred-light-theme").parentElement, "hidden");
- addClass(document.getElementById("preferred-dark-theme").parentElement, "hidden");
+ addClass(document.getElementById("preferred-light-theme"), "hidden");
+ addClass(document.getElementById("preferred-dark-theme"), "hidden");
}
function updateLightAndDark() {
toggle.onkeyup = handleKey;
toggle.onkeyrelease = handleKey;
});
- onEachLazy(settingsElement.getElementsByClassName("select-wrapper"), elem => {
- const select = elem.getElementsByTagName("select")[0];
- const settingId = select.id;
- const settingValue = getSettingValue(settingId);
- if (settingValue !== null) {
- select.value = settingValue;
- }
- select.onchange = function() {
- changeSetting(this.id, this.value);
- };
- });
onEachLazy(settingsElement.querySelectorAll("input[type=\"radio\"]"), elem => {
const settingId = elem.name;
let settingValue = getSettingValue(settingId);
let output = "";
for (const setting of settings) {
- output += "<div class=\"setting-line\">";
const js_data_name = setting["js_name"];
const setting_name = setting["name"];
if (setting["options"] !== undefined) {
// This is a select setting.
output += `\
-<div class="radio-line" id="${js_data_name}">
- <div class="setting-name">${setting_name}</div>
-<div class="choices">`;
+<div class="setting-line" id="${js_data_name}">
+ <div class="setting-radio-name">${setting_name}</div>
+ <div class="setting-radio-choices">`;
onEach(setting["options"], option => {
const checked = option === setting["default"] ? " checked" : "";
const full = `${js_data_name}-${option.replace(/ /g,"-")}`;
output += `\
-<label for="${full}" class="choice">
- <input type="radio" name="${js_data_name}"
- id="${full}" value="${option}"${checked}>
- <span>${option}</span>
-</label>`;
+ <label for="${full}" class="setting-radio">
+ <input type="radio" name="${js_data_name}"
+ id="${full}" value="${option}"${checked}>
+ <span>${option}</span>
+ </label>`;
});
- output += "</div></div>";
+ output += `\
+ </div>
+</div>`;
} else {
// This is a checkbox toggle.
const checked = setting["default"] === true ? " checked" : "";
output += `\
-<label class="settings-toggle">\
- <input type="checkbox" id="${js_data_name}"${checked}>\
- <span class="label">${setting_name}</span>\
-</label>`;
+<div class="setting-line">\
+ <label class="setting-check">\
+ <input type="checkbox" id="${js_data_name}"${checked}>\
+ <span>${setting_name}</span>\
+ </label>\
+</div>`;
}
- output += "</div>";
}
return output;
}
sess.fatal("Compilation failed, aborting rustdoc");
}
- let global_ctxt = abort_on_err(queries.global_ctxt(), sess);
+ let mut global_ctxt = abort_on_err(queries.global_ctxt(), sess);
global_ctxt.enter(|tcx| {
let (krate, render_opts, mut cache) = sess.time("run_global_ctxt", || {
-Subproject commit 985d561f0bb9b76ec043a2b12511790ec7a2b954
+Subproject commit 3c5af6bed9a1a243a693e8e22ee2486bd5b82a6c
};
use clippy_utils::msrvs::{self, Msrv};
use clippy_utils::source::snippet_opt;
-use clippy_utils::ty::{implements_trait, is_type_diagnostic_item};
+use clippy_utils::ty::{implements_trait, is_type_lang_item};
use if_chain::if_chain;
use itertools::Itertools;
use rustc_errors::{
Applicability,
SuggestionStyle::{CompletelyHidden, ShowCode},
};
-use rustc_hir::{Expr, ExprKind, HirId, QPath};
+use rustc_hir::{Expr, ExprKind, HirId, LangItem, QPath};
use rustc_lint::{LateContext, LateLintPass, LintContext};
use rustc_middle::ty::adjustment::{Adjust, Adjustment};
use rustc_middle::ty::Ty;
);
}
- if is_type_diagnostic_item(cx, param_ty, sym::Arguments) && !arg.format.is_default_for_trait() {
+ if is_type_lang_item(cx, param_ty, LangItem::FormatArguments) && !arg.format.is_default_for_trait() {
span_lint_and_then(
cx,
UNUSED_FORMAT_SPECS,
let send_trait = cx.tcx.get_diagnostic_item(sym::Send).unwrap();
let span = decl.output.span();
let infcx = cx.tcx.infer_ctxt().build();
- let cause = traits::ObligationCause::misc(span, hir_id);
+ let def_id = cx.tcx.hir().local_def_id(hir_id);
+ let cause = traits::ObligationCause::misc(span, def_id);
let send_errors = traits::fully_solve_bound(&infcx, cause, cx.param_env, ret_ty, send_trait);
if !send_errors.is_empty() {
span_lint_and_then(
&& let output_ty = return_ty(cx, item.hir_id())
&& let local_def_id = cx.tcx.hir().local_def_id(item.hir_id())
&& Inherited::build(cx.tcx, local_def_id).enter(|inherited| {
- let fn_ctxt = FnCtxt::new(inherited, cx.param_env, item.hir_id());
+ let fn_ctxt = FnCtxt::new(inherited, cx.param_env, local_def_id);
fn_ctxt.can_coerce(ty, output_ty)
}) {
if has_lifetime(output_ty) && has_lifetime(ty) {
let local_def_id = hir_id.owner.def_id;
Inherited::build(cx.tcx, local_def_id).enter(|inherited| {
- let fn_ctxt = FnCtxt::new(inherited, cx.param_env, hir_id);
+ let fn_ctxt = FnCtxt::new(inherited, cx.param_env, local_def_id);
// If we already have errors, we can't be sure we can pointer cast.
assert!(
#![allow(clippy::similar_names)] // `expr` and `expn`
-use crate::is_path_diagnostic_item;
use crate::source::snippet_opt;
use crate::visitors::{for_each_expr, Descend};
use itertools::{izip, Either, Itertools};
use rustc_ast::ast::LitKind;
use rustc_hir::intravisit::{walk_expr, Visitor};
-use rustc_hir::{self as hir, Expr, ExprField, ExprKind, HirId, Node, QPath};
+use rustc_hir::{self as hir, Expr, ExprField, ExprKind, HirId, LangItem, Node, QPath, TyKind};
use rustc_lexer::unescape::unescape_literal;
use rustc_lexer::{tokenize, unescape, LiteralKind, TokenKind};
use rustc_lint::LateContext;
// ArgumentV1::from_usize(<val>)
if let ExprKind::Call(callee, [val]) = expr.kind
&& let ExprKind::Path(QPath::TypeRelative(ty, _)) = callee.kind
- && let hir::TyKind::Path(QPath::Resolved(_, path)) = ty.kind
- && path.segments.last().unwrap().ident.name == sym::ArgumentV1
+ && let TyKind::Path(QPath::LangItem(LangItem::FormatArgument, _, _)) = ty.kind
{
let val_idx = if val.span.ctxt() == expr.span.ctxt()
&& let ExprKind::Field(_, field) = val.kind
impl<'tcx> Visitor<'tcx> for ParamPosition {
fn visit_expr_field(&mut self, field: &'tcx ExprField<'tcx>) {
- fn parse_count(expr: &Expr<'_>) -> Option<usize> {
- // ::core::fmt::rt::v1::Count::Param(1usize),
- if let ExprKind::Call(ctor, [val]) = expr.kind
- && let ExprKind::Path(QPath::Resolved(_, path)) = ctor.kind
- && path.segments.last()?.ident.name == sym::Param
- && let ExprKind::Lit(lit) = &val.kind
- && let LitKind::Int(pos, _) = lit.node
- {
- Some(pos as usize)
- } else {
- None
- }
- }
-
match field.ident.name {
sym::position => {
if let ExprKind::Lit(lit) = &field.expr.kind
}
}
+fn parse_count(expr: &Expr<'_>) -> Option<usize> {
+ // <::core::fmt::rt::v1::Count>::Param(1usize),
+ if let ExprKind::Call(ctor, [val]) = expr.kind
+ && let ExprKind::Path(QPath::TypeRelative(_, path)) = ctor.kind
+ && path.ident.name == sym::Param
+ && let ExprKind::Lit(lit) = &val.kind
+ && let LitKind::Int(pos, _) = lit.node
+ {
+ Some(pos as usize)
+ } else {
+ None
+ }
+}
+
/// Parses the `fmt` arg of `Arguments::new_v1_formatted(pieces, args, fmt, _)`
fn parse_rt_fmt<'tcx>(fmt_arg: &'tcx Expr<'tcx>) -> Option<impl Iterator<Item = ParamPosition> + 'tcx> {
if let ExprKind::AddrOf(.., array) = fmt_arg.kind
&& let ExprKind::Array(specs) = array.kind
{
Some(specs.iter().map(|spec| {
- let mut position = ParamPosition::default();
- position.visit_expr(spec);
- position
+ if let ExprKind::Call(f, args) = spec.kind
+ && let ExprKind::Path(QPath::TypeRelative(ty, f)) = f.kind
+ && let TyKind::Path(QPath::LangItem(LangItem::FormatPlaceholder, _, _)) = ty.kind
+ && f.ident.name == sym::new
+ && let [position, _fill, _align, _flags, precision, width] = args
+ && let ExprKind::Lit(position) = &position.kind
+ && let LitKind::Int(position, _) = position.node {
+ ParamPosition {
+ value: position as usize,
+ width: parse_count(width),
+ precision: parse_count(precision),
+ }
+ } else {
+ ParamPosition::default()
+ }
}))
} else {
None
// ::core::fmt::Arguments::new_v1_formatted(pieces, args, fmt, _unsafe_arg)
if let ExprKind::Call(callee, [pieces, args, rest @ ..]) = expr.kind
&& let ExprKind::Path(QPath::TypeRelative(ty, seg)) = callee.kind
- && is_path_diagnostic_item(cx, ty, sym::Arguments)
+ && let TyKind::Path(QPath::LangItem(LangItem::FormatArguments, _, _)) = ty.kind
&& matches!(seg.ident.as_str(), "new_v1" | "new_v1_formatted")
{
let format_string = FormatString::new(cx, pieces)?;
| ast::ExprKind::Repeat(..)
| ast::ExprKind::Ret(..)
| ast::ExprKind::Yeet(..)
+ | ast::ExprKind::FormatArgs(..)
| ast::ExprKind::Struct(..)
| ast::ExprKind::Try(..)
| ast::ExprKind::TryBlock(..)
--- /dev/null
+name: Diff Check
+on:
+ workflow_dispatch:
+ inputs:
+ clone_url:
+ description: 'Git url of a rustfmt fork to compare against the latest master rustfmt'
+ required: true
+ branch_name:
+ description: 'Name of the feature branch on the forked repo'
+ required: true
+ commit_hash:
+ description: 'Optional commit hash from the feature branch'
+ required: false
+ rustfmt_configs:
+ description: 'Optional comma separated list of rustfmt config options to pass when running the feature branch'
+ required: false
+
+jobs:
+ diff_check:
+ runs-on: ubuntu-latest
+
+ steps:
+ - name: checkout
+ uses: actions/checkout@v3
+
+ - name: install rustup
+ run: |
+ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs > rustup-init.sh
+ sh rustup-init.sh -y --default-toolchain none
+ rustup target add x86_64-unknown-linux-gnu
+
+ - name: check diff
+ run: bash ${GITHUB_WORKSPACE}/ci/check_diff.sh ${{ github.event.inputs.clone_url }} ${{ github.event.inputs.branch_name }} ${{ github.event.inputs.commit_hash }} ${{ github.event.inputs.rustfmt_configs }}
tempdir,
futures-rs,
rust-clippy,
- failure,
]
include:
# Allowed Failures
# Original comment was: temporal build failure due to breaking changes in the nightly compiler
- integration: rust-semverver
allow-failure: true
- # Can be moved back to include section after https://github.com/rust-lang-nursery/failure/pull/298 is merged
- - integration: failure
- allow-failure: true
steps:
- name: checkout
## [Unreleased]
+## [1.5.2] 2023-01-24
+
+### Fixed
+
+- Resolve issue when comments are found within const generic defaults in unit structs [#5668](https://github.com/rust-lang/rustfmt/issues/5668)
+- Resolve issue when block comments are found within trait generics [#5358](https://github.com/rust-lang/rustfmt/issues/5358)
+- Correctly handle alignment of comments containing unicode characters [#5504](https://github.com/rust-lang/rustfmt/issues/5504)
+- Properly indent a single generic bound that requires being written across multiple lines [#4689](https://github.com/rust-lang/rustfmt/issues/4689) (n.b. this change is version gated and will only appear when the `version` configuration option is set to `Two`)
+
+### Changed
+
+- Renamed `fn_args_layout` configuration option to `fn_params_layout` [#4149](https://github.com/rust-lang/rustfmt/issues/4149). Note that `fn_args_layout` has only been soft deprecated: `fn_args_layout` will continue to work without issue, but rustfmt will display a warning to encourage users to switch to the new name
+
+### Added
+
+- New configuration option (`skip_macro_invocations`)[https://rust-lang.github.io/rustfmt/?version=master&search=#skip_macro_invocations] [#5347](https://github.com/rust-lang/rustfmt/pull/5347) that can be used to globally define a single enumerated list of macro calls that rustfmt should skip formatting. rustfmt [currently also supports this via a custom tool attribute](https://github.com/rust-lang/rustfmt#tips), however, these cannot be used in all contexts because [custom inner attributes are unstable](https://github.com/rust-lang/rust/issues/54726)
+
+### Misc
+
+- rustfmt now internally supports the ability to have both stable and unstable variants of a configuration option [#5378](https://github.com/rust-lang/rustfmt/issues/5378). This ability will allow the rustfmt team to make certain configuration options available on stable toolchains more quickly because we no longer have to wait for _every_ variant to be stable-ready before stabilizing _any_ variant.
+
+### Install/Download Options
+- **rustup (nightly)** - nightly-2023-01-24
+- **GitHub Release Binaries** - [Release v1.5.2](https://github.com/rust-lang/rustfmt/releases/tag/v1.5.2)
+- **Build from source** - [Tag v1.5.2](https://github.com/rust-lang/rustfmt/tree/v1.5.2), see instructions for how to [install rustfmt from source][install-from-source]
+
## [1.5.1] 2022-06-24
**N.B** A bug was introduced in v1.5.0/nightly-2022-06-15 which modified formatting. If you happened to run rustfmt over your code with one of those ~10 nightlies it's possible you may have seen formatting changes, and you may see additional changes after this fix since that bug has now been reverted.
- Fix formatting of raw string literals #2983
- Handle chain with try operators with spaces #2986
- Use correct shape in Visual tuple rewriting #2987
-- Impove formatting of arguments with `visual_style = "Visual"` option #2988
+- Improve formatting of arguments with `visual_style = "Visual"` option #2988
- Change `print_diff` to output the correct line number 992b179
- Propagate errors about failing to rewrite a macro 6f318e3
- Handle formatting of long function signature #3010
[[package]]
name = "rustfmt-config_proc_macro"
-version = "0.2.0"
+version = "0.3.0"
dependencies = [
"proc-macro2",
"quote",
[[package]]
name = "rustfmt-nightly"
-version = "1.5.1"
+version = "1.5.2"
dependencies = [
"annotate-snippets",
"anyhow",
[package]
name = "rustfmt-nightly"
-version = "1.5.1"
+version = "1.5.2"
description = "Tool to find and fix Rust formatting issues"
repository = "https://github.com/rust-lang/rustfmt"
readme = "README.md"
unicode-width = "0.1"
unicode_categories = "0.1"
-rustfmt-config_proc_macro = { version = "0.2", path = "config_proc_macro" }
+rustfmt-config_proc_macro = { version = "0.3", path = "config_proc_macro" }
# A noop dependency that changes in the Rust repository, it's a bit of a hack.
# See the `src/tools/rustc-workspace-hack/README.md` file in `rust-lang/rust`
# Configuring Rustfmt
-Rustfmt is designed to be very configurable. You can create a TOML file called `rustfmt.toml` or `.rustfmt.toml`, place it in the project or any other parent directory and it will apply the options in that file. If none of these directories contain such a file, both your home directory and a directory called `rustfmt` in your [global config directory](https://docs.rs/dirs/1.0.4/dirs/fn.config_dir.html) (e.g. `.config/rustfmt/`) are checked as well.
+Rustfmt is designed to be very configurable. You can create a TOML file called `rustfmt.toml` or `.rustfmt.toml`, place it in the project or any other parent directory and it will apply the options in that file. If none of these directories contain such a file, both your home directory and a directory called `rustfmt` in your [global config directory](https://docs.rs/dirs/4.0.0/dirs/fn.config_dir.html) (e.g. `.config/rustfmt/`) are checked as well.
A possible content of `rustfmt.toml` or `.rustfmt.toml` might look like this:
## `comment_width`
-Maximum length of comments. No effect unless`wrap_comments = true`.
+Maximum length of comments. No effect unless `wrap_comments = true`.
- **Default value**: `80`
- **Possible values**: any positive integer
#### `0` (default):
```rust
-enum Bar {
+enum Foo {
A = 0,
Bb = 1,
RandomLongVariantGoesHere = 10,
## `fn_args_layout`
-Control the layout of arguments in a function
+This option is deprecated and has been renamed to `fn_params_layout` to better communicate that
+it affects the layout of parameters in function signatures.
- **Default value**: `"Tall"`
- **Possible values**: `"Compressed"`, `"Tall"`, `"Vertical"`
}
```
+See also [`fn_params_layout`](#fn_params_layout)
+
## `fn_call_width`
Maximum width of the args of a function call before falling back to vertical formatting.
See also [`max_width`](#max_width) and [`use_small_heuristics`](#use_small_heuristics)
+## `fn_params_layout`
+
+Control the layout of parameters in function signatures.
+
+- **Default value**: `"Tall"`
+- **Possible values**: `"Compressed"`, `"Tall"`, `"Vertical"`
+- **Stable**: Yes
+
+#### `"Tall"` (default):
+
+```rust
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: Consectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ );
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: Consectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ ) {
+ // body
+ }
+}
+```
+
+#### `"Compressed"`:
+
+```rust
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(
+ ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: Consectetur,
+ adipiscing: Adipiscing, elit: Elit,
+ );
+
+ fn lorem(
+ ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: Consectetur,
+ adipiscing: Adipiscing, elit: Elit,
+ ) {
+ // body
+ }
+}
+```
+
+#### `"Vertical"`:
+
+```rust
+trait Lorem {
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ );
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ ) {
+ // body
+ }
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: Consectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ );
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: Consectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ ) {
+ // body
+ }
+}
+```
+
+
## `fn_single_line`
Put single-expression functions on a single line
See also [`format_macro_matchers`](#format_macro_matchers).
+## `skip_macro_invocations`
+
+Skip formatting the bodies of macro invocations with the following names.
+
+rustfmt will not format any macro invocation for macros with names set in this list.
+Including the special value "*" will prevent any macro invocations from being formatted.
+
+Note: This option does not have any impact on how rustfmt formats macro definitions.
+
+- **Default value**: `[]`
+- **Possible values**: a list of macro name idents, `["name_0", "name_1", ..., "*"]`
+- **Stable**: No (tracking issue: [#5346](https://github.com/rust-lang/rustfmt/issues/5346))
+
+#### `[]` (default):
+
+rustfmt will follow its standard approach to formatting macro invocations.
+
+No macro invocations will be skipped based on their name. More information about rustfmt's standard macro invocation formatting behavior can be found in [#5437](https://github.com/rust-lang/rustfmt/discussions/5437).
+
+```rust
+lorem!(
+ const _: u8 = 0;
+);
+
+ipsum!(
+ const _: u8 = 0;
+);
+```
+
+#### `["lorem"]`:
+
+The named macro invocations will be skipped.
+
+```rust
+lorem!(
+ const _: u8 = 0;
+);
+
+ipsum!(
+ const _: u8 = 0;
+);
+```
+
+#### `["*"]`:
+
+The special selector `*` will skip all macro invocations.
+
+```rust
+lorem!(
+ const _: u8 = 0;
+);
+
+ipsum!(
+ const _: u8 = 0;
+);
+```
## `format_strings`
## `imports_granularity`
-How imports should be grouped into `use` statements. Imports will be merged or split to the configured level of granularity.
+Controls how imports are structured in `use` statements. Imports will be merged or split to the configured level of granularity.
+
+Similar to other `import` related configuration options, this option operates within the bounds of user-defined groups of imports. See [`group_imports`](#group_imports) for more information on import groups.
+
+Note that rustfmt will not modify the granularity of imports containing comments if doing so could potentially lose or misplace said comments.
- **Default value**: `Preserve`
- **Possible values**: `Preserve`, `Crate`, `Module`, `Item`, `One`
- **Stable**: No (tracking issue: [#4991](https://github.com/rust-lang/rustfmt/issues/4991))
-Note that rustfmt will not modify the granularity of imports containing comments if doing so could potentially lose or misplace said comments.
#### `Preserve` (default):
# Stabilising an Option
-In this Section, we describe how to stabilise an option of the rustfmt's configration.
+In this Section, we describe how to stabilise an option of the rustfmt's configuration.
## Conditions
set "RUSTFLAGS=-D warnings"
+set "RUSTFMT_CI=1"
:: Print version information
rustc -Vv || exit /b 1
set -euo pipefail
export RUSTFLAGS="-D warnings"
+export RUSTFMT_CI=1
# Print version information
rustc -Vv
--- /dev/null
+#!/bin/bash
+
+function print_usage() {
+ echo "usage check_diff REMOTE_REPO FEATURE_BRANCH [COMMIT_HASH] [OPTIONAL_RUSTFMT_CONFIGS]"
+}
+
+if [ $# -le 1 ]; then
+ print_usage
+ exit 1
+fi
+
+REMOTE_REPO=$1
+FEATURE_BRANCH=$2
+OPTIONAL_COMMIT_HASH=$3
+OPTIONAL_RUSTFMT_CONFIGS=$4
+
+# OUTPUT array used to collect all the status of running diffs on various repos
+STATUSES=()
+
+# Clone a git repository and cd into it.
+#
+# Parameters:
+# $1: git clone url
+# $2: directory where the repo should be cloned
+function clone_repo() {
+ GIT_TERMINAL_PROMPT=0 git clone --quiet $1 --depth 1 $2 && cd $2
+}
+
+# Initialize Git submoduels for the repo.
+#
+# Parameters
+# $1: list of directories to initialize
+function init_submodules() {
+ git submodule update --init $1
+}
+
+# Run rusfmt with the --check flag to see if a diff is produced.
+#
+# Parameters:
+# $1: Path to a rustfmt binary
+# $2: Output file path for the diff
+# $3: Any additional configuration options to pass to rustfmt
+#
+# Globlas:
+# $OPTIONAL_RUSTFMT_CONFIGS: Optional configs passed to the script from $4
+function create_diff() {
+ local config;
+ if [ -z "$3" ]; then
+ config="--config=error_on_line_overflow=false,error_on_unformatted=false"
+ else
+ config="--config=error_on_line_overflow=false,error_on_unformatted=false,$OPTIONAL_RUSTFMT_CONFIGS"
+ fi
+
+ for i in `find . | grep "\.rs$"`
+ do
+ $1 --unstable-features --skip-children --check --color=always $config $i >> $2 2>/dev/null
+ done
+}
+
+# Run the master rustfmt binary and the feature branch binary in the current directory and compare the diffs
+#
+# Parameters
+# $1: Name of the repository (used for logging)
+#
+# Globlas:
+# $RUSFMT_BIN: Path to the rustfmt master binary. Created when running `compile_rustfmt`
+# $FEATURE_BIN: Path to the rustfmt feature binary. Created when running `compile_rustfmt`
+# $OPTIONAL_RUSTFMT_CONFIGS: Optional configs passed to the script from $4
+function check_diff() {
+ echo "running rustfmt (master) on $1"
+ create_diff $RUSFMT_BIN rustfmt_diff.txt
+
+ echo "running rustfmt (feature) on $1"
+ create_diff $FEATURE_BIN feature_diff.txt $OPTIONAL_RUSTFMT_CONFIGS
+
+ echo "checking diff"
+ local diff;
+ # we don't add color to the diff since we added color when running rustfmt --check.
+ # tail -n + 6 removes the git diff header info
+ # cut -c 2- removes the leading diff characters("+","-"," ") from running git diff.
+ # Again, the diff output we care about was already added when we ran rustfmt --check
+ diff=$(
+ git --no-pager diff --color=never \
+ --unified=0 --no-index rustfmt_diff.txt feature_diff.txt 2>&1 | tail -n +6 | cut -c 2-
+ )
+
+ if [ -z "$diff" ]; then
+ echo "no diff detected between rustfmt and the feture branch"
+ return 0
+ else
+ echo "$diff"
+ return 1
+ fi
+}
+
+# Compiles and produces two rustfmt binaries.
+# One for the current master, and another for the feature branch
+#
+# Parameters:
+# $1: Directory where rustfmt will be cloned
+#
+# Globlas:
+# $REMOTE_REPO: Clone URL to the rustfmt fork that we want to test
+# $FEATURE_BRANCH: Name of the feature branch
+# $OPTIONAL_COMMIT_HASH: Optional commit hash that will be checked out if provided
+function compile_rustfmt() {
+ RUSTFMT_REPO="https://github.com/rust-lang/rustfmt.git"
+ clone_repo $RUSTFMT_REPO $1
+ git remote add feature $REMOTE_REPO
+ git fetch feature $FEATURE_BRANCH
+
+ cargo build --release --bin rustfmt && cp target/release/rustfmt $1/rustfmt
+ if [ -z "$OPTIONAL_COMMIT_HASH" ]; then
+ git switch $FEATURE_BRANCH
+ else
+ git switch $OPTIONAL_COMMIT_HASH --detach
+ fi
+ cargo build --release --bin rustfmt && cp target/release/rustfmt $1/feature_rustfmt
+ RUSFMT_BIN=$1/rustfmt
+ FEATURE_BIN=$1/feature_rustfmt
+}
+
+# Check the diff for running rustfmt and the feature branch on all the .rs files in the repo.
+#
+# Parameters
+# $1: Clone URL for the repo
+# $2: Name of the repo (mostly used for logging)
+# $3: Path to any submodules that should be initialized
+function check_repo() {
+ WORKDIR=$(pwd)
+ REPO_URL=$1
+ REPO_NAME=$2
+ SUBMODULES=$3
+
+ local tmp_dir;
+ tmp_dir=$(mktemp -d -t $REPO_NAME-XXXXXXXX)
+ clone_repo $REPO_URL $tmp_dir
+
+ if [ ! -z "$SUBMODULES" ]; then
+ init_submodules $SUBMODULES
+ fi
+
+ check_diff $REPO_NAME
+ # append the status of running `check_diff` to the STATUSES array
+ STATUSES+=($?)
+
+ echo "removing tmp_dir $tmp_dir"
+ rm -rf $tmp_dir
+ cd $WORKDIR
+}
+
+function main() {
+ tmp_dir=$(mktemp -d -t rustfmt-XXXXXXXX)
+ echo Created tmp_dir $tmp_dir
+
+ compile_rustfmt $tmp_dir
+
+ # run checks
+ check_repo "https://github.com/rust-lang/rust.git" rust-lang-rust
+ check_repo "https://github.com/rust-lang/cargo.git" cargo
+ check_repo "https://github.com/rust-lang/miri.git" miri
+ check_repo "https://github.com/rust-lang/rust-analyzer.git" rust-analyzer
+ check_repo "https://github.com/bitflags/bitflags.git" bitflags
+ check_repo "https://github.com/rust-lang/log.git" log
+ check_repo "https://github.com/rust-lang/mdBook.git" mdBook
+ check_repo "https://github.com/rust-lang/packed_simd.git" packed_simd
+ check_repo "https://github.com/rust-lang/rust-semverver.git" check_repo
+ check_repo "https://github.com/Stebalien/tempfile.git" tempfile
+ check_repo "https://github.com/rust-lang/futures-rs.git" futures-rs
+ check_repo "https://github.com/dtolnay/anyhow.git" anyhow
+ check_repo "https://github.com/dtolnay/thiserror.git" thiserror
+ check_repo "https://github.com/dtolnay/syn.git" syn
+ check_repo "https://github.com/serde-rs/serde.git" serde
+ check_repo "https://github.com/rust-lang/rustlings.git" rustlings
+ check_repo "https://github.com/rust-lang/rustup.git" rustup
+ check_repo "https://github.com/SergioBenitez/Rocket.git" Rocket
+ check_repo "https://github.com/rustls/rustls.git" rustls
+ check_repo "https://github.com/rust-lang/rust-bindgen.git" rust-bindgen
+ check_repo "https://github.com/hyperium/hyper.git" hyper
+ check_repo "https://github.com/actix/actix.git" actix
+ check_repo "https://github.com/denoland/deno.git" denoland_deno
+
+ # cleanup temp dir
+ echo removing tmp_dir $tmp_dir
+ rm -rf $tmp_dir
+
+ # figure out the exit code
+ for status in ${STATUSES[@]}
+ do
+ if [ $status -eq 1 ]; then
+ echo "formatting diff found 💔"
+ return 1
+ fi
+ done
+
+ echo "no diff found 😊"
+}
+
+main
cd -
;;
crater)
- git clone --depth=1 https://github.com/rust-lang-nursery/${INTEGRATION}.git
+ git clone --depth=1 https://github.com/rust-lang/${INTEGRATION}.git
cd ${INTEGRATION}
show_head
check_fmt_with_lib_tests
cd -
;;
+ bitflags)
+ git clone --depth=1 https://github.com/bitflags/${INTEGRATION}.git
+ cd ${INTEGRATION}
+ show_head
+ check_fmt_with_all_tests
+ cd -
+ ;;
+ error-chain | tempdir)
+ git clone --depth=1 https://github.com/rust-lang-deprecated/${INTEGRATION}.git
+ cd ${INTEGRATION}
+ show_head
+ check_fmt_with_all_tests
+ cd -
+ ;;
*)
- git clone --depth=1 https://github.com/rust-lang-nursery/${INTEGRATION}.git
+ git clone --depth=1 https://github.com/rust-lang/${INTEGRATION}.git
cd ${INTEGRATION}
show_head
check_fmt_with_all_tests
[[package]]
name = "rustfmt-config_proc_macro"
-version = "0.2.0"
+version = "0.3.0"
dependencies = [
"proc-macro2",
"quote",
[package]
name = "rustfmt-config_proc_macro"
-version = "0.2.0"
+version = "0.3.0"
edition = "2018"
description = "A collection of procedural macros for rustfmt"
license = "Apache-2.0/MIT"
//! This module provides utilities for handling attributes on variants
-//! of `config_type` enum. Currently there are two types of attributes
-//! that could appear on the variants of `config_type` enum: `doc_hint`
-//! and `value`. Both comes in the form of name-value pair whose value
-//! is string literal.
+//! of `config_type` enum. Currently there are the following attributes
+//! that could appear on the variants of `config_type` enum:
+//!
+//! - `doc_hint`: name-value pair whose value is string literal
+//! - `value`: name-value pair whose value is string literal
+//! - `unstable_variant`: name only
/// Returns the value of the first `doc_hint` attribute in the given slice or
/// `None` if `doc_hint` attribute is not available.
attrs.iter().filter_map(config_value).next()
}
+/// Returns `true` if the there is at least one `unstable` attribute in the given slice.
+pub fn any_unstable_variant(attrs: &[syn::Attribute]) -> bool {
+ attrs.iter().any(is_unstable_variant)
+}
+
/// Returns a string literal value if the given attribute is `value`
/// attribute or `None` otherwise.
pub fn config_value(attr: &syn::Attribute) -> Option<String> {
is_attr_name_value(attr, "value")
}
+/// Returns `true` if the given attribute is an `unstable` attribute.
+pub fn is_unstable_variant(attr: &syn::Attribute) -> bool {
+ is_attr_path(attr, "unstable_variant")
+}
+
fn is_attr_name_value(attr: &syn::Attribute, name: &str) -> bool {
attr.parse_meta().ok().map_or(false, |meta| match meta {
syn::Meta::NameValue(syn::MetaNameValue { ref path, .. }) if path.is_ident(name) => true,
})
}
+fn is_attr_path(attr: &syn::Attribute, name: &str) -> bool {
+ attr.parse_meta().ok().map_or(false, |meta| match meta {
+ syn::Meta::Path(path) if path.is_ident(name) => true,
+ _ => false,
+ })
+}
+
fn get_name_value_str_lit(attr: &syn::Attribute, name: &str) -> Option<String> {
attr.parse_meta().ok().and_then(|meta| match meta {
syn::Meta::NameValue(syn::MetaNameValue {
use proc_macro2::TokenStream;
-use quote::quote;
+use quote::{quote, quote_spanned};
+use syn::spanned::Spanned;
use crate::attrs::*;
use crate::utils::*;
let metas = variant
.attrs
.iter()
- .filter(|attr| !is_doc_hint(attr) && !is_config_value(attr));
+ .filter(|attr| !is_doc_hint(attr) && !is_config_value(attr) && !is_unstable_variant(attr));
let attrs = fold_quote(metas, |meta| quote!(#meta));
let syn::Variant { ident, fields, .. } = variant;
quote!(#attrs #ident #fields)
}
+/// Return the correct syntax to pattern match on the enum variant, discarding all
+/// internal field data.
+fn fields_in_variant(variant: &syn::Variant) -> TokenStream {
+ // With thanks to https://stackoverflow.com/a/65182902
+ match &variant.fields {
+ syn::Fields::Unnamed(_) => quote_spanned! { variant.span() => (..) },
+ syn::Fields::Unit => quote_spanned! { variant.span() => },
+ syn::Fields::Named(_) => quote_spanned! { variant.span() => {..} },
+ }
+}
+
fn impl_doc_hint(ident: &syn::Ident, variants: &Variants) -> TokenStream {
let doc_hint = variants
.iter()
.collect::<Vec<_>>()
.join("|");
let doc_hint = format!("[{}]", doc_hint);
+
+ let variant_stables = variants
+ .iter()
+ .map(|v| (&v.ident, fields_in_variant(&v), !unstable_of_variant(v)));
+ let match_patterns = fold_quote(variant_stables, |(v, fields, stable)| {
+ quote! {
+ #ident::#v #fields => #stable,
+ }
+ });
quote! {
use crate::config::ConfigType;
impl ConfigType for #ident {
fn doc_hint() -> String {
#doc_hint.to_owned()
}
+ fn stable_variant(&self) -> bool {
+ match self {
+ #match_patterns
+ }
+ }
}
}
}
}
fn doc_hint_of_variant(variant: &syn::Variant) -> String {
- find_doc_hint(&variant.attrs).unwrap_or(variant.ident.to_string())
+ let mut text = find_doc_hint(&variant.attrs).unwrap_or(variant.ident.to_string());
+ if unstable_of_variant(&variant) {
+ text.push_str(" (unstable)")
+ };
+ text
}
fn config_value_of_variant(variant: &syn::Variant) -> String {
find_config_value(&variant.attrs).unwrap_or(variant.ident.to_string())
}
+fn unstable_of_variant(variant: &syn::Variant) -> bool {
+ any_unstable_variant(&variant.attrs)
+}
+
fn impl_serde(ident: &syn::Ident, variants: &Variants) -> TokenStream {
let arms = fold_quote(variants.iter(), |v| {
let v_ident = &v.ident;
TokenStream::from_str("").unwrap()
}
}
+
+/// Used to conditionally output the TokenStream for tests that should be run as part of rustfmts
+/// test suite, but should be ignored when running in the rust-lang/rust test suite.
+#[proc_macro_attribute]
+pub fn rustfmt_only_ci_test(_args: TokenStream, input: TokenStream) -> TokenStream {
+ if option_env!("RUSTFMT_CI").is_some() {
+ input
+ } else {
+ let mut token_stream = TokenStream::from_str("#[ignore]").unwrap();
+ token_stream.extend(input);
+ token_stream
+ }
+}
pub mod config {
pub trait ConfigType: Sized {
fn doc_hint() -> String;
+ fn stable_variant(&self) -> bool;
}
}
[toolchain]
-channel = "nightly-2022-06-21"
-components = ["rustc-dev"]
+channel = "nightly-2023-01-24"
+components = ["llvm-tools", "rustc-dev"]
} else {
let should_skip = self
.ident()
- .map(|s| context.skip_context.skip_attribute(s.name.as_str()))
+ .map(|s| context.skip_context.attributes.skip(s.name.as_str()))
.unwrap_or(false);
let prefix = attr_prefix(self);
// Determine if the source text is annotated with `#[rustfmt::skip::attributes(derive)]`
// or `#![rustfmt::skip::attributes(derive)]`
- let skip_derives = context.skip_context.skip_attribute("derive");
+ let skip_derives = context.skip_context.attributes.skip("derive");
// This is not just a simple map because we need to handle doc comments
// (where we take as many doc comment attributes as possible) and possibly
"l",
"files-with-diff",
"Prints the names of mismatched files that were formatted. Prints the names of \
- files that would be formated when used with `--check` mode. ",
+ files that would be formatted when used with `--check` mode. ",
);
opts.optmulti(
"",
Ok(())
}
"human" => Ok(()),
- _ => {
- return Err(format!(
- "invalid --message-format value: {}. Allowed values are: short|json|human",
- message_format
- ));
- }
+ _ => Err(format!(
+ "invalid --message-format value: {}. Allowed values are: short|json|human",
+ message_format
+ )),
}
}
.expect("failed to write to stderr");
}
-#[derive(Debug, Clone, Copy, PartialEq)]
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Verbosity {
Verbose,
Normal,
.is_err()
);
assert!(
- !Opts::command()
+ Opts::command()
.try_get_matches_from(&["test", "--", "--emit"])
- .is_err()
+ .is_ok()
);
}
use crate::shape::Shape;
use crate::source_map::SpanUtils;
use crate::utils::{
- self, first_line_width, last_line_extendable, last_line_width, mk_sp, rewrite_ident,
- trimmed_last_line_width, wrap_str,
+ self, filtered_str_fits, first_line_width, last_line_extendable, last_line_width, mk_sp,
+ rewrite_ident, trimmed_last_line_width, wrap_str,
};
+/// Provides the original input contents from the span
+/// of a chain element with trailing spaces trimmed.
+fn format_overflow_style(span: Span, context: &RewriteContext<'_>) -> Option<String> {
+ context.snippet_provider.span_to_snippet(span).map(|s| {
+ s.lines()
+ .map(|l| l.trim_end())
+ .collect::<Vec<_>>()
+ .join("\n")
+ })
+}
+
+fn format_chain_item(
+ item: &ChainItem,
+ context: &RewriteContext<'_>,
+ rewrite_shape: Shape,
+ allow_overflow: bool,
+) -> Option<String> {
+ if allow_overflow {
+ item.rewrite(context, rewrite_shape)
+ .or_else(|| format_overflow_style(item.span, context))
+ } else {
+ item.rewrite(context, rewrite_shape)
+ }
+}
+
+fn get_block_child_shape(
+ prev_ends_with_block: bool,
+ context: &RewriteContext<'_>,
+ shape: Shape,
+) -> Shape {
+ if prev_ends_with_block {
+ shape.block_indent(0)
+ } else {
+ shape.block_indent(context.config.tab_spaces())
+ }
+ .with_max_width(context.config)
+}
+
+fn get_visual_style_child_shape(
+ context: &RewriteContext<'_>,
+ shape: Shape,
+ offset: usize,
+ parent_overflowing: bool,
+) -> Option<Shape> {
+ if !parent_overflowing {
+ shape
+ .with_max_width(context.config)
+ .offset_left(offset)
+ .map(|s| s.visual_indent(0))
+ } else {
+ Some(shape.visual_indent(offset))
+ }
+}
+
pub(crate) fn rewrite_chain(
expr: &ast::Expr,
context: &RewriteContext<'_>,
// The number of children in the chain. This is not equal to `self.children.len()`
// because `self.children` will change size as we process the chain.
child_count: usize,
+ // Whether elements are allowed to overflow past the max_width limit
+ allow_overflow: bool,
}
impl<'a> ChainFormatterShared<'a> {
rewrites: Vec::with_capacity(chain.children.len() + 1),
fits_single_line: false,
child_count: chain.children.len(),
+ // TODO(calebcartwright)
+ allow_overflow: false,
}
}
}
}
+ fn format_children(&mut self, context: &RewriteContext<'_>, child_shape: Shape) -> Option<()> {
+ for item in &self.children[..self.children.len() - 1] {
+ let rewrite = format_chain_item(item, context, child_shape, self.allow_overflow)?;
+ self.rewrites.push(rewrite);
+ }
+ Some(())
+ }
+
// Rewrite the last child. The last child of a chain requires special treatment. We need to
// know whether 'overflowing' the last child make a better formatting:
//
}
fn child_shape(&self, context: &RewriteContext<'_>, shape: Shape) -> Option<Shape> {
- Some(
- if self.root_ends_with_block {
- shape.block_indent(0)
- } else {
- shape.block_indent(context.config.tab_spaces())
- }
- .with_max_width(context.config),
- )
+ let block_end = self.root_ends_with_block;
+ Some(get_block_child_shape(block_end, context, shape))
}
fn format_children(&mut self, context: &RewriteContext<'_>, child_shape: Shape) -> Option<()> {
- for item in &self.shared.children[..self.shared.children.len() - 1] {
- let rewrite = item.rewrite(context, child_shape)?;
- self.shared.rewrites.push(rewrite);
- }
- Some(())
+ self.shared.format_children(context, child_shape)
}
fn format_last_child(
.visual_indent(self.offset)
.sub_width(self.offset)?;
let rewrite = item.rewrite(context, child_shape)?;
- match wrap_str(rewrite, context.config.max_width(), shape) {
- Some(rewrite) => root_rewrite.push_str(&rewrite),
- None => {
- // We couldn't fit in at the visual indent, try the last
- // indent.
- let rewrite = item.rewrite(context, parent_shape)?;
- root_rewrite.push_str(&rewrite);
- self.offset = 0;
- }
+ if filtered_str_fits(&rewrite, context.config.max_width(), shape) {
+ root_rewrite.push_str(&rewrite);
+ } else {
+ // We couldn't fit in at the visual indent, try the last
+ // indent.
+ let rewrite = item.rewrite(context, parent_shape)?;
+ root_rewrite.push_str(&rewrite);
+ self.offset = 0;
}
self.shared.children = &self.shared.children[1..];
}
fn child_shape(&self, context: &RewriteContext<'_>, shape: Shape) -> Option<Shape> {
- shape
- .with_max_width(context.config)
- .offset_left(self.offset)
- .map(|s| s.visual_indent(0))
+ get_visual_style_child_shape(
+ context,
+ shape,
+ self.offset,
+ // TODO(calebcartwright): self.shared.permissibly_overflowing_parent,
+ false,
+ )
}
fn format_children(&mut self, context: &RewriteContext<'_>, child_shape: Shape) -> Option<()> {
- for item in &self.shared.children[..self.shared.children.len() - 1] {
- let rewrite = item.rewrite(context, child_shape)?;
- self.shared.rewrites.push(rewrite);
- }
- Some(())
+ self.shared.format_children(context, child_shape)
}
fn format_last_child(
use crate::config::file_lines::FileLines;
+use crate::config::macro_names::MacroSelectors;
use crate::config::options::{IgnoreList, WidthHeuristics};
/// Trait for types that can be used in `Config`.
/// Returns hint text for use in `Config::print_docs()`. For enum types, this is a
/// pipe-separated list of variants; for other types it returns `<type>`.
fn doc_hint() -> String;
+
+ /// Return `true` if the variant (i.e. value of this type) is stable.
+ ///
+ /// By default, return true for all values. Enums annotated with `#[config_type]`
+ /// are automatically implemented, based on the `#[unstable_variant]` annotation.
+ fn stable_variant(&self) -> bool {
+ true
+ }
}
impl ConfigType for bool {
}
}
+impl ConfigType for MacroSelectors {
+ fn doc_hint() -> String {
+ String::from("[<string>, ...]")
+ }
+}
+
impl ConfigType for WidthHeuristics {
fn doc_hint() -> String {
String::new()
}
macro_rules! create_config {
+ // Options passed in to the macro.
+ //
+ // - $i: the ident name of the option
+ // - $ty: the type of the option value
+ // - $def: the default value of the option
+ // - $stb: true if the option is stable
+ // - $dstring: description of the option
($($i:ident: $ty:ty, $def:expr, $stb:expr, $( $dstring:expr ),+ );+ $(;)*) => (
#[cfg(test)]
use std::collections::HashSet;
#[derive(Clone)]
#[allow(unreachable_pub)]
pub struct Config {
- // For each config item, we store a bool indicating whether it has
- // been accessed and the value, and a bool whether the option was
- // manually initialised, or taken from the default,
+ // For each config item, we store:
+ //
+ // - 0: true if the value has been access
+ // - 1: true if the option was manually initialized
+ // - 2: the option value
+ // - 3: true if the option is unstable
$($i: (Cell<bool>, bool, $ty, bool)),+
}
| "array_width"
| "chain_width" => self.0.set_heuristics(),
"merge_imports" => self.0.set_merge_imports(),
+ "fn_args_layout" => self.0.set_fn_args_layout(),
&_ => (),
}
}
fn fill_from_parsed_config(mut self, parsed: PartialConfig, dir: &Path) -> Config {
$(
- if let Some(val) = parsed.$i {
- if self.$i.3 {
+ if let Some(option_value) = parsed.$i {
+ let option_stable = self.$i.3;
+ if $crate::config::config_type::is_stable_option_and_value(
+ stringify!($i), option_stable, &option_value
+ ) {
self.$i.1 = true;
- self.$i.2 = val;
- } else {
- if crate::is_nightly_channel!() {
- self.$i.1 = true;
- self.$i.2 = val;
- } else {
- eprintln!("Warning: can't set `{} = {:?}`, unstable features are only \
- available in nightly channel.", stringify!($i), val);
- }
+ self.$i.2 = option_value;
}
}
)+
self.set_heuristics();
self.set_ignore(dir);
self.set_merge_imports();
+ self.set_fn_args_layout();
self
}
match key {
$(
stringify!($i) => {
- self.$i.1 = true;
- self.$i.2 = val.parse::<$ty>()
+ let option_value = val.parse::<$ty>()
.expect(&format!("Failed to parse override for {} (\"{}\") as a {}",
stringify!($i),
val,
stringify!($ty)));
+
+ // Users are currently allowed to set unstable
+ // options/variants via the `--config` options override.
+ //
+ // There is ongoing discussion about how to move forward here:
+ // https://github.com/rust-lang/rustfmt/pull/5379
+ //
+ // For now, do not validate whether the option or value is stable,
+ // just always set it.
+ self.$i.1 = true;
+ self.$i.2 = option_value;
}
)+
_ => panic!("Unknown config key in override: {}", key)
| "array_width"
| "chain_width" => self.set_heuristics(),
"merge_imports" => self.set_merge_imports(),
+ "fn_args_layout" => self.set_fn_args_layout(),
&_ => (),
}
}
#[allow(unreachable_pub)]
pub fn is_hidden_option(name: &str) -> bool {
- const HIDE_OPTIONS: [&str; 5] =
- ["verbose", "verbose_diff", "file_lines", "width_heuristics", "merge_imports"];
+ const HIDE_OPTIONS: [&str; 6] = [
+ "verbose",
+ "verbose_diff",
+ "file_lines",
+ "width_heuristics",
+ "merge_imports",
+ "fn_args_layout"
+ ];
HIDE_OPTIONS.contains(&name)
}
}
}
+ fn set_fn_args_layout(&mut self) {
+ if self.was_set().fn_args_layout() {
+ eprintln!(
+ "Warning: the `fn_args_layout` option is deprecated. \
+ Use `fn_params_layout`. instead"
+ );
+ if !self.was_set().fn_params_layout() {
+ self.fn_params_layout.2 = self.fn_args_layout();
+ }
+ }
+ }
+
#[allow(unreachable_pub)]
/// Returns `true` if the config key was explicitly set and is the default value.
pub fn is_default(&self, key: &str) -> bool {
}
)
}
+
+pub(crate) fn is_stable_option_and_value<T>(
+ option_name: &str,
+ option_stable: bool,
+ option_value: &T,
+) -> bool
+where
+ T: PartialEq + std::fmt::Debug + ConfigType,
+{
+ let nightly = crate::is_nightly_channel!();
+ let variant_stable = option_value.stable_variant();
+ match (nightly, option_stable, variant_stable) {
+ // Stable with an unstable option
+ (false, false, _) => {
+ eprintln!(
+ "Warning: can't set `{} = {:?}`, unstable features are only \
+ available in nightly channel.",
+ option_name, option_value
+ );
+ false
+ }
+ // Stable with a stable option, but an unstable variant
+ (false, true, false) => {
+ eprintln!(
+ "Warning: can't set `{} = {:?}`, unstable variants are only \
+ available in nightly channel.",
+ option_name, option_value
+ );
+ false
+ }
+ // Nightly: everything allowed
+ // Stable with stable option and variant: allowed
+ (true, _, _) | (false, true, true) => true,
+ }
+}
--- /dev/null
+//! This module contains types and functions to support formatting specific macros.
+
+use itertools::Itertools;
+use std::{fmt, str};
+
+use serde::{Deserialize, Serialize};
+use serde_json as json;
+use thiserror::Error;
+
+/// Defines the name of a macro.
+#[derive(Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd, Deserialize, Serialize)]
+pub struct MacroName(String);
+
+impl MacroName {
+ pub fn new(other: String) -> Self {
+ Self(other)
+ }
+}
+
+impl fmt::Display for MacroName {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ self.0.fmt(f)
+ }
+}
+
+impl From<MacroName> for String {
+ fn from(other: MacroName) -> Self {
+ other.0
+ }
+}
+
+/// Defines a selector to match against a macro.
+#[derive(Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd, Deserialize, Serialize)]
+pub enum MacroSelector {
+ Name(MacroName),
+ All,
+}
+
+impl fmt::Display for MacroSelector {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ match self {
+ Self::Name(name) => name.fmt(f),
+ Self::All => write!(f, "*"),
+ }
+ }
+}
+
+impl str::FromStr for MacroSelector {
+ type Err = std::convert::Infallible;
+
+ fn from_str(s: &str) -> Result<Self, Self::Err> {
+ Ok(match s {
+ "*" => MacroSelector::All,
+ name => MacroSelector::Name(MacroName(name.to_owned())),
+ })
+ }
+}
+
+/// A set of macro selectors.
+#[derive(Clone, Debug, Default, PartialEq, Deserialize, Serialize)]
+pub struct MacroSelectors(pub Vec<MacroSelector>);
+
+impl fmt::Display for MacroSelectors {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ write!(f, "{}", self.0.iter().format(", "))
+ }
+}
+
+#[derive(Error, Debug)]
+pub enum MacroSelectorsError {
+ #[error("{0}")]
+ Json(json::Error),
+}
+
+// This impl is needed for `Config::override_value` to work for use in tests.
+impl str::FromStr for MacroSelectors {
+ type Err = MacroSelectorsError;
+
+ fn from_str(s: &str) -> Result<Self, Self::Err> {
+ let raw: Vec<&str> = json::from_str(s).map_err(MacroSelectorsError::Json)?;
+ Ok(Self(
+ raw.into_iter()
+ .map(|raw| {
+ MacroSelector::from_str(raw).expect("MacroSelector from_str is infallible")
+ })
+ .collect(),
+ ))
+ }
+}
+
+#[cfg(test)]
+mod test {
+ use super::*;
+ use std::str::FromStr;
+
+ #[test]
+ fn macro_names_from_str() {
+ let macro_names = MacroSelectors::from_str(r#"["foo", "*", "bar"]"#).unwrap();
+ assert_eq!(
+ macro_names,
+ MacroSelectors(
+ [
+ MacroSelector::Name(MacroName("foo".to_owned())),
+ MacroSelector::All,
+ MacroSelector::Name(MacroName("bar".to_owned()))
+ ]
+ .into_iter()
+ .collect()
+ )
+ );
+ }
+
+ #[test]
+ fn macro_names_display() {
+ let macro_names = MacroSelectors::from_str(r#"["foo", "*", "bar"]"#).unwrap();
+ assert_eq!(format!("{}", macro_names), "foo, *, bar");
+ }
+}
#[allow(unreachable_pub)]
pub use crate::config::lists::*;
#[allow(unreachable_pub)]
+pub use crate::config::macro_names::{MacroSelector, MacroSelectors};
+#[allow(unreachable_pub)]
pub use crate::config::options::*;
#[macro_use]
pub(crate) mod config_type;
#[macro_use]
+#[allow(unreachable_pub)]
pub(crate) mod options;
pub(crate) mod file_lines;
+#[allow(unreachable_pub)]
pub(crate) mod lists;
+pub(crate) mod macro_names;
// This macro defines configuration options used in rustfmt. Each option
// is defined as follows:
format_macro_matchers: bool, false, false,
"Format the metavariable matching patterns in macros";
format_macro_bodies: bool, true, false, "Format the bodies of macros";
+ skip_macro_invocations: MacroSelectors, MacroSelectors::default(), false,
+ "Skip formatting the bodies of macros invoked with the following names.";
hex_literal_case: HexLiteralCase, HexLiteralCase::Preserve, false,
"Format hexadecimal integer literals";
force_multiline_blocks: bool, false, false,
"Force multiline closure bodies and match arms to be wrapped in a block";
fn_args_layout: Density, Density::Tall, true,
- "Control the layout of arguments in a function";
+ "(deprecated: use fn_params_layout instead)";
+ fn_params_layout: Density, Density::Tall, true,
+ "Control the layout of parameters in function signatures.";
brace_style: BraceStyle, BraceStyle::SameLineWhere, false, "Brace style for items";
control_brace_style: ControlBraceStyle, ControlBraceStyle::AlwaysSameLine, false,
"Brace style for control flow constructs";
make_backup: bool, false, false, "Backup changed files";
print_misformatted_file_names: bool, false, true,
"Prints the names of mismatched files that were formatted. Prints the names of \
- files that would be formated when used with `--check` mode. ";
+ files that would be formatted when used with `--check` mode. ";
}
#[derive(Error, Debug)]
cloned.width_heuristics = None;
cloned.print_misformatted_file_names = None;
cloned.merge_imports = None;
+ cloned.fn_args_layout = None;
::toml::to_string(&cloned).map_err(ToTomlError)
}
use super::*;
use std::str;
+ use crate::config::macro_names::MacroName;
use rustfmt_config_proc_macro::{nightly_only_test, stable_only_test};
#[allow(dead_code)]
mod mock {
use super::super::*;
+ use rustfmt_config_proc_macro::config_type;
+
+ #[config_type]
+ pub(crate) enum PartiallyUnstableOption {
+ V1,
+ V2,
+ #[unstable_variant]
+ V3,
+ }
create_config! {
// Options that are used by the generated functions
"Merge imports";
merge_imports: bool, false, false, "(deprecated: use imports_granularity instead)";
+ // fn_args_layout renamed to fn_params_layout
+ fn_args_layout: Density, Density::Tall, true,
+ "(deprecated: use fn_params_layout instead)";
+ fn_params_layout: Density, Density::Tall, true,
+ "Control the layout of parameters in a function signatures.";
+
// Width Heuristics
use_small_heuristics: Heuristics, Heuristics::Default, true,
"Whether to use different formatting for items and \
// Options that are used by the tests
stable_option: bool, false, true, "A stable option";
unstable_option: bool, false, false, "An unstable option";
+ partially_unstable_option: PartiallyUnstableOption, PartiallyUnstableOption::V1, true,
+ "A partially unstable option";
+ }
+
+ #[cfg(test)]
+ mod partially_unstable_option {
+ use super::{Config, PartialConfig, PartiallyUnstableOption};
+ use rustfmt_config_proc_macro::{nightly_only_test, stable_only_test};
+ use std::path::Path;
+
+ /// From the config file, we can fill with a stable variant
+ #[test]
+ fn test_from_toml_stable_value() {
+ let toml = r#"
+ partially_unstable_option = "V2"
+ "#;
+ let partial_config: PartialConfig = toml::from_str(toml).unwrap();
+ let config = Config::default();
+ let config = config.fill_from_parsed_config(partial_config, Path::new(""));
+ assert_eq!(
+ config.partially_unstable_option(),
+ PartiallyUnstableOption::V2
+ );
+ }
+
+ /// From the config file, we cannot fill with an unstable variant (stable only)
+ #[stable_only_test]
+ #[test]
+ fn test_from_toml_unstable_value_on_stable() {
+ let toml = r#"
+ partially_unstable_option = "V3"
+ "#;
+ let partial_config: PartialConfig = toml::from_str(toml).unwrap();
+ let config = Config::default();
+ let config = config.fill_from_parsed_config(partial_config, Path::new(""));
+ assert_eq!(
+ config.partially_unstable_option(),
+ // default value from config, i.e. fill failed
+ PartiallyUnstableOption::V1
+ );
+ }
+
+ /// From the config file, we can fill with an unstable variant (nightly only)
+ #[nightly_only_test]
+ #[test]
+ fn test_from_toml_unstable_value_on_nightly() {
+ let toml = r#"
+ partially_unstable_option = "V3"
+ "#;
+ let partial_config: PartialConfig = toml::from_str(toml).unwrap();
+ let config = Config::default();
+ let config = config.fill_from_parsed_config(partial_config, Path::new(""));
+ assert_eq!(
+ config.partially_unstable_option(),
+ PartiallyUnstableOption::V3
+ );
+ }
}
}
assert_eq!(config.was_set().verbose(), false);
}
+ const PRINT_DOCS_STABLE_OPTION: &str = "stable_option <boolean> Default: false";
+ const PRINT_DOCS_UNSTABLE_OPTION: &str = "unstable_option <boolean> Default: false (unstable)";
+ const PRINT_DOCS_PARTIALLY_UNSTABLE_OPTION: &str =
+ "partially_unstable_option [V1|V2|V3 (unstable)] Default: V1";
+
#[test]
fn test_print_docs_exclude_unstable() {
use self::mock::Config;
Config::print_docs(&mut output, false);
let s = str::from_utf8(&output).unwrap();
-
- assert_eq!(s.contains("stable_option"), true);
- assert_eq!(s.contains("unstable_option"), false);
- assert_eq!(s.contains("(unstable)"), false);
+ assert_eq!(s.contains(PRINT_DOCS_STABLE_OPTION), true);
+ assert_eq!(s.contains(PRINT_DOCS_UNSTABLE_OPTION), false);
+ assert_eq!(s.contains(PRINT_DOCS_PARTIALLY_UNSTABLE_OPTION), true);
}
#[test]
Config::print_docs(&mut output, true);
let s = str::from_utf8(&output).unwrap();
- assert_eq!(s.contains("stable_option"), true);
- assert_eq!(s.contains("unstable_option"), true);
- assert_eq!(s.contains("(unstable)"), true);
+ assert_eq!(s.contains(PRINT_DOCS_STABLE_OPTION), true);
+ assert_eq!(s.contains(PRINT_DOCS_UNSTABLE_OPTION), true);
+ assert_eq!(s.contains(PRINT_DOCS_PARTIALLY_UNSTABLE_OPTION), true);
}
#[test]
format_strings = false
format_macro_matchers = false
format_macro_bodies = true
+skip_macro_invocations = []
hex_literal_case = "Preserve"
empty_item_single_line = true
struct_lit_single_line = true
match_arm_blocks = true
match_arm_leading_pipes = "Never"
force_multiline_blocks = false
-fn_args_layout = "Tall"
+fn_params_layout = "Tall"
brace_style = "SameLineWhere"
control_brace_style = "AlwaysSameLine"
trailing_semicolon = true
assert_eq!(config.single_line_if_else_max_width(), 100);
}
}
+
+ #[cfg(test)]
+ mod partially_unstable_option {
+ use super::mock::{Config, PartiallyUnstableOption};
+ use super::*;
+
+ /// From the command line, we can override with a stable variant.
+ #[test]
+ fn test_override_stable_value() {
+ let mut config = Config::default();
+ config.override_value("partially_unstable_option", "V2");
+ assert_eq!(
+ config.partially_unstable_option(),
+ PartiallyUnstableOption::V2
+ );
+ }
+
+ /// From the command line, we can override with an unstable variant.
+ #[test]
+ fn test_override_unstable_value() {
+ let mut config = Config::default();
+ config.override_value("partially_unstable_option", "V3");
+ assert_eq!(
+ config.partially_unstable_option(),
+ PartiallyUnstableOption::V3
+ );
+ }
+ }
+
+ #[test]
+ fn test_override_skip_macro_invocations() {
+ let mut config = Config::default();
+ config.override_value("skip_macro_invocations", r#"["*", "println"]"#);
+ assert_eq!(
+ config.skip_macro_invocations(),
+ MacroSelectors(vec![
+ MacroSelector::All,
+ MacroSelector::Name(MacroName::new("println".to_owned()))
+ ])
+ );
+ }
}
use crate::string::{rewrite_string, StringFormat};
use crate::types::{rewrite_path, PathContext};
use crate::utils::{
- colon_spaces, contains_skip, count_newlines, first_line_ends_with, inner_attributes,
- last_line_extendable, last_line_width, mk_sp, outer_attributes, semicolon_for_expr,
- unicode_str_width, wrap_str,
+ colon_spaces, contains_skip, count_newlines, filtered_str_fits, first_line_ends_with,
+ inner_attributes, last_line_extendable, last_line_width, mk_sp, outer_attributes,
+ semicolon_for_expr, unicode_str_width, wrap_str,
};
use crate::vertical::rewrite_with_alignment;
use crate::visitor::FmtVisitor;
}
}
ast::ExprKind::Underscore => Some("_".to_owned()),
- ast::ExprKind::IncludedBytes(..) => unreachable!(),
+ ast::ExprKind::FormatArgs(..) | ast::ExprKind::IncludedBytes(..) => {
+ // These do not occur in the AST because macros aren't expanded.
+ unreachable!()
+ }
ast::ExprKind::Err => None,
};
match (orig_rhs, new_rhs) {
(Some(ref orig_rhs), Some(ref new_rhs))
- if wrap_str(new_rhs.clone(), context.config.max_width(), new_shape)
- .is_none() =>
+ if !filtered_str_fits(&new_rhs, context.config.max_width(), new_shape) =>
{
Some(format!("{}{}", before_space_str, orig_rhs))
}
use_trees: Vec<UseTree>,
import_granularity: ImportGranularity,
) -> Vec<UseTree> {
- // Return non-sorted single occurance of the use-trees text string;
- // order is by first occurance of the use-tree.
+ // Return non-sorted single occurrence of the use-trees text string;
+ // order is by first occurrence of the use-tree.
use_trees
.into_iter()
.flat_map(|tree| tree.flatten(import_granularity))
let item_snippet = context.snippet(item.span);
if let Some(lo) = item_snippet.find('/') {
// 1 = `{`
- let comment_hi = body_lo - BytePos(1);
+ let comment_hi = if generics.params.len() > 0 {
+ generics.span.lo() - BytePos(1)
+ } else {
+ body_lo - BytePos(1)
+ };
let comment_lo = item.span.lo() + BytePos(lo as u32);
if comment_lo < comment_hi {
match recover_missing_comment_in_span(
) -> Option<String> {
let header_str = format_header(context, p.prefix, p.ident, p.vis, offset);
let generics_str = if let Some(generics) = p.generics {
- let hi = context.snippet_provider.span_before(p.span, ";");
+ let hi = context.snippet_provider.span_before_last(p.span, ";");
format_generics(
context,
generics,
¶m_items,
context
.config
- .fn_args_layout()
+ .fn_params_layout()
.to_list_tactic(param_items.len()),
Separator::Comma,
one_line_budget,
} else {
inner_item.as_ref()
};
- let mut item_last_line_width = item_last_line.len() + item_sep_len;
+ let mut item_last_line_width = unicode_str_width(item_last_line) + item_sep_len;
if item_last_line.starts_with(&**indent_str) {
- item_last_line_width -= indent_str.len();
+ item_last_line_width -= unicode_str_width(indent_str);
}
if !item.is_substantial() {
} else if starts_with_newline(comment) {
false
} else {
- comment.trim().contains('\n') || comment.trim().len() > width
+ comment.trim().contains('\n') || unicode_str_width(comment.trim()) > width
};
rewrite_comment(
if !starts_with_newline(comment) {
if formatting.align_comments {
let mut comment_alignment =
- post_comment_alignment(item_max_width, inner_item.len());
+ post_comment_alignment(item_max_width, unicode_str_width(inner_item));
if first_line_width(&formatted_comment)
+ last_line_width(&result)
+ comment_alignment
item_max_width = None;
formatted_comment = rewrite_post_comment(&mut item_max_width)?;
comment_alignment =
- post_comment_alignment(item_max_width, inner_item.len());
+ post_comment_alignment(item_max_width, unicode_str_width(inner_item));
}
for _ in 0..=comment_alignment {
result.push(' ');
let mut first = true;
for item in items.clone().into_iter().skip(i) {
let item = item.as_ref();
- let inner_item_width = item.inner_as_ref().len();
+ let inner_item_width = unicode_str_width(item.inner_as_ref());
if !first
&& (item.is_different_group()
|| item.post_comment.is_none()
max_width
}
-fn post_comment_alignment(item_max_width: Option<usize>, inner_item_len: usize) -> usize {
- item_max_width.unwrap_or(0).saturating_sub(inner_item_len)
+fn post_comment_alignment(item_max_width: Option<usize>, inner_item_width: usize) -> usize {
+ item_max_width.unwrap_or(0).saturating_sub(inner_item_width)
}
pub(crate) struct ListItems<'a, I, F1, F2, F3>
use crate::source_map::SpanUtils;
use crate::spanned::Spanned;
use crate::utils::{
- format_visibility, indent_next_line, is_empty_line, mk_sp, remove_trailing_white_spaces,
- rewrite_ident, trim_left_preserve_layout, wrap_str, NodeIdExt,
+ filtered_str_fits, format_visibility, indent_next_line, is_empty_line, mk_sp,
+ remove_trailing_white_spaces, rewrite_ident, trim_left_preserve_layout, NodeIdExt,
};
use crate::visitor::FmtVisitor;
) -> Option<String> {
let should_skip = context
.skip_context
- .skip_macro(context.snippet(mac.path.span));
+ .macros
+ .skip(context.snippet(mac.path.span));
if should_skip {
None
} else {
}
}
};
- let new_body = wrap_str(
- new_body_snippet.snippet.to_string(),
- config.max_width(),
- shape,
- )?;
+
+ if !filtered_str_fits(&new_body_snippet.snippet, config.max_width(), shape) {
+ return None;
+ }
// Indent the body since it is in a block.
let indent_str = body_indent.to_string(&config);
- let mut new_body = LineClasses::new(new_body.trim_end())
+ let mut new_body = LineClasses::new(new_body_snippet.snippet.trim_end())
.enumerate()
.fold(
(String::new(), true),
use rustc_ast::ast;
use rustc_ast_pretty::pprust;
+use std::collections::HashSet;
-/// Take care of skip name stack. You can update it by attributes slice or
-/// by other context. Query this context to know if you need skip a block.
+/// Track which blocks of code are to be skipped when formatting.
+///
+/// You can update it by:
+///
+/// - attributes slice
+/// - manually feeding values into the underlying contexts
+///
+/// Query this context to know if you need to skip a block.
#[derive(Default, Clone)]
pub(crate) struct SkipContext {
- macros: Vec<String>,
- attributes: Vec<String>,
+ pub(crate) macros: SkipNameContext,
+ pub(crate) attributes: SkipNameContext,
}
impl SkipContext {
pub(crate) fn update_with_attrs(&mut self, attrs: &[ast::Attribute]) {
- self.macros.append(&mut get_skip_names("macros", attrs));
- self.attributes
- .append(&mut get_skip_names("attributes", attrs));
+ self.macros.extend(get_skip_names("macros", attrs));
+ self.attributes.extend(get_skip_names("attributes", attrs));
}
- pub(crate) fn update(&mut self, mut other: SkipContext) {
- self.macros.append(&mut other.macros);
- self.attributes.append(&mut other.attributes);
+ pub(crate) fn update(&mut self, other: SkipContext) {
+ let SkipContext { macros, attributes } = other;
+ self.macros.update(macros);
+ self.attributes.update(attributes);
+ }
+}
+
+/// Track which names to skip.
+///
+/// Query this context with a string to know whether to skip it.
+#[derive(Clone)]
+pub(crate) enum SkipNameContext {
+ All,
+ Values(HashSet<String>),
+}
+
+impl Default for SkipNameContext {
+ fn default() -> Self {
+ Self::Values(Default::default())
+ }
+}
+
+impl Extend<String> for SkipNameContext {
+ fn extend<T: IntoIterator<Item = String>>(&mut self, iter: T) {
+ match self {
+ Self::All => {}
+ Self::Values(values) => values.extend(iter),
+ }
+ }
+}
+
+impl SkipNameContext {
+ pub(crate) fn update(&mut self, other: Self) {
+ match (self, other) {
+ // If we're already skipping everything, nothing more can be added
+ (Self::All, _) => {}
+ // If we want to skip all, set it
+ (this, Self::All) => {
+ *this = Self::All;
+ }
+ // If we have some new values to skip, add them
+ (Self::Values(existing_values), Self::Values(new_values)) => {
+ existing_values.extend(new_values)
+ }
+ }
}
- pub(crate) fn skip_macro(&self, name: &str) -> bool {
- self.macros.iter().any(|n| n == name)
+ pub(crate) fn skip(&self, name: &str) -> bool {
+ match self {
+ Self::All => true,
+ Self::Values(values) => values.contains(name),
+ }
}
- pub(crate) fn skip_attribute(&self, name: &str) -> bool {
- self.attributes.iter().any(|n| n == name)
+ pub(crate) fn skip_all(&mut self) {
+ *self = Self::All;
}
}
lazy_static! {
static ref CONFIG_NAME_REGEX: regex::Regex =
regex::Regex::new(r"^## `([^`]+)`").expect("failed creating configuration pattern");
+ // Configuration values, which will be passed to `from_str`:
+ //
+ // - must be prefixed with `####`
+ // - must be wrapped in backticks
+ // - may by wrapped in double quotes (which will be stripped)
static ref CONFIG_VALUE_REGEX: regex::Regex =
- regex::Regex::new(r#"^#### `"?([^`"]+)"?`"#)
+ regex::Regex::new(r#"^#### `"?([^`]+?)"?`"#)
.expect("failed creating configuration value pattern");
}
assert!(
me.is_file() || me.with_extension("exe").is_file(),
"{}",
- if cfg!(release) {
- "no rustfmt bin, try running `cargo build --release` before testing"
- } else {
- "no rustfmt bin, try running `cargo build` before testing"
- }
+ "no rustfmt bin, try running `cargo build` or `cargo build --release` before testing"
);
me
}
ast::GenericBound::Trait(..) => last_line_extendable(s),
};
+ // Whether a GenericBound item is a PathSegment segment that includes internal array
+ // that contains more than one item
+ let is_item_with_multi_items_array = |item: &ast::GenericBound| match item {
+ ast::GenericBound::Trait(ref poly_trait_ref, ..) => {
+ let segments = &poly_trait_ref.trait_ref.path.segments;
+ if segments.len() > 1 {
+ true
+ } else {
+ if let Some(args_in) = &segments[0].args {
+ matches!(
+ args_in.deref(),
+ ast::GenericArgs::AngleBracketed(bracket_args)
+ if bracket_args.args.len() > 1
+ )
+ } else {
+ false
+ }
+ }
+ }
+ _ => false,
+ };
+
let result = items.iter().enumerate().try_fold(
(String::new(), None, false),
|(strs, prev_trailing_span, prev_extendable), (i, item)| {
},
)?;
- if !force_newline
- && items.len() > 1
- && (result.0.contains('\n') || result.0.len() > shape.width)
- {
+ // Whether to retry with a forced newline:
+ // Only if result is not already multiline and did not exceed line width,
+ // and either there is more than one item;
+ // or the single item is of type `Trait`,
+ // and any of the internal arrays contains more than one item;
+ let retry_with_force_newline = match context.config.version() {
+ Version::One => {
+ !force_newline
+ && items.len() > 1
+ && (result.0.contains('\n') || result.0.len() > shape.width)
+ }
+ Version::Two if force_newline => false,
+ Version::Two if (!result.0.contains('\n') && result.0.len() <= shape.width) => false,
+ Version::Two if items.len() > 1 => true,
+ Version::Two => is_item_with_multi_items_array(&items[0]),
+ };
+
+ if retry_with_force_newline {
join_bounds_inner(context, shape, items, need_indent, true)
} else {
Some(result.0)
// Wraps String in an Option. Returns Some when the string adheres to the
// Rewrite constraints defined for the Rewrite trait and None otherwise.
pub(crate) fn wrap_str(s: String, max_width: usize, shape: Shape) -> Option<String> {
- if is_valid_str(&filter_normal_code(&s), max_width, shape) {
+ if filtered_str_fits(&s, max_width, shape) {
Some(s)
} else {
None
}
}
-fn is_valid_str(snippet: &str, max_width: usize, shape: Shape) -> bool {
+pub(crate) fn filtered_str_fits(snippet: &str, max_width: usize, shape: Shape) -> bool {
+ let snippet = &filter_normal_code(snippet);
if !snippet.is_empty() {
// First line must fits with `shape.width`.
if first_line_width(snippet) > shape.width {
pub(crate) fn is_block_expr(context: &RewriteContext<'_>, expr: &ast::Expr, repr: &str) -> bool {
match expr.kind {
ast::ExprKind::MacCall(..)
+ | ast::ExprKind::FormatArgs(..)
| ast::ExprKind::Call(..)
| ast::ExprKind::MethodCall(..)
| ast::ExprKind::Array(..)
use crate::attr::*;
use crate::comment::{contains_comment, rewrite_comment, CodeCharKind, CommentCodeSlices};
use crate::config::Version;
-use crate::config::{BraceStyle, Config};
+use crate::config::{BraceStyle, Config, MacroSelector};
use crate::coverage::transform_missing_snippet;
use crate::items::{
format_impl, format_trait, format_trait_alias, is_mod_decl, is_use_item, rewrite_extern_crate,
snippet_provider: &'a SnippetProvider,
report: FormatReport,
) -> FmtVisitor<'a> {
+ let mut skip_context = SkipContext::default();
+ let mut macro_names = Vec::new();
+ for macro_selector in config.skip_macro_invocations().0 {
+ match macro_selector {
+ MacroSelector::Name(name) => macro_names.push(name.to_string()),
+ MacroSelector::All => skip_context.macros.skip_all(),
+ }
+ }
+ skip_context.macros.extend(macro_names);
FmtVisitor {
parent_context: None,
parse_sess: parse_session,
is_macro_def: false,
macro_rewrite_failure: false,
report,
- skip_context: Default::default(),
+ skip_context,
}
}
use std::path::Path;
use std::process::Command;
+use rustfmt_config_proc_macro::rustfmt_only_ci_test;
+
/// Run the cargo-fmt executable and return its output.
fn cargo_fmt(args: &[&str]) -> (String, String) {
let mut bin_dir = env::current_exe().unwrap();
};
}
-#[ignore]
+#[rustfmt_only_ci_test]
#[test]
fn version() {
assert_that!(&["--version"], starts_with("rustfmt "));
assert_that!(&["--", "--version"], starts_with("rustfmt "));
}
-#[ignore]
+#[rustfmt_only_ci_test]
#[test]
fn print_config() {
assert_that!(
);
}
-#[ignore]
+#[rustfmt_only_ci_test]
#[test]
fn rustfmt_help() {
assert_that!(&["--", "--help"], contains("Format Rust code"));
assert_that!(&["--", "--help=config"], contains("Configuration Options:"));
}
-#[ignore]
+#[rustfmt_only_ci_test]
#[test]
fn cargo_fmt_out_of_line_test_modules() {
// See also https://github.com/rust-lang/rustfmt/issues/5119
assert!(stdout.contains(&format!("Diff in {}", path.display())))
}
}
+
+#[rustfmt_only_ci_test]
+#[test]
+fn cargo_fmt_emits_error_on_line_overflow_true() {
+ // See also https://github.com/rust-lang/rustfmt/issues/3164
+ let args = [
+ "--check",
+ "--manifest-path",
+ "tests/cargo-fmt/source/issue_3164/Cargo.toml",
+ "--",
+ "--config",
+ "error_on_line_overflow=true",
+ ];
+
+ let (_stdout, stderr) = cargo_fmt(&args);
+ assert!(stderr.contains(
+ "line formatted, but exceeded maximum width (maximum: 100 (see `max_width` option)"
+ ))
+}
--- /dev/null
+[package]
+name = "issue_3164"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
--- /dev/null
+#[allow(unused_macros)]
+macro_rules! foo {
+ ($id:ident) => {
+ macro_rules! bar {
+ ($id2:tt) => {
+ #[cfg(any(target_feature = $id2, target_feature = $id2, target_feature = $id2, target_feature = $id2, target_feature = $id2))]
+ fn $id() {}
+ };
+ }
+ };
+}
+
+fn main() {}
tab_spaces = 2
newline_style = "Unix"
brace_style = "SameLineWhere"
-fn_args_layout = "Tall"
+fn_params_layout = "Tall"
trailing_comma = "Vertical"
indent_style = "Block"
reorder_imports = false
* mod g;
Module resolution will fail if we look for './lib/c/d/e.rs' or './lib/c/d/e/mod.rs',
-so we should fall back to looking for './lib/c/e.rs', which correctly finds the modlue, that
+so we should fall back to looking for './lib/c/e.rs', which correctly finds the module, that
rustfmt should format.
'./lib/c/d/f.rs' and './lib/c/d/g/mod.rs' exist at the default submodule paths so we should be able
* mod c;
Module resolution will fail if we look for './lib/a.rs' or './lib/a/mod.rs',
-so we should fall back to looking for './a.rs', which correctly finds the modlue that
+so we should fall back to looking for './a.rs', which correctly finds the module that
rustfmt should format.
'./lib/b.rs' and './lib/c/mod.rs' exist at the default submodule paths so we should be able
use std::path::Path;
use std::process::Command;
+use rustfmt_config_proc_macro::rustfmt_only_ci_test;
+
/// Run the rustfmt executable and return its output.
fn rustfmt(args: &[&str]) -> (String, String) {
let mut bin_dir = env::current_exe().unwrap();
};
}
-#[ignore]
+#[rustfmt_only_ci_test]
#[test]
fn print_config() {
assert_that!(
remove_file("minimal-config").unwrap();
}
-#[ignore]
+#[rustfmt_only_ci_test]
#[test]
fn inline_config() {
// single invocation
// The path attribute points to a file that does not exist
assert!(stderr.contains("does_not_exist.rs does not exist"));
}
+
+#[test]
+fn rustfmt_emits_error_on_line_overflow_true() {
+ // See also https://github.com/rust-lang/rustfmt/issues/3164
+ let args = [
+ "--config",
+ "error_on_line_overflow=true",
+ "tests/cargo-fmt/source/issue_3164/src/main.rs",
+ ];
+
+ let (_stdout, stderr) = rustfmt(&args);
+ assert!(stderr.contains(
+ "line formatted, but exceeded maximum width (maximum: 100 (see `max_width` option)"
+ ))
+}
tbm,
/// POPCNT (Population Count)
popcnt,
- /// FXSR (Floating-point context fast save and restor)
+ /// FXSR (Floating-point context fast save and restore)
fxsr,
/// XSAVE (Save Processor Extended States)
xsave,
--- /dev/null
+impl Default for WhitespaceCharacters {
+ fn default() -> Self {
+ Self {
+ space: '·', // U+00B7
+ nbsp: '⍽', // U+237D
+ tab: '→', // U+2192
+ newline: '⏎', // U+23CE
+ }
+ }
+}
+
+const RAINBOWS: &[&str] = &[
+ "rаinЬοѡ", // hue: 0
+ "raіnЬοw", // hue: 2
+ "rаіɴЬow", // hue: 2
+ "raіɴЬoѡ", // hue: 8
+ "ʀainЬow", // hue: 8
+ "ʀaіɴboѡ", // hue: 8
+ "ʀаіnbοw", // hue: 11
+ "rainЬoѡ", // hue: 14
+ "raіɴbow", // hue: 14
+ "rаiɴЬow", // hue: 20
+ "raіnЬow", // hue: 26
+ "ʀaiɴbοw", // hue: 32
+ "raіɴboѡ", // hue: 35
+ "rаiɴbow", // hue: 35
+ "rаіnbοw", // hue: 38
+ "rаinЬow", // hue: 47
+ "ʀaіnboѡ", // hue: 47
+ "ʀaіnЬoѡ", // hue: 47
+ "ʀаіɴbοw", // hue: 53
+ "ʀaіnЬοѡ", // hue: 57
+ "raiɴЬoѡ", // hue: 68
+ "ʀainbοѡ", // hue: 68
+ "ʀаinboѡ", // hue: 68
+ "ʀаiɴbοw", // hue: 68
+ "ʀаіnbow", // hue: 68
+ "rаіnЬοѡ", // hue: 69
+ "ʀainЬοw", // hue: 71
+ "raiɴbow", // hue: 73
+ "raіnЬoѡ", // hue: 74
+ "rаіɴbοw", // hue: 77
+ "raіnЬοѡ", // hue: 81
+ "raiɴЬow", // hue: 83
+ "ʀainbοw", // hue: 83
+ "ʀаinbow", // hue: 83
+ "ʀаiɴbοѡ", // hue: 83
+ "ʀаіnboѡ", // hue: 83
+ "ʀаіɴЬοѡ", // hue: 84
+ "rainЬow", // hue: 85
+ "ʀаiɴЬοw", // hue: 86
+ "ʀаіnbοѡ", // hue: 89
+ "ʀаіnЬοw", // hue: 92
+ "rаiɴbοw", // hue: 95
+ "ʀаіɴbοѡ", // hue: 98
+ "ʀаiɴЬοѡ", // hue: 99
+ "raіnbοw", // hue: 101
+ "ʀаіɴЬοw", // hue: 101
+ "ʀaiɴboѡ", // hue: 104
+ "ʀаinbοѡ", // hue: 104
+ "rаiɴbοѡ", // hue: 107
+ "ʀаinЬοw", // hue: 107
+ "rаiɴЬοw", // hue: 110
+ "rаіnboѡ", // hue: 110
+ "rаіnbοѡ", // hue: 113
+ "ʀainЬοѡ", // hue: 114
+ "rаіnЬοw", // hue: 116
+ "ʀaіɴЬow", // hue: 116
+ "rаinbοw", // hue: 122
+ "ʀаіɴboѡ", // hue: 125
+ "rаinbοѡ", // hue: 131
+ "rainbow", // hue: 134
+ "rаinЬοw", // hue: 134
+ "ʀаiɴboѡ", // hue: 140
+ "rainЬοѡ", // hue: 141
+ "raіɴЬow", // hue: 143
+ "ʀainЬoѡ", // hue: 143
+ "ʀaіɴbow", // hue: 143
+ "ʀainbow", // hue: 148
+ "rаіɴboѡ", // hue: 149
+ "ʀainboѡ", // hue: 155
+ "ʀaіnbow", // hue: 155
+ "ʀaіnЬow", // hue: 155
+ "raiɴbοw", // hue: 158
+ "ʀаiɴЬoѡ", // hue: 158
+ "rainbοw", // hue: 160
+ "rаinbow", // hue: 160
+ "ʀaіɴbοѡ", // hue: 164
+ "ʀаiɴbow", // hue: 164
+ "ʀаіnЬoѡ", // hue: 164
+ "ʀaiɴЬοѡ", // hue: 165
+ "rаiɴboѡ", // hue: 167
+ "ʀaіɴЬοw", // hue: 167
+ "ʀaіɴЬοѡ", // hue: 171
+ "raіnboѡ", // hue: 173
+ "ʀаіɴЬoѡ", // hue: 173
+ "rаіɴbοѡ", // hue: 176
+ "ʀаinЬow", // hue: 176
+ "rаiɴЬοѡ", // hue: 177
+ "rаіɴЬοw", // hue: 179
+ "ʀаinЬoѡ", // hue: 179
+ "ʀаіɴbow", // hue: 179
+ "rаiɴЬoѡ", // hue: 182
+ "raіɴbοѡ", // hue: 188
+ "rаіnЬoѡ", // hue: 188
+ "raiɴЬοѡ", // hue: 189
+ "raіɴЬοw", // hue: 191
+ "ʀaіɴbοw", // hue: 191
+ "ʀаіnЬow", // hue: 191
+ "rainbοѡ", // hue: 194
+ "rаinboѡ", // hue: 194
+ "rаіnbow", // hue: 194
+ "rainЬοw", // hue: 197
+ "rаinЬoѡ", // hue: 206
+ "rаіɴbow", // hue: 206
+ "rаіɴЬοѡ", // hue: 210
+ "ʀaiɴЬow", // hue: 212
+ "raіɴbοw", // hue: 218
+ "rаіnЬow", // hue: 218
+ "ʀaiɴbοѡ", // hue: 221
+ "ʀaiɴЬοw", // hue: 224
+ "ʀaіnbοѡ", // hue: 227
+ "raiɴboѡ", // hue: 230
+ "ʀaіnbοw", // hue: 230
+ "ʀaіnЬοw", // hue: 230
+ "ʀаinЬοѡ", // hue: 231
+ "rainboѡ", // hue: 232
+ "raіnbow", // hue: 232
+ "ʀаіɴЬow", // hue: 233
+ "ʀaіɴЬoѡ", // hue: 239
+ "ʀаіnЬοѡ", // hue: 246
+ "raiɴbοѡ", // hue: 248
+ "ʀаiɴЬow", // hue: 248
+ "raіɴЬοѡ", // hue: 249
+ "raiɴЬοw", // hue: 251
+ "rаіɴЬoѡ", // hue: 251
+ "ʀaiɴbow", // hue: 251
+ "ʀаinbοw", // hue: 251
+ "raіnbοѡ", // hue: 254
+];
+++ /dev/null
-// rustfmt-fn_args_layout: Compressed
-// Function arguments density
-
-trait Lorem {
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
- // body
- }
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit) {
- // body
- }
-}
+++ /dev/null
-// rustfmt-fn_args_layout: Tall
-// Function arguments density
-
-trait Lorem {
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
- // body
- }
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit) {
- // body
- }
-}
+++ /dev/null
-// rustfmt-fn_args_layout: Vertical
-// Function arguments density
-
-trait Lorem {
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
- // body
- }
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit) {
- // body
- }
-}
--- /dev/null
+// rustfmt-fn_params_layout: Compressed
+// Function arguments density
+
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit) {
+ // body
+ }
+}
--- /dev/null
+// rustfmt-fn_params_layout: Tall
+// Function arguments density
+
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit) {
+ // body
+ }
+}
--- /dev/null
+// rustfmt-fn_params_layout: Vertical
+// Function arguments density
+
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur, adipiscing: Adipiscing, elit: Elit) {
+ // body
+ }
+}
Normal(u32, String, ),
StructLike { x: i32, // Test comment
// Pre-comment
- #[Attr50] y: SomeType, // Aanother Comment
+ #[Attr50] y: SomeType, // Another Comment
}, SL { a: A }
}
// rustfmt-normalize_comments: true
-// rustfmt-fn_args_layout: Vertical
+// rustfmt-fn_params_layout: Vertical
// rustfmt-brace_style: AlwaysNextLine
// Case with only one variable.
-// rustfmt-fn_args_layout: Compressed
+// rustfmt-fn_params_layout: Compressed
// Test some of the ways function signatures can be customised.
// Test compressed layout of args.
-// rustfmt-fn_args_layout: Vertical
+// rustfmt-fn_params_layout: Vertical
// Empty list should stay on one line.
fn do_bar(
--- /dev/null
+// rustfmt-format_macro_bodies: true
+
+// with comments
+macro_rules! macros {
+ () => {{
+ Struct {
+ field: (
+ 42 + //comment 1
+ 42
+ //comment 2
+ ),
+ };
+ }};
+}
+
+// without comments
+macro_rules! macros {
+ () => {{
+ Struct {
+ field: (
+ 42 +
+ 42
+ ),
+ };
+ }};
+}
--- /dev/null
+// output doesn't get corrupted when using comments within generic type parameters of a trait
+
+pub trait Something<
+ A,
+ // some comment
+ B,
+ C
+> {
+ fn a(&self, x: A) -> i32;
+ fn b(&self, x: B) -> i32;
+ fn c(&self, x: C) -> i32;
+}
+
+pub trait SomethingElse<
+ A,
+ /* some comment */
+ B,
+ C
+> {
+ fn a(&self, x: A) -> i32;
+ fn b(&self, x: B) -> i32;
+ fn c(&self, x: C) -> i32;
+}
--- /dev/null
+// rustfmt-version: One
+
+// Based on the issue description
+pub trait PrettyPrinter<'tcx>:
+Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+>
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+> + fmt::Write
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+> + fmt::Write1 + fmt::Write2
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+fmt::Write + Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+>
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+fmt::Write + Printer1<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+> + Printer2<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+>
+{
+//
+}
+
+// Some test cases to ensure other cases formatting were not changed
+fn f() -> Box<
+FnMut() -> Thing<
+WithType = LongItemName,
+Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+>,
+> {
+}
+fn f() -> Box<
+FnMut() -> Thing<
+WithType = LongItemName,
+Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+> + fmt::Write1
++ fmt::Write2,
+> {
+}
+
+fn foo<F>(foo2: F)
+where
+F: Fn(
+// this comment is deleted
+)
+{
+}
+fn foo<F>(foo2: F)
+where
+F: Fn(
+// this comment is deleted
+) + fmt::Write
+{
+}
+
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+F: for<> FnMut(
+&mut ProbeContext<>,
+ty::PolyTraitRefffffffffffffffffffffffffffffffff<>,
+tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+),
+{
+}
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+F: for<> FnMut(
+&mut ProbeContext<>,
+ty::PolyTraitRefffffffffffffffffffffffffffffffff<>,
+tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+) + fmt::Write,
+{
+}
+
+fn build_sorted_static_get_entry_names(
+mut entries: entryyyyyyyy,
+) -> (
+impl Fn(
+AlphabeticalTraversal,
+Seconddddddddddddddddddddddddddddddddddd
+) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
++ Sendddddddddddddddddddddddddddddddddddddddddddd
+) {
+}
+
+pub trait SomeTrait:
+Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
++ Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
+{
+}
+
+trait B = where
+for<'b> &'b Self: Send
++ Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
++ Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy;
--- /dev/null
+// rustfmt-version: Two
+
+// Based on the issue description
+pub trait PrettyPrinter<'tcx>:
+Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+>
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+> + fmt::Write
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+> + fmt::Write1 + fmt::Write2
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+fmt::Write + Printer<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+>
+{
+//
+}
+pub trait PrettyPrinter<'tcx>:
+fmt::Write + Printer1<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+> + Printer2<
+'tcx,
+Error = fmt::Error,
+Path = Self,
+Region = Self,
+Type = Self,
+DynExistential = Self,
+Const = Self,
+>
+{
+//
+}
+
+// Some test cases to ensure other cases formatting were not changed
+fn f() -> Box<
+FnMut() -> Thing<
+WithType = LongItemName,
+Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+>,
+> {
+}
+fn f() -> Box<
+FnMut() -> Thing<
+WithType = LongItemName,
+Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+> + fmt::Write1
++ fmt::Write2,
+> {
+}
+
+fn foo<F>(foo2: F)
+where
+F: Fn(
+// this comment is deleted
+)
+{
+}
+fn foo<F>(foo2: F)
+where
+F: Fn(
+// this comment is deleted
+) + fmt::Write
+{
+}
+
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+F: for<> FnMut(
+&mut ProbeContext<>,
+ty::PolyTraitRefffffffffffffffffffffffffffffffff<>,
+tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+),
+{
+}
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+F: for<> FnMut(
+&mut ProbeContext<>,
+ty::PolyTraitRefffffffffffffffffffffffffffffffff<>,
+tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+) + fmt::Write,
+{
+}
+
+fn build_sorted_static_get_entry_names(
+mut entries: entryyyyyyyy,
+) -> (
+impl Fn(
+AlphabeticalTraversal,
+Seconddddddddddddddddddddddddddddddddddd
+) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
++ Sendddddddddddddddddddddddddddddddddddddddddddd
+) {
+}
+
+pub trait SomeTrait:
+Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
++ Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
+{
+}
+
+trait B = where
+for<'b> &'b Self: Send
++ Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
++ Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy;
--- /dev/null
+// rustfmt-max_width: 160
+// rustfmt-fn_call_width: 96
+// rustfmt-fn_args_layout: Compressed
+// rustfmt-trailing_comma: Always
+// rustfmt-wrap_comments: true
+
+fn foo() {
+ for elem in try!(gen_epub_book::ops::parse_descriptor_file(&mut try!(File::open(&opts.source_file.1).map_err(|_| {
+ gen_epub_book::Error::Io {
+ desc: "input file",
+ op: "open",
+ more: None,
+ }
+ })),
+ "input file")) {
+ println!("{}", elem);
+ }
+}
+
+fn write_content() {
+ io::copy(try!(File::open(in_f).map_err(|_| {
+ Error::Io {
+ desc: "Content",
+ op: "open",
+ more: None,
+ }
+ })),
+ w);
+}
--- /dev/null
+fn main() {
+ let x = 1;
+ ;let y = 3;
+}
--- /dev/null
+fn main() {;7
+}
+
+fn main() {
+ ;7
+}
--- /dev/null
+// rustfmt-skip_macro_invocations: ["*"]
+
+// Should skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should skip this invocation
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["*","items"]
+
+// Should skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should also skip this invocation, as the wildcard covers it
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: []
+
+// Should not skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should not skip this invocation
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["items"]
+
+// Should skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should not skip this invocation
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["unknown"]
+
+// Should not skip this invocation
+items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["foo","bar"]
+
+// Should skip this invocation
+foo!(
+ const _: u8 = 0;
+);
+
+// Should skip this invocation
+bar!(
+ const _: u8 = 0;
+);
+
+// Should not skip this invocation
+baz!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["items"]
+
+// Should not skip this invocation
+self::items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["self::items"]
+
+// Should skip this invocation
+self::items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["self::items"]
+
+// Should not skip this invocation
+items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["aaa","ccc"]
+
+// These tests demonstrate a realistic use case with use aliases.
+// The use statements should not impact functionality in any way.
+
+use crate::{aaa, bbb, ddd};
+
+// No use alias, invocation in list
+// Should skip this invocation
+aaa!(
+ const _: u8 = 0;
+);
+
+// Use alias, invocation in list
+// Should skip this invocation
+use crate::bbb as ccc;
+ccc!(
+ const _: u8 = 0;
+);
+
+// Use alias, invocation not in list
+// Should not skip this invocation
+use crate::ddd as eee;
+eee!(
+ const _: u8 = 0;
+);
+
+// No use alias, invocation not in list
+// Should not skip this invocation
+fff!(
+ const _: u8 = 0;
+);
-// Test tuple litterals
+// Test tuple literals
fn foo() {
let a = (a, a, a, a, a);
///
fn foo() {}
-/// A long commment for wrapping
+/// A long comment for wrapping
/// This is a long long long long long long long long long long long long long long long long long long long long sentence.
fn bar() {}
tbm,
/// POPCNT (Population Count)
popcnt,
- /// FXSR (Floating-point context fast save and restor)
+ /// FXSR (Floating-point context fast save and restore)
fxsr,
/// XSAVE (Save Processor Extended States)
xsave,
--- /dev/null
+impl Default for WhitespaceCharacters {
+ fn default() -> Self {
+ Self {
+ space: '·', // U+00B7
+ nbsp: '⍽', // U+237D
+ tab: '→', // U+2192
+ newline: '⏎', // U+23CE
+ }
+ }
+}
+
+const RAINBOWS: &[&str] = &[
+ "rаinЬοѡ", // hue: 0
+ "raіnЬοw", // hue: 2
+ "rаіɴЬow", // hue: 2
+ "raіɴЬoѡ", // hue: 8
+ "ʀainЬow", // hue: 8
+ "ʀaіɴboѡ", // hue: 8
+ "ʀаіnbοw", // hue: 11
+ "rainЬoѡ", // hue: 14
+ "raіɴbow", // hue: 14
+ "rаiɴЬow", // hue: 20
+ "raіnЬow", // hue: 26
+ "ʀaiɴbοw", // hue: 32
+ "raіɴboѡ", // hue: 35
+ "rаiɴbow", // hue: 35
+ "rаіnbοw", // hue: 38
+ "rаinЬow", // hue: 47
+ "ʀaіnboѡ", // hue: 47
+ "ʀaіnЬoѡ", // hue: 47
+ "ʀаіɴbοw", // hue: 53
+ "ʀaіnЬοѡ", // hue: 57
+ "raiɴЬoѡ", // hue: 68
+ "ʀainbοѡ", // hue: 68
+ "ʀаinboѡ", // hue: 68
+ "ʀаiɴbοw", // hue: 68
+ "ʀаіnbow", // hue: 68
+ "rаіnЬοѡ", // hue: 69
+ "ʀainЬοw", // hue: 71
+ "raiɴbow", // hue: 73
+ "raіnЬoѡ", // hue: 74
+ "rаіɴbοw", // hue: 77
+ "raіnЬοѡ", // hue: 81
+ "raiɴЬow", // hue: 83
+ "ʀainbοw", // hue: 83
+ "ʀаinbow", // hue: 83
+ "ʀаiɴbοѡ", // hue: 83
+ "ʀаіnboѡ", // hue: 83
+ "ʀаіɴЬοѡ", // hue: 84
+ "rainЬow", // hue: 85
+ "ʀаiɴЬοw", // hue: 86
+ "ʀаіnbοѡ", // hue: 89
+ "ʀаіnЬοw", // hue: 92
+ "rаiɴbοw", // hue: 95
+ "ʀаіɴbοѡ", // hue: 98
+ "ʀаiɴЬοѡ", // hue: 99
+ "raіnbοw", // hue: 101
+ "ʀаіɴЬοw", // hue: 101
+ "ʀaiɴboѡ", // hue: 104
+ "ʀаinbοѡ", // hue: 104
+ "rаiɴbοѡ", // hue: 107
+ "ʀаinЬοw", // hue: 107
+ "rаiɴЬοw", // hue: 110
+ "rаіnboѡ", // hue: 110
+ "rаіnbοѡ", // hue: 113
+ "ʀainЬοѡ", // hue: 114
+ "rаіnЬοw", // hue: 116
+ "ʀaіɴЬow", // hue: 116
+ "rаinbοw", // hue: 122
+ "ʀаіɴboѡ", // hue: 125
+ "rаinbοѡ", // hue: 131
+ "rainbow", // hue: 134
+ "rаinЬοw", // hue: 134
+ "ʀаiɴboѡ", // hue: 140
+ "rainЬοѡ", // hue: 141
+ "raіɴЬow", // hue: 143
+ "ʀainЬoѡ", // hue: 143
+ "ʀaіɴbow", // hue: 143
+ "ʀainbow", // hue: 148
+ "rаіɴboѡ", // hue: 149
+ "ʀainboѡ", // hue: 155
+ "ʀaіnbow", // hue: 155
+ "ʀaіnЬow", // hue: 155
+ "raiɴbοw", // hue: 158
+ "ʀаiɴЬoѡ", // hue: 158
+ "rainbοw", // hue: 160
+ "rаinbow", // hue: 160
+ "ʀaіɴbοѡ", // hue: 164
+ "ʀаiɴbow", // hue: 164
+ "ʀаіnЬoѡ", // hue: 164
+ "ʀaiɴЬοѡ", // hue: 165
+ "rаiɴboѡ", // hue: 167
+ "ʀaіɴЬοw", // hue: 167
+ "ʀaіɴЬοѡ", // hue: 171
+ "raіnboѡ", // hue: 173
+ "ʀаіɴЬoѡ", // hue: 173
+ "rаіɴbοѡ", // hue: 176
+ "ʀаinЬow", // hue: 176
+ "rаiɴЬοѡ", // hue: 177
+ "rаіɴЬοw", // hue: 179
+ "ʀаinЬoѡ", // hue: 179
+ "ʀаіɴbow", // hue: 179
+ "rаiɴЬoѡ", // hue: 182
+ "raіɴbοѡ", // hue: 188
+ "rаіnЬoѡ", // hue: 188
+ "raiɴЬοѡ", // hue: 189
+ "raіɴЬοw", // hue: 191
+ "ʀaіɴbοw", // hue: 191
+ "ʀаіnЬow", // hue: 191
+ "rainbοѡ", // hue: 194
+ "rаinboѡ", // hue: 194
+ "rаіnbow", // hue: 194
+ "rainЬοw", // hue: 197
+ "rаinЬoѡ", // hue: 206
+ "rаіɴbow", // hue: 206
+ "rаіɴЬοѡ", // hue: 210
+ "ʀaiɴЬow", // hue: 212
+ "raіɴbοw", // hue: 218
+ "rаіnЬow", // hue: 218
+ "ʀaiɴbοѡ", // hue: 221
+ "ʀaiɴЬοw", // hue: 224
+ "ʀaіnbοѡ", // hue: 227
+ "raiɴboѡ", // hue: 230
+ "ʀaіnbοw", // hue: 230
+ "ʀaіnЬοw", // hue: 230
+ "ʀаinЬοѡ", // hue: 231
+ "rainboѡ", // hue: 232
+ "raіnbow", // hue: 232
+ "ʀаіɴЬow", // hue: 233
+ "ʀaіɴЬoѡ", // hue: 239
+ "ʀаіnЬοѡ", // hue: 246
+ "raiɴbοѡ", // hue: 248
+ "ʀаiɴЬow", // hue: 248
+ "raіɴЬοѡ", // hue: 249
+ "raiɴЬοw", // hue: 251
+ "rаіɴЬoѡ", // hue: 251
+ "ʀaiɴbow", // hue: 251
+ "ʀаinbοw", // hue: 251
+ "raіnbοѡ", // hue: 254
+];
+++ /dev/null
-// rustfmt-fn_args_layout: Compressed
-// Function arguments density
-
-trait Lorem {
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
- // body
- }
-
- fn lorem(
- ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur,
- adipiscing: Adipiscing, elit: Elit,
- );
-
- fn lorem(
- ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur,
- adipiscing: Adipiscing, elit: Elit,
- ) {
- // body
- }
-}
+++ /dev/null
-// rustfmt-fn_args_layout: Tall
-// Function arguments density
-
-trait Lorem {
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
-
- fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
- // body
- }
-
- fn lorem(
- ipsum: Ipsum,
- dolor: Dolor,
- sit: Sit,
- amet: Amet,
- consectetur: onsectetur,
- adipiscing: Adipiscing,
- elit: Elit,
- );
-
- fn lorem(
- ipsum: Ipsum,
- dolor: Dolor,
- sit: Sit,
- amet: Amet,
- consectetur: onsectetur,
- adipiscing: Adipiscing,
- elit: Elit,
- ) {
- // body
- }
-}
+++ /dev/null
-// rustfmt-fn_args_layout: Vertical
-// Function arguments density
-
-trait Lorem {
- fn lorem(
- ipsum: Ipsum,
- dolor: Dolor,
- sit: Sit,
- amet: Amet,
- );
-
- fn lorem(
- ipsum: Ipsum,
- dolor: Dolor,
- sit: Sit,
- amet: Amet,
- ) {
- // body
- }
-
- fn lorem(
- ipsum: Ipsum,
- dolor: Dolor,
- sit: Sit,
- amet: Amet,
- consectetur: onsectetur,
- adipiscing: Adipiscing,
- elit: Elit,
- );
-
- fn lorem(
- ipsum: Ipsum,
- dolor: Dolor,
- sit: Sit,
- amet: Amet,
- consectetur: onsectetur,
- adipiscing: Adipiscing,
- elit: Elit,
- ) {
- // body
- }
-}
--- /dev/null
+// rustfmt-fn_params_layout: Compressed
+// Function arguments density
+
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(
+ ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur,
+ adipiscing: Adipiscing, elit: Elit,
+ );
+
+ fn lorem(
+ ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet, consectetur: onsectetur,
+ adipiscing: Adipiscing, elit: Elit,
+ ) {
+ // body
+ }
+}
--- /dev/null
+// rustfmt-fn_params_layout: Tall
+// Function arguments density
+
+trait Lorem {
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet);
+
+ fn lorem(ipsum: Ipsum, dolor: Dolor, sit: Sit, amet: Amet) {
+ // body
+ }
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: onsectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ );
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: onsectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ ) {
+ // body
+ }
+}
--- /dev/null
+// rustfmt-fn_params_layout: Vertical
+// Function arguments density
+
+trait Lorem {
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ );
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ ) {
+ // body
+ }
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: onsectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ );
+
+ fn lorem(
+ ipsum: Ipsum,
+ dolor: Dolor,
+ sit: Sit,
+ amet: Amet,
+ consectetur: onsectetur,
+ adipiscing: Adipiscing,
+ elit: Elit,
+ ) {
+ // body
+ }
+}
x: i32, // Test comment
// Pre-comment
#[Attr50]
- y: SomeType, // Aanother Comment
+ y: SomeType, // Another Comment
},
SL {
a: A,
// rustfmt-normalize_comments: true
-// rustfmt-fn_args_layout: Vertical
+// rustfmt-fn_params_layout: Vertical
// rustfmt-brace_style: AlwaysNextLine
// Case with only one variable.
-// rustfmt-fn_args_layout: Compressed
+// rustfmt-fn_params_layout: Compressed
// Test some of the ways function signatures can be customised.
// Test compressed layout of args.
-// rustfmt-fn_args_layout: Vertical
+// rustfmt-fn_params_layout: Vertical
// Empty list should stay on one line.
fn do_bar() -> u8 {
--- /dev/null
+// rustfmt-format_macro_matchers: false
+
+macro_rules! foo {
+ ($a:ident : $b:ty) => {};
+ ($a:ident $b:ident $c:ident) => {};
+}
--- /dev/null
+// rustfmt-format_macro_matchers: true
+
+macro_rules! foo {
+ ($a:ident : $b:ty) => {};
+ ($a:ident $b:ident $c:ident) => {};
+}
--- /dev/null
+// rustfmt-format_macro_bodies: false
+
+// with comments
+macro_rules! macros {
+ () => {{
+ Struct {
+ field: (
+ 42 + //comment 1
+ 42
+ //comment 2
+ ),
+ };
+ }};
+}
+
+// without comments
+macro_rules! macros {
+ () => {{
+ Struct {
+ field: (
+ 42 +
+ 42
+ ),
+ };
+ }};
+}
--- /dev/null
+// rustfmt-format_macro_bodies: true
+
+// with comments
+macro_rules! macros {
+ () => {{
+ Struct {
+ field: (
+ 42 + //comment 1
+ 42
+ //comment 2
+ ),
+ };
+ }};
+}
+
+// without comments
+macro_rules! macros {
+ () => {{
+ Struct { field: (42 + 42) };
+ }};
+}
--- /dev/null
+// output doesn't get corrupted when using comments within generic type parameters of a trait
+
+pub trait Something<
+ A,
+ // some comment
+ B,
+ C,
+>
+{
+ fn a(&self, x: A) -> i32;
+ fn b(&self, x: B) -> i32;
+ fn c(&self, x: C) -> i32;
+}
+
+pub trait SomethingElse<A, /* some comment */ B, C> {
+ fn a(&self, x: A) -> i32;
+ fn b(&self, x: B) -> i32;
+ fn c(&self, x: C) -> i32;
+}
--- /dev/null
+// rustfmt-version: One
+
+// Based on the issue description
+pub trait PrettyPrinter<'tcx>:
+ Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+>
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ > + fmt::Write
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ > + fmt::Write1
+ + fmt::Write2
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ fmt::Write
+ + Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ >
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ fmt::Write
+ + Printer1<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ > + Printer2<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ >
+{
+ //
+}
+
+// Some test cases to ensure other cases formatting were not changed
+fn f() -> Box<
+ FnMut() -> Thing<
+ WithType = LongItemName,
+ Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+ >,
+> {
+}
+fn f() -> Box<
+ FnMut() -> Thing<
+ WithType = LongItemName,
+ Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+ > + fmt::Write1
+ + fmt::Write2,
+> {
+}
+
+fn foo<F>(foo2: F)
+where
+ F: Fn(
+ // this comment is deleted
+ ),
+{
+}
+fn foo<F>(foo2: F)
+where
+ F: Fn(
+ // this comment is deleted
+ ) + fmt::Write,
+{
+}
+
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+ F: FnMut(
+ &mut ProbeContext,
+ ty::PolyTraitRefffffffffffffffffffffffffffffffff,
+ tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+ ),
+{
+}
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+ F: FnMut(
+ &mut ProbeContext,
+ ty::PolyTraitRefffffffffffffffffffffffffffffffff,
+ tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+ ) + fmt::Write,
+{
+}
+
+fn build_sorted_static_get_entry_names(
+ mut entries: entryyyyyyyy,
+) -> (impl Fn(
+ AlphabeticalTraversal,
+ Seconddddddddddddddddddddddddddddddddddd,
+) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
+ + Sendddddddddddddddddddddddddddddddddddddddddddd) {
+}
+
+pub trait SomeTrait:
+ Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
+ + Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
+{
+}
+
+trait B = where
+ for<'b> &'b Self: Send
+ + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
+ + Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy;
--- /dev/null
+// rustfmt-version: Two
+
+// Based on the issue description
+pub trait PrettyPrinter<'tcx>:
+ Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ >
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ > + fmt::Write
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ > + fmt::Write1
+ + fmt::Write2
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ fmt::Write
+ + Printer<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ >
+{
+ //
+}
+pub trait PrettyPrinter<'tcx>:
+ fmt::Write
+ + Printer1<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ > + Printer2<
+ 'tcx,
+ Error = fmt::Error,
+ Path = Self,
+ Region = Self,
+ Type = Self,
+ DynExistential = Self,
+ Const = Self,
+ >
+{
+ //
+}
+
+// Some test cases to ensure other cases formatting were not changed
+fn f() -> Box<
+ FnMut() -> Thing<
+ WithType = LongItemName,
+ Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+ >,
+> {
+}
+fn f() -> Box<
+ FnMut() -> Thing<
+ WithType = LongItemName,
+ Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+ > + fmt::Write1
+ + fmt::Write2,
+> {
+}
+
+fn foo<F>(foo2: F)
+where
+ F: Fn(
+ // this comment is deleted
+ ),
+{
+}
+fn foo<F>(foo2: F)
+where
+ F: Fn(
+ // this comment is deleted
+ ) + fmt::Write,
+{
+}
+
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+ F: FnMut(
+ &mut ProbeContext,
+ ty::PolyTraitRefffffffffffffffffffffffffffffffff,
+ tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+ ),
+{
+}
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+ F: FnMut(
+ &mut ProbeContext,
+ ty::PolyTraitRefffffffffffffffffffffffffffffffff,
+ tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+ ) + fmt::Write,
+{
+}
+
+fn build_sorted_static_get_entry_names(
+ mut entries: entryyyyyyyy,
+) -> (
+ impl Fn(
+ AlphabeticalTraversal,
+ Seconddddddddddddddddddddddddddddddddddd,
+ ) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
+ + Sendddddddddddddddddddddddddddddddddddddddddddd
+) {
+}
+
+pub trait SomeTrait:
+ Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
+ + Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
+{
+}
+
+trait B = where
+ for<'b> &'b Self: Send
+ + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
+ + Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy;
// rustfmt-brace_style: SameLineWhere
// rustfmt-comment_width: 100
// rustfmt-edition: 2018
-// rustfmt-fn_args_layout: Compressed
+// rustfmt-fn_params_layout: Compressed
// rustfmt-hard_tabs: false
// rustfmt-match_block_trailing_comma: true
// rustfmt-max_width: 100
--- /dev/null
+// Test /* comment */ inside trait generics does not get duplicated.
+trait Test</* comment */ T> {}
+
+trait TestTwo</* comment */ T, /* comment */ V> {}
--- /dev/null
+// rustfmt-max_width: 160
+// rustfmt-fn_call_width: 96
+// rustfmt-fn_args_layout: Compressed
+// rustfmt-trailing_comma: Always
+// rustfmt-wrap_comments: true
+
+fn foo() {
+ for elem in try!(gen_epub_book::ops::parse_descriptor_file(
+ &mut try!(File::open(&opts.source_file.1).map_err(|_| {
+ gen_epub_book::Error::Io {
+ desc: "input file",
+ op: "open",
+ more: None,
+ }
+ })),
+ "input file"
+ )) {
+ println!("{}", elem);
+ }
+}
+
+fn write_content() {
+ io::copy(
+ try!(File::open(in_f).map_err(|_| {
+ Error::Io {
+ desc: "Content",
+ op: "open",
+ more: None,
+ }
+ })),
+ w,
+ );
+}
--- /dev/null
+use dom::bindings::codegen::Bindings::BluetoothRemoteGATTServerBinding::BluetoothRemoteGATTServerBinding::
+ BluetoothRemoteGATTServerMethods;
--- /dev/null
+fn main() {
+ let x = 1;
+ let y = 3;
+}
--- /dev/null
+fn main() {
+ 7
+}
+
+fn main() {
+ 7
+}
--- /dev/null
+//rustfmt-format_macro_bodies: true
+
+macro_rules! mto_text_left {
+ ($buf:ident, $n:ident, $pos:ident, $state:ident) => {{
+ let cursor = loop {
+ state = match iter.next() {
+ None if $pos == DP::Start => break last_char_idx($buf),
+ None /*some comment */ => break 0,
+ };
+ };
+ Ok(saturate_cursor($buf, cursor))
+ }};
+}
--- /dev/null
+type Foo = impl Send;
+struct Struct<
+ const C: usize = {
+ let _: Foo = ();
+ //~^ ERROR: mismatched types
+ 0
+ },
+>;
--- /dev/null
+// rustfmt-skip_macro_invocations: ["*"]
+
+// Should skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should skip this invocation
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["*","items"]
+
+// Should skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should also skip this invocation, as the wildcard covers it
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: []
+
+// Should not skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should not skip this invocation
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["items"]
+
+// Should skip this invocation
+items!(
+ const _: u8 = 0;
+);
+
+// Should not skip this invocation
+renamed_items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["unknown"]
+
+// Should not skip this invocation
+items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["foo","bar"]
+
+// Should skip this invocation
+foo!(
+ const _: u8 = 0;
+);
+
+// Should skip this invocation
+bar!(
+ const _: u8 = 0;
+);
+
+// Should not skip this invocation
+baz!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["items"]
+
+// Should not skip this invocation
+self::items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["self::items"]
+
+// Should skip this invocation
+self::items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["self::items"]
+
+// Should not skip this invocation
+items!(
+ const _: u8 = 0;
+);
--- /dev/null
+// rustfmt-skip_macro_invocations: ["aaa","ccc"]
+
+// These tests demonstrate a realistic use case with use aliases.
+// The use statements should not impact functionality in any way.
+
+use crate::{aaa, bbb, ddd};
+
+// No use alias, invocation in list
+// Should skip this invocation
+aaa!(
+ const _: u8 = 0;
+);
+
+// Use alias, invocation in list
+// Should skip this invocation
+use crate::bbb as ccc;
+ccc!(
+ const _: u8 = 0;
+);
+
+// Use alias, invocation not in list
+// Should not skip this invocation
+use crate::ddd as eee;
+eee!(
+ const _: u8 = 0;
+);
+
+// No use alias, invocation not in list
+// Should not skip this invocation
+fff!(
+ const _: u8 = 0;
+);
-// Test tuple litterals
+// Test tuple literals
fn foo() {
let a = (a, a, a, a, a);
/// ```
fn foo() {}
-/// A long commment for wrapping
+/// A long comment for wrapping
/// This is a long long long long long long long long long long long long long
/// long long long long long long long sentence.
fn bar() {}
("cranelift-codegen", "Apache-2.0 WITH LLVM-exception"),
("cranelift-codegen-meta", "Apache-2.0 WITH LLVM-exception"),
("cranelift-codegen-shared", "Apache-2.0 WITH LLVM-exception"),
- ("cranelift-egraph", "Apache-2.0 WITH LLVM-exception"),
("cranelift-entity", "Apache-2.0 WITH LLVM-exception"),
("cranelift-frontend", "Apache-2.0 WITH LLVM-exception"),
("cranelift-isle", "Apache-2.0 WITH LLVM-exception"),
"cranelift-codegen",
"cranelift-codegen-meta",
"cranelift-codegen-shared",
- "cranelift-egraph",
"cranelift-entity",
"cranelift-frontend",
"cranelift-isle",
"winapi-i686-pc-windows-gnu",
"winapi-x86_64-pc-windows-gnu",
"windows-sys",
+ "windows_aarch64_gnullvm",
"windows_aarch64_msvc",
"windows_i686_gnu",
"windows_i686_msvc",
"windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
"windows_x86_64_msvc",
];
// as long as it doesn't cause a verifier error by using `bitcast`.
transmute(x)
}
+
+pub enum Either<T, U> { A(T), B(U) }
+
+// Previously, we would codegen this as passing/returning a scalar pair of `{ i8, ptr }`,
+// with the `ptr` field representing both `&i32` and `fn()` depending on the variant.
+// This is incorrect, because `fn()` should be `ptr addrspace(1)`, not `ptr`.
+
+// CHECK: define{{.+}}void @should_not_combine_addrspace({{.+\*|ptr}}{{.+}}sret{{.+}}%0, {{.+\*|ptr}}{{.+}}%x)
+#[no_mangle]
+#[inline(never)]
+pub fn should_not_combine_addrspace(x: Either<&i32, fn()>) -> Either<&i32, fn()> {
+ x
+}
+
+// The incorrectness described above would result in us producing (after optimizations)
+// a `ptrtoint`/`inttoptr` roundtrip to convert from `ptr` to `ptr addrspace(1)`.
+
+// CHECK-LABEL: @call_with_fn_ptr
+#[no_mangle]
+pub fn call_with_fn_ptr<'a>(f: fn()) -> Either<&'a i32, fn()> {
+ // CHECK-NOT: ptrtoint
+ // CHECK-NOT: inttoptr
+ // CHECK: call addrspace(1) void @should_not_combine_addrspace
+ should_not_combine_addrspace(Either::B(f))
+}
+++ /dev/null
-- // MIR for `encode` before SimplifyBranchSame
-+ // MIR for `encode` after SimplifyBranchSame
-
- fn encode(_1: Type) -> Type {
- debug v => _1; // in scope 0 at $DIR/76803_regression.rs:+0:15: +0:16
- let mut _0: Type; // return place in scope 0 at $DIR/76803_regression.rs:+0:27: +0:31
- let mut _2: isize; // in scope 0 at $DIR/76803_regression.rs:+2:9: +2:16
-
- bb0: {
- _2 = discriminant(_1); // scope 0 at $DIR/76803_regression.rs:+1:11: +1:12
- switchInt(move _2) -> [0: bb2, otherwise: bb1]; // scope 0 at $DIR/76803_regression.rs:+1:5: +1:12
- }
-
- bb1: {
- _0 = move _1; // scope 0 at $DIR/76803_regression.rs:+3:14: +3:15
- goto -> bb3; // scope 0 at $DIR/76803_regression.rs:+3:14: +3:15
- }
-
- bb2: {
- Deinit(_0); // scope 0 at $DIR/76803_regression.rs:+2:20: +2:27
- discriminant(_0) = 1; // scope 0 at $DIR/76803_regression.rs:+2:20: +2:27
- goto -> bb3; // scope 0 at $DIR/76803_regression.rs:+2:20: +2:27
- }
-
- bb3: {
- return; // scope 0 at $DIR/76803_regression.rs:+5:2: +5:2
- }
- }
-
+++ /dev/null
-// compile-flags: -Z mir-opt-level=1
-// EMIT_MIR 76803_regression.encode.SimplifyBranchSame.diff
-
-#[derive(Debug, Eq, PartialEq)]
-pub enum Type {
- A,
- B,
-}
-
-pub fn encode(v: Type) -> Type {
- match v {
- Type::A => Type::B,
- _ => v,
- }
-}
-
-fn main() {
- assert_eq!(Type::B, encode(Type::A));
-}
--- /dev/null
+// MIR for `arrays` after built
+
+fn arrays() -> usize {
+ let mut _0: usize; // return place in scope 0 at $DIR/arrays.rs:+0:32: +0:37
+ let mut _1: [i32; C]; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+ let mut _2: usize; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+
+ bb0: {
+ _1 = [const 5_i32; C]; // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+ _2 = Len(_1); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+ _0 = _2; // scope 0 at $DIR/arrays.rs:+4:9: +4:16
+ return; // scope 0 at $DIR/arrays.rs:+5:9: +5:17
+ }
+}
--- /dev/null
+#![feature(custom_mir, core_intrinsics, inline_const)]
+
+extern crate core;
+use core::intrinsics::mir::*;
+
+// EMIT_MIR arrays.arrays.built.after.mir
+#[custom_mir(dialect = "built")]
+fn arrays<const C: usize>() -> usize {
+ mir!({
+ let x = [5_i32; C];
+ let c = Len(x);
+ RET = c;
+ Return()
+ })
+}
+
+fn main() {
+ assert_eq!(arrays::<20>(), 20);
+}
#[custom_mir(dialect = "runtime", phase = "initial")]
fn set_discr(option: &mut Option<()>) {
mir!({
+ Deinit(*option);
SetDiscriminant(*option, 0);
Return()
})
let mut _0: (); // return place in scope 0 at $DIR/enums.rs:+0:39: +0:39
bb0: {
- discriminant((*_1)) = 0; // scope 0 at $DIR/enums.rs:+2:9: +2:36
- return; // scope 0 at $DIR/enums.rs:+3:9: +3:17
+ Deinit((*_1)); // scope 0 at $DIR/enums.rs:+2:9: +2:24
+ discriminant((*_1)) = 0; // scope 0 at $DIR/enums.rs:+3:9: +3:36
+ return; // scope 0 at $DIR/enums.rs:+4:9: +4:17
}
}
--- /dev/null
+// MIR for `f` after built
+
+fn f(_1: i32, _2: bool) -> i32 {
+ let mut _0: i32; // return place in scope 0 at $DIR/operators.rs:+0:30: +0:33
+ let mut _3: (i32, bool); // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+
+ bb0: {
+ _1 = Neg(_1); // scope 0 at $DIR/operators.rs:+2:9: +2:15
+ _2 = Not(_2); // scope 0 at $DIR/operators.rs:+3:9: +3:15
+ _1 = Add(_1, _1); // scope 0 at $DIR/operators.rs:+4:9: +4:18
+ _1 = Sub(_1, _1); // scope 0 at $DIR/operators.rs:+5:9: +5:18
+ _1 = Mul(_1, _1); // scope 0 at $DIR/operators.rs:+6:9: +6:18
+ _1 = Div(_1, _1); // scope 0 at $DIR/operators.rs:+7:9: +7:18
+ _1 = Rem(_1, _1); // scope 0 at $DIR/operators.rs:+8:9: +8:18
+ _1 = BitXor(_1, _1); // scope 0 at $DIR/operators.rs:+9:9: +9:18
+ _1 = BitAnd(_1, _1); // scope 0 at $DIR/operators.rs:+10:9: +10:18
+ _1 = Shl(_1, _1); // scope 0 at $DIR/operators.rs:+11:9: +11:19
+ _1 = Shr(_1, _1); // scope 0 at $DIR/operators.rs:+12:9: +12:19
+ _2 = Eq(_1, _1); // scope 0 at $DIR/operators.rs:+13:9: +13:19
+ _2 = Lt(_1, _1); // scope 0 at $DIR/operators.rs:+14:9: +14:18
+ _2 = Le(_1, _1); // scope 0 at $DIR/operators.rs:+15:9: +15:19
+ _2 = Ge(_1, _1); // scope 0 at $DIR/operators.rs:+16:9: +16:19
+ _2 = Gt(_1, _1); // scope 0 at $DIR/operators.rs:+17:9: +17:18
+ _3 = CheckedAdd(_1, _1); // scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL
+ _2 = (_3.1: bool); // scope 0 at $DIR/operators.rs:+19:9: +19:18
+ _1 = (_3.0: i32); // scope 0 at $DIR/operators.rs:+20:9: +20:18
+ _0 = _1; // scope 0 at $DIR/operators.rs:+21:9: +21:16
+ return; // scope 0 at $DIR/operators.rs:+22:9: +22:17
+ }
+}
--- /dev/null
+// compile-flags: --crate-type=lib
+#![feature(custom_mir, core_intrinsics, inline_const)]
+use std::intrinsics::mir::*;
+
+// EMIT_MIR operators.f.built.after.mir
+#[custom_mir(dialect = "built")]
+pub fn f(a: i32, b: bool) -> i32 {
+ mir!({
+ a = -a;
+ b = !b;
+ a = a + a;
+ a = a - a;
+ a = a * a;
+ a = a / a;
+ a = a % a;
+ a = a ^ a;
+ a = a & a;
+ a = a << a;
+ a = a >> a;
+ b = a == a;
+ b = a < a;
+ b = a <= a;
+ b = a >= a;
+ b = a > a;
+ let res = Checked(a + a);
+ b = res.1;
+ a = res.0;
+ RET = a;
+ Return()
+ })
+}
--- /dev/null
+- // MIR for `generic` before InstCombine
++ // MIR for `generic` after InstCombine
+
+ fn generic() -> () {
+ let mut _0: (); // return place in scope 0 at $DIR/intrinsic_asserts.rs:+0:21: +0:21
+ let _1: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:46
+ let _2: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:47
+ let _3: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:60
+
+ bb0: {
+ StorageLive(_1); // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:46
+ _1 = assert_inhabited::<T>() -> bb1; // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:46
+ // mir::Constant
+ // + span: $DIR/intrinsic_asserts.rs:25:5: 25:44
+ // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_inhabited::<T>}, val: Value(<ZST>) }
+ }
+
+ bb1: {
+ StorageDead(_1); // scope 0 at $DIR/intrinsic_asserts.rs:+1:46: +1:47
+ StorageLive(_2); // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:47
+ _2 = assert_zero_valid::<T>() -> bb2; // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:47
+ // mir::Constant
+ // + span: $DIR/intrinsic_asserts.rs:26:5: 26:45
+ // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_zero_valid::<T>}, val: Value(<ZST>) }
+ }
+
+ bb2: {
+ StorageDead(_2); // scope 0 at $DIR/intrinsic_asserts.rs:+2:47: +2:48
+ StorageLive(_3); // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:60
+ _3 = assert_mem_uninitialized_valid::<T>() -> bb3; // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:60
+ // mir::Constant
+ // + span: $DIR/intrinsic_asserts.rs:27:5: 27:58
+ // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_mem_uninitialized_valid::<T>}, val: Value(<ZST>) }
+ }
+
+ bb3: {
+ StorageDead(_3); // scope 0 at $DIR/intrinsic_asserts.rs:+3:60: +3:61
+ nop; // scope 0 at $DIR/intrinsic_asserts.rs:+0:21: +4:2
+ return; // scope 0 at $DIR/intrinsic_asserts.rs:+4:2: +4:2
+ }
+ }
+
--- /dev/null
+- // MIR for `panics` before InstCombine
++ // MIR for `panics` after InstCombine
+
+ fn panics() -> () {
+ let mut _0: (); // return place in scope 0 at $DIR/intrinsic_asserts.rs:+0:17: +0:17
+ let _1: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:50
+ let _2: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:49
+ let _3: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:62
+
+ bb0: {
+ StorageLive(_1); // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:50
+- _1 = assert_inhabited::<Never>() -> bb1; // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:50
++ _1 = assert_inhabited::<Never>(); // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:50
+ // mir::Constant
+ // + span: $DIR/intrinsic_asserts.rs:17:5: 17:48
+ // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_inhabited::<Never>}, val: Value(<ZST>) }
+ }
+
+ bb1: {
+ StorageDead(_1); // scope 0 at $DIR/intrinsic_asserts.rs:+1:50: +1:51
+ StorageLive(_2); // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:49
+- _2 = assert_zero_valid::<&u8>() -> bb2; // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:49
++ _2 = assert_zero_valid::<&u8>(); // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:49
+ // mir::Constant
+ // + span: $DIR/intrinsic_asserts.rs:18:5: 18:47
+ // + user_ty: UserType(0)
+ // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_zero_valid::<&u8>}, val: Value(<ZST>) }
+ }
+
+ bb2: {
+ StorageDead(_2); // scope 0 at $DIR/intrinsic_asserts.rs:+2:49: +2:50
+ StorageLive(_3); // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:62
+- _3 = assert_mem_uninitialized_valid::<&u8>() -> bb3; // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:62
++ _3 = assert_mem_uninitialized_valid::<&u8>(); // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:62
+ // mir::Constant
+ // + span: $DIR/intrinsic_asserts.rs:19:5: 19:60
+ // + user_ty: UserType(1)
+ // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_mem_uninitialized_valid::<&u8>}, val: Value(<ZST>) }
+ }
+
+ bb3: {
+ StorageDead(_3); // scope 0 at $DIR/intrinsic_asserts.rs:+3:62: +3:63
+ nop; // scope 0 at $DIR/intrinsic_asserts.rs:+0:17: +4:2
+ return; // scope 0 at $DIR/intrinsic_asserts.rs:+4:2: +4:2
+ }
+ }
+
--- /dev/null
+- // MIR for `removable` before InstCombine
++ // MIR for `removable` after InstCombine
+
+ fn removable() -> () {
+ let mut _0: (); // return place in scope 0 at $DIR/intrinsic_asserts.rs:+0:20: +0:20
+ let _1: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:47
+ let _2: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:48
+ let _3: (); // in scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:61
+
+ bb0: {
+ StorageLive(_1); // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:47
+- _1 = assert_inhabited::<()>() -> bb1; // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:47
+- // mir::Constant
+- // + span: $DIR/intrinsic_asserts.rs:7:5: 7:45
+- // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_inhabited::<()>}, val: Value(<ZST>) }
++ goto -> bb1; // scope 0 at $DIR/intrinsic_asserts.rs:+1:5: +1:47
+ }
+
+ bb1: {
+ StorageDead(_1); // scope 0 at $DIR/intrinsic_asserts.rs:+1:47: +1:48
+ StorageLive(_2); // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:48
+- _2 = assert_zero_valid::<u8>() -> bb2; // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:48
+- // mir::Constant
+- // + span: $DIR/intrinsic_asserts.rs:8:5: 8:46
+- // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_zero_valid::<u8>}, val: Value(<ZST>) }
++ goto -> bb2; // scope 0 at $DIR/intrinsic_asserts.rs:+2:5: +2:48
+ }
+
+ bb2: {
+ StorageDead(_2); // scope 0 at $DIR/intrinsic_asserts.rs:+2:48: +2:49
+ StorageLive(_3); // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:61
+- _3 = assert_mem_uninitialized_valid::<u8>() -> bb3; // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:61
+- // mir::Constant
+- // + span: $DIR/intrinsic_asserts.rs:9:5: 9:59
+- // + literal: Const { ty: extern "rust-intrinsic" fn() {assert_mem_uninitialized_valid::<u8>}, val: Value(<ZST>) }
++ goto -> bb3; // scope 0 at $DIR/intrinsic_asserts.rs:+3:5: +3:61
+ }
+
+ bb3: {
+ StorageDead(_3); // scope 0 at $DIR/intrinsic_asserts.rs:+3:61: +3:62
+ nop; // scope 0 at $DIR/intrinsic_asserts.rs:+0:20: +4:2
+ return; // scope 0 at $DIR/intrinsic_asserts.rs:+4:2: +4:2
+ }
+ }
+
--- /dev/null
+#![crate_type = "lib"]
+#![feature(core_intrinsics)]
+
+// All these assertions pass, so all the intrinsic calls should be deleted.
+// EMIT_MIR intrinsic_asserts.removable.InstCombine.diff
+pub fn removable() {
+ core::intrinsics::assert_inhabited::<()>();
+ core::intrinsics::assert_zero_valid::<u8>();
+ core::intrinsics::assert_mem_uninitialized_valid::<u8>();
+}
+
+enum Never {}
+
+// These assertions all diverge, so their target blocks should become None.
+// EMIT_MIR intrinsic_asserts.panics.InstCombine.diff
+pub fn panics() {
+ core::intrinsics::assert_inhabited::<Never>();
+ core::intrinsics::assert_zero_valid::<&u8>();
+ core::intrinsics::assert_mem_uninitialized_valid::<&u8>();
+}
+
+// Whether or not these asserts pass isn't known, so they shouldn't be modified.
+// EMIT_MIR intrinsic_asserts.generic.InstCombine.diff
+pub fn generic<T>() {
+ core::intrinsics::assert_inhabited::<T>();
+ core::intrinsics::assert_zero_valid::<T>();
+ core::intrinsics::assert_mem_uninitialized_valid::<T>();
+}
+++ /dev/null
-- // MIR for `main` before SimplifyArmIdentity
-+ // MIR for `main` after SimplifyArmIdentity
-
- fn main() -> () {
- let mut _0: (); // return place in scope 0 at $DIR/issue_73223.rs:+0:11: +0:11
- let _1: i32; // in scope 0 at $DIR/issue_73223.rs:+1:9: +1:14
- let mut _2: std::option::Option<i32>; // in scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- let mut _3: isize; // in scope 0 at $DIR/issue_73223.rs:+2:9: +2:16
- let _4: i32; // in scope 0 at $DIR/issue_73223.rs:+2:14: +2:15
- let mut _6: i32; // in scope 0 at $DIR/issue_73223.rs:+6:22: +6:27
- let mut _7: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _8: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _11: bool; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _12: bool; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _13: i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _14: i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let _16: !; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _17: core::panicking::AssertKind; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _18: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let _19: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _20: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let _21: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _22: std::option::Option<std::fmt::Arguments<'_>>; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _24: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _25: &i32; // in scope 0 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- scope 1 {
- debug split => _1; // in scope 1 at $DIR/issue_73223.rs:+1:9: +1:14
- let _5: std::option::Option<i32>; // in scope 1 at $DIR/issue_73223.rs:+6:9: +6:14
- scope 3 {
- debug _prev => _5; // in scope 3 at $DIR/issue_73223.rs:+6:9: +6:14
- let _9: &i32; // in scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let _10: &i32; // in scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let mut _23: &i32; // in scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- scope 4 {
- debug left_val => _9; // in scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- debug right_val => _10; // in scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- let _15: core::panicking::AssertKind; // in scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- scope 5 {
- debug kind => _15; // in scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- }
- }
- }
- }
- scope 2 {
- debug v => _4; // in scope 2 at $DIR/issue_73223.rs:+2:14: +2:15
- }
-
- bb0: {
- StorageLive(_1); // scope 0 at $DIR/issue_73223.rs:+1:9: +1:14
- StorageLive(_2); // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- Deinit(_2); // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- ((_2 as Some).0: i32) = const 1_i32; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- discriminant(_2) = 1; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- _3 = const 1_isize; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- goto -> bb3; // scope 0 at $DIR/issue_73223.rs:+1:17: +1:30
- }
-
- bb1: {
- StorageDead(_2); // scope 0 at $DIR/issue_73223.rs:+4:6: +4:7
- StorageDead(_1); // scope 0 at $DIR/issue_73223.rs:+8:1: +8:2
- return; // scope 0 at $DIR/issue_73223.rs:+8:2: +8:2
- }
-
- bb2: {
- unreachable; // scope 0 at $DIR/issue_73223.rs:+1:23: +1:30
- }
-
- bb3: {
- StorageLive(_4); // scope 0 at $DIR/issue_73223.rs:+2:14: +2:15
- _4 = ((_2 as Some).0: i32); // scope 0 at $DIR/issue_73223.rs:+2:14: +2:15
- _1 = _4; // scope 2 at $DIR/issue_73223.rs:+2:20: +2:21
- StorageDead(_4); // scope 0 at $DIR/issue_73223.rs:+2:20: +2:21
- StorageDead(_2); // scope 0 at $DIR/issue_73223.rs:+4:6: +4:7
- StorageLive(_5); // scope 1 at $DIR/issue_73223.rs:+6:9: +6:14
- StorageLive(_6); // scope 1 at $DIR/issue_73223.rs:+6:22: +6:27
- _6 = _1; // scope 1 at $DIR/issue_73223.rs:+6:22: +6:27
- Deinit(_5); // scope 1 at $DIR/issue_73223.rs:+6:17: +6:28
- ((_5 as Some).0: i32) = move _6; // scope 1 at $DIR/issue_73223.rs:+6:17: +6:28
- discriminant(_5) = 1; // scope 1 at $DIR/issue_73223.rs:+6:17: +6:28
- StorageDead(_6); // scope 1 at $DIR/issue_73223.rs:+6:27: +6:28
- StorageLive(_24); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_25); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_7); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _7 = &_1; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_8); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _23 = const _; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // mir::Constant
- // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // + literal: Const { ty: &i32, val: Unevaluated(main, [], Some(promoted[0])) }
- _8 = _23; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- Deinit(_24); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- Deinit(_25); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _24 = move _7; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _25 = move _8; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_8); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_7); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_9); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _9 = _24; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_10); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _10 = _25; // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_11); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_12); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_13); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _13 = (*_9); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_14); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _14 = const 1_i32; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _12 = Eq(move _13, const 1_i32); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_14); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_13); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _11 = Not(move _12); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_12); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- switchInt(move _11) -> [0: bb5, otherwise: bb4]; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- }
-
- bb4: {
- StorageLive(_15); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- Deinit(_15); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- discriminant(_15) = 0; // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_16); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_17); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _17 = const core::panicking::AssertKind::Eq; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // mir::Constant
- // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // + literal: Const { ty: core::panicking::AssertKind, val: Value(Scalar(0x00)) }
- StorageLive(_18); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_19); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _19 = _9; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _18 = _19; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_20); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_21); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _21 = _10; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _20 = _21; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageLive(_22); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- Deinit(_22); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- discriminant(_22) = 0; // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- _16 = core::panicking::assert_failed::<i32, i32>(const core::panicking::AssertKind::Eq, move _18, move _20, move _22); // scope 5 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // mir::Constant
- // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // + literal: Const { ty: for<'a, 'b, 'c> fn(core::panicking::AssertKind, &'a i32, &'b i32, Option<Arguments<'c>>) -> ! {core::panicking::assert_failed::<i32, i32>}, val: Value(<ZST>) }
- // mir::Constant
- // + span: $SRC_DIR/core/src/macros/mod.rs:LL:COL
- // + literal: Const { ty: core::panicking::AssertKind, val: Value(Scalar(0x00)) }
- }
-
- bb5: {
- StorageDead(_11); // scope 4 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_10); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_9); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_24); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_25); // scope 3 at $SRC_DIR/core/src/macros/mod.rs:LL:COL
- StorageDead(_5); // scope 1 at $DIR/issue_73223.rs:+8:1: +8:2
- StorageDead(_1); // scope 0 at $DIR/issue_73223.rs:+8:1: +8:2
- return; // scope 0 at $DIR/issue_73223.rs:+8:2: +8:2
- }
- }
-
+++ /dev/null
-fn main() {
- let split = match Some(1) {
- Some(v) => v,
- None => return,
- };
-
- let _prev = Some(split);
- assert_eq!(split, 1);
-}
-
-
-// EMIT_MIR issue_73223.main.SimplifyArmIdentity.diff
// pretty-mode:expanded
// pp-exact:dollar-crate.pp
-fn main() {
- { ::std::io::_print(::core::fmt::Arguments::new_v1(&["rust\n"], &[])); };
-}
+fn main() { { ::std::io::_print(format_args!("rust\n")); }; }
({
let res =
((::alloc::fmt::format as
- for<'a> fn(Arguments<'a>) -> String {format})(((::core::fmt::Arguments::new_v1
+ for<'a> fn(Arguments<'a>) -> String {format})(((<#[lang = "format_arguments"]>::new_v1
as
fn(&[&'static str], &[ArgumentV1<'_>]) -> Arguments<'_> {Arguments::<'_>::new_v1})((&([("test"
as &str)] as [&str; 1]) as &[&str; 1]),
$(RUSTC) $(UNSTABLEOPTS) -C split-debuginfo=unpacked -C debuginfo=2 \
-Z split-dwarf-kind=single --remap-path-prefix $(TMPDIR)=/a foo.rs -g
objdump -Wi $(TMPDIR)/foo | grep DW_AT_GNU_dwo_name | (! grep $(TMPDIR)) || exit 1
- ls $(TMPDIR)/*.o
+ rm $(TMPDIR)/*.o
ls $(TMPDIR)/*.dwo && exit 1 || exit 0
ls $(TMPDIR)/*.dwp && exit 1 || exit 0
rm $(TMPDIR)/$(call BIN,foo)
-unpacked-crosscrate: packed-crosscrate-split packed-crosscrate-single
+unpacked-crosscrate: unpacked-crosscrate-split unpacked-crosscrate-single
# - Debuginfo in `.dwo` files
# - (bar) `.rlib` file created, contains `.dwo`
--- /dev/null
+include ../../run-make-fulldeps/tools.mk
+
+all:
+ $(RUSTC) main.rs -o main.rs 2> $(TMPDIR)/file.stderr || echo "failed successfully"
+ $(RUSTC) main.rs -o . 2> $(TMPDIR)/folder.stderr || echo "failed successfully"
+
+ifdef RUSTC_BLESS_TEST
+ cp "$(TMPDIR)"/file.stderr file.stderr
+ cp "$(TMPDIR)"/folder.stderr folder.stderr
+else
+ $(DIFF) file.stderr "$(TMPDIR)"/file.stderr
+ $(DIFF) folder.stderr "$(TMPDIR)"/folder.stderr
+endif
--- /dev/null
+warning: ignoring --out-dir flag due to -o flag
+
+error: the input file "main.rs" would be overwritten by the generated executable
+
+error: aborting due to previous error; 1 warning emitted
+
--- /dev/null
+warning: ignoring --out-dir flag due to -o flag
+
+error: the generated executable for the input file "main.rs" conflicts with the existing directory "."
+
+error: aborting due to previous error; 1 warning emitted
+
--- /dev/null
+fn main() {}
--- /dev/null
+warning: ignoring --out-dir flag due to -o flag
+
+error: the input file "main.rs" would be overwritten by the generated executable
+
+error: aborting due to previous error; 1 warning emitted
+
size: (400, 600)
// Ignored for now https://github.com/rust-lang/rust/issues/93784.
// compare-elements-position-near-false: (
-// "#preferred-light-theme .setting-name",
-// "#preferred-light-theme .choice",
+// "#preferred-light-theme .setting-radio-name",
+// "#preferred-light-theme .setting-radio",
// {"y": 16},
// )
// We check that the "Use system theme" is disabled.
assert-property: ("#theme-system-preference", {"checked": "false"})
// Meaning that only the "theme" menu is showing up.
-assert: ".setting-line:not(.hidden) #theme"
-assert: ".setting-line.hidden #preferred-dark-theme"
-assert: ".setting-line.hidden #preferred-light-theme"
+assert: "#theme.setting-line:not(.hidden)"
+assert: "#preferred-dark-theme.setting-line.hidden"
+assert: "#preferred-light-theme.setting-line.hidden"
// We check that the correct theme is selected.
-assert-property: ("#theme .choices #theme-dark", {"checked": "true"})
+assert-property: ("#theme .setting-radio-choices #theme-dark", {"checked": "true"})
// Some style checks...
move-cursor-to: "#settings-menu > a"
"box-shadow": "rgb(33, 150, 243) 0px 0px 1px 1px",
},
)
-// Now we check the setting-name for radio buttons is on a different line than the label.
+// Now we check the setting-radio-name is on a different line than the label.
compare-elements-position-near: (
- "#theme .setting-name",
- "#theme .choices",
+ "#theme .setting-radio-name",
+ "#theme .setting-radio-choices",
{"x": 1}
)
compare-elements-position-near-false: (
- "#theme .setting-name",
- "#theme .choices",
+ "#theme .setting-radio-name",
+ "#theme .setting-radio-choices",
{"y": 1}
)
// Now we check that the label positions are all on the same line.
compare-elements-position-near: (
- "#theme .choices #theme-light",
- "#theme .choices #theme-dark",
+ "#theme .setting-radio-choices #theme-light",
+ "#theme .setting-radio-choices #theme-dark",
{"y": 1}
)
compare-elements-position-near: (
- "#theme .choices #theme-dark",
- "#theme .choices #theme-ayu",
+ "#theme .setting-radio-choices #theme-dark",
+ "#theme .setting-radio-choices #theme-ayu",
{"y": 1}
)
compare-elements-position-near: (
- "#theme .choices #theme-ayu",
- "#theme .choices #theme-system-preference",
+ "#theme .setting-radio-choices #theme-ayu",
+ "#theme .setting-radio-choices #theme-system-preference",
{"y": 1}
)
// We now switch the display.
click: "#theme-system-preference"
// Wait for the hidden element to show up.
-wait-for: ".setting-line:not(.hidden) #preferred-dark-theme"
-assert: ".setting-line:not(.hidden) #preferred-light-theme"
+wait-for: "#preferred-dark-theme.setting-line:not(.hidden)"
+assert: "#preferred-light-theme.setting-line:not(.hidden)"
// We check their text as well.
-assert-text: ("#preferred-dark-theme .setting-name", "Preferred dark theme")
-assert-text: ("#preferred-light-theme .setting-name", "Preferred light theme")
+assert-text: ("#preferred-dark-theme .setting-radio-name", "Preferred dark theme")
+assert-text: ("#preferred-light-theme .setting-radio-name", "Preferred light theme")
// We now check that clicking on the toggles' text is like clicking on the checkbox.
// To test it, we use the "Disable keyboard shortcuts".
local-storage: {"rustdoc-disable-shortcuts": "false"}
-click: ".setting-line:last-child .settings-toggle .label"
+click: ".setting-line:last-child .setting-check span"
assert-local-storage: {"rustdoc-disable-shortcuts": "true"}
// Make sure that "Disable keyboard shortcuts" actually took effect.
wait-for-css: ("#settings-menu .popover", {"display": "block"})
// Now turn keyboard shortcuts back on, and see if they work.
-click: ".setting-line:last-child .settings-toggle .label"
+click: ".setting-line:last-child .setting-check span"
assert-local-storage: {"rustdoc-disable-shortcuts": "false"}
press-key: "Escape"
press-key: "?"
assert-local-storage-false: { "rustdoc-use-system-theme": "true" }
click: "#theme-system-preference"
-wait-for: ".setting-line:not(.hidden) #preferred-light-theme"
+wait-for: "#preferred-light-theme.setting-line:not(.hidden)"
assert-local-storage: { "rustdoc-use-system-theme": "true" }
// We click on both preferred light and dark themes to be sure that there is a change.
click: "#preferred-light-theme-dark"
reload:
// Ensure that the "preferred themes" are still displayed.
-wait-for: ".setting-line:not(.hidden) #preferred-light-theme"
+wait-for: "#preferred-light-theme.setting-line:not(.hidden)"
click: "#theme-light"
wait-for-css: ("body", { "background-color": |background_light| })
assert-local-storage: { "rustdoc-theme": "light" }
// Ensure it's now hidden again
-wait-for: ".setting-line.hidden #preferred-light-theme"
+wait-for: "#preferred-light-theme.setting-line.hidden"
// And ensure the theme was rightly set.
wait-for-css: ("body", { "background-color": |background_light| })
assert-local-storage: { "rustdoc-theme": "light" }
reload:
wait-for: "#settings"
-assert: ".setting-line.hidden #preferred-light-theme"
+assert: "#preferred-light-theme.setting-line.hidden"
<div class="item-decl"><pre class="rust"><code>pub enum Cow<'a, B><span class="where fmt-newline">where<br />    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
- Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B),
+ Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>),
Whatever(<a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>),
}</code></pre></div>
\ No newline at end of file
<div class="item-decl"><pre class="rust"><code>pub enum Cow2<'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + 'a> {
- Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B),
+ Borrowed(<a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>),
Whatever(<a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>),
}</code></pre></div>
\ No newline at end of file
<div class="item-decl"><pre class="rust"><code>pub struct Struct<'a, B><span class="where fmt-newline">where<br />    B: <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + 'a,</span>{
- pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B,
+ pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>,
pub b: <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>,
}</code></pre></div>
\ No newline at end of file
<div class="item-decl"><pre class="rust"><code>pub struct Struct2<'a, B: ?<a class="trait" href="{{channel}}/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="trait.ToOwned.html" title="trait foo::ToOwned">ToOwned</a><dyn <a class="trait" href="{{channel}}/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>> + 'a> {
- pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a </a>B,
+ pub a: <a class="primitive" href="{{channel}}/std/primitive.reference.html">&'a B</a>,
pub b: <a class="primitive" href="{{channel}}/std/primitive.u32.html">u32</a>,
}</code></pre></div>
\ No newline at end of file
error[E0597]: `arena` does not live long enough
--> $DIR/dropck-tarena-cycle-checked.rs:116:7
|
+LL | let arena = TypedArena::default();
+ | ----- binding `arena` declared here
LL | f(&arena);
| ^^^^^^ borrowed value does not live long enough
LL | }
error[E0597]: `arena` does not live long enough
--> $DIR/dropck-tarena-unsound-drop.rs:41:7
|
+LL | let arena: TypedArena<C> = TypedArena::default();
+ | ----- binding `arena` declared here
LL | f(&arena);
| ^^^^^^ borrowed value does not live long enough
LL | }
--> $DIR/type-check-4.rs:14:9
|
LL | let p = &a;
- | -- borrow of `a` occurs here
+ | -- `a` is borrowed here
LL | asm!("{}", out(reg) a);
- | ^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `a` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^ `a` is assigned to here but it was already borrowed
LL |
LL | println!("{}", p);
| - borrow later used here
--> $DIR/type-check-4.rs:22:28
|
LL | let p = &mut a;
- | ------ borrow of `a` occurs here
+ | ------ `a` is borrowed here
LL | asm!("{}", in(reg) a);
| ^ use of borrowed `a`
LL |
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/associated-types-outlives.rs:22:14
|
+LL | F: for<'a> FnOnce(<T as Foo<'a>>::Bar)>(x: T, f: F) {
+ | - binding `x` declared here
+...
LL | 's: loop { y = denormalise(&x); break }
| -- borrow of `x` occurs here
LL | drop(x);
const C: Self::Ty = 0u8;
}
+pub trait Trait {
+ type Res = isize; //~ NOTE associated type defaults can't be assumed inside the trait defining them
+
+ fn infer_me_correctly() -> Self::Res {
+ //~^ NOTE expected `<Self as Trait>::Res` because of return type
+
+ // {integer} == isize
+ 2
+ //~^ ERROR mismatched types
+ //~| NOTE expected associated type, found integer
+ //~| NOTE expected associated type `<Self as Trait>::Res`
+ }
+}
+
fn main() {}
= note: expected associated type `<Self as AssocConst>::Ty`
found type `u8`
-error: aborting due to 2 previous errors
+error[E0308]: mismatched types
+ --> $DIR/defaults-in-other-trait-items.rs:54:9
+ |
+LL | type Res = isize;
+ | ----------------- associated type defaults can't be assumed inside the trait defining them
+LL |
+LL | fn infer_me_correctly() -> Self::Res {
+ | --------- expected `<Self as Trait>::Res` because of return type
+...
+LL | 2
+ | ^ expected associated type, found integer
+ |
+ = note: expected associated type `<Self as Trait>::Res`
+ found type `{integer}`
+
+error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0308`.
error[E0308]: mismatched types
--> $DIR/issue-26681.rs:17:39
|
+LL | type Fv: Foo = u8;
+ | ------------------ associated type defaults can't be assumed inside the trait defining them
LL | const C: <Self::Fv as Foo>::Bar = 6665;
| ^^^^ expected associated type, found integer
|
= note: expected associated type `<<Self as Baz>::Fv as Foo>::Bar`
found type `{integer}`
- = help: consider constraining the associated type `<<Self as Baz>::Fv as Foo>::Bar` to `{integer}`
- = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html
error: aborting due to previous error
| ^^^^^^^^ future created by async block is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: future is not `Send` as it awaits another future which is not `Send`
--> $DIR/issue-68112.rs:34:17
|
| ^^^^^^^^ future created by async block is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: future is not `Send` as it awaits another future which is not `Send`
--> $DIR/issue-68112.rs:43:17
|
| required by a bound introduced by this call
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Arc<RefCell<i32>>` to implement `Send`
note: required because it's used within this `async fn` body
--> $DIR/issue-68112.rs:50:31
| ^^^^^^^^ future created by async block is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: future is not `Send` as it awaits another future which is not `Send`
--> $DIR/issue-68112.rs:34:17
|
| ^^^^^^^^ future created by async block is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: future is not `Send` as it awaits another future which is not `Send`
--> $DIR/issue-68112.rs:43:17
|
| required by a bound introduced by this call
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Arc<RefCell<i32>>` to implement `Send`
note: required because it's used within this `async fn` body
--> $DIR/issue-68112.rs:50:31
LL | pub async fn async_fn(x: &mut i32) -> &i32 {
| - let's call the lifetime of this reference `'1`
LL | let y = &*x;
- | --- borrow of `*x` occurs here
+ | --- `*x` is borrowed here
LL | *x += 1;
- | ^^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL | y
| - returning this value requires that `*x` is borrowed for `'1`
--> $DIR/issue-74072-lifetime-name-annotations.rs:16:9
|
LL | let y = &*x;
- | --- borrow of `*x` occurs here
+ | --- `*x` is borrowed here
LL | *x += 1;
- | ^^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL | y
| - returning this value requires that `*x` is borrowed for `'1`
LL | })()
LL | (async move || -> &i32 {
| - let's call the lifetime of this reference `'1`
LL | let y = &*x;
- | --- borrow of `*x` occurs here
+ | --- `*x` is borrowed here
LL | *x += 1;
- | ^^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL | y
| - returning this value requires that `*x` is borrowed for `'1`
--> $DIR/issue-74072-lifetime-name-annotations.rs:32:9
|
LL | let y = &*x;
- | --- borrow of `*x` occurs here
+ | --- `*x` is borrowed here
LL | *x += 1;
- | ^^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL | y
| - returning this value requires that `*x` is borrowed for `'1`
LL | }
LL | pub async fn async_fn(x: &mut i32) -> (&i32, &i32) {
| - let's call the lifetime of this reference `'1`
LL | let y = &*x;
- | --- borrow of `*x` occurs here
+ | --- `*x` is borrowed here
LL | *x += 1;
- | ^^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^^ `*x` is assigned to here but it was already borrowed
LL | (&32, y)
| -------- returning this value requires that `*x` is borrowed for `'1`
--> $DIR/ret-ref.rs:16:5
|
LL | let future = multiple_named_lifetimes(&a, &b);
- | -- borrow of `a` occurs here
+ | -- `a` is borrowed here
LL | a += 1;
- | ^^^^^^ assignment to borrowed `a` occurs here
+ | ^^^^^^ `a` is assigned to here but it was already borrowed
LL | b += 1;
LL | let p = future.await;
| ------ borrow later used here
--> $DIR/ret-ref.rs:17:5
|
LL | let future = multiple_named_lifetimes(&a, &b);
- | -- borrow of `b` occurs here
+ | -- `b` is borrowed here
LL | a += 1;
LL | b += 1;
- | ^^^^^^ assignment to borrowed `b` occurs here
+ | ^^^^^^ `b` is assigned to here but it was already borrowed
LL | let p = future.await;
| ------ borrow later used here
--> $DIR/ret-ref.rs:28:5
|
LL | let future = multiple_named_lifetimes(&a, &b);
- | -- borrow of `a` occurs here
+ | -- `a` is borrowed here
LL | let p = future.await;
LL | a += 1;
- | ^^^^^^ assignment to borrowed `a` occurs here
+ | ^^^^^^ `a` is assigned to here but it was already borrowed
LL | b += 1;
LL | drop(p);
| - borrow later used here
|
= note: this error originates in the macro `bug` (in Nightly builds, run with -Z macro-backtrace for more info)
-error: unexpected expression: `{
- let res =
- ::alloc::fmt::format(::core::fmt::Arguments::new_v1(&[""],
- &[::core::fmt::ArgumentV1::new_display(&"u8")]));
- res
- }.as_str()`
+error: unexpected expression: `{ let res = ::alloc::fmt::format(format_args!("{0}", "u8")); res }.as_str()`
--> $DIR/key-value-expansion.rs:48:23
|
LL | doc_comment! {format!("{coor}", coor = stringify!($t1)).as_str()}
}
fn main() {
- let mut x = Int(1);
+ let mut x = Int(1); //~ NOTE binding `x` declared here
x
//~^ NOTE borrow of `x` occurs here
+=
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/augmented-assignments.rs:16:5
|
+LL | let mut x = Int(1);
+ | ----- binding `x` declared here
LL | x
| - borrow of `x` occurs here
...
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/binop-move-semantics.rs:21:5
|
+LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
+ | - binding `x` declared here
LL | let m = &x;
| -- borrow of `x` occurs here
...
error[E0505]: cannot move out of `y` because it is borrowed
--> $DIR/binop-move-semantics.rs:23:5
|
+LL | fn move_borrowed<T: Add<Output=()>>(x: T, mut y: T) {
+ | ----- binding `y` declared here
+LL | let m = &x;
LL | let n = &mut y;
| ------ borrow of `y` occurs here
...
LL | ref foo @ [.., ref mut bar] => (),
| -------^^^^^^^^-----------^
| | |
- | | mutable borrow, by `bar`, occurs here
- | immutable borrow, by `foo`, occurs here
+ | | value is mutably borrowed by `bar` here
+ | value is borrowed by `foo` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:120:9
LL | ref foo @ Some(box ref mut s) => (),
| -------^^^^^^^^^^^^---------^
| | |
- | | mutable borrow, by `s`, occurs here
- | immutable borrow, by `foo`, occurs here
+ | | value is mutably borrowed by `s` here
+ | value is borrowed by `foo` here
error[E0382]: borrow of moved value: `x`
--> $DIR/bindings-after-at-or-patterns-slice-patterns-box-patterns.rs:18:5
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/borrow-tuple-fields.rs:12:13
|
+LL | let x: (Box<_>, _) = (Box::new(1), 2);
+ | - binding `x` declared here
LL | let r = &x.0;
| ---- borrow of `x.0` occurs here
LL | let y = x;
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/borrow-tuple-fields.rs:28:13
|
+LL | let x = Foo(Box::new(1), 2);
+ | - binding `x` declared here
LL | let r = &x.0;
| ---- borrow of `x.0` occurs here
LL | let y = x;
--> $DIR/borrowck-anon-fields-variant.rs:16:19
|
LL | Foo::Y(ref mut a, _) => a,
- | --------- borrow of `y.0` occurs here
+ | --------- `y.0` is borrowed here
...
LL | let b = match y {
| ^ use of borrowed `y.0`
--> $DIR/borrowck-anon-fields-variant.rs:34:19
|
LL | Foo::Y(ref mut a, _) => a,
- | --------- borrow of `y.0` occurs here
+ | --------- `y.0` is borrowed here
...
LL | let b = match y {
| ^ use of borrowed `y.0`
--> $DIR/borrowck-assign-comp.rs:10:5
|
LL | let q = &p;
- | -- borrow of `p.x` occurs here
+ | -- `p.x` is borrowed here
...
LL | p.x = 5;
- | ^^^^^^^ assignment to borrowed `p.x` occurs here
+ | ^^^^^^^ `p.x` is assigned to here but it was already borrowed
LL | q.x;
| --- borrow later used here
--> $DIR/borrowck-assign-comp.rs:20:5
|
LL | let q = &p.y;
- | ---- borrow of `p` occurs here
+ | ---- `p` is borrowed here
LL | p = Point {x: 5, y: 7};
- | ^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `p` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^ `p` is assigned to here but it was already borrowed
LL | p.x; // silence warning
LL | *q; // stretch loan
| -- borrow later used here
--> $DIR/borrowck-assign-comp.rs:31:5
|
LL | let q = &p.y;
- | ---- borrow of `p.y` occurs here
+ | ---- `p.y` is borrowed here
LL | p.y = 5;
- | ^^^^^^^ assignment to borrowed `p.y` occurs here
+ | ^^^^^^^ `p.y` is assigned to here but it was already borrowed
LL | *q;
| -- borrow later used here
--> $DIR/borrowck-assign-to-andmut-in-borrowed-loc.rs:18:9
|
LL | let z = copy_borrowed_ptr(&mut y);
- | ------ borrow of `y` occurs here
+ | ------ `y` is borrowed here
LL | *y.pointer += 1;
| ^^^^^^^^^^^^^^^ use of borrowed `y`
...
--> $DIR/borrowck-assign-to-andmut-in-borrowed-loc.rs:18:9
|
LL | let z = copy_borrowed_ptr(&mut y);
- | ------ borrow of `*y.pointer` occurs here
+ | ------ `*y.pointer` is borrowed here
LL | *y.pointer += 1;
- | ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here
+ | ^^^^^^^^^^^^^^^ `*y.pointer` is assigned to here but it was already borrowed
...
LL | *z.pointer += 1;
| --------------- borrow later used here
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/borrowck-bad-nested-calls-move.rs:25:9
|
+LL | let mut a: Box<_> = Box::new(1);
+ | ----- binding `a` declared here
+...
LL | add(
| --- borrow later used by call
LL | &*a,
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/borrowck-bad-nested-calls-move.rs:32:9
|
+LL | let mut a: Box<_> = Box::new(1);
+ | ----- binding `a` declared here
LL | add(
| --- borrow later used by call
LL | &*a,
LL | let c2 = || x * 5;
| -- - borrow occurs due to use in closure
| |
- | borrow of `x` occurs here
+ | `x` is borrowed here
LL | x = 5;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL |
LL | drop(c2);
| -- borrow later used here
LL | let c1 = || get(&x);
| -- - borrow occurs due to use in closure
| |
- | borrow of `x` occurs here
+ | `x` is borrowed here
LL | x = 5;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL |
LL | drop(c1);
| -- borrow later used here
LL | let c1 = || get(&*x);
| -- -- borrow occurs due to use in closure
| |
- | borrow of `*x` occurs here
+ | `*x` is borrowed here
LL | *x = 5;
- | ^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^ `*x` is assigned to here but it was already borrowed
LL |
LL | drop(c1);
| -- borrow later used here
LL | let c1 = || get(&*x.f);
| -- ---- borrow occurs due to use in closure
| |
- | borrow of `*x.f` occurs here
+ | `*x.f` is borrowed here
LL | *x.f = 5;
- | ^^^^^^^^ assignment to borrowed `*x.f` occurs here
+ | ^^^^^^^^ `*x.f` is assigned to here but it was already borrowed
LL |
LL | drop(c1);
| -- borrow later used here
--> $DIR/borrowck-describe-lvalue.rs:37:9
|
LL | let x = f.x();
- | ----- borrow of `f` occurs here
+ | ----- `f` is borrowed here
LL | f.x;
| ^^^ use of borrowed `f`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:44:9
|
LL | let x = g.x();
- | ----- borrow of `g` occurs here
+ | ----- `g` is borrowed here
LL | g.0;
| ^^^ use of borrowed `g`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:51:9
|
LL | let x = &mut h.0;
- | -------- borrow of `h.0` occurs here
+ | -------- `h.0` is borrowed here
LL | h.0;
| ^^^ use of borrowed `h.0`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:59:20
|
LL | let x = e.x();
- | ----- borrow of `e` occurs here
+ | ----- `e` is borrowed here
LL | match e {
LL | Baz::X(value) => value
| ^^^^^ use of borrowed `e`
--> $DIR/borrowck-describe-lvalue.rs:67:9
|
LL | let x = &mut u.a;
- | -------- borrow of `u.a` occurs here
+ | -------- `u.a` is borrowed here
LL | u.a;
| ^^^ use of borrowed `u.a`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:74:9
|
LL | let x = f.x();
- | ----- borrow of `*f` occurs here
+ | ----- `*f` is borrowed here
LL | f.x;
| ^^^ use of borrowed `*f`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:81:9
|
LL | let x = g.x();
- | ----- borrow of `*g` occurs here
+ | ----- `*g` is borrowed here
LL | g.0;
| ^^^ use of borrowed `*g`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:88:9
|
LL | let x = &mut h.0;
- | -------- borrow of `h.0` occurs here
+ | -------- `h.0` is borrowed here
LL | h.0;
| ^^^ use of borrowed `h.0`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:96:20
|
LL | let x = e.x();
- | ----- borrow of `*e` occurs here
+ | ----- `*e` is borrowed here
LL | match *e {
LL | Baz::X(value) => value
| ^^^^^ use of borrowed `*e`
--> $DIR/borrowck-describe-lvalue.rs:105:9
|
LL | let x = &mut u.a;
- | -------- borrow of `u.a` occurs here
+ | -------- `u.a` is borrowed here
LL | u.a;
| ^^^ use of borrowed `u.a`
LL | drop(x);
--> $DIR/borrowck-describe-lvalue.rs:113:15
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
LL | match v {
LL | &[x, _, .., _, _] => println!("{}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:118:18
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
...
LL | &[_, x, .., _, _] => println!("{}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:123:25
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
...
LL | &[_, _, .., x, _] => println!("{}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:128:28
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
...
LL | &[_, _, .., _, x] => println!("{}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:139:15
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
LL | match v {
LL | &[x @ ..] => println!("{:?}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:144:18
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
...
LL | &[_, x @ ..] => println!("{:?}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:149:15
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
...
LL | &[x @ .., _] => println!("{:?}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:154:18
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
...
LL | &[_, x @ .., _] => println!("{:?}", x),
| ^ use of borrowed `v`
--> $DIR/borrowck-describe-lvalue.rs:166:15
|
LL | let x = &mut e;
- | ------ borrow of `e` occurs here
+ | ------ `e` is borrowed here
LL | match e {
| ^ use of borrowed `e`
...
--> $DIR/borrowck-describe-lvalue.rs:232:9
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
LL | v[0].y;
| ^^^^ use of borrowed `v`
...
--> $DIR/borrowck-describe-lvalue.rs:232:9
|
LL | let x = &mut v;
- | ------ borrow of `v` occurs here
+ | ------ `v` is borrowed here
LL | v[0].y;
| ^^^^^^ use of borrowed `v`
...
error[E0505]: cannot move out of `x.b` because it is borrowed
--> $DIR/borrowck-field-sensitivity.rs:34:10
|
+LL | let x = A { a: 1, b: Box::new(2) };
+ | - binding `x` declared here
LL | let p = &x.b;
| ---- borrow of `x.b` occurs here
LL | drop(x.b);
error[E0505]: cannot move out of `x.b` because it is borrowed
--> $DIR/borrowck-field-sensitivity.rs:41:14
|
+LL | let x = A { a: 1, b: Box::new(2) };
+ | - binding `x` declared here
LL | let p = &x.b;
| ---- borrow of `x.b` occurs here
LL | let _y = A { a: 3, .. x };
--> $DIR/borrowck-imm-ref-to-mut-rec-field-issue-3162-c.rs:6:9
|
LL | let b = &mut _a;
- | ------- borrow of `_a` occurs here
+ | ------- `_a` is borrowed here
...
LL | _a = 4;
- | ^^^^^^ assignment to borrowed `_a` occurs here
+ | ^^^^^^ `_a` is assigned to here but it was already borrowed
...
LL | drop(b);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:25:5
|
LL | let p = &y;
- | -- borrow of `**y` occurs here
+ | -- `**y` is borrowed here
LL | let q = &***p;
LL | **y = 2;
- | ^^^^^^^ assignment to borrowed `**y` occurs here
+ | ^^^^^^^ `**y` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:35:5
|
LL | let p = &y;
- | -- borrow of `**y` occurs here
+ | -- `**y` is borrowed here
LL | let q = &***p;
LL | **y = 2;
- | ^^^^^^^ assignment to borrowed `**y` occurs here
+ | ^^^^^^^ `**y` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:45:5
|
LL | let p = &y;
- | -- borrow of `**y` occurs here
+ | -- `**y` is borrowed here
LL | let q = &***p;
LL | **y = 2;
- | ^^^^^^^ assignment to borrowed `**y` occurs here
+ | ^^^^^^^ `**y` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:55:5
|
LL | let p = &y;
- | -- borrow of `**y` occurs here
+ | -- `**y` is borrowed here
LL | let q = &***p;
LL | **y = 2;
- | ^^^^^^^ assignment to borrowed `**y` occurs here
+ | ^^^^^^^ `**y` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:65:5
|
LL | let p = &y.a;
- | ---- borrow of `**y.a` occurs here
+ | ---- `**y.a` is borrowed here
LL | let q = &***p;
LL | **y.a = 2;
- | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here
+ | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:75:5
|
LL | let p = &y.a;
- | ---- borrow of `**y.a` occurs here
+ | ---- `**y.a` is borrowed here
LL | let q = &***p;
LL | **y.a = 2;
- | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here
+ | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:85:5
|
LL | let p = &y.a;
- | ---- borrow of `**y.a` occurs here
+ | ---- `**y.a` is borrowed here
LL | let q = &***p;
LL | **y.a = 2;
- | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here
+ | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-issue-14498.rs:95:5
|
LL | let p = &y.a;
- | ---- borrow of `**y.a` occurs here
+ | ---- `**y.a` is borrowed here
LL | let q = &***p;
LL | **y.a = 2;
- | ^^^^^^^^^ assignment to borrowed `**y.a` occurs here
+ | ^^^^^^^^^ `**y.a` is assigned to here but it was already borrowed
LL | drop(p);
| - borrow later used here
--> $DIR/borrowck-lend-flow-match.rs:12:13
|
LL | Some(ref r) => {
- | ----- borrow of `x` occurs here
+ | ----- `x` is borrowed here
LL | x = Some(1);
- | ^^^^^^^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^^^^^^^ `x` is assigned to here but it was already borrowed
LL | drop(r);
| - borrow later used here
error[E0505]: cannot move out of `v` because it is borrowed
--> $DIR/borrowck-loan-blocks-move-cc.rs:14:19
|
+LL | let v: Box<_> = Box::new(3);
+ | - binding `v` declared here
LL | let w = &v;
| -- borrow of `v` occurs here
LL | thread::spawn(move|| {
error[E0505]: cannot move out of `v` because it is borrowed
--> $DIR/borrowck-loan-blocks-move-cc.rs:24:19
|
+LL | let v: Box<_> = Box::new(3);
+ | - binding `v` declared here
LL | let w = &v;
| -- borrow of `v` occurs here
LL | thread::spawn(move|| {
error[E0505]: cannot move out of `v` because it is borrowed
--> $DIR/borrowck-loan-blocks-move.rs:11:10
|
+LL | let v = Box::new(3);
+ | - binding `v` declared here
LL | let w = &v;
| -- borrow of `v` occurs here
LL | take(v);
--> $DIR/borrowck-loan-of-static-data-issue-27616.rs:16:5
|
LL | let alias: &'static mut String = s;
- | ------------------- - borrow of `*s` occurs here
+ | ------------------- - `*s` is borrowed here
| |
| type annotation requires that `*s` is borrowed for `'static`
...
LL | *s = String::new();
- | ^^ assignment to borrowed `*s` occurs here
+ | ^^ `*s` is assigned to here but it was already borrowed
error: aborting due to previous error
--> $DIR/borrowck-loan-rcvr-overloaded-op.rs:38:5
|
LL | let q = &mut p;
- | ------ borrow of `p` occurs here
+ | ------ `p` is borrowed here
LL |
LL | p + 3;
| ^ use of borrowed `p`
error[E0597]: `z.1` does not live long enough
--> $DIR/borrowck-local-borrow-with-panic-outlives-fn.rs:3:15
|
+LL | let mut z = (0, 0);
+ | ----- binding `z` declared here
LL | *x = Some(&mut z.1);
| ----------^^^^^^^^-
| | |
--> $DIR/borrowck-match-already-borrowed.rs:9:19
|
LL | let p = &mut foo;
- | -------- borrow of `foo` occurs here
+ | -------- `foo` is borrowed here
LL | let _ = match foo {
| ^^^ use of borrowed `foo`
...
--> $DIR/borrowck-match-already-borrowed.rs:12:16
|
LL | let p = &mut foo;
- | -------- borrow of `foo` occurs here
+ | -------- `foo` is borrowed here
...
LL | Foo::A(x) => x
| ^ use of borrowed `foo`
--> $DIR/borrowck-match-already-borrowed.rs:22:9
|
LL | let r = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | let _ = match x {
LL | x => x + 1,
| ^ use of borrowed `x`
--> $DIR/borrowck-match-already-borrowed.rs:23:9
|
LL | let r = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
...
LL | y => y + 2,
| ^ use of borrowed `x`
| | |
| | variable moved due to use in closure
| | move occurs because `bar` has type `Box<isize>`, which does not implement the `Copy` trait
- | move out of `bar` occurs here
+ | `bar` is moved here
error: aborting due to previous error
error[E0505]: cannot move out of `*a` because it is borrowed
--> $DIR/borrowck-move-from-subpath-of-borrowed-path.rs:12:13
|
+LL | let a: Box<Box<_>> = Box::new(Box::new(2));
+ | - binding `a` declared here
LL | let b = &a;
| -- borrow of `a` occurs here
LL |
error[E0505]: cannot move out of `t0` because it is borrowed
--> $DIR/borrowck-move-mut-base-ptr.rs:10:14
|
+LL | fn foo(t0: &mut isize) {
+ | -- binding `t0` declared here
LL | let p: &isize = &*t0; // Freezes `*t0`
| ---- borrow of `*t0` occurs here
LL | let t1 = t0;
error[E0505]: cannot move out of `a.x` because it is borrowed
--> $DIR/borrowck-move-subcomponent.rs:15:14
|
+LL | let a : S = S { x : Box::new(1) };
+ | - binding `a` declared here
LL | let pb = &a;
| -- borrow of `a` occurs here
LL | let S { x: ax } = a;
error[E0505]: cannot move out of `x1` because it is borrowed
--> $DIR/borrowck-multiple-captures.rs:12:19
|
+LL | let x1: Box<_> = Box::new(1);
+ | -- binding `x1` declared here
LL | let p1 = &x1;
| --- borrow of `x1` occurs here
...
error[E0505]: cannot move out of `x2` because it is borrowed
--> $DIR/borrowck-multiple-captures.rs:12:19
|
+LL | let x2: Box<_> = Box::new(2);
+ | -- binding `x2` declared here
LL | let p2 = &x2;
| --- borrow of `x2` occurs here
LL | thread::spawn(move|| {
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/borrowck-multiple-captures.rs:38:19
|
+LL | let x: Box<_> = Box::new(1);
+ | - binding `x` declared here
LL | let p = &x;
| -- borrow of `x` occurs here
LL | thread::spawn(move|| {
--> $DIR/borrowck-overloaded-index-and-overloaded-deref.rs:31:5
|
LL | let i = &v[0].f;
- | - borrow of `v` occurs here
+ | - `v` is borrowed here
LL | v = MyVec { x: MyPtr { x: Foo { f: 23 } } };
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `v` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `v` is assigned to here but it was already borrowed
LL |
LL | read(*i);
| -- borrow later used here
--> $DIR/borrowck-overloaded-index-autoderef.rs:71:5
|
LL | let p = &f.foo[&s];
- | ----- borrow of `f.foo` occurs here
+ | ----- `f.foo` is borrowed here
LL | f.foo = g;
- | ^^^^^^^^^ assignment to borrowed `f.foo` occurs here
+ | ^^^^^^^^^ `f.foo` is assigned to here but it was already borrowed
LL | p.use_ref();
| ----------- borrow later used here
--> $DIR/borrowck-overloaded-index-autoderef.rs:77:5
|
LL | let p = &f.foo[&s];
- | ----- borrow of `*f` occurs here
+ | ----- `*f` is borrowed here
LL | *f = g;
- | ^^^^^^ assignment to borrowed `*f` occurs here
+ | ^^^^^^ `*f` is assigned to here but it was already borrowed
LL | p.use_ref();
| ----------- borrow later used here
--> $DIR/borrowck-overloaded-index-autoderef.rs:83:5
|
LL | let p = &mut f.foo[&s];
- | ----- borrow of `f.foo` occurs here
+ | ----- `f.foo` is borrowed here
LL | f.foo = g;
- | ^^^^^^^^^ assignment to borrowed `f.foo` occurs here
+ | ^^^^^^^^^ `f.foo` is assigned to here but it was already borrowed
LL | p.use_mut();
| ----------- borrow later used here
--> $DIR/borrowck-overloaded-index-autoderef.rs:89:5
|
LL | let p = &mut f.foo[&s];
- | ----- borrow of `*f` occurs here
+ | ----- `*f` is borrowed here
LL | *f = g;
- | ^^^^^^ assignment to borrowed `*f` occurs here
+ | ^^^^^^ `*f` is assigned to here but it was already borrowed
LL | p.use_mut();
| ----------- borrow later used here
error[E0505]: cannot move out of `s` because it is borrowed
--> $DIR/borrowck-overloaded-index-move-index.rs:50:22
|
+LL | let mut s = "hello".to_string();
+ | ----- binding `s` declared here
LL | let rs = &mut s;
| ------ borrow of `s` occurs here
LL |
error[E0505]: cannot move out of `s` because it is borrowed
--> $DIR/borrowck-overloaded-index-move-index.rs:53:7
|
+LL | let mut s = "hello".to_string();
+ | ----- binding `s` declared here
LL | let rs = &mut s;
| ------ borrow of `s` occurs here
...
--> $DIR/borrowck-pat-reassign-binding.rs:10:11
|
LL | Some(ref i) => {
- | ----- borrow of `x` occurs here
+ | ----- `x` is borrowed here
LL | // But on this branch, `i` is an outstanding borrow
LL | x = Some(*i+1);
- | ^^^^^^^^^^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^^^^^^^^^^ `x` is assigned to here but it was already borrowed
LL | drop(i);
| - borrow later used here
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/borrowck-unary-move.rs:3:10
|
+LL | fn foo(x: Box<isize>) -> isize {
+ | - binding `x` declared here
LL | let y = &*x;
| --- borrow of `*x` occurs here
LL | free(x);
--> $DIR/borrowck-union-borrow-nested.rs:24:21
|
LL | let ra = &mut u.s.a;
- | ---------- borrow of `u.s.a` occurs here
+ | ---------- `u.s.a` is borrowed here
LL | let b = u.c;
| ^^^ use of borrowed `u.s.a`
LL | ra.use_mut();
--> $DIR/borrowck-union-borrow.rs:28:13
|
LL | let ra = &u.a;
- | ---- borrow of `u.a` occurs here
+ | ---- `u.a` is borrowed here
LL | u.a = 1;
- | ^^^^^^^ assignment to borrowed `u.a` occurs here
+ | ^^^^^^^ `u.a` is assigned to here but it was already borrowed
LL | drop(ra);
| -- borrow later used here
--> $DIR/borrowck-union-borrow.rs:49:13
|
LL | let ra = &u.a;
- | ---- borrow of `u.b` occurs here
+ | ---- `u.b` is borrowed here
LL | u.b = 1;
- | ^^^^^^^ assignment to borrowed `u.b` occurs here
+ | ^^^^^^^ `u.b` is assigned to here but it was already borrowed
LL | drop(ra);
| -- borrow later used here
--> $DIR/borrowck-union-borrow.rs:60:21
|
LL | let ra = &mut u.a;
- | -------- borrow of `u.a` occurs here
+ | -------- `u.a` is borrowed here
LL | let a = u.a;
| ^^^ use of borrowed `u.a`
LL | drop(ra);
--> $DIR/borrowck-union-borrow.rs:70:13
|
LL | let rma = &mut u.a;
- | -------- borrow of `u.a` occurs here
+ | -------- `u.a` is borrowed here
LL | u.a = 1;
- | ^^^^^^^ assignment to borrowed `u.a` occurs here
+ | ^^^^^^^ `u.a` is assigned to here but it was already borrowed
LL | drop(rma);
| --- borrow later used here
--> $DIR/borrowck-union-borrow.rs:81:21
|
LL | let ra = &mut u.a;
- | -------- borrow of `u.a` occurs here
+ | -------- `u.a` is borrowed here
LL | let b = u.b;
| ^^^ use of borrowed `u.a`
LL |
--> $DIR/borrowck-union-borrow.rs:92:13
|
LL | let rma = &mut u.a;
- | -------- borrow of `u.b` occurs here
+ | -------- `u.b` is borrowed here
LL | u.b = 1;
- | ^^^^^^^ assignment to borrowed `u.b` occurs here
+ | ^^^^^^^ `u.b` is assigned to here but it was already borrowed
LL | drop(rma);
| --- borrow later used here
--> $DIR/borrowck-use-mut-borrow.rs:11:10
|
LL | let p = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | drop(x);
| ^ use of borrowed `x`
LL | *p = 2;
--> $DIR/borrowck-use-mut-borrow.rs:18:10
|
LL | let p = &mut x.a;
- | -------- borrow of `x.a` occurs here
+ | -------- `x.a` is borrowed here
LL | drop(x);
| ^ use of borrowed `x.a`
LL | *p = 3;
--> $DIR/borrowck-use-mut-borrow.rs:25:10
|
LL | let p = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | drop(x.a);
| ^^^ use of borrowed `x`
LL | p.a = 3;
--> $DIR/borrowck-use-mut-borrow.rs:32:10
|
LL | let p = &mut x.a;
- | -------- borrow of `x.a` occurs here
+ | -------- `x.a` is borrowed here
LL | drop(x.a);
| ^^^ use of borrowed `x.a`
LL | *p = 3;
--> $DIR/borrowck-use-mut-borrow.rs:39:13
|
LL | let p = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | let y = A { b: 3, .. x };
| ^^^^^^^^^^^^^^^^ use of borrowed `x`
LL | drop(y);
--> $DIR/borrowck-use-mut-borrow.rs:47:13
|
LL | let p = &mut x.a;
- | -------- borrow of `x.a` occurs here
+ | -------- `x.a` is borrowed here
LL | let y = A { b: 3, .. x };
| ^^^^^^^^^^^^^^^^ use of borrowed `x.a`
LL | drop(y);
--> $DIR/borrowck-use-mut-borrow.rs:55:10
|
LL | let p = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | drop(*x);
| ^^ use of borrowed `x`
LL | **p = 2;
--> $DIR/borrowck-use-mut-borrow.rs:62:10
|
LL | let p = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | drop(*x.b);
| ^^^^ use of borrowed `x`
LL | p.a = 3;
--> $DIR/borrowck-use-mut-borrow.rs:69:10
|
LL | let p = &mut x.b;
- | -------- borrow of `x.b` occurs here
+ | -------- `x.b` is borrowed here
LL | drop(*x.b);
| ^^^^ use of borrowed `x.b`
LL | **p = 3;
--> $DIR/borrowck-vec-pattern-move-tail.rs:8:5
|
LL | [1, 2, ref tail @ ..] => tail,
- | -------- borrow of `a[_]` occurs here
+ | -------- `a[_]` is borrowed here
...
LL | a[2] = 0;
- | ^^^^^^^^ assignment to borrowed `a[_]` occurs here
+ | ^^^^^^^^ `a[_]` is assigned to here but it was already borrowed
LL | println!("t[0]: {}", t[0]);
| ---- borrow later used here
let mut vec = [Box::new(1), Box::new(2), Box::new(3)];
match vec {
[box ref _a, _, _] => {
- //~^ NOTE borrow of `vec[_]` occurs here
+ //~^ NOTE `vec[_]` is borrowed here
vec[0] = Box::new(4); //~ ERROR cannot assign
- //~^ NOTE assignment to borrowed `vec[_]` occurs here
+ //~^ NOTE `vec[_]` is assigned to here
_a.use_ref();
//~^ NOTE borrow later used here
}
let vec: &mut [Box<isize>] = &mut vec;
match vec {
&mut [ref _b @ ..] => {
- //~^ borrow of `vec[_]` occurs here
+ //~^ `vec[_]` is borrowed here
vec[0] = Box::new(4); //~ ERROR cannot assign
- //~^ NOTE assignment to borrowed `vec[_]` occurs here
+ //~^ NOTE `vec[_]` is assigned to here
_b.use_ref();
//~^ NOTE borrow later used here
}
--> $DIR/borrowck-vec-pattern-nesting.rs:9:13
|
LL | [box ref _a, _, _] => {
- | ------ borrow of `vec[_]` occurs here
+ | ------ `vec[_]` is borrowed here
LL |
LL | vec[0] = Box::new(4);
- | ^^^^^^ assignment to borrowed `vec[_]` occurs here
+ | ^^^^^^ `vec[_]` is assigned to here but it was already borrowed
LL |
LL | _a.use_ref();
| ------------ borrow later used here
--> $DIR/borrowck-vec-pattern-nesting.rs:23:13
|
LL | &mut [ref _b @ ..] => {
- | ------ borrow of `vec[_]` occurs here
+ | ------ `vec[_]` is borrowed here
LL |
LL | vec[0] = Box::new(4);
- | ^^^^^^ assignment to borrowed `vec[_]` occurs here
+ | ^^^^^^ `vec[_]` is assigned to here but it was already borrowed
LL |
LL | _b.use_ref();
| ------------ borrow later used here
| ^^^^^^^^^^^ use of borrowed `*self`
...
LL | let r = &mut *self;
- | ---------- borrow of `*self` occurs here
+ | ---------- `*self` is borrowed here
LL | r.get_size(width!(self))
| -------- ------------ in this macro invocation
| |
--> $DIR/issue-52713-bug.rs:12:5
|
LL | let y = &x;
- | -- borrow of `x` occurs here
+ | -- `x` is borrowed here
...
LL | x += 1;
- | ^^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^^ `x` is assigned to here but it was already borrowed
LL | println!("{}", y);
| - borrow later used here
LL | let res = (|| (|| &greeting)())();
| -- -------- borrow occurs due to use in closure
| |
- | borrow of `greeting` occurs here
+ | `greeting` is borrowed here
LL |
LL | greeting = "DEALLOCATED".to_string();
- | ^^^^^^^^ assignment to borrowed `greeting` occurs here
+ | ^^^^^^^^ `greeting` is assigned to here but it was already borrowed
...
LL | println!("thread result: {:?}", res);
| --- borrow later used here
--> $DIR/issue-81365-1.rs:21:9
|
LL | let first = &self.target_field;
- | ---- borrow of `self.container_field` occurs here
+ | ---- `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-10.rs:21:9
|
LL | let first = &self.deref().target_field;
- | ------------ borrow of `self.container_field` occurs here
+ | ------------ `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
--> $DIR/issue-81365-11.rs:27:9
|
LL | let first = &mut self.target_field;
- | ---- borrow of `self.container_field` occurs here
+ | ---- `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
--> $DIR/issue-81365-2.rs:25:9
|
LL | let first = &self.container.target_field;
- | -------------- borrow of `self.container.container_field` occurs here
+ | -------------- `self.container.container_field` is borrowed here
LL | self.container.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-3.rs:32:9
|
LL | let first = &self.target_field;
- | ---- borrow of `self.container.container_field` occurs here
+ | ---- `self.container.container_field` is borrowed here
LL | self.container.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-4.rs:33:9
|
LL | let first = &self.target_field;
- | ---- borrow of `self.outer_field` occurs here
+ | ---- `self.outer_field` is borrowed here
LL | self.outer_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.outer_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^ `self.outer_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-5.rs:28:9
|
LL | let first = self.get();
- | ---------- borrow of `self.container_field` occurs here
+ | ---------- `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-6.rs:18:9
|
LL | let first = &self[0];
- | ---- borrow of `self.container_field` occurs here
+ | ---- `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-7.rs:20:5
|
LL | let first = &c.target_field;
- | - borrow of `c.container_field` occurs here
+ | - `c.container_field` is borrowed here
LL | c.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `c.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^ `c.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-8.rs:21:9
|
LL | let first = &(*self).target_field;
- | ------- borrow of `self.container_field` occurs here
+ | ------- `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
|
--> $DIR/issue-81365-9.rs:21:9
|
LL | let first = &Deref::deref(self).target_field;
- | ---- borrow of `self.container_field` occurs here
+ | ---- `self.container_field` is borrowed here
LL | self.container_field = true;
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `self.container_field` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ `self.container_field` is assigned to here but it was already borrowed
LL | first;
| ----- borrow later used here
--> $DIR/two-phase-allow-access-during-reservation.rs:26:19
|
LL | /*1*/ let p = &mut i; // (reservation of `i` starts here)
- | ------ borrow of `i` occurs here
+ | ------ `i` is borrowed here
LL |
LL | /*2*/ let j = i; // OK: `i` is only reserved here
| ^ use of borrowed `i`
--> $DIR/two-phase-allow-access-during-reservation.rs:31:19
|
LL | /*1*/ let p = &mut i; // (reservation of `i` starts here)
- | ------ borrow of `i` occurs here
+ | ------ `i` is borrowed here
...
LL | /*4*/ let k = i;
| ^ use of borrowed `i`
--> $DIR/two-phase-surprise-no-conflict.rs:21:23
|
LL | let _mut_borrow = &mut *self;
- | ---------- borrow of `*self` occurs here
+ | ---------- `*self` is borrowed here
LL | let _access = self.cx;
| ^^^^^^^ use of borrowed `*self`
LL |
error[E0505]: cannot move out of `alloc` because it is borrowed
--> $DIR/leak-alloc.rs:26:10
|
+LL | let alloc = Alloc {};
+ | ----- binding `alloc` declared here
LL | let boxed = Box::new_in(10, alloc.by_ref());
| -------------- borrow of `alloc` occurs here
LL | let theref = Box::leak(boxed);
error[E0505]: cannot move out of `s` because it is borrowed
--> $DIR/btreemap_dropck.rs:15:10
|
+LL | let s = String::from("Hello World!");
+ | - binding `s` declared here
LL | let _map = BTreeMap::from_iter([((), PrintOnDrop(&s))]);
| -- borrow of `s` occurs here
LL | drop(s);
--> $DIR/variadic-ffi-4.rs:28:11
|
LL | pub unsafe extern "C" fn no_escape4(_: usize, mut ap0: &mut VaListImpl, mut ap1: ...) {
- | - let's call the lifetime of this reference `'3`
+ | - ------- binding `ap1` declared here
+ | |
+ | let's call the lifetime of this reference `'3`
LL | ap0 = &mut ap1;
| ------^^^^^^^^
| | |
--> $DIR/arrays.rs:14:5
|
LL | let mut c = || {
- | -- borrow of `arr` occurs here
+ | -- `arr` is borrowed here
LL | arr[0] += 10;
| --- borrow occurs due to use of `arr` in closure
...
--> $DIR/arrays.rs:14:5
|
LL | let mut c = || {
- | -- borrow of `arr` occurs here
+ | -- `arr` is borrowed here
LL | arr[0] += 10;
| --- borrow occurs due to use of `arr` in closure
...
--> $DIR/arrays.rs:29:5
|
LL | let c = || {
- | -- borrow of `arr[_]` occurs here
+ | -- `arr[_]` is borrowed here
LL | println!("{:#?}", &arr[3..4]);
| --- borrow occurs due to use in closure
...
LL | arr[1] += 10;
- | ^^^^^^^^^^^^ assignment to borrowed `arr[_]` occurs here
+ | ^^^^^^^^^^^^ `arr[_]` is assigned to here but it was already borrowed
LL |
LL | c();
| - borrow later used here
--> $DIR/arrays.rs:43:5
|
LL | let c = || {
- | -- borrow of `arr[_]` occurs here
+ | -- `arr[_]` is borrowed here
LL | println!("{}", arr[3]);
| --- borrow occurs due to use in closure
...
LL | arr[1] += 10;
- | ^^^^^^^^^^^^ assignment to borrowed `arr[_]` occurs here
+ | ^^^^^^^^^^^^ `arr[_]` is assigned to here but it was already borrowed
LL |
LL | c();
| - borrow later used here
--> $DIR/arrays.rs:57:20
|
LL | let mut c = || {
- | -- borrow of `arr` occurs here
+ | -- `arr` is borrowed here
LL | arr[1] += 10;
| --- borrow occurs due to use of `arr` in closure
...
--> $DIR/box.rs:21:5
|
LL | let mut c = || {
- | -- borrow of `e.0.0.m.x` occurs here
+ | -- `e.0.0.m.x` is borrowed here
LL | e.0.0.m.x = format!("not-x");
| --------- borrow occurs due to use in closure
...
LL | e.0.0.m.x = format!("not-x");
- | ^^^^^^^^^ assignment to borrowed `e.0.0.m.x` occurs here
+ | ^^^^^^^^^ `e.0.0.m.x` is assigned to here but it was already borrowed
LL |
LL | c();
| - borrow later used here
--> $DIR/box.rs:55:5
|
LL | let c = || {
- | -- borrow of `e.0.0.m.x` occurs here
+ | -- `e.0.0.m.x` is borrowed here
LL | println!("{}", e.0.0.m.x);
| --------- borrow occurs due to use in closure
...
LL | e.0.0.m.x = format!("not-x");
- | ^^^^^^^^^ assignment to borrowed `e.0.0.m.x` occurs here
+ | ^^^^^^^^^ `e.0.0.m.x` is assigned to here but it was already borrowed
LL |
LL | c();
| - borrow later used here
fn main() {
let mut a = A { y: 1 };
let mut c = || {
- //~^ borrow of `a.y` occurs here
+ //~^ `a.y` is borrowed here
let _ = unsafe { &a.y };
let _ = &mut a;
//~^ borrow occurs due to use in closure
};
a.y = 1;
//~^ cannot assign to `a.y` because it is borrowed [E0506]
- //~| assignment to borrowed `a.y` occurs here
+ //~| `a.y` is assigned to here
c();
//~^ borrow later used here
}
--> $DIR/union.rs:20:5
|
LL | let mut c = || {
- | -- borrow of `a.y` occurs here
+ | -- `a.y` is borrowed here
...
LL | let _ = &mut a;
| - borrow occurs due to use in closure
...
LL | a.y = 1;
- | ^^^^^^^ assignment to borrowed `a.y` occurs here
+ | ^^^^^^^ `a.y` is assigned to here but it was already borrowed
...
LL | c();
| - borrow later used here
--> $DIR/coerce-overloaded-autoderef-fail.rs:17:5
|
LL | let y = borrow(x);
- | - borrow of `**x` occurs here
+ | - `**x` is borrowed here
LL | let z = borrow(x);
LL | **x += 1;
- | ^^^^^^^^ assignment to borrowed `**x` occurs here
+ | ^^^^^^^^ `**x` is assigned to here but it was already borrowed
LL |
LL | drop((y, z));
| - borrow later used here
LL | let x: &'static u32 = {
| ------------ type annotation requires that `y` is borrowed for `'static`
LL | let y = 42;
+ | - binding `y` declared here
LL | &y
| ^^ borrowed value does not live long enough
LL | };
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/drop-with-active-borrows-1.rs:4:10
|
+LL | let a = "".to_string();
+ | - binding `a` declared here
LL | let b: Vec<&str> = a.lines().collect();
| --------- borrow of `a` occurs here
LL | drop(a);
error[E0597]: `c_shortest` does not live long enough
--> $DIR/dropck-eyepatch-extern-crate.rs:46:23
|
+LL | let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>);
+ | ---------- binding `c_shortest` declared here
+...
LL | dt = Dt("dt", &c_shortest);
| ^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `c_shortest` does not live long enough
--> $DIR/dropck-eyepatch-extern-crate.rs:68:32
|
+LL | let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>);
+ | ---------- binding `c_shortest` declared here
+...
LL | pt = Pt("pt", &c_long, &c_shortest);
| ^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `c_shortest` does not live long enough
--> $DIR/dropck-eyepatch-reorder.rs:64:23
|
+LL | let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>);
+ | ---------- binding `c_shortest` declared here
+...
LL | dt = Dt("dt", &c_shortest);
| ^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `c_shortest` does not live long enough
--> $DIR/dropck-eyepatch-reorder.rs:86:32
|
+LL | let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>);
+ | ---------- binding `c_shortest` declared here
+...
LL | pt = Pt("pt", &c_long, &c_shortest);
| ^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `c_shortest` does not live long enough
--> $DIR/dropck-eyepatch.rs:88:23
|
+LL | let (mut dt, mut dr, c_shortest): (Dt<_>, Dr<_>, Cell<_>);
+ | ---------- binding `c_shortest` declared here
+...
LL | dt = Dt("dt", &c_shortest);
| ^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `c_shortest` does not live long enough
--> $DIR/dropck-eyepatch.rs:110:32
|
+LL | let (mut pt, mut pr, c_shortest): (Pt<_, _>, Pr<_>, Cell<_>);
+ | ---------- binding `c_shortest` declared here
+...
LL | pt = Pt("pt", &c_long, &c_shortest);
| ^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `v` does not live long enough
--> $DIR/dropck-union.rs:37:18
|
+LL | let v : Wrap<C> = Wrap::new(C(Cell::new(None)));
+ | - binding `v` declared here
LL | v.0.set(Some(&v));
| ^^ borrowed value does not live long enough
LL | }
--> $DIR/dropck_trait_cycle_checked.rs:111:13
|
LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new());
- | -------- cast requires that `o2` is borrowed for `'static`
+ | -- binding `o2` declared here -------- cast requires that `o2` is borrowed for `'static`
LL | o1.set0(&o2);
| ^^^ borrowed value does not live long enough
...
--> $DIR/dropck_trait_cycle_checked.rs:112:13
|
LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new());
- | -------- cast requires that `o3` is borrowed for `'static`
+ | -- binding `o3` declared here -------- cast requires that `o3` is borrowed for `'static`
LL | o1.set0(&o2);
LL | o1.set1(&o3);
| ^^^ borrowed value does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:113:13
|
LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new());
- | -------- cast requires that `o2` is borrowed for `'static`
+ | -- binding `o2` declared here -------- cast requires that `o2` is borrowed for `'static`
...
LL | o2.set0(&o2);
| ^^^ borrowed value does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:114:13
|
LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new());
- | -------- cast requires that `o3` is borrowed for `'static`
+ | -- binding `o3` declared here -------- cast requires that `o3` is borrowed for `'static`
...
LL | o2.set1(&o3);
| ^^^ borrowed value does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:115:13
|
LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new());
- | -------- cast requires that `o1` is borrowed for `'static`
+ | -- binding `o1` declared here -------- cast requires that `o1` is borrowed for `'static`
...
LL | o3.set0(&o1);
| ^^^ borrowed value does not live long enough
--> $DIR/dropck_trait_cycle_checked.rs:116:13
|
LL | let (o1, o2, o3): (Box<dyn Obj>, Box<dyn Obj>, Box<dyn Obj>) = (O::new(), O::new(), O::new());
- | -------- cast requires that `o2` is borrowed for `'static`
+ | -- binding `o2` declared here -------- cast requires that `o2` is borrowed for `'static`
...
LL | o3.set1(&o2);
| ^^^ borrowed value does not live long enough
|
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
-...
+LL | // With a vec of ints.
+LL | let f1 = Fat { ptr: [1, 2, 3] };
+ | -- binding `f1` declared here
LL | let f2: &Fat<[isize; 3]> = &f1;
| ^^^ borrowed value does not live long enough
LL | let f3: &'a Fat<[isize]> = f2;
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
+LL | let f1 = Fat { ptr: Foo };
+ | -- binding `f1` declared here
LL | let f2: &Fat<Foo> = &f1;
| ^^^ borrowed value does not live long enough
LL | let f3: &'a Fat<dyn Bar> = f2;
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
+LL | let f1 = ([1, 2, 3],);
+ | -- binding `f1` declared here
LL | let f2: &([isize; 3],) = &f1;
| ^^^ borrowed value does not live long enough
LL | let f3: &'a ([isize],) = f2;
LL | fn baz<'a>() {
| -- lifetime `'a` defined here
...
+LL | let f1 = (Foo,);
+ | -- binding `f1` declared here
LL | let f2: &(Foo,) = &f1;
| ^^^ borrowed value does not live long enough
LL | let f3: &'a (dyn Bar,) = f2;
--> $DIR/E0503.rs:4:16
|
LL | let _borrow = &mut value;
- | ---------- borrow of `value` occurs here
+ | ---------- `value` is borrowed here
LL | let _sum = value + 1;
| ^^^^^ use of borrowed `value`
LL | _borrow.use_mut();
error[E0505]: cannot move out of `fancy_num` because it is borrowed
--> $DIR/E0504.rs:9:13
|
+LL | let fancy_num = FancyNum { num: 5 };
+ | --------- binding `fancy_num` declared here
LL | let fancy_ref = &fancy_num;
| ---------- borrow of `fancy_num` occurs here
LL |
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/E0505.rs:9:13
|
+LL | let x = Value{};
+ | - binding `x` declared here
+LL | {
LL | let _ref_to_val: &Value = &x;
| -- borrow of `x` occurs here
LL | eat(x);
--> $DIR/E0506.rs:8:5
|
LL | let fancy_ref = &fancy_num;
- | ---------- borrow of `fancy_num` occurs here
+ | ---------- `fancy_num` is borrowed here
LL | fancy_num = FancyNum { num: 6 };
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ assignment to borrowed `fancy_num` occurs here
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `fancy_num` is assigned to here but it was already borrowed
LL |
LL | println!("Num: {}, Ref: {}", fancy_num.num, fancy_ref.num);
| ------------- borrow later used here
error[E0597]: `y` does not live long enough
--> $DIR/E0597.rs:8:16
|
+LL | let y = 0;
+ | - binding `y` declared here
LL | x.x = Some(&y);
| ^^ borrowed value does not live long enough
LL |
--- /dev/null
+// Check that even though Cell: DispatchFromDyn it remains an invalid self parameter type
+
+use std::cell::Cell;
+
+trait Trait{
+ fn cell(self: Cell<&Self>); //~ ERROR invalid `self` parameter type: Cell<&Self>
+}
+
+fn main() {}
--- /dev/null
+error[E0307]: invalid `self` parameter type: Cell<&Self>
+ --> $DIR/feature-gate-dispatch-from-dyn-cell.rs:6:19
+ |
+LL | fn cell(self: Cell<&Self>);
+ | ^^^^^^^^^^^
+ |
+ = note: type of `self` must be `Self` or a type that dereferences to it
+ = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0307`.
--- /dev/null
+// Check that a self parameter type requires a DispatchFromDyn impl to be object safe
+
+#![feature(arbitrary_self_types, unsize, coerce_unsized)]
+
+use std::{
+ marker::Unsize,
+ ops::{CoerceUnsized, Deref},
+};
+
+struct Ptr<T: ?Sized>(Box<T>);
+
+impl<T: ?Sized> Deref for Ptr<T> {
+ type Target = T;
+
+ fn deref(&self) -> &T {
+ &*self.0
+ }
+}
+
+impl<T: Unsize<U> + ?Sized, U: ?Sized> CoerceUnsized<Ptr<U>> for Ptr<T> {}
+// Because this impl is missing the coercion below fails.
+// impl<T: Unsize<U> + ?Sized, U: ?Sized> DispatchFromDyn<Ptr<U>> for Ptr<T> {}
+
+trait Trait {
+ fn ptr(self: Ptr<Self>);
+}
+impl Trait for i32 {
+ fn ptr(self: Ptr<Self>) {}
+}
+
+fn main() {
+ Ptr(Box::new(4)) as Ptr<dyn Trait>;
+ //~^ ERROR the trait `Trait` cannot be made into an object
+ //~^^ ERROR the trait `Trait` cannot be made into an object
+}
--- /dev/null
+error[E0038]: the trait `Trait` cannot be made into an object
+ --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:32:25
+ |
+LL | fn ptr(self: Ptr<Self>);
+ | --------- help: consider changing method `ptr`'s `self` parameter to be `&self`: `&Self`
+...
+LL | Ptr(Box::new(4)) as Ptr<dyn Trait>;
+ | ^^^^^^^^^^^^^^ `Trait` cannot be made into an object
+ |
+note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
+ --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:25:18
+ |
+LL | trait Trait {
+ | ----- this trait cannot be made into an object...
+LL | fn ptr(self: Ptr<Self>);
+ | ^^^^^^^^^ ...because method `ptr`'s `self` parameter cannot be dispatched on
+
+error[E0038]: the trait `Trait` cannot be made into an object
+ --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:32:5
+ |
+LL | fn ptr(self: Ptr<Self>);
+ | --------- help: consider changing method `ptr`'s `self` parameter to be `&self`: `&Self`
+...
+LL | Ptr(Box::new(4)) as Ptr<dyn Trait>;
+ | ^^^^^^^^^^^^^^^^ `Trait` cannot be made into an object
+ |
+note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
+ --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:25:18
+ |
+LL | trait Trait {
+ | ----- this trait cannot be made into an object...
+LL | fn ptr(self: Ptr<Self>);
+ | ^^^^^^^^^ ...because method `ptr`'s `self` parameter cannot be dispatched on
+note: required for `Ptr<{integer}>` to implement `CoerceUnsized<Ptr<dyn Trait>>`
+ --> $DIR/feature-gate-dispatch-from-dyn-missing-impl.rs:20:40
+ |
+LL | impl<T: Unsize<U> + ?Sized, U: ?Sized> CoerceUnsized<Ptr<U>> for Ptr<T> {}
+ | --------- ^^^^^^^^^^^^^^^^^^^^^ ^^^^^^
+ | |
+ | unsatisfied trait bound introduced here
+ = note: required by cast to type `Ptr<dyn Trait>`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0038`.
|
= note: expected fn item `fn() {f}`
found fn item `fn() {g}`
+ = note: different fn items have unique types, even if their signatures are the same
+ = help: consider casting both fn items to fn pointers using `as fn()`
error: aborting due to 2 previous errors
// Test that the types of distinct fn items are not compatible by
// default. See also `run-pass/fn-item-type-*.rs`.
-fn foo<T>(x: isize) -> isize { x * 2 }
-fn bar<T>(x: isize) -> isize { x * 4 }
+fn foo<T>(x: isize) -> isize {
+ x * 2
+}
+fn bar<T>(x: isize) -> isize {
+ x * 4
+}
-fn eq<T>(x: T, y: T) { }
+fn eq<T>(x: T, y: T) {}
-trait Foo { fn foo() { /* this is a default fn */ } }
-impl<T> Foo for T { /* `foo` is still default here */ }
+trait Foo {
+ fn foo() { /* this is a default fn */
+ }
+}
+impl<T> Foo for T {
+ /* `foo` is still default here */
+}
fn main() {
eq(foo::<u8>, bar::<u8>);
//~| expected fn item `fn(_) -> _ {foo::<u8>}`
//~| found fn item `fn(_) -> _ {bar::<u8>}`
//~| expected fn item, found a different fn item
- //~| different `fn` items always have unique types, even if their signatures are the same
- //~| change the expected type to be function pointer
- //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
+ //~| different fn items have unique types, even if their signatures are the same
eq(foo::<u8>, foo::<i8>);
//~^ ERROR mismatched types
//~| expected `u8`, found `i8`
- //~| different `fn` items always have unique types, even if their signatures are the same
- //~| change the expected type to be function pointer
- //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
+ //~| different fn items have unique types, even if their signatures are the same
eq(bar::<String>, bar::<Vec<u8>>);
//~^ ERROR mismatched types
//~| found fn item `fn(_) -> _ {bar::<Vec<u8>>}`
//~| expected struct `String`, found struct `Vec`
- //~| different `fn` items always have unique types, even if their signatures are the same
- //~| change the expected type to be function pointer
- //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
+ //~| different fn items have unique types, even if their signatures are the same
// Make sure we distinguish between trait methods correctly.
eq(<u8 as Foo>::foo, <u16 as Foo>::foo);
//~^ ERROR mismatched types
//~| expected `u8`, found `u16`
- //~| different `fn` items always have unique types, even if their signatures are the same
- //~| change the expected type to be function pointer
- //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
+ //~| different fn items have unique types, even if their signatures are the same
eq(foo::<u8>, bar::<u8> as fn(isize) -> isize);
//~^ ERROR mismatched types
//~| found fn pointer `fn(_) -> _`
//~| expected fn item, found fn pointer
- //~| change the expected type to be function pointer
- //~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
eq(foo::<u8> as fn(isize) -> isize, bar::<u8>); // ok!
}
error[E0308]: mismatched types
- --> $DIR/fn-item-type.rs:13:19
+ --> $DIR/fn-item-type.rs:22:19
|
LL | eq(foo::<u8>, bar::<u8>);
| -- ^^^^^^^^^ expected fn item, found a different fn item
|
= note: expected fn item `fn(_) -> _ {foo::<u8>}`
found fn item `fn(_) -> _ {bar::<u8>}`
- = note: different `fn` items always have unique types, even if their signatures are the same
- = help: change the expected type to be function pointer `fn(isize) -> isize`
- = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `foo::<u8> as fn(isize) -> isize`
+ = note: different fn items have unique types, even if their signatures are the same
note: function defined here
- --> $DIR/fn-item-type.rs:7:4
+ --> $DIR/fn-item-type.rs:11:4
|
-LL | fn eq<T>(x: T, y: T) { }
+LL | fn eq<T>(x: T, y: T) {}
| ^^ ----
+ = help: consider casting both fn items to fn pointers using `as fn(isize) -> isize`
error[E0308]: mismatched types
- --> $DIR/fn-item-type.rs:22:19
+ --> $DIR/fn-item-type.rs:29:19
|
LL | eq(foo::<u8>, foo::<i8>);
| -- ^^^^^^^^^ expected `u8`, found `i8`
|
= note: expected fn item `fn(_) -> _ {foo::<u8>}`
found fn item `fn(_) -> _ {foo::<i8>}`
- = note: different `fn` items always have unique types, even if their signatures are the same
- = help: change the expected type to be function pointer `fn(isize) -> isize`
- = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `foo::<u8> as fn(isize) -> isize`
+ = note: different fn items have unique types, even if their signatures are the same
note: function defined here
- --> $DIR/fn-item-type.rs:7:4
+ --> $DIR/fn-item-type.rs:11:4
|
-LL | fn eq<T>(x: T, y: T) { }
+LL | fn eq<T>(x: T, y: T) {}
| ^^ ----
+ = help: consider casting both fn items to fn pointers using `as fn(isize) -> isize`
error[E0308]: mismatched types
- --> $DIR/fn-item-type.rs:29:23
+ --> $DIR/fn-item-type.rs:34:23
|
LL | eq(bar::<String>, bar::<Vec<u8>>);
| -- ^^^^^^^^^^^^^^ expected struct `String`, found struct `Vec`
|
= note: expected fn item `fn(_) -> _ {bar::<String>}`
found fn item `fn(_) -> _ {bar::<Vec<u8>>}`
- = note: different `fn` items always have unique types, even if their signatures are the same
- = help: change the expected type to be function pointer `fn(isize) -> isize`
- = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `bar::<String> as fn(isize) -> isize`
+ = note: different fn items have unique types, even if their signatures are the same
note: function defined here
- --> $DIR/fn-item-type.rs:7:4
+ --> $DIR/fn-item-type.rs:11:4
|
-LL | fn eq<T>(x: T, y: T) { }
+LL | fn eq<T>(x: T, y: T) {}
| ^^ ----
+ = help: consider casting both fn items to fn pointers using `as fn(isize) -> isize`
error[E0308]: mismatched types
- --> $DIR/fn-item-type.rs:38:26
+ --> $DIR/fn-item-type.rs:41:26
|
LL | eq(<u8 as Foo>::foo, <u16 as Foo>::foo);
| -- ^^^^^^^^^^^^^^^^^ expected `u8`, found `u16`
|
= note: expected fn item `fn() {<u8 as Foo>::foo}`
found fn item `fn() {<u16 as Foo>::foo}`
- = note: different `fn` items always have unique types, even if their signatures are the same
- = help: change the expected type to be function pointer `fn()`
- = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `<u8 as Foo>::foo as fn()`
+ = note: different fn items have unique types, even if their signatures are the same
note: function defined here
- --> $DIR/fn-item-type.rs:7:4
+ --> $DIR/fn-item-type.rs:11:4
|
-LL | fn eq<T>(x: T, y: T) { }
+LL | fn eq<T>(x: T, y: T) {}
| ^^ ----
+ = help: consider casting both fn items to fn pointers using `as fn()`
error[E0308]: mismatched types
- --> $DIR/fn-item-type.rs:45:19
+ --> $DIR/fn-item-type.rs:46:19
|
LL | eq(foo::<u8>, bar::<u8> as fn(isize) -> isize);
| -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected fn item, found fn pointer
|
= note: expected fn item `fn(_) -> _ {foo::<u8>}`
found fn pointer `fn(_) -> _`
- = help: change the expected type to be function pointer `fn(isize) -> isize`
- = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `foo::<u8> as fn(isize) -> isize`
+ = help: consider casting the fn item to a fn pointer: `foo::<u8> as fn(isize) -> isize`
note: function defined here
- --> $DIR/fn-item-type.rs:7:4
+ --> $DIR/fn-item-type.rs:11:4
|
-LL | fn eq<T>(x: T, y: T) { }
+LL | fn eq<T>(x: T, y: T) {}
| ^^ ----
error: aborting due to 5 previous errors
--- /dev/null
+fn foo(x: u32) -> u32 {
+ x * 2
+}
+
+fn bar(x: u32) -> u32 {
+ x * 3
+}
+
+// original example from Issue #102608
+fn foobar(n: u32) -> u32 {
+ let g = if n % 2 == 0 { &foo } else { &bar };
+ //~^ ERROR `if` and `else` have incompatible types
+ //~| different fn items have unique types, even if their signatures are the same
+ g(n)
+}
+
+fn main() {
+ assert_eq!(foobar(7), 21);
+ assert_eq!(foobar(8), 16);
+
+ // general mismatch of fn item types
+ let mut a = foo;
+ a = bar;
+ //~^ ERROR mismatched types
+ //~| expected fn item `fn(_) -> _ {foo}`
+ //~| found fn item `fn(_) -> _ {bar}`
+ //~| different fn items have unique types, even if their signatures are the same
+
+ // display note even when boxed
+ let mut b = Box::new(foo);
+ b = Box::new(bar);
+ //~^ ERROR mismatched types
+ //~| different fn items have unique types, even if their signatures are the same
+
+ // suggest removing reference
+ let c: fn(u32) -> u32 = &foo;
+ //~^ ERROR mismatched types
+ //~| expected fn pointer `fn(u32) -> u32`
+ //~| found reference `&fn(u32) -> u32 {foo}`
+
+ // suggest using reference
+ let d: &fn(u32) -> u32 = foo;
+ //~^ ERROR mismatched types
+ //~| expected reference `&fn(u32) -> u32`
+ //~| found fn item `fn(u32) -> u32 {foo}`
+
+ // suggest casting with reference
+ let e: &fn(u32) -> u32 = &foo;
+ //~^ ERROR mismatched types
+ //~| expected reference `&fn(u32) -> u32`
+ //~| found reference `&fn(u32) -> u32 {foo}`
+
+ // OK
+ let mut z: fn(u32) -> u32 = foo as fn(u32) -> u32;
+ z = bar;
+}
--- /dev/null
+error[E0308]: `if` and `else` have incompatible types
+ --> $DIR/fn-pointer-mismatch.rs:11:43
+ |
+LL | let g = if n % 2 == 0 { &foo } else { &bar };
+ | ---- ^^^^ expected fn item, found a different fn item
+ | |
+ | expected because of this
+ |
+ = note: expected reference `&fn(u32) -> u32 {foo}`
+ found reference `&fn(u32) -> u32 {bar}`
+ = note: different fn items have unique types, even if their signatures are the same
+ = help: consider casting both fn items to fn pointers using `as fn(u32) -> u32`
+
+error[E0308]: mismatched types
+ --> $DIR/fn-pointer-mismatch.rs:23:9
+ |
+LL | let mut a = foo;
+ | --- expected due to this value
+LL | a = bar;
+ | ^^^ expected fn item, found a different fn item
+ |
+ = note: expected fn item `fn(_) -> _ {foo}`
+ found fn item `fn(_) -> _ {bar}`
+ = note: different fn items have unique types, even if their signatures are the same
+ = help: consider casting both fn items to fn pointers using `as fn(u32) -> u32`
+
+error[E0308]: mismatched types
+ --> $DIR/fn-pointer-mismatch.rs:31:18
+ |
+LL | b = Box::new(bar);
+ | -------- ^^^ expected fn item, found a different fn item
+ | |
+ | arguments to this function are incorrect
+ |
+ = note: expected fn item `fn(_) -> _ {foo}`
+ found fn item `fn(_) -> _ {bar}`
+ = note: different fn items have unique types, even if their signatures are the same
+note: associated function defined here
+ --> $SRC_DIR/alloc/src/boxed.rs:LL:COL
+ = help: consider casting both fn items to fn pointers using `as fn(u32) -> u32`
+
+error[E0308]: mismatched types
+ --> $DIR/fn-pointer-mismatch.rs:36:29
+ |
+LL | let c: fn(u32) -> u32 = &foo;
+ | -------------- ^^^^
+ | | |
+ | | expected fn pointer, found reference
+ | | help: consider removing the reference: `foo`
+ | expected due to this
+ |
+ = note: expected fn pointer `fn(u32) -> u32`
+ found reference `&fn(u32) -> u32 {foo}`
+
+error[E0308]: mismatched types
+ --> $DIR/fn-pointer-mismatch.rs:42:30
+ |
+LL | let d: &fn(u32) -> u32 = foo;
+ | --------------- ^^^
+ | | |
+ | | expected `&fn(u32) -> u32`, found fn item
+ | | help: consider using a reference: `&foo`
+ | expected due to this
+ |
+ = note: expected reference `&fn(u32) -> u32`
+ found fn item `fn(u32) -> u32 {foo}`
+
+error[E0308]: mismatched types
+ --> $DIR/fn-pointer-mismatch.rs:48:30
+ |
+LL | let e: &fn(u32) -> u32 = &foo;
+ | --------------- ^^^^
+ | | |
+ | | expected fn pointer, found fn item
+ | | help: consider casting to a fn pointer: `&(foo as fn(u32) -> u32)`
+ | expected due to this
+ |
+ = note: expected reference `&fn(u32) -> u32`
+ found reference `&fn(u32) -> u32 {foo}`
+ = note: fn items are distinct from fn pointers
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/implied-bounds-unnorm-associated-type-4.rs:21:10
|
+LL | let x = String::from("Hello World!");
+ | - binding `x` declared here
LL | let y = f(&x, ());
| -- borrow of `x` occurs here
LL | drop(x);
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/implied-bounds-unnorm-associated-type.rs:20:10
|
+LL | let x = String::from("Hello World!");
+ | - binding `x` declared here
LL | let y = f(&x, ());
| -- borrow of `x` occurs here
LL | drop(x);
error[E0597]: `*cell` does not live long enough
--> $DIR/dropck.rs:10:40
|
+LL | let (mut gen, cell);
+ | ---- binding `cell` declared here
+LL | cell = Box::new(RefCell::new(0));
LL | let ref_ = Box::leak(Box::new(Some(cell.borrow_mut())));
| ^^^^^^^^^^^^^^^^^ borrowed value does not live long enough
...
require_send(send_gen);
//~^ ERROR generator cannot be sent between threads
//~| NOTE not `Send`
+ //~| NOTE use `std::sync::RwLock` instead
}
pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> {
//~| NOTE required for
//~| NOTE required by a bound introduced by this call
//~| NOTE captures the following types
+ //~| NOTE use `std::sync::RwLock` instead
}
fn main() {}
| ^^^^^^^^ generator is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: generator is not `Send` as this value is used across a yield
--> $DIR/issue-68112.rs:36:9
|
| ^^^^ required by this bound in `require_send`
error[E0277]: `RefCell<i32>` cannot be shared between threads safely
- --> $DIR/issue-68112.rs:63:18
+ --> $DIR/issue-68112.rs:64:18
|
LL | require_send(send_gen);
| ------------ ^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
| required by a bound introduced by this call
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Arc<RefCell<i32>>` to implement `Send`
note: required because it's used within this generator
- --> $DIR/issue-68112.rs:48:5
+ --> $DIR/issue-68112.rs:49:5
|
LL | || {
| ^^
note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>`
- --> $DIR/issue-68112.rs:45:30
+ --> $DIR/issue-68112.rs:46:30
|
LL | pub fn make_gen2<T>(t: T) -> impl Generator<Return = T> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
note: required because it appears within the type `impl Generator<Return = Arc<RefCell<i32>>>`
- --> $DIR/issue-68112.rs:53:34
+ --> $DIR/issue-68112.rs:54:34
|
LL | fn make_non_send_generator2() -> impl Generator<Return = Arc<RefCell<i32>>> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: required because it captures the following types: `impl Generator<Return = Arc<RefCell<i32>>>`, `()`
note: required because it's used within this generator
- --> $DIR/issue-68112.rs:59:20
+ --> $DIR/issue-68112.rs:60:20
|
LL | let send_gen = || {
| ^^
| |_____^ `Cell<i32>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
= note: required for `&Cell<i32>` to implement `Send`
note: required because it's used within this generator
--> $DIR/not-send-sync.rs:16:17
| |_____^ generator is not `Sync`
|
= help: within `[generator@$DIR/not-send-sync.rs:9:17: 9:19]`, the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
note: generator is not `Sync` as this value is used across a yield
--> $DIR/not-send-sync.rs:12:9
|
| ^^^^^^^^ generator is not `Send`
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: generator is not `Send` as this value is used across a yield
--> $DIR/generator-print-verbose-1.rs:35:9
|
| required by a bound introduced by this call
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Arc<RefCell<i32>>` to implement `Send`
note: required because it's used within this generator
--> $DIR/generator-print-verbose-1.rs:42:5
| |_____^ `Cell<i32>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
= note: required for `&'_#4r Cell<i32>` to implement `Send`
note: required because it's used within this generator
--> $DIR/generator-print-verbose-2.rs:19:17
| |_____^ generator is not `Sync`
|
= help: within `[main::{closure#0} upvar_tys=() {Cell<i32>, ()}]`, the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
note: generator is not `Sync` as this value is used across a yield
--> $DIR/generator-print-verbose-2.rs:15:9
|
LL | fn bug<'a, T: ?Sized + Fun<F<'a> = [u8]>>(_ : Box<T>) -> &'static T::F<'a> {
| -- lifetime `'a` defined here
LL | let a = [0; 1];
+ | - binding `a` declared here
LL | let _x = T::identity(&a);
| ------------^^-
| | |
--> $DIR/hrtb-identity-fn-borrows.rs:14:5
|
LL | let y = f.call(&x);
- | -- borrow of `x` occurs here
+ | -- `x` is borrowed here
LL | x = 5;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
...
LL | drop(y);
| - borrow later used here
LL | let x = {
| - borrow later stored here
LL | let bar = 22;
+ | --- binding `bar` declared here
LL | Foo::new(&bar).into()
| ^^^^ borrowed value does not live long enough
LL |
LL | let x = {
| - borrow later stored here
LL | let y = ();
+ | - binding `y` declared here
LL | foo(&y)
| ^^ borrowed value does not live long enough
LL |
LL | let x = {
| - borrow later stored here
LL | let y = ();
+ | - binding `y` declared here
LL | foo(&y)
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `x` does not live long enough
--> $DIR/assoc-ty-wf-used-to-get-assoc-ty.rs:24:31
|
+LL | let x: u8 = 3;
+ | - binding `x` declared here
LL | let _: &'static u8 = test(&x, &&3);
| -----^^------
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let y = ();
+ | - binding `y` declared here
LL | equate(InvariantRef::new(&y), const { InvariantRef::<'a>::NEW });
| ------------------^^-
| | |
--- /dev/null
+// Issue #66530: We would ICE if someone compiled with `-o /dev/null`,
+// because we would try to generate auxiliary files in `/dev/` (which
+// at least the OS X file system rejects).
+//
+// An attempt to `-o` into a directory we cannot write into should indeed
+// be an error; but not an ICE.
+//
+// However, some folks run tests as root, which can write `/dev/` and end
+// up clobbering `/dev/null`. Instead we'll use a non-existent path, which
+// also used to ICE, but even root can't magically write there.
+
+// compile-flags: -Z temps-dir=/does-not-exist/output
+
+// The error-pattern check occurs *before* normalization, and the error patterns
+// are wildly different between build environments. So this is a cop-out (and we
+// rely on the checking of the normalized stderr output as our actual
+// "verification" of the diagnostic).
+
+// error-pattern: error
+
+// On Mac OS X, we get an error like the below
+// normalize-stderr-test "failed to write bytecode to /does-not-exist/output.non_ice_error_on_worker_io_fail.*" -> "io error modifying /does-not-exist/"
+
+// On Linux, we get an error like the below
+// normalize-stderr-test "couldn't create a temp dir.*" -> "io error modifying /does-not-exist/"
+
+// ignore-windows - this is a unix-specific test
+// ignore-emscripten - the file-system issues do not replicate here
+// ignore-wasm - the file-system issues do not replicate here
+// ignore-arm - the file-system issues do not replicate here, at least on armhf-gnu
+
+#![crate_type = "lib"]
+#![cfg_attr(not(feature = "std"), no_std)]
+pub mod task {
+ pub mod __internal {
+ use crate::task::Waker;
+ }
+ pub use core::task::Waker;
+}
--- /dev/null
+error: failed to find or create the directory specified by `--temps-dir`
+
+error: aborting due to previous error
+
--- /dev/null
+// Issue #66530: We would ICE if someone compiled with `-o /dev/null`,
+// because we would try to generate auxiliary files in `/dev/` (which
+// at least the OS X file system rejects).
+//
+// An attempt to `-o` into a directory we cannot write into should indeed
+// be an error; but not an ICE.
+//
+// However, some folks run tests as root, which can write `/dev/` and end
+// up clobbering `/dev/null`. Instead we'll use a non-existent path, which
+// also used to ICE, but even root can't magically write there.
+
+// compile-flags: -o /does-not-exist/output
+
+// The error-pattern check occurs *before* normalization, and the error patterns
+// are wildly different between build environments. So this is a cop-out (and we
+// rely on the checking of the normalized stderr output as our actual
+// "verification" of the diagnostic).
+
+// error-pattern: error
+
+// On Mac OS X, we get an error like the below
+// normalize-stderr-test "failed to write bytecode to /does-not-exist/output.non_ice_error_on_worker_io_fail.*" -> "io error modifying /does-not-exist/"
+
+// On Linux, we get an error like the below
+// normalize-stderr-test "couldn't create a temp dir.*" -> "io error modifying /does-not-exist/"
+
+// ignore-windows - this is a unix-specific test
+// ignore-emscripten - the file-system issues do not replicate here
+// ignore-wasm - the file-system issues do not replicate here
+// ignore-arm - the file-system issues do not replicate here, at least on armhf-gnu
+
+#![crate_type="lib"]
+
+#![cfg_attr(not(feature = "std"), no_std)]
+pub mod task {
+ pub mod __internal {
+ use crate::task::Waker;
+ }
+ pub use core::task::Waker;
+}
--- /dev/null
+warning: ignoring --out-dir flag due to -o flag
+
+error: io error modifying /does-not-exist/
+
+error: aborting due to previous error; 1 warning emitted
+
--> $DIR/issue-40288.rs:16:5
|
LL | save_ref(&*refr, &mut out);
- | ------ borrow of `*refr` occurs here
+ | ------ `*refr` is borrowed here
...
LL | *refr = 3;
- | ^^^^^^^^^ assignment to borrowed `*refr` occurs here
+ | ^^^^^^^^^ `*refr` is assigned to here but it was already borrowed
...
LL | println!("{:?}", out[0]);
| ------ borrow later used here
--> $DIR/issue-45697-1.rs:20:9
|
LL | let z = copy_borrowed_ptr(&mut y);
- | ------ borrow of `y` occurs here
+ | ------ `y` is borrowed here
LL | *y.pointer += 1;
| ^^^^^^^^^^^^^^^ use of borrowed `y`
...
--> $DIR/issue-45697-1.rs:20:9
|
LL | let z = copy_borrowed_ptr(&mut y);
- | ------ borrow of `*y.pointer` occurs here
+ | ------ `*y.pointer` is borrowed here
LL | *y.pointer += 1;
- | ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here
+ | ^^^^^^^^^^^^^^^ `*y.pointer` is assigned to here but it was already borrowed
...
LL | *z.pointer += 1;
| --------------- borrow later used here
--> $DIR/issue-45697.rs:20:9
|
LL | let z = copy_borrowed_ptr(&mut y);
- | ------ borrow of `y` occurs here
+ | ------ `y` is borrowed here
LL | *y.pointer += 1;
| ^^^^^^^^^^^^^^^ use of borrowed `y`
...
--> $DIR/issue-45697.rs:20:9
|
LL | let z = copy_borrowed_ptr(&mut y);
- | ------ borrow of `*y.pointer` occurs here
+ | ------ `*y.pointer` is borrowed here
LL | *y.pointer += 1;
- | ^^^^^^^^^^^^^^^ assignment to borrowed `*y.pointer` occurs here
+ | ^^^^^^^^^^^^^^^ `*y.pointer` is assigned to here but it was already borrowed
...
LL | *z.pointer += 1;
| --------------- borrow later used here
error[E0597]: `z` does not live long enough
--> $DIR/issue-46471-1.rs:4:9
|
+LL | let mut z = 0;
+ | ----- binding `z` declared here
LL | &mut z
- | ^^^^^^
- | |
- | borrowed value does not live long enough
- | borrow later used here
+ | ^^^^^^ borrowed value does not live long enough
LL | };
| - `z` dropped here while still borrowed
error[E0597]: `line` does not live long enough
--> $DIR/issue-52126-assign-op-invariance.rs:34:28
|
+LL | for line in vec!["123456789".to_string(), "12345678".to_string()] {
+ | ---- binding `line` declared here
LL | let v: Vec<&str> = line.split_whitespace().collect();
| ^^^^^^^^^^^^^^^^^^^^^^^ borrowed value does not live long enough
...
| ^^^^^^^^^^^^^^^^^^^ `RefCell<isize>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `RefCell<isize>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
= note: required for `Unique<RefCell<isize>>` to implement `Sync`
= note: required because it appears within the type `Box<RefCell<isize>>`
= note: shared static variables must have a type that implements `Sync`
--- /dev/null
+fn main() {
+ let x = Some(123);
+ if let Some(y) = x else { //~ ERROR this `if` expression is missing a block
+ return;
+ };
+}
--- /dev/null
+error: this `if` expression is missing a block after the condition
+ --> $DIR/accidental-if.rs:3:5
+ |
+LL | if let Some(y) = x else {
+ | ^^
+ |
+help: add a block here
+ --> $DIR/accidental-if.rs:3:23
+ |
+LL | if let Some(y) = x else {
+ | ^
+help: remove the `if` if you meant to write a `let...else` statement
+ --> $DIR/accidental-if.rs:3:5
+ |
+LL | if let Some(y) = x else {
+ | ^^
+
+error: aborting due to previous error
+
--- /dev/null
+// run-rustfix
+
+trait Greeter0 {
+ fn greet(&self);
+}
+
+trait Greeter1 {
+ fn greet(&self);
+}
+
+type BoxedGreeter<'a> = (Box<dyn Greeter0 + 'a>, Box<dyn Greeter1 + 'a>);
+//~^ HELP to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias
+
+struct FixedGreeter<'a>(pub &'a str);
+
+impl Greeter0 for FixedGreeter<'_> {
+ fn greet(&self) {
+ println!("0 {}", self.0)
+ }
+}
+
+impl Greeter1 for FixedGreeter<'_> {
+ fn greet(&self) {
+ println!("1 {}", self.0)
+ }
+}
+
+struct Greetings(pub Vec<String>);
+
+impl Greetings {
+ pub fn get(&self, i: usize) -> BoxedGreeter {
+ (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i])))
+ //~^ ERROR lifetime may not live long enough
+ }
+}
+
+fn main() {
+ let mut g = Greetings {0 : vec!()};
+ g.0.push("a".to_string());
+ g.0.push("b".to_string());
+ g.get(0).0.greet();
+ g.get(0).1.greet();
+ g.get(1).0.greet();
+ g.get(1).1.greet();
+}
--- /dev/null
+// run-rustfix
+
+trait Greeter0 {
+ fn greet(&self);
+}
+
+trait Greeter1 {
+ fn greet(&self);
+}
+
+type BoxedGreeter = (Box<dyn Greeter0>, Box<dyn Greeter1>);
+//~^ HELP to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias
+
+struct FixedGreeter<'a>(pub &'a str);
+
+impl Greeter0 for FixedGreeter<'_> {
+ fn greet(&self) {
+ println!("0 {}", self.0)
+ }
+}
+
+impl Greeter1 for FixedGreeter<'_> {
+ fn greet(&self) {
+ println!("1 {}", self.0)
+ }
+}
+
+struct Greetings(pub Vec<String>);
+
+impl Greetings {
+ pub fn get(&self, i: usize) -> BoxedGreeter {
+ (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i])))
+ //~^ ERROR lifetime may not live long enough
+ }
+}
+
+fn main() {
+ let mut g = Greetings {0 : vec!()};
+ g.0.push("a".to_string());
+ g.0.push("b".to_string());
+ g.get(0).0.greet();
+ g.get(0).1.greet();
+ g.get(1).0.greet();
+ g.get(1).1.greet();
+}
--- /dev/null
+error: lifetime may not live long enough
+ --> $DIR/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs:32:9
+ |
+LL | pub fn get(&self, i: usize) -> BoxedGreeter {
+ | - let's call the lifetime of this reference `'1`
+LL | (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i])))
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'1` must outlive `'static`
+ |
+help: to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias
+ |
+LL | type BoxedGreeter<'a> = (Box<dyn Greeter0 + 'a>, Box<dyn Greeter1 + 'a>);
+ | ++++ ++++ ++++
+
+error: aborting due to previous error
+
error[E0597]: `foo` does not live long enough
--> $DIR/issue-90600-expected-return-static-indirect.rs:7:32
|
+LL | fn inner(mut foo: &[u8]) {
+ | ------- binding `foo` declared here
LL | let refcell = RefCell::new(&mut foo);
| ^^^^^^^^ borrowed value does not live long enough
LL |
error[E0597]: `mutex` does not live long enough
--> $DIR/format-args-temporaries-in-write.rs:41:27
|
+LL | let mutex = Mutex;
+ | ----- binding `mutex` declared here
LL | write!(Out, "{}", mutex.lock()) /* no semicolon */
| ^^^^^^^^^^^^
| |
error[E0597]: `mutex` does not live long enough
--> $DIR/format-args-temporaries-in-write.rs:47:29
|
+LL | let mutex = Mutex;
+ | ----- binding `mutex` declared here
LL | writeln!(Out, "{}", mutex.lock()) /* no semicolon */
| ^^^^^^^^^^^^
| |
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem as usize\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem as usize\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!&*__local_bind0) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: &elem\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: &elem\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!(*__local_bind0 == 1)) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem == 1\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem == 1\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!(*__local_bind0 >= 1)) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem >= 1\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem >= 1\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!(*__local_bind0 > 0)) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem > 0\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem > 0\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!(*__local_bind0 < 3)) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem < 3\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem < 3\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!(*__local_bind0 <= 3)) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem <= 3\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem <= 3\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!(*__local_bind0 != 3)) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: elem != 3\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: elem != 3\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
if ::core::intrinsics::unlikely(!**__local_bind0) {
(&::core::asserting::Wrapper(__local_bind0)).try_capture(&mut __capture0);
{
- ::std::rt::panic_fmt(::core::fmt::Arguments::new_v1(&["Assertion failed: *elem\nWith captures:\n elem = ",
- "\n"], &[::core::fmt::ArgumentV1::new_debug(&__capture0)]))
+ ::std::rt::panic_fmt(format_args!("Assertion failed: *elem\nWith captures:\n elem = {0:?}\n",
+ __capture0))
}
}
};
LL | let _arg = match args.next() {
| ---- borrow later stored here
LL | Some(arg) => {
+ | --- binding `arg` declared here
LL | match arg.to_str() {
| ^^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0505]: cannot move out of `mut_foo` because it is borrowed
--> $DIR/move-fn-self-receiver.rs:50:5
|
+LL | let mut mut_foo = Foo;
+ | ----------- binding `mut_foo` declared here
LL | let ret = mut_foo.use_mut_self();
| ---------------------- borrow of `mut_foo` occurs here
LL | mut_foo;
--> $DIR/mut-pattern-internal-mutability.rs:13:5
|
LL | let &mut ref x = foo;
- | ----- borrow of `*foo` occurs here
+ | ----- `*foo` is borrowed here
LL | *foo += 1;
- | ^^^^^^^^^ assignment to borrowed `*foo` occurs here
+ | ^^^^^^^^^ `*foo` is assigned to here but it was already borrowed
LL | drop(x);
| - borrow later used here
+++ /dev/null
-// MutexGuard<Cell<i32>> must not be Sync, that would be unsound.
-use std::sync::Mutex;
-use std::cell::Cell;
-
-fn test_sync<T: Sync>(_t: T) {}
-
-fn main()
-{
- let m = Mutex::new(Cell::new(0i32));
- let guard = m.lock().unwrap();
- test_sync(guard);
- //~^ ERROR `Cell<i32>` cannot be shared between threads safely [E0277]
-}
+++ /dev/null
-error[E0277]: `Cell<i32>` cannot be shared between threads safely
- --> $DIR/mutexguard-sync.rs:11:15
- |
-LL | test_sync(guard);
- | --------- ^^^^^ `Cell<i32>` cannot be shared between threads safely
- | |
- | required by a bound introduced by this call
- |
- = help: the trait `Sync` is not implemented for `Cell<i32>`
- = note: required for `MutexGuard<'_, Cell<i32>>` to implement `Sync`
-note: required by a bound in `test_sync`
- --> $DIR/mutexguard-sync.rs:5:17
- |
-LL | fn test_sync<T: Sync>(_t: T) {}
- | ^^^^ required by this bound in `test_sync`
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0277`.
LL | let x = gimme({
| ----- borrow later used by call
LL | let v = (22,);
+ | - binding `v` declared here
LL | &v
| ^^ borrowed value does not live long enough
LL |
--> $DIR/borrowed-match-issue-45045.rs:12:11
|
LL | let f = &mut e;
- | ------ borrow of `e` occurs here
+ | ------ `e` is borrowed here
LL | let g = f;
LL | match e {
| ^ use of borrowed `e`
error[E0597]: `y` does not live long enough
--> $DIR/capture-ref-in-struct.rs:18:16
|
+LL | let y = 22;
+ | - binding `y` declared here
+...
LL | y: &y,
| ^^ borrowed value does not live long enough
...
--> $DIR/closure-access-spans.rs:23:13
|
LL | let r = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | move || x;
| ^ use of borrowed `x`
LL | r.use_ref();
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/closure-access-spans.rs:29:5
|
+LL | fn closure_move_capture_conflict(mut x: String) {
+ | ----- binding `x` declared here
LL | let r = &x;
| -- borrow of `x` occurs here
LL | || x;
LL | let f = || x;
| -- - borrow occurs due to use in closure
| |
- | borrow of `x` occurs here
+ | `x` is borrowed here
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | f.use_ref();
| ----------- borrow later used here
LL | let f = || x = 0;
| -- - borrow occurs due to use of `x` in closure
| |
- | borrow of `x` occurs here
+ | `x` is borrowed here
LL | let y = x;
| ^ use of borrowed `x`
LL | f.use_ref();
LL | let f = || x = 0;
| -- - borrow occurs due to use in closure
| |
- | borrow of `x` occurs here
+ | `x` is borrowed here
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | f.use_ref();
| ----------- borrow later used here
LL | let f = || *x = 0;
| -- -- borrow occurs due to use in closure
| |
- | borrow of `*x` occurs here
+ | `*x` is borrowed here
LL | *x = 1;
- | ^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^ `*x` is assigned to here but it was already borrowed
LL | f.use_ref();
| ----------- borrow later used here
error[E0597]: `y` does not live long enough
--> $DIR/escape-argument.rs:27:25
|
+LL | let y = 22;
+ | - binding `y` declared here
+LL | let mut closure = expect_sig(|p, y| *p = y);
LL | closure(&mut p, &y);
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `a` does not live long enough
--> $DIR/propagate-approximated-shorter-to-static-comparing-against-free.rs:30:26
|
+LL | let a = 0;
+ | - binding `a` declared here
LL | let cell = Cell::new(&a);
| ^^ borrowed value does not live long enough
...
--> $DIR/closure-use-spans.rs:5:5
|
LL | let y = &x;
- | -- borrow of `x` occurs here
+ | -- `x` is borrowed here
LL | x = 0;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | || *y;
| -- borrow later captured here by closure
--> $DIR/closure-use-spans.rs:11:5
|
LL | let y = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | x = 0;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | || *y = 1;
| -- borrow later captured here by closure
--> $DIR/closure-use-spans.rs:17:5
|
LL | let y = &x;
- | -- borrow of `x` occurs here
+ | -- `x` is borrowed here
LL | x = 0;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | move || *y;
| -- borrow later captured here by closure
error[E0597]: `s` does not live long enough
--> $DIR/do-not-ignore-lifetime-bounds-in-copy-proj.rs:9:18
|
+LL | let s = 2;
+ | - binding `s` declared here
LL | let a = (Foo(&s),);
| ^^ borrowed value does not live long enough
LL | drop(a.0);
error[E0597]: `s` does not live long enough
--> $DIR/do-not-ignore-lifetime-bounds-in-copy.rs:8:17
|
+LL | let s = 2;
+ | - binding `s` declared here
LL | let a = Foo(&s);
| ^^ borrowed value does not live long enough
LL | drop(a);
LL | for ref mut d in v {
| - a temporary with access to the borrow is created here ...
LL | let y = ();
+ | - binding `y` declared here
LL | *d = D(&y);
| ^^ borrowed value does not live long enough
LL | }
--> $DIR/drop-no-may-dangle.rs:18:9
|
LL | let p: WrapMayNotDangle<&usize> = WrapMayNotDangle { value: &v[0] };
- | ----- borrow of `v[_]` occurs here
+ | ----- `v[_]` is borrowed here
...
LL | v[0] += 1;
- | ^^^^^^^^^ assignment to borrowed `v[_]` occurs here
+ | ^^^^^^^^^ `v[_]` is assigned to here but it was already borrowed
...
LL | }
| - borrow might be used here, when `p` is dropped and runs the `Drop` code for type `WrapMayNotDangle`
--> $DIR/drop-no-may-dangle.rs:21:5
|
LL | let p: WrapMayNotDangle<&usize> = WrapMayNotDangle { value: &v[0] };
- | ----- borrow of `v[_]` occurs here
+ | ----- `v[_]` is borrowed here
...
LL | v[0] += 1;
- | ^^^^^^^^^ assignment to borrowed `v[_]` occurs here
+ | ^^^^^^^^^ `v[_]` is assigned to here but it was already borrowed
LL | }
| - borrow might be used here, when `p` is dropped and runs the `Drop` code for type `WrapMayNotDangle`
--> $DIR/guarantor-issue-46974.rs:7:5
|
LL | let t = &mut *s; // this borrow should last for the entire function
- | ------- borrow of `*s` occurs here
+ | ------- `*s` is borrowed here
LL | let x = &t.0;
LL | *s = (2,);
- | ^^^^^^^^^ assignment to borrowed `*s` occurs here
+ | ^^^^^^^^^ `*s` is assigned to here but it was already borrowed
LL | *x
| -- borrow later used here
LL | if { (|| { let bar = foo; bar.take() })(); false } => {},
| ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait
| |
- | move out of `foo` occurs here
+ | `foo` is moved here
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
LL | if let Some(()) = { (|| { let bar = foo; bar.take() })(); None } => {},
| ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait
| |
- | move out of `foo` occurs here
+ | `foo` is moved here
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
LL | (|| { let bar = foo; bar.take() })();
| ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait
| |
- | move out of `foo` occurs here
+ | `foo` is moved here
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
LL | (|| { let bar = foo; bar.take() })();
| ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait
| |
- | move out of `foo` occurs here
+ | `foo` is moved here
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
LL | vecvec[0] += {
| ------
| |
- | _____borrow of `vecvec` occurs here
+ | _____`vecvec` is borrowed here
| |
LL | | vecvec = vec![];
- | | ^^^^^^ assignment to borrowed `vecvec` occurs here
+ | | ^^^^^^ `vecvec` is assigned to here but it was already borrowed
LL | |
LL | | 0
LL | | };
error[E0597]: `a` does not live long enough
--> $DIR/issue-46036.rs:8:24
|
+LL | let a = 3;
+ | - binding `a` declared here
LL | let foo = Foo { x: &a };
| ^^
| |
--> $DIR/issue-48803.rs:10:5
|
LL | let y = &x;
- | -- borrow of `x` occurs here
+ | -- `x` is borrowed here
...
LL | x = "modified";
- | ^^^^^^^^^^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^^^^^^^^^^ `x` is assigned to here but it was already borrowed
LL |
LL | println!("{}", w); // prints "modified"
| - borrow later used here
error[E0597]: `x` does not live long enough
--> $DIR/issue-52534-2.rs:6:13
|
+LL | let x = 32;
+ | - binding `x` declared here
LL | y = &x
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `tmp0` does not live long enough
--> $DIR/issue-52663-trait-object.rs:12:20
|
+LL | let tmp0 = 3;
+ | ---- binding `tmp0` declared here
LL | let tmp1 = &tmp0;
| ^^^^^ borrowed value does not live long enough
LL | Box::new(tmp1) as Box<dyn Foo + '_>
error[E0597]: `_thing1` does not live long enough
--> $DIR/issue-54382-use-span-of-tail-of-block.rs:7:29
|
+LL | let mut _thing1 = D(Box::new("thing1"));
+ | ----------- binding `_thing1` declared here
+...
LL | D("other").next(&_thing1)
| ----------------^^^^^^^^-
| | |
error[E0597]: `counter` does not live long enough
--> $DIR/issue-54556-niconii.rs:22:20
|
+LL | let counter = Mutex;
+ | ------- binding `counter` declared here
+LL |
LL | if let Ok(_) = counter.lock() { }
| ^^^^^^^^^^^^^^
| |
error[E0597]: `stmt` does not live long enough
--> $DIR/issue-54556-stephaneyfx.rs:27:21
|
+LL | let stmt = Statement;
+ | ---- binding `stmt` declared here
LL | let rows = Rows(&stmt);
| ^^^^^ borrowed value does not live long enough
LL | rows.map(|row| row).next()
error[E0597]: `_thing1` does not live long enough
--> $DIR/issue-54556-temps-in-tail-diagnostic.rs:5:11
|
+LL | let mut _thing1 = D(Box::new("thing1"));
+ | ----------- binding `_thing1` declared here
+LL | // D("other").next(&_thing1).end()
LL | D(&_thing1).end()
| --^^^^^^^^-
| | |
--> $DIR/issue-54556-used-vs-unused-tails.rs:10:55
|
LL | { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // suggest `;`
- | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped
|
--> $DIR/issue-54556-used-vs-unused-tails.rs:13:55
|
LL | { { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } } ; // suggest `;`
- | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped
|
--> $DIR/issue-54556-used-vs-unused-tails.rs:16:55
|
LL | { { let mut _t1 = D(Box::new("t1")); D(&_t1).end() }; } // suggest `;`
- | --^^^^- -- ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- -- ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped
|
--> $DIR/issue-54556-used-vs-unused-tails.rs:19:55
|
LL | let _ = { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // suggest `;`
- | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped
|
--> $DIR/issue-54556-used-vs-unused-tails.rs:22:55
|
LL | let _u = { let mut _t1 = D(Box::new("t1")); D(&_t1).unit() } ; // suggest `;`
- | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped
|
--> $DIR/issue-54556-used-vs-unused-tails.rs:25:55
|
LL | let _x = { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // `let x = ...; x`
- | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
= note: the temporary is part of an expression at the end of a block;
consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
--> $DIR/issue-54556-used-vs-unused-tails.rs:30:55
|
LL | _y = { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } ; // `let x = ...; x`
- | --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- - - ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
= note: the temporary is part of an expression at the end of a block;
consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
--> $DIR/issue-54556-used-vs-unused-tails.rs:37:55
|
LL | fn f_local_ref() { let mut _t1 = D(Box::new("t1")); D(&_t1).unit() } // suggest `;`
- | --^^^^- -
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- -
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
help: consider adding semicolon after the expression so its temporaries are dropped sooner, before the local variables declared by the block are dropped
|
--> $DIR/issue-54556-used-vs-unused-tails.rs:40:55
|
LL | fn f() -> String { let mut _t1 = D(Box::new("t1")); D(&_t1).end() } // `let x = ...; x`
- | --^^^^- -
- | | | |
- | | | `_t1` dropped here while still borrowed
- | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
- | | borrowed value does not live long enough
- | a temporary with access to the borrow is created here ...
+ | ------- --^^^^- -
+ | | | | |
+ | | | | `_t1` dropped here while still borrowed
+ | | | | ... and the borrow might be used here, when that temporary is dropped and runs the `Drop` code for type `D`
+ | | | borrowed value does not live long enough
+ | | a temporary with access to the borrow is created here ...
+ | binding `_t1` declared here
|
= note: the temporary is part of an expression at the end of a block;
consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
--> $DIR/issue-54556-wrap-it-up.rs:27:5
|
LL | let wrap = Wrap { p: &mut x };
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
...
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | }
| - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>`
error[E0597]: `a` does not live long enough
--> $DIR/issue-55511.rs:13:28
|
+LL | let a = 22;
+ | - binding `a` declared here
LL | let b = Some(Cell::new(&a));
| ^^ borrowed value does not live long enough
...
--> $DIR/issue-57989.rs:5:5
|
LL | let g = &x;
- | -- borrow of `*x` occurs here
+ | -- `*x` is borrowed here
LL | *x = 0;
- | ^^^^^^ assignment to borrowed `*x` occurs here
+ | ^^^^^^ `*x` is assigned to here but it was already borrowed
LL |
LL | g;
| - borrow later used here
--> $DIR/issue-68550.rs:12:20
|
LL | fn run<'a, A>(x: A)
- | -- lifetime `'a` defined here
+ | -- - binding `x` declared here
+ | |
+ | lifetime `'a` defined here
...
LL | let _: &'a A = &x;
| ----- ^^ borrowed value does not live long enough
error[E0597]: `n` does not live long enough
--> $DIR/issue-69114-static-mut-ty.rs:19:15
|
+LL | let n = 42;
+ | - binding `n` declared here
+LL | unsafe {
LL | BAR = &n;
| ------^^
| | |
error[E0597]: `n` does not live long enough
--> $DIR/issue-69114-static-mut-ty.rs:27:22
|
+LL | let n = 42;
+ | - binding `n` declared here
+LL | unsafe {
LL | BAR_ELIDED = &n;
| -------------^^
| | |
error[E0597]: `n` does not live long enough
--> $DIR/issue-69114-static-ty.rs:7:9
|
+LL | let n = 42;
+ | - binding `n` declared here
LL | FOO(&n);
| ----^^-
| | |
--> $DIR/loan_ends_mid_block_pair.rs:12:5
|
LL | let c = &mut data.0;
- | ----------- borrow of `data.0` occurs here
+ | ----------- `data.0` is borrowed here
LL | capitalize(c);
LL | data.0 = 'e';
- | ^^^^^^^^^^^^ assignment to borrowed `data.0` occurs here
+ | ^^^^^^^^^^^^ `data.0` is assigned to here but it was already borrowed
...
LL | capitalize(c);
| - borrow later used here
error[E0597]: `local` does not live long enough
--> $DIR/local-outlives-static-via-hrtb.rs:24:28
|
+LL | let local = 0;
+ | ----- binding `local` declared here
LL | assert_static_via_hrtb(&local);
| -----------------------^^^^^^-
| | |
error[E0597]: `local` does not live long enough
--> $DIR/local-outlives-static-via-hrtb.rs:25:45
|
+LL | let local = 0;
+ | ----- binding `local` declared here
+LL | assert_static_via_hrtb(&local);
LL | assert_static_via_hrtb_with_assoc_type(&&local);
| ----------------------------------------^^^^^^-
| | |
--> $DIR/match-cfg-fake-edges2.rs:8:5
|
LL | let r = &mut y.1;
- | -------- borrow of `y.1` occurs here
+ | -------- `y.1` is borrowed here
...
LL | match y {
| ^^^^^^^ use of borrowed `y.1`
LL | (|| { let bar = foo; bar.take() })();
| ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait
| |
- | move out of `foo` occurs here
+ | `foo` is moved here
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
LL | (|| { let bar = foo; bar.take() })();
| ^^ --- move occurs because `foo` has type `&mut Option<&i32>`, which does not implement the `Copy` trait
| |
- | move out of `foo` occurs here
+ | `foo` is moved here
|
= note: variables bound in patterns cannot be moved from until after the end of the pattern guard
--> $DIR/match-guards-partially-borrow.rs:225:13
|
LL | s if {
- | - borrow of `t` occurs here
+ | - `t` is borrowed here
LL | t = !t;
- | ^^^^^^ assignment to borrowed `t` occurs here
+ | ^^^^^^ `t` is assigned to here but it was already borrowed
LL | false
LL | } => (), // What value should `s` have in the arm?
| - borrow later used here
--> $DIR/match-guards-partially-borrow.rs:235:13
|
LL | s if let Some(()) = {
- | - borrow of `t` occurs here
+ | - `t` is borrowed here
LL | t = !t;
- | ^^^^^^ assignment to borrowed `t` occurs here
+ | ^^^^^^ `t` is assigned to here but it was already borrowed
LL | None
LL | } => (), // What value should `s` have in the arm?
| - borrow later used here
--> $DIR/match-on-borrowed.rs:47:11
|
LL | E::V(ref mut x, _) => x,
- | --------- borrow of `e.0` occurs here
+ | --------- `e.0` is borrowed here
...
LL | match e { // Don't know that E uses a tag for its discriminant
| ^ use of borrowed `e.0`
--> $DIR/match-on-borrowed.rs:61:11
|
LL | E::V(ref mut x, _) => x,
- | --------- borrow of `f.0` occurs here
+ | --------- `f.0` is borrowed here
...
LL | match f { // Don't know that E uses a tag for its discriminant
| ^ use of borrowed `f.0`
--> $DIR/match-on-borrowed.rs:81:5
|
LL | let x = &mut t;
- | ------ borrow of `t` occurs here
+ | ------ `t` is borrowed here
LL | match t {
| ^^^^^^^ use of borrowed `t`
...
--> $DIR/maybe-initialized-drop-implicit-fragment-drop.rs:17:5
|
LL | let wrap = Wrap { p: &mut x };
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
...
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | // FIXME ^ Should not error in the future with implicit dtors, only manually implemented ones
LL | }
| - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>`
--> $DIR/maybe-initialized-drop-with-fragment.rs:19:5
|
LL | let wrap = Wrap { p: &mut x };
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
...
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | }
| - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>`
--> $DIR/maybe-initialized-drop-with-uninitialized-fragments.rs:20:5
|
LL | let wrap = Wrap { p: &mut x };
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
...
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | // FIXME ^ This currently errors and it should not.
LL | }
| - borrow might be used here, when `foo` is dropped and runs the destructor for type `Foo<'_>`
--> $DIR/maybe-initialized-drop.rs:14:5
|
LL | let wrap = Wrap { p: &mut x };
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | x = 1;
- | ^^^^^ assignment to borrowed `x` occurs here
+ | ^^^^^ `x` is assigned to here but it was already borrowed
LL | }
| - borrow might be used here, when `wrap` is dropped and runs the `Drop` code for type `Wrap`
--> $DIR/polonius-smoke-test.rs:12:13
|
LL | let y = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | let z = x;
| ^ use of borrowed `x`
LL | let w = y;
--> $DIR/polonius-smoke-test.rs:18:13
|
LL | pub fn use_while_mut_fr(x: &mut i32) -> &mut i32 {
- | - let's call the lifetime of this reference `'1`
+ | - - let's call the lifetime of this reference `'1`
+ | |
+ | binding `x` declared here
LL | let y = &mut *x;
| ------- borrow of `*x` occurs here
LL | let z = x;
error[E0505]: cannot move out of `s` because it is borrowed
--> $DIR/polonius-smoke-test.rs:42:5
|
+LL | let s = &mut 1;
+ | - binding `s` declared here
LL | let r = &mut *s;
| ------- borrow of `*s` occurs here
LL | let tmp = foo(&r);
LL | let ptr = {
| --- borrow later stored here
LL | let l = 3;
+ | - binding `l` declared here
LL | let b = &l;
| ^^ borrowed value does not live long enough
...
--> $DIR/reference-carried-through-struct-field.rs:6:5
|
LL | let wrapper = Wrap { w: &mut x };
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | x += 1;
| ^^^^^^ use of borrowed `x`
LL | *wrapper.w += 1;
error[E0597]: `b` does not live long enough
--> $DIR/var-appears-twice.rs:20:38
|
+LL | let b = 44;
+ | - binding `b` declared here
+...
LL | let x: DoubleCell<_> = make_cell(&b);
| ------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-enums.rs:25:48
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | SomeEnum::SomeVariant::<&'static u32> { t: &c };
| ^^
| |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
+ | - binding `c` declared here
LL | SomeEnum::SomeVariant::<&'a u32> { t: &c };
| ^^
| |
error[E0597]: `c` does not live long enough
--> $DIR/adt-brace-structs.rs:23:37
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | SomeStruct::<&'static u32> { t: &c };
| ^^
| |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
+ | - binding `c` declared here
LL | SomeStruct::<&'a u32> { t: &c };
| ^^
| |
error[E0597]: `c` does not live long enough
--> $DIR/adt-nullary-enums.rs:33:41
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | / combine(
LL | | SomeEnum::SomeVariant(Cell::new(&c)),
| | ^^ borrowed value does not live long enough
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
-...
+LL | let c = 66;
+ | - binding `c` declared here
+LL | combine(
LL | SomeEnum::SomeVariant(Cell::new(&c)),
| ----------^^-
| | |
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-enums.rs:28:43
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | SomeEnum::SomeVariant::<&'static u32>(&c);
| ^^
| |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
+ | - binding `c` declared here
LL | SomeEnum::SomeVariant::<&'a u32>(&c);
| ^^
| |
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct-calls.rs:27:7
|
+LL | let c = 66;
+ | - binding `c` declared here
+LL | let f = SomeStruct::<&'static u32>;
LL | f(&c);
| --^^-
| | |
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
-...
+LL | let c = 66;
+ | - binding `c` declared here
+LL | let f = SomeStruct::<&'a u32>;
LL | f(&c);
| --^^-
| | |
error[E0597]: `c` does not live long enough
--> $DIR/adt-tuple-struct.rs:23:32
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | SomeStruct::<&'static u32>(&c);
| ^^
| |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
+ | - binding `c` declared here
LL | SomeStruct::<&'a u32>(&c);
| ^^
| |
error[E0597]: `x` does not live long enough
--> $DIR/cast_static_lifetime.rs:5:19
|
+LL | let x = 22_u32;
+ | - binding `x` declared here
LL | let y: &u32 = (&x) as &'static u32;
| ^^^^----------------
| |
error[E0597]: `x` does not live long enough
--> $DIR/constant-in-expr-inherent-2.rs:23:9
|
+LL | let x = ();
+ | - binding `x` declared here
LL | FUN(&x);
| ----^^-
| | |
error[E0597]: `x` does not live long enough
--> $DIR/constant-in-expr-inherent-2.rs:24:23
|
+LL | let x = ();
+ | - binding `x` declared here
+LL | FUN(&x);
LL | A::ASSOCIATED_FUN(&x);
| ------------------^^-
| | |
error[E0597]: `x` does not live long enough
--> $DIR/constant-in-expr-inherent-2.rs:25:28
|
+LL | let x = ();
+ | - binding `x` declared here
+...
LL | B::ALSO_ASSOCIATED_FUN(&x);
| -----------------------^^-
| | |
error[E0597]: `x` does not live long enough
--> $DIR/constant-in-expr-inherent-2.rs:26:31
|
+LL | let x = ();
+ | - binding `x` declared here
+...
LL | <_>::TRAIT_ASSOCIATED_FUN(&x);
| --------------------------^^-
| | |
error[E0597]: `c` does not live long enough
--> $DIR/fns.rs:23:29
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | some_fn::<&'static u32>(&c);
| ------------------------^^-
| | |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
LL | let c = 66;
+ | - binding `c` declared here
LL | some_fn::<&'a u32>(&c);
| -------------------^^-
| | |
error[E0597]: `c` does not live long enough
--> $DIR/method-call.rs:36:34
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | a.method::<&'static u32>(b, &c);
| -----------------------------^^-
| | |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
+LL | let c = 66;
+ | - binding `c` declared here
LL | a.method::<&'a u32>(b, &c);
| ------------------------^^-
| | |
error[E0597]: `a` does not live long enough
--> $DIR/method-ufcs-1.rs:30:7
|
+LL | let a = 22;
+ | - binding `a` declared here
+...
LL | x(&a, b, c);
| --^^-------
| | |
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
+LL | let a = 22;
+ | - binding `a` declared here
...
LL | <&'a u32 as Bazoom<_>>::method(&a, b, c);
| -------------------------------^^-------
error[E0597]: `a` does not live long enough
--> $DIR/method-ufcs-2.rs:30:7
|
+LL | let a = 22;
+ | - binding `a` declared here
+...
LL | x(&a, b, c);
| --^^-------
| | |
|
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
-...
+LL | let a = 22;
+LL | let b = 44;
+ | - binding `b` declared here
+LL | let c = 66;
LL | <_ as Bazoom<&'a u32>>::method(a, &b, c);
| ----------------------------------^^----
| | |
error[E0597]: `c` does not live long enough
--> $DIR/method-ufcs-3.rs:36:53
|
+LL | let c = 66;
+ | - binding `c` declared here
LL | <_ as Bazoom<_>>::method::<&'static u32>(&a, b, &c);
| ------------------------------------------------^^-
| | |
LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
| -- lifetime `'a` defined here
...
+LL | let c = 66;
+ | - binding `c` declared here
LL | <_ as Bazoom<_>>::method::<&'a u32>(&a, b, &c);
| -------------------------------------------^^-
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
+ | - binding `v` declared here
LL | let x = A::<'a>::new(&v, 22);
| -------------^^-----
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
+ | - binding `v` declared here
LL | let x = A::<'a>::new::<&'a u32>(&v, &v);
| ------------------------^^-----
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
+ | - binding `v` declared here
LL | let x = A::<'a>::new::<&'a u32>(&v, &v);
| ----------------------------^^-
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
+ | - binding `v` declared here
LL | let x = <A<'a>>::new(&v, 22);
| -------------^^-----
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
+ | - binding `v` declared here
LL | let x = <A<'a>>::new::<&'a u32>(&v, &v);
| ------------------------^^-----
| | |
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let v = 22;
+ | - binding `v` declared here
LL | let x = <A<'a>>::new::<&'a u32>(&v, &v);
| ----------------------------^^-
| | |
error[E0597]: `a` does not live long enough
--> $DIR/normalization.rs:10:31
|
+LL | let a = 22;
+ | - binding `a` declared here
LL | let _: <() as Foo>::Out = &a;
| ---------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `a` does not live long enough
--> $DIR/normalization.rs:13:40
|
+LL | let a = 22;
+ | - binding `a` declared here
LL | let _: <&'static () as Foo>::Out = &a;
| ------------------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_brace_enum_variant.rs:7:33
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo::Bar { field: &y };
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_brace_enum_variant.rs:14:33
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo::Bar { field: &y };
| ^^ borrowed value does not live long enough
...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_brace_struct.rs:5:28
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo { field: &y };
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_brace_struct.rs:12:28
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo { field: &y };
| ^^ borrowed value does not live long enough
...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_tuple_enum_variant.rs:7:24
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo::Bar(&y);
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_tuple_enum_variant.rs:14:24
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo::Bar(&y);
| ^^ borrowed value does not live long enough
...
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_tuple_struct.rs:5:19
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo(&y);
| ^^ borrowed value does not live long enough
LL |
error[E0597]: `y` does not live long enough
--> $DIR/pattern_substs_on_tuple_struct.rs:12:19
|
+LL | let y = 22;
+ | - binding `y` declared here
LL | let foo = Foo(&y);
| ^^ borrowed value does not live long enough
...
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:6:9
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let y: &'static u32;
| ------------ type annotation requires that `x` is borrowed for `'static`
LL | y = &x;
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:14:9
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let (y, z): (&'static u32, &'static u32);
| ---------------------------- type annotation requires that `x` is borrowed for `'static`
LL | y = &x;
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:20:13
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let y = &x;
| ^^ borrowed value does not live long enough
LL | let ref z: &'static u32 = y;
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:39:9
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let Single { value: y }: Single<&'static u32>;
| -------------------- type annotation requires that `x` is borrowed for `'static`
LL | y = &x;
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:51:10
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let Single2 { value: mut _y }: Single2<StaticU32>;
| ------------------ type annotation requires that `x` is borrowed for `'static`
LL | _y = &x;
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:56:27
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let y: &'static u32 = &x;
| ------------ ^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:61:27
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let _: &'static u32 = &x;
| ------------ ^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:75:40
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let (_, _): (&'static u32, u32) = (&x, 44);
| ------------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:80:40
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let (y, _): (&'static u32, u32) = (&x, 44);
| ------------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:85:69
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let Single { value: y }: Single<&'static u32> = Single { value: &x };
| -------------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:90:69
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let Single { value: _ }: Single<&'static u32> = Single { value: &x };
| -------------------- ^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/patterns.rs:98:17
|
+LL | let x = 22;
+ | - binding `x` declared here
LL | let Double { value1: _, value2: _ }: Double<&'static u32> = Double {
| -------------------- type annotation requires that `x` is borrowed for `'static`
LL | value1: &x,
LL | fn foo<'a>() {
| -- lifetime `'a` defined here
LL | let x = 0;
+ | - binding `x` declared here
LL | let f = &drop::<&'a i32>;
| ---------------- assignment requires that `x` is borrowed for `'a`
LL | f(&x);
error[E0597]: `x` does not live long enough
--> $DIR/type_ascription_static_lifetime.rs:6:33
|
+LL | let x = 22_u32;
+ | - binding `x` declared here
LL | let y: &u32 = type_ascribe!(&x, &'static u32);
| --------------^^---------------
| | |
+++ /dev/null
-// Issue #66530: We would ICE if someone compiled with `-o /dev/null`,
-// because we would try to generate auxiliary files in `/dev/` (which
-// at least the OS X file system rejects).
-//
-// An attempt to `-o` into a directory we cannot write into should indeed
-// be an error; but not an ICE.
-//
-// However, some folks run tests as root, which can write `/dev/` and end
-// up clobbering `/dev/null`. Instead we'll use a non-existent path, which
-// also used to ICE, but even root can't magically write there.
-
-// compile-flags: -o /does-not-exist/output
-
-// The error-pattern check occurs *before* normalization, and the error patterns
-// are wildly different between build environments. So this is a cop-out (and we
-// rely on the checking of the normalized stderr output as our actual
-// "verification" of the diagnostic).
-
-// error-pattern: error
-
-// On Mac OS X, we get an error like the below
-// normalize-stderr-test "failed to write bytecode to /does-not-exist/output.non_ice_error_on_worker_io_fail.*" -> "io error modifying /does-not-exist/"
-
-// On Linux, we get an error like the below
-// normalize-stderr-test "couldn't create a temp dir.*" -> "io error modifying /does-not-exist/"
-
-// ignore-windows - this is a unix-specific test
-// ignore-emscripten - the file-system issues do not replicate here
-// ignore-wasm - the file-system issues do not replicate here
-// ignore-arm - the file-system issues do not replicate here, at least on armhf-gnu
-
-#![crate_type="lib"]
-
-#![cfg_attr(not(feature = "std"), no_std)]
-pub mod task {
- pub mod __internal {
- use crate::task::Waker;
- }
- pub use core::task::Waker;
-}
+++ /dev/null
-warning: ignoring --out-dir flag due to -o flag
-
-error: io error modifying /does-not-exist/
-
-error: aborting due to previous error; 1 warning emitted
-
--- /dev/null
+fn foo(x: bool | i32) -> i32 | f64 {
+//~^ ERROR anonymous enums are not supported
+//~| ERROR anonymous enums are not supported
+ match x {
+ x: i32 => x, //~ ERROR expected
+ true => 42.,
+ false => 0.333,
+ }
+}
+
+fn main() {
+ match foo(true) {
+ 42: i32 => (), //~ ERROR expected
+ _: f64 => (), //~ ERROR expected
+ x: i32 => (), //~ ERROR expected
+ }
+}
--- /dev/null
+error: anonymous enums are not supported
+ --> $DIR/anon-enums.rs:1:16
+ |
+LL | fn foo(x: bool | i32) -> i32 | f64 {
+ | ---- ^ ---
+ |
+ = help: create a named `enum` and use it here instead:
+ enum Name {
+ Variant1(bool),
+ Variant2(i32),
+ }
+
+error: anonymous enums are not supported
+ --> $DIR/anon-enums.rs:1:30
+ |
+LL | fn foo(x: bool | i32) -> i32 | f64 {
+ | --- ^ ---
+ |
+ = help: create a named `enum` and use it here instead:
+ enum Name {
+ Variant1(i32),
+ Variant2(f64),
+ }
+
+error: expected one of `@` or `|`, found `:`
+ --> $DIR/anon-enums.rs:5:10
+ |
+LL | x: i32 => x,
+ | ^ --- specifying the type of a pattern isn't supported
+ | |
+ | expected one of `@` or `|`
+ |
+help: maybe write a path separator here
+ |
+LL | x::i32 => x,
+ | ~~
+
+error: expected one of `...`, `..=`, `..`, or `|`, found `:`
+ --> $DIR/anon-enums.rs:13:11
+ |
+LL | 42: i32 => (),
+ | ^ --- specifying the type of a pattern isn't supported
+ | |
+ | expected one of `...`, `..=`, `..`, or `|`
+
+error: expected `|`, found `:`
+ --> $DIR/anon-enums.rs:14:10
+ |
+LL | _: f64 => (),
+ | ^ --- specifying the type of a pattern isn't supported
+ | |
+ | expected `|`
+
+error: expected one of `@` or `|`, found `:`
+ --> $DIR/anon-enums.rs:15:10
+ |
+LL | x: i32 => (),
+ | ^ --- specifying the type of a pattern isn't supported
+ | |
+ | expected one of `@` or `|`
+ |
+help: maybe write a path separator here
+ |
+LL | x::i32 => (),
+ | ~~
+
+error: aborting due to 6 previous errors
+
--- /dev/null
+// build-pass
+macro_rules! check_ty {
+ ($Z:ty) => { compile_error!("triggered"); };
+ ($X:ty | $Y:ty) => { $X };
+}
+
+macro_rules! check {
+ ($Z:ty) => { compile_error!("triggered"); };
+ ($X:ty | $Y:ty) => { };
+}
+
+check! { i32 | u8 }
+
+fn foo(x: check_ty! { i32 | u8 }) -> check_ty! { i32 | u8 } {
+ x
+}
+fn main() {
+ let x: check_ty! { i32 | u8 } = 42;
+ let _: check_ty! { i32 | u8 } = foo(x);
+}
Foo:Bar::Baz => {}
//~^ ERROR: expected one of
//~| HELP: maybe write a path separator here
- //~| ERROR: failed to resolve: `Bar` is a variant, not a module
}
match myfoo {
Foo::Bar => {}
--> $DIR/issue-87086-colon-path-sep.rs:17:12
|
LL | Foo:Bar => {}
- | ^
+ | ^--- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | Foo::Bar => {}
+ | ~~
error: expected one of `!`, `(`, `...`, `..=`, `..`, `::`, `{`, or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:23:17
|
LL | qux::Foo:Bar => {}
- | ^
+ | ^--- specifying the type of a pattern isn't supported
| |
| expected one of 8 possible tokens
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | qux::Foo::Bar => {}
+ | ~~
error: expected one of `@` or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:29:12
|
LL | qux:Foo::Baz => {}
- | ^
+ | ^-------- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | qux::Foo::Baz => {}
+ | ~~
error: expected one of `@` or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:35:12
|
LL | qux: Foo::Baz if true => {}
- | ^
+ | ^ -------- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | qux::Foo::Baz if true => {}
+ | ~~
error: expected one of `@` or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:40:15
|
LL | if let Foo:Bar = f() {
- | ^
+ | ^--- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | if let Foo::Bar = f() {
+ | ~~
error: expected one of `@` or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:48:16
|
LL | ref qux: Foo::Baz => {}
- | ^
+ | ^ -------- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | ref qux::Foo::Baz => {}
+ | ~~
error: expected one of `@` or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:57:16
|
LL | mut qux: Foo::Baz => {}
- | ^
+ | ^ -------- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | mut qux::Foo::Baz => {}
+ | ~~
error: expected one of `@` or `|`, found `:`
--> $DIR/issue-87086-colon-path-sep.rs:68:12
|
LL | Foo:Bar::Baz => {}
- | ^
+ | ^-------- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
+ |
+help: maybe write a path separator here
+ |
+LL | Foo::Bar::Baz => {}
+ | ~~
error: expected one of `@` or `|`, found `:`
- --> $DIR/issue-87086-colon-path-sep.rs:75:12
+ --> $DIR/issue-87086-colon-path-sep.rs:74:12
|
LL | Foo:Bar => {}
- | ^
+ | ^--- specifying the type of a pattern isn't supported
| |
| expected one of `@` or `|`
- | help: maybe write a path separator here: `::`
-
-error[E0433]: failed to resolve: `Bar` is a variant, not a module
- --> $DIR/issue-87086-colon-path-sep.rs:68:13
|
-LL | Foo:Bar::Baz => {}
- | ^^^ `Bar` is a variant, not a module
+help: maybe write a path separator here
+ |
+LL | Foo::Bar => {}
+ | ~~
-error: aborting due to 10 previous errors
+error: aborting due to 9 previous errors
-For more information about this error, try `rustc --explain E0433`.
LL | Some(ref _y @ _z) => {}
| ------^^^--
| | |
- | | value moved into `_z` here
- | value borrowed, by `_y`, here
+ | | value is moved into `_z` here
+ | value is borrowed by `_y` here
error: borrow of moved value
--> $DIR/bind-by-move-neither-can-live-while-the-other-survives-1.rs:19:14
LL | Some(ref mut _y @ _z) => {}
| ----------^^^--
| | |
- | | value moved into `_z` here
- | value borrowed, by `_y`, here
+ | | value is moved into `_z` here
+ | value is mutably borrowed by `_y` here
error: borrow of moved value
--> $DIR/bind-by-move-neither-can-live-while-the-other-survives-1.rs:33:14
LL | let ref a @ box b = Box::new(NC);
| -----^^^^^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-at-and-box.rs:34:9
LL | let ref a @ box ref mut b = Box::new(nc());
| -----^^^^^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-at-and-box.rs:36:9
LL | let ref a @ box ref mut b = Box::new(NC);
| -----^^^^^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-at-and-box.rs:38:9
LL | let ref a @ box ref mut b = Box::new(NC);
| -----^^^^^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-at-and-box.rs:42:9
LL | let ref a @ box ref mut b = Box::new(NC);
| -----^^^^^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-at-and-box.rs:48:9
LL | let ref mut a @ box ref b = Box::new(NC);
| ---------^^^^^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-at-and-box.rs:62:9
LL | ref mut a @ box ref b => {
| ---------^^^^^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-at-and-box.rs:54:11
LL | fn f5(ref mut a @ box ref b: Box<NC>) {
| ---------^^^^^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error[E0382]: borrow of moved value
--> $DIR/borrowck-pat-at-and-box.rs:31:9
LL | let ref a @ b = U;
| -----^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:26:9
LL | let ref a @ (ref b @ mut c, ref d @ e) = (U, U);
| -----^^^^^^^^^^^^-----^^^^^^^^^^-^
| | | |
- | | | value moved into `e` here
- | | value moved into `c` here
- | value borrowed, by `a`, here
+ | | | value is moved into `e` here
+ | | value is moved into `c` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:26:18
LL | let ref a @ (ref b @ mut c, ref d @ e) = (U, U);
| -----^^^-----
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:26:33
LL | let ref a @ (ref b @ mut c, ref d @ e) = (U, U);
| -----^^^-
| | |
- | | value moved into `e` here
- | value borrowed, by `d`, here
+ | | value is moved into `e` here
+ | value is borrowed by `d` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:30:9
LL | let ref mut a @ [b, mut c] = [U, U];
| ---------^^^^-^^-----^
| | | |
- | | | value moved into `c` here
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | | value is moved into `c` here
+ | | value is moved into `b` here
+ | value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:33:9
LL | let ref a @ b = u();
| -----^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:36:9
LL | let ref a @ (ref b @ mut c, ref d @ e) = (u(), u());
| -----^^^^^^^^^^^^-----^^^^^^^^^^-^
| | | |
- | | | value moved into `e` here
- | | value moved into `c` here
- | value borrowed, by `a`, here
+ | | | value is moved into `e` here
+ | | value is moved into `c` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:36:18
LL | let ref a @ (ref b @ mut c, ref d @ e) = (u(), u());
| -----^^^-----
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:36:33
LL | let ref a @ (ref b @ mut c, ref d @ e) = (u(), u());
| -----^^^-
| | |
- | | value moved into `e` here
- | value borrowed, by `d`, here
+ | | value is moved into `e` here
+ | value is borrowed by `d` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:42:9
LL | let ref mut a @ [b, mut c] = [u(), u()];
| ---------^^^^-^^-----^
| | | |
- | | | value moved into `c` here
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | | value is moved into `c` here
+ | | value is moved into `b` here
+ | value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:47:9
LL | ref a @ Some(b) => {}
| -----^^^^^^^^-^
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:52:9
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^^^^^^^^^^^^^^^-----^^^^^^^^^^-^^
| | | |
- | | | value moved into `e` here
- | | value moved into `c` here
- | value borrowed, by `a`, here
+ | | | value is moved into `e` here
+ | | value is moved into `c` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:52:23
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^-----
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:52:38
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^-
| | |
- | | value moved into `e` here
- | value borrowed, by `d`, here
+ | | value is moved into `e` here
+ | value is borrowed by `d` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:59:9
LL | ref mut a @ Some([b, mut c]) => {}
| ---------^^^^^^^^^-^^-----^^
| | | |
- | | | value moved into `c` here
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | | value is moved into `c` here
+ | | value is moved into `b` here
+ | value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:64:9
LL | ref a @ Some(b) => {}
| -----^^^^^^^^-^
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:69:9
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^^^^^^^^^^^^^^^-----^^^^^^^^^^-^^
| | | |
- | | | value moved into `e` here
- | | value moved into `c` here
- | value borrowed, by `a`, here
+ | | | value is moved into `e` here
+ | | value is moved into `c` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:69:23
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^-----
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:69:38
LL | ref a @ Some((ref b @ mut c, ref d @ e)) => {}
| -----^^^-
| | |
- | | value moved into `e` here
- | value borrowed, by `d`, here
+ | | value is moved into `e` here
+ | value is borrowed by `d` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:78:9
LL | ref mut a @ Some([b, mut c]) => {}
| ---------^^^^^^^^^-^^-----^^
| | | |
- | | | value moved into `c` here
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | | value is moved into `c` here
+ | | value is moved into `b` here
+ | value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:11:11
LL | fn f1(ref a @ b: U) {}
| -----^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:11
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| -----^^^^^^^^^^^^-----^^^^^^^^^^-^
| | | |
- | | | value moved into `e` here
- | | value moved into `c` here
- | value borrowed, by `a`, here
+ | | | value is moved into `e` here
+ | | value is moved into `c` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:20
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| -----^^^-----
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is borrowed by `b` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:14:35
LL | fn f2(ref a @ (ref b @ mut c, ref d @ e): (U, U)) {}
| -----^^^-
| | |
- | | value moved into `e` here
- | value borrowed, by `d`, here
+ | | value is moved into `e` here
+ | value is borrowed by `d` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-by-move-and-ref.rs:20:11
LL | fn f3(ref mut a @ [b, mut c]: [U; 2]) {}
| ---------^^^^-^^-----^
| | | |
- | | | value moved into `c` here
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | | value is moved into `c` here
+ | | value is moved into `b` here
+ | value is mutably borrowed by `a` here
error[E0382]: borrow of partially moved value
--> $DIR/borrowck-pat-by-move-and-ref.rs:30:9
LL | ref mut z @ &mut Some(ref a) => {
| ---------^^^^^^^^^^^^^-----^
| | |
- | | immutable borrow, by `a`, occurs here
- | mutable borrow, by `z`, occurs here
+ | | value is borrowed by `a` here
+ | value is mutably borrowed by `z` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:33:9
LL | let ref mut a @ (ref b @ ref mut c) = u(); // sub-in-sub
| ---------^^^^-----------------^
| | | |
- | | | another mutable borrow, by `c`, occurs here
- | | also borrowed as immutable, by `b`, here
- | first mutable borrow, by `a`, occurs here
+ | | | value is mutably borrowed by `c` here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:33:22
LL | let ref mut a @ (ref b @ ref mut c) = u(); // sub-in-sub
| -----^^^---------
| | |
- | | mutable borrow, by `c`, occurs here
- | immutable borrow, by `b`, occurs here
+ | | value is mutably borrowed by `c` here
+ | value is borrowed by `b` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:37:9
LL | let ref a @ ref mut b = U;
| -----^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:39:9
LL | let ref mut a @ ref b = U;
| ---------^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:41:9
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
- | | | mutable borrow, by `c`, occurs here
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | | value is mutably borrowed by `c` here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:43:9
LL | let ref mut a @ (ref b, ref c) = (U, U);
| ---------^^^^-----^^-----^
| | | |
- | | | immutable borrow, by `c`, occurs here
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | | value is borrowed by `c` here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:46:9
LL | let ref mut a @ ref b = u();
| ---------^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:51:9
LL | let ref a @ ref mut b = u();
| -----^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:57:9
LL | let ref mut a @ ref b = U;
| ---------^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:61:9
LL | let ref a @ ref mut b = U;
| -----^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:67:9
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) => {
| ---------^^^^^^-----^
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:67:33
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) => {
| ---------^^^^^^^-----^
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:76:9
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| -----^^^^^^---------^
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:76:33
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) => {
| -----^^^^^^^---------^
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:87:9
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| -----^^^^^^---------^
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:87:33
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { *b = U; false } => {}
| -----^^^^^^^---------^
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:94:9
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ---------^^^^^^-----^
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:94:33
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { *a = Err(U); false } => {}
| ---------^^^^^^^-----^
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:101:9
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| -----^^^^^^---------^
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:101:33
LL | ref a @ Ok(ref mut b) | ref a @ Err(ref mut b) if { drop(b); false } => {}
| -----^^^^^^^---------^
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:109:9
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ---------^^^^^^-----^
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:109:33
LL | ref mut a @ Ok(ref b) | ref mut a @ Err(ref b) if { drop(a); false } => {}
| ---------^^^^^^^-----^
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:117:9
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
- | | | mutable borrow, by `c`, occurs here
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | | value is mutably borrowed by `c` here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:123:9
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
- | | | mutable borrow, by `c`, occurs here
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | | value is mutably borrowed by `c` here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:129:9
LL | let ref a @ (ref mut b, ref mut c) = (U, U);
| -----^^^^---------^^---------^
| | | |
- | | | mutable borrow, by `c`, occurs here
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | | value is mutably borrowed by `c` here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:134:9
LL | let ref mut a @ (ref b, ref c) = (U, U);
| ---------^^^^-----^^-----^
| | | |
- | | | immutable borrow, by `c`, occurs here
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | | value is borrowed by `c` here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:22:11
LL | fn f1(ref a @ ref mut b: U) {}
| -----^^^---------
| | |
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:24:11
LL | fn f2(ref mut a @ ref b: U) {}
| ---------^^^-----
| | |
- | | immutable borrow, by `b`, occurs here
- | mutable borrow, by `a`, occurs here
+ | | value is borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:26:11
LL | fn f3(ref a @ [ref b, ref mut mid @ .., ref c]: [U; 4]) {}
| -----^^^^^^^^^^^----------------^^^^^^^^
| | |
- | | mutable borrow, by `mid`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `mid` here
+ | value is borrowed by `a` here
error: cannot borrow value as mutable because it is also borrowed as immutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:22
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| -----^^^-------------
| | | |
- | | | also moved into `c` here
- | | mutable borrow, by `b`, occurs here
- | immutable borrow, by `a`, occurs here
+ | | | value is moved into `c` here
+ | | value is mutably borrowed by `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:28:30
LL | fn f4_also_moved(ref a @ ref mut b @ c: U) {}
| ---------^^^-
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is mutably borrowed by `b` here
error[E0502]: cannot borrow value as immutable because it is also borrowed as mutable
--> $DIR/borrowck-pat-ref-mut-and-ref.rs:8:31
LL | let ref mut a @ ref mut b = U;
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:29:9
LL | let ref mut a @ ref mut b = U;
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:33:9
LL | let ref mut a @ ref mut b = U;
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:36:9
LL | let ref mut a @ ref mut b = U;
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:39:9
LL | let ref mut a @ ref mut b = U;
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:44:9
LL | let ref mut a @ (
| ^--------
| |
- | _________first mutable borrow, by `a`, occurs here
+ | _________value is mutably borrowed by `a` here
| |
LL | |
LL | | ref mut b,
- | | --------- another mutable borrow, by `b`, occurs here
+ | | --------- value is mutably borrowed by `b` here
LL | | [
LL | | ref mut c,
- | | --------- another mutable borrow, by `c`, occurs here
+ | | --------- value is mutably borrowed by `c` here
LL | | ref mut d,
- | | --------- another mutable borrow, by `d`, occurs here
+ | | --------- value is mutably borrowed by `d` here
LL | | ref e,
- | | ----- also borrowed as immutable, by `e`, here
+ | | ----- value is borrowed by `e` here
LL | | ]
LL | | ) = (U, [U, U, U]);
| |_____^
LL | let ref mut a @ (
| ^--------
| |
- | _________first mutable borrow, by `a`, occurs here
+ | _________value is mutably borrowed by `a` here
| |
LL | |
LL | | ref mut b,
- | | --------- another mutable borrow, by `b`, occurs here
+ | | --------- value is mutably borrowed by `b` here
LL | | [
LL | | ref mut c,
- | | --------- another mutable borrow, by `c`, occurs here
+ | | --------- value is mutably borrowed by `c` here
LL | | ref mut d,
- | | --------- another mutable borrow, by `d`, occurs here
+ | | --------- value is mutably borrowed by `d` here
LL | | ref e,
- | | ----- also borrowed as immutable, by `e`, here
+ | | ----- value is borrowed by `e` here
LL | | ]
LL | | ) = (u(), [u(), u(), u()]);
| |_________^
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:76:37
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:82:9
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:82:37
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:89:9
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:89:37
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:101:9
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:101:37
LL | ref mut a @ Ok(ref mut b) | ref mut a @ Err(ref mut b) => {
| ---------^^^^^^^---------^
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:8:11
LL | fn f1(ref mut a @ ref mut b: U) {}
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:10:11
LL | fn f2(ref mut a @ ref mut b: U) {}
| ---------^^^---------
| | |
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:13:9
LL | ref mut a @ [
| ^--------
| |
- | _________first mutable borrow, by `a`, occurs here
+ | _________value is mutably borrowed by `a` here
| |
LL | |
LL | | [ref b @ .., _],
- | | ---------- also borrowed as immutable, by `b`, here
+ | | ---------- value is borrowed by `b` here
LL | | [_, ref mut mid @ ..],
- | | ---------------- another mutable borrow, by `mid`, occurs here
+ | | ---------------- value is mutably borrowed by `mid` here
LL | | ..,
LL | | [..],
LL | | ] : [[U; 4]; 5]
LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| ---------^^^-------------
| | | |
- | | | also moved into `c` here
- | | another mutable borrow, by `b`, occurs here
- | first mutable borrow, by `a`, occurs here
+ | | | value is moved into `c` here
+ | | value is mutably borrowed by `b` here
+ | value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/borrowck-pat-ref-mut-twice.rs:21:34
LL | fn f4_also_moved(ref mut a @ ref mut b @ c: U) {}
| ---------^^^-
| | |
- | | value moved into `c` here
- | value borrowed, by `b`, here
+ | | value is moved into `c` here
+ | value is mutably borrowed by `b` here
error[E0499]: cannot borrow value as mutable more than once at a time
--> $DIR/borrowck-pat-ref-mut-twice.rs:29:9
LL | let ref a @ b = NotCopy;
| -----^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/default-binding-modes-both-sides-independent.rs:29:9
LL | let ref mut a @ b = NotCopy;
| ---------^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is mutably borrowed by `a` here
error: cannot move out of value because it is borrowed
--> $DIR/default-binding-modes-both-sides-independent.rs:34:12
LL | Ok(ref a @ b) | Err(b @ ref a) => {
| -----^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error: borrow of moved value
--> $DIR/default-binding-modes-both-sides-independent.rs:34:29
LL | ref a @ b => {
| -----^^^-
| | |
- | | value moved into `b` here
- | value borrowed, by `a`, here
+ | | value is moved into `b` here
+ | value is borrowed by `a` here
error[E0382]: borrow of moved value
--> $DIR/default-binding-modes-both-sides-independent.rs:29:9
error[E0505]: cannot move out of `arr[..]` because it is borrowed
--> $DIR/borrowck-move-ref-pattern.rs:8:24
|
+LL | let mut arr = [U, U, U, U, U];
+ | ------- binding `arr` declared here
LL | let hold_all = &arr;
| ---- borrow of `arr` occurs here
LL | let [ref _x0_hold, _x1, ref xs_hold @ ..] = arr;
--- /dev/null
+// check-pass
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+#![allow(private_in_public)]
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+#[proc_macro]
+pub fn foo<T>(t: T) -> TokenStream {
+ TokenStream::new()
+}
+
+trait Project {
+ type Assoc;
+}
+
+impl Project for () {
+ type Assoc = TokenStream;
+}
+
+#[proc_macro]
+pub fn uwu(_input: <() as Project>::Assoc) -> <() as Project>::Assoc {
+ TokenStream::new()
+}
--- /dev/null
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+#![allow(warnings)]
+
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+#[proc_macro]
+pub extern "C" fn abi(a: TokenStream) -> TokenStream {
+ //~^ ERROR proc macro functions may not be `extern "C"`
+ a
+}
+
+#[proc_macro]
+pub extern "system" fn abi2(a: TokenStream) -> TokenStream {
+ //~^ ERROR proc macro functions may not be `extern "system"`
+ a
+}
+
+#[proc_macro]
+pub extern fn abi3(a: TokenStream) -> TokenStream {
+ //~^ ERROR proc macro functions may not be `extern "C"`
+ a
+}
+
+#[proc_macro]
+pub extern "Rust" fn abi4(a: TokenStream) -> TokenStream {
+ a
+}
--- /dev/null
+error: proc macro functions may not be `extern "C"`
+ --> $DIR/proc-macro-abi.rs:11:1
+ |
+LL | pub extern "C" fn abi(a: TokenStream) -> TokenStream {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: proc macro functions may not be `extern "system"`
+ --> $DIR/proc-macro-abi.rs:17:1
+ |
+LL | pub extern "system" fn abi2(a: TokenStream) -> TokenStream {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: proc macro functions may not be `extern "C"`
+ --> $DIR/proc-macro-abi.rs:23:1
+ |
+LL | pub extern fn abi3(a: TokenStream) -> TokenStream {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 3 previous errors
+
--- /dev/null
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+#[proc_macro_attribute]
+pub fn bad_input(input: String) -> TokenStream {
+ //~^ ERROR mismatched attribute proc macro signature
+ ::proc_macro::TokenStream::new()
+}
+
+#[proc_macro_attribute]
+pub fn bad_output(input: TokenStream) -> String {
+ //~^ ERROR mismatched attribute proc macro signature
+ //~| ERROR mismatched attribute proc macro signature
+ String::from("blah")
+}
+
+#[proc_macro_attribute]
+pub fn bad_everything(input: String) -> String {
+ //~^ ERROR mismatched attribute proc macro signature
+ //~| ERROR mismatched attribute proc macro signature
+ input
+}
+
+#[proc_macro_attribute]
+pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream {
+ //~^ ERROR mismatched attribute proc macro signature
+}
--- /dev/null
+error: mismatched attribute proc macro signature
+ --> $DIR/signature-proc-macro-attribute.rs:10:1
+ |
+LL | pub fn bad_input(input: String) -> TokenStream {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attribute proc macro must have two arguments of type `proc_macro::TokenStream`
+
+error: mismatched attribute proc macro signature
+ --> $DIR/signature-proc-macro-attribute.rs:16:42
+ |
+LL | pub fn bad_output(input: TokenStream) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: attribute proc macros must have a signature of `fn(TokenStream, TokenStream) -> TokenStream`
+
+error: mismatched attribute proc macro signature
+ --> $DIR/signature-proc-macro-attribute.rs:16:1
+ |
+LL | pub fn bad_output(input: TokenStream) -> String {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attribute proc macro must have two arguments of type `proc_macro::TokenStream`
+
+error: mismatched attribute proc macro signature
+ --> $DIR/signature-proc-macro-attribute.rs:23:41
+ |
+LL | pub fn bad_everything(input: String) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: attribute proc macros must have a signature of `fn(TokenStream, TokenStream) -> TokenStream`
+
+error: mismatched attribute proc macro signature
+ --> $DIR/signature-proc-macro-attribute.rs:23:1
+ |
+LL | pub fn bad_everything(input: String) -> String {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ attribute proc macro must have two arguments of type `proc_macro::TokenStream`
+
+error: mismatched attribute proc macro signature
+ --> $DIR/signature-proc-macro-attribute.rs:30:49
+ |
+LL | pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream {
+ | ^^^^^^^^^ found unexpected argument
+
+error: aborting due to 6 previous errors
+
--- /dev/null
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+#[proc_macro_derive(Blah)]
+pub fn bad_input(input: String) -> TokenStream {
+ //~^ ERROR mismatched derive proc macro signature
+ TokenStream::new()
+}
+
+#[proc_macro_derive(Bleh)]
+pub fn bad_output(input: TokenStream) -> String {
+ //~^ ERROR mismatched derive proc macro signature
+ String::from("blah")
+}
+
+#[proc_macro_derive(Bluh)]
+pub fn bad_everything(input: String) -> String {
+ //~^ ERROR mismatched derive proc macro signature
+ //~| ERROR mismatched derive proc macro signature
+ input
+}
+
+#[proc_macro_derive(Blih)]
+pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream {
+ //~^ ERROR mismatched derive proc macro signature
+}
--- /dev/null
+error: mismatched derive proc macro signature
+ --> $DIR/signature-proc-macro-derive.rs:10:25
+ |
+LL | pub fn bad_input(input: String) -> TokenStream {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature-proc-macro-derive.rs:16:42
+ |
+LL | pub fn bad_output(input: TokenStream) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature-proc-macro-derive.rs:22:41
+ |
+LL | pub fn bad_everything(input: String) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature-proc-macro-derive.rs:22:30
+ |
+LL | pub fn bad_everything(input: String) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature-proc-macro-derive.rs:29:33
+ |
+LL | pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^ found unexpected arguments
+
+error: aborting due to 5 previous errors
+
--- /dev/null
+// force-host
+// no-prefer-dynamic
+
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::TokenStream;
+
+#[proc_macro]
+pub fn bad_input(input: String) -> TokenStream {
+ //~^ ERROR mismatched function-like proc macro signature
+ ::proc_macro::TokenStream::new()
+}
+
+#[proc_macro]
+pub fn bad_output(input: TokenStream) -> String {
+ //~^ ERROR mismatched function-like proc macro signature
+ String::from("blah")
+}
+
+#[proc_macro]
+pub fn bad_everything(input: String) -> String {
+ //~^ ERROR mismatched function-like proc macro signature
+ //~| ERROR mismatched function-like proc macro signature
+ input
+}
+
+#[proc_macro]
+pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream {
+ //~^ ERROR mismatched function-like proc macro signature
+}
--- /dev/null
+error: mismatched function-like proc macro signature
+ --> $DIR/signature-proc-macro.rs:10:25
+ |
+LL | pub fn bad_input(input: String) -> TokenStream {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched function-like proc macro signature
+ --> $DIR/signature-proc-macro.rs:16:42
+ |
+LL | pub fn bad_output(input: TokenStream) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched function-like proc macro signature
+ --> $DIR/signature-proc-macro.rs:22:41
+ |
+LL | pub fn bad_everything(input: String) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched function-like proc macro signature
+ --> $DIR/signature-proc-macro.rs:22:30
+ |
+LL | pub fn bad_everything(input: String) -> String {
+ | ^^^^^^ found std::string::String, expected type `proc_macro::TokenStream`
+ |
+ = note: function-like proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched function-like proc macro signature
+ --> $DIR/signature-proc-macro.rs:29:33
+ |
+LL | pub fn too_many(a: TokenStream, b: TokenStream, c: String) -> TokenStream {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^ found unexpected arguments
+
+error: aborting due to 5 previous errors
+
#[proc_macro_derive(A)]
pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
- //~^ ERROR: expected a `Fn<(proc_macro::TokenStream,)>` closure, found `unsafe extern "C" fn
+ //~^ ERROR: mismatched derive proc macro signature
+ //~| mismatched derive proc macro signature
+ //~| mismatched derive proc macro signature
+ //~| proc macro functions may not be `extern
+ //~| proc macro functions may not be `unsafe
loop {}
}
-error[E0277]: expected a `Fn<(proc_macro::TokenStream,)>` closure, found `unsafe extern "C" fn(i32, u32) -> u32 {foo}`
+error: proc macro functions may not be `extern "C"`
--> $DIR/signature.rs:10:1
|
-LL | / pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
-LL | |
-LL | | loop {}
-LL | | }
- | | ^
- | | |
- | |_call the function in a closure: `|| unsafe { /* code */ }`
- | required by a bound introduced by this call
+LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: proc macro functions may not be `unsafe`
+ --> $DIR/signature.rs:10:1
+ |
+LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature.rs:10:49
+ |
+LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
+ | ^^^ found u32, expected type `proc_macro::TokenStream`
+ |
+ = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature.rs:10:33
+ |
+LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
+ | ^^^ found i32, expected type `proc_macro::TokenStream`
+ |
+ = note: derive proc macros must have a signature of `fn(TokenStream) -> TokenStream`
+
+error: mismatched derive proc macro signature
+ --> $DIR/signature.rs:10:38
|
- = help: the trait `Fn<(proc_macro::TokenStream,)>` is not implemented for fn item `unsafe extern "C" fn(i32, u32) -> u32 {foo}`
- = note: unsafe function cannot be called generically without an unsafe block
-note: required by a bound in `ProcMacro::custom_derive`
- --> $SRC_DIR/proc_macro/src/bridge/client.rs:LL:COL
+LL | pub unsafe extern "C" fn foo(a: i32, b: u32) -> u32 {
+ | ^^^^^^ found unexpected argument
-error: aborting due to previous error
+error: aborting due to 5 previous errors
-For more information about this error, try `rustc --explain E0277`.
error[E0597]: `x` does not live long enough
--> $DIR/do-not-suggest-adding-bound-to-opaque-type.rs:9:7
|
+LL | let x = ();
+ | - binding `x` declared here
LL | S(&x)
| --^^-
| | |
--- /dev/null
+// FIXME: This test should pass as the first two fields add implied bounds that
+// `'a` is equal to `'b` while the last one should simply use that fact. With
+// the current implementation this errors. We have to be careful as implied bounds
+// are only sound if they're also correctly checked.
+
+struct Inv<T>(*mut T); // `T` is invariant.
+type A = for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'a ()>);
+type B = for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'b ()>);
+
+fn main() {
+ let x: A = |_, _, _| ();
+ let y: B = x; //~ ERROR mismatched types
+ let _: A = y; //~ ERROR mismatched types
+}
--- /dev/null
+error[E0308]: mismatched types
+ --> $DIR/higher-ranked-implied.rs:12:16
+ |
+LL | let y: B = x;
+ | ^ one type is more general than the other
+ |
+ = note: expected fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'b ()>)`
+ found fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'a ()>)`
+
+error[E0308]: mismatched types
+ --> $DIR/higher-ranked-implied.rs:13:16
+ |
+LL | let _: A = y;
+ | ^ one type is more general than the other
+ |
+ = note: expected fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'a ()>)`
+ found fn pointer `for<'a, 'b> fn(Inv<&'a &'b ()>, Inv<&'b &'a ()>, Inv<&'b ()>)`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
error[E0597]: `a` does not live long enough
--> $DIR/regions-addr-of-arg.rs:5:30
|
+LL | fn foo(a: isize) {
+ | - binding `a` declared here
LL | let _p: &'static isize = &a;
| -------------- ^^ borrowed value does not live long enough
| |
LL | fn call1<'a>(x: &'a usize) {
| -- lifetime `'a` defined here
...
+LL | let y: usize = 3;
+ | - binding `y` declared here
LL | let z: &'a & usize = &(&y);
| ----------- ^^^^ borrowed value does not live long enough
| |
error[E0597]: `x` does not live long enough
--> $DIR/regions-infer-proc-static-upvar.rs:10:13
|
+LL | let x = 3;
+ | - binding `x` declared here
LL | let y = &x;
| ^^ borrowed value does not live long enough
LL | / foo(move|| {
error[E0597]: `y` does not live long enough
--> $DIR/regions-nested-fns.rs:5:18
|
+LL | let y = 3;
+ | - binding `y` declared here
LL | let mut ay = &y;
| ^^ borrowed value does not live long enough
...
error[E0597]: `line` does not live long enough
--> $DIR/regions-pattern-typing-issue-19552.rs:5:14
|
+LL | let line = String::new();
+ | ---- binding `line` declared here
LL | match [&*line] {
| ^^^^ borrowed value does not live long enough
LL | [ word ] => { assert_static(word); }
--> $DIR/regions-pattern-typing-issue-19997.rs:7:13
|
LL | match (&a1,) {
- | --- borrow of `a1` occurs here
+ | --- `a1` is borrowed here
LL | (&ref b0,) => {
LL | a1 = &f;
- | ^^^^^^^ assignment to borrowed `a1` occurs here
+ | ^^^^^^^ `a1` is assigned to here but it was already borrowed
LL | drop(b0);
| -- borrow later used here
|
= note: expected fn item `extern "rust-intrinsic" fn(_) -> _ {likely}`
found fn item `extern "rust-intrinsic" fn(_) -> _ {unlikely}`
- = note: different `fn` items always have unique types, even if their signatures are the same
- = help: change the expected type to be function pointer `extern "rust-intrinsic" fn(bool) -> bool`
- = help: if the expected type is due to type inference, cast the expected `fn` to a function pointer: `likely as extern "rust-intrinsic" fn(bool) -> bool`
+ = note: different fn items have unique types, even if their signatures are the same
error: aborting due to 3 previous errors
--> $DIR/borrowck-non-exhaustive.rs:12:11
|
LL | let y = &mut x;
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | match x {
| ^ use of borrowed `x`
...
|
LL | if let Some(n) = opt else {
| ^
+help: remove the `if` if you meant to write a `let...else` statement
+ --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:24:5
+ |
+LL | if let Some(n) = opt else {
+ | ^^
error: this `if` expression is missing a block after the condition
--> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:28:5
| ---------------------------------- `#[target_feature]` added here
...
LL | let foo: fn() = foo;
- | ---- ^^^ cannot coerce functions with `#[target_feature]` to safe function pointers
- | |
+ | ---- ^^^
+ | | |
+ | | cannot coerce functions with `#[target_feature]` to safe function pointers
+ | | help: consider casting to a fn pointer: `foo as fn()`
| expected due to this
|
= note: expected fn pointer `fn()`
found fn item `fn() {foo}`
+ = note: fn items are distinct from fn pointers
= note: functions with `#[target_feature]` can only be coerced to `unsafe` function pointers
error: aborting due to previous error
| ---------------------------------- `#[target_feature]` added here
...
LL | let foo: fn() = foo;
- | ---- ^^^ cannot coerce functions with `#[target_feature]` to safe function pointers
- | |
+ | ---- ^^^
+ | | |
+ | | cannot coerce functions with `#[target_feature]` to safe function pointers
+ | | help: consider casting to a fn pointer: `foo as fn()`
| expected due to this
|
= note: expected fn pointer `fn()`
found fn item `fn() {foo}`
+ = note: fn items are distinct from fn pointers
= note: functions with `#[target_feature]` can only be coerced to `unsafe` function pointers
error: aborting due to previous error
error[E0597]: `s` does not live long enough
--> $DIR/lifetime-update.rs:20:17
|
+LL | let s = String::from("hello");
+ | - binding `s` declared here
+...
LL | lt_str: &s,
| ^^ borrowed value does not live long enough
...
#![feature(rustc_attrs)]
use std::{
+ cell::Cell,
ops::{Deref, CoerceUnsized, DispatchFromDyn},
marker::Unsize,
};
impl<T: Unsize<U> + ?Sized, U: ?Sized> CoerceUnsized<Ptr<U>> for Ptr<T> {}
impl<T: Unsize<U> + ?Sized, U: ?Sized> DispatchFromDyn<Ptr<U>> for Ptr<T> {}
+
+struct CellPtr<'a, T: ?Sized>(Cell<&'a T>);
+
+impl<'a, T: ?Sized> Deref for CellPtr<'a, T> {
+ type Target = T;
+
+ fn deref(&self) -> &T {
+ self.0.get()
+ }
+}
+
+impl<'a, T: Unsize<U> + ?Sized, U: ?Sized> CoerceUnsized<CellPtr<'a, U>> for CellPtr<'a, T> {}
+impl<'a, T: Unsize<U> + ?Sized, U: ?Sized> DispatchFromDyn<CellPtr<'a, U>> for CellPtr<'a, T> {}
+
struct Wrapper<T: ?Sized>(T);
impl<T: ?Sized> Deref for Wrapper<T> {
fn ptr_wrapper(self: Ptr<Wrapper<Self>>) -> i32;
fn wrapper_ptr(self: Wrapper<Ptr<Self>>) -> i32;
fn wrapper_ptr_wrapper(self: Wrapper<Ptr<Wrapper<Self>>>) -> i32;
+ fn cell(self: CellPtr<Self>) -> i32;
}
impl Trait for i32 {
fn wrapper_ptr_wrapper(self: Wrapper<Ptr<Wrapper<Self>>>) -> i32 {
***self
}
+ fn cell(self: CellPtr<Self>) -> i32 {
+ *self
+ }
}
fn main() {
let wpw = Wrapper(Ptr(Box::new(Wrapper(7)))) as Wrapper<Ptr<Wrapper<dyn Trait>>>;
assert_eq!(wpw.wrapper_ptr_wrapper(), 7);
+
+ let c = CellPtr(Cell::new(&8)) as CellPtr<dyn Trait>;
+ assert_eq!(c.cell(), 8);
}
error[E0597]: `x` does not live long enough
--> $DIR/issue-61882-2.rs:6:14
|
+LL | let x = 0;
+ | - binding `x` declared here
LL | Self(&x);
| ^^
| |
error[E0505]: cannot move out of `f` because it is borrowed
--> $DIR/borrowck-call-is-borrow-issue-12224.rs:55:16
|
+LL | let mut f = move |g: Box<dyn FnMut(isize)>, b: isize| {
+ | ----- binding `f` declared here
+...
LL | f(Box::new(|a| {
| - ^^^ move out of `f` occurs here
| |
{
let young = ['y']; // statement 3
+ //~^ NOTE binding `young` declared here
v2.push(&young[0]); // statement 4
//~^ ERROR `young[_]` does not live long enough
error[E0597]: `young[_]` does not live long enough
- --> $DIR/borrowck-let-suggestion-suffixes.rs:12:17
+ --> $DIR/borrowck-let-suggestion-suffixes.rs:13:17
|
+LL | let young = ['y']; // statement 3
+ | ----- binding `young` declared here
+...
LL | v2.push(&young[0]); // statement 4
| ^^^^^^^^^ borrowed value does not live long enough
...
| -- borrow later used here
error[E0716]: temporary value dropped while borrowed
- --> $DIR/borrowck-let-suggestion-suffixes.rs:19:14
+ --> $DIR/borrowck-let-suggestion-suffixes.rs:20:14
|
LL | v3.push(&id('x')); // statement 6
| ^^^^^^^ - temporary value is freed at the end of this statement
|
error[E0716]: temporary value dropped while borrowed
- --> $DIR/borrowck-let-suggestion-suffixes.rs:29:18
+ --> $DIR/borrowck-let-suggestion-suffixes.rs:30:18
|
LL | v4.push(&id('y'));
| ^^^^^^^ - temporary value is freed at the end of this statement
= note: consider using a `let` binding to create a longer lived value
error[E0716]: temporary value dropped while borrowed
- --> $DIR/borrowck-let-suggestion-suffixes.rs:40:14
+ --> $DIR/borrowck-let-suggestion-suffixes.rs:41:14
|
LL | v5.push(&id('z'));
| ^^^^^^^ - temporary value is freed at the end of this statement
error[E0597]: `*a` does not live long enough
--> $DIR/destructor-restrictions.rs:8:10
|
+LL | let a = Box::new(RefCell::new(4));
+ | - binding `a` declared here
LL | *a.borrow() + 1
| ^^^^^^^^^^
| |
error[E0597]: `*m` does not live long enough
--> $DIR/dropck-object-cycle.rs:27:31
|
+LL | let m : Box<dyn Trait+'static> = make_val();
+ | - binding `m` declared here
LL | assert_eq!(object_invoke1(&*m), (4,5));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `b2` does not live long enough
--> $DIR/dropck_arr_cycle_checked.rs:93:24
|
+LL | let (b1, b2, b3);
+ | -- binding `b2` declared here
+...
LL | b1.a[0].v.set(Some(&b2));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `b3` does not live long enough
--> $DIR/dropck_arr_cycle_checked.rs:95:24
|
+LL | let (b1, b2, b3);
+ | -- binding `b3` declared here
+...
LL | b1.a[1].v.set(Some(&b3));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `b1` does not live long enough
--> $DIR/dropck_arr_cycle_checked.rs:99:24
|
+LL | let (b1, b2, b3);
+ | -- binding `b1` declared here
+...
LL | b3.a[0].v.set(Some(&b1));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `d2` does not live long enough
--> $DIR/dropck_direct_cycle_with_drop.rs:36:19
|
+LL | let (d1, d2) = (D::new(format!("d1")), D::new(format!("d2")));
+ | -- binding `d2` declared here
LL | d1.p.set(Some(&d2));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `d1` does not live long enough
--> $DIR/dropck_direct_cycle_with_drop.rs:38:19
|
+LL | let (d1, d2) = (D::new(format!("d1")), D::new(format!("d2")));
+ | -- binding `d1` declared here
+...
LL | d2.p.set(Some(&d1));
| ^^^ borrowed value does not live long enough
LL |
error[E0597]: `bomb` does not live long enough
--> $DIR/dropck_misc_variants.rs:23:36
|
+LL | let (_w, bomb);
+ | ---- binding `bomb` declared here
+LL | bomb = vec![""];
LL | _w = Wrap::<&[&str]>(NoisyDrop(&bomb));
| ^^^^^ borrowed value does not live long enough
LL | }
error[E0597]: `v` does not live long enough
--> $DIR/dropck_misc_variants.rs:31:27
|
+LL | let (_w,v);
+ | - binding `v` declared here
+...
LL | let u = NoisyDrop(&v);
| ^^ borrowed value does not live long enough
...
error[E0597]: `c2` does not live long enough
--> $DIR/dropck_vec_cycle_checked.rs:98:24
|
+LL | let (mut c1, mut c2, mut c3);
+ | ------ binding `c2` declared here
+...
LL | c1.v[0].v.set(Some(&c2));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `c3` does not live long enough
--> $DIR/dropck_vec_cycle_checked.rs:100:24
|
+LL | let (mut c1, mut c2, mut c3);
+ | ------ binding `c3` declared here
+...
LL | c1.v[1].v.set(Some(&c3));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `c1` does not live long enough
--> $DIR/dropck_vec_cycle_checked.rs:104:24
|
+LL | let (mut c1, mut c2, mut c3);
+ | ------ binding `c1` declared here
+...
LL | c3.v[0].v.set(Some(&c1));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `y` does not live long enough
--> $DIR/issue-23338-locals-die-before-temps-of-body.rs:10:5
|
+LL | let y = x;
+ | - binding `y` declared here
LL | y.borrow().clone()
| ^^^^^^^^^^
| |
error[E0597]: `y` does not live long enough
--> $DIR/issue-23338-locals-die-before-temps-of-body.rs:17:9
|
+LL | let y = x;
+ | - binding `y` declared here
LL | y.borrow().clone()
| ^^^^^^^^^^
| |
error[E0597]: `d1` does not live long enough
--> $DIR/issue-24805-dropck-child-has-items-via-parent.rs:28:18
|
+LL | let (_d, d1);
+ | -- binding `d1` declared here
+...
LL | _d = D_Child(&d1);
| ^^^ borrowed value does not live long enough
...
error[E0597]: `d1` does not live long enough
--> $DIR/issue-24805-dropck-trait-has-items.rs:37:26
|
+LL | let (_d, d1);
+ | -- binding `d1` declared here
+LL | d1 = D_HasSelfMethod(1);
LL | _d = D_HasSelfMethod(&d1);
| ^^^ borrowed value does not live long enough
LL | }
error[E0597]: `d1` does not live long enough
--> $DIR/issue-24805-dropck-trait-has-items.rs:43:33
|
+LL | let (_d, d1);
+ | -- binding `d1` declared here
+LL | d1 = D_HasMethodWithSelfArg(1);
LL | _d = D_HasMethodWithSelfArg(&d1);
| ^^^ borrowed value does not live long enough
LL | }
error[E0597]: `d1` does not live long enough
--> $DIR/issue-24805-dropck-trait-has-items.rs:49:20
|
+LL | let (_d, d1);
+ | -- binding `d1` declared here
+LL | d1 = D_HasType(1);
LL | _d = D_HasType(&d1);
| ^^^ borrowed value does not live long enough
LL | }
error[E0597]: `d1` does not live long enough
--> $DIR/issue-24895-copy-clone-dropck.rs:27:14
|
+LL | let (d2, d1);
+ | -- binding `d1` declared here
+LL | d1 = D(34, "d1");
LL | d2 = D(S(&d1, "inner"), "d2");
| ^^^ borrowed value does not live long enough
LL | }
error[E0597]: `container` does not live long enough
--> $DIR/issue-25199.rs:70:27
|
+LL | let container = Container::new();
+ | --------- binding `container` declared here
LL | let test = Test{test: &container};
| ^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `ticking` does not live long enough
--> $DIR/issue-26656.rs:40:35
|
+LL | let (mut zook, ticking);
+ | ------- binding `ticking` declared here
+...
LL | zook.button = B::BigRedButton(&ticking);
| ^^^^^^^^ borrowed value does not live long enough
LL | }
error[E0597]: `x` does not live long enough
--> $DIR/issue-29106.rs:16:26
|
+LL | let (y, x);
+ | - binding `x` declared here
+LL | x = "alive".to_string();
LL | y = Arc::new(Foo(&x));
| ^^ borrowed value does not live long enough
LL | }
error[E0597]: `x` does not live long enough
--> $DIR/issue-29106.rs:23:25
|
+LL | let (y, x);
+ | - binding `x` declared here
+LL | x = "alive".to_string();
LL | y = Rc::new(Foo(&x));
| ^^ borrowed value does not live long enough
LL | }
error[E0597]: `a` does not live long enough
--> $DIR/issue-36537.rs:5:13
|
+LL | let a = 42;
+ | - binding `a` declared here
LL | p = &a;
| ^^ borrowed value does not live long enough
...
--> $DIR/issue-40157.rs:2:53
|
LL | {println!("{:?}", match { let foo = vec![1, 2]; foo.get(1) } { x => x });}
- | ------------------------^^^^^^^^^^--
- | | | |
- | | | `foo` dropped here while still borrowed
- | | borrowed value does not live long enough
- | borrow later used here
+ | --- ^^^^^^^^^^ - `foo` dropped here while still borrowed
+ | | |
+ | | borrowed value does not live long enough
+ | binding `foo` declared here
error: aborting due to previous error
error[E0597]: `first_dropped` does not live long enough
--> $DIR/issue28498-reject-lifetime-param.rs:32:19
|
+LL | let (foo1, first_dropped);
+ | ------------- binding `first_dropped` declared here
+...
LL | foo1 = Foo(1, &first_dropped);
| ^^^^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `first_dropped` does not live long enough
--> $DIR/issue28498-reject-passed-to-fn.rs:34:19
|
+LL | let (foo1, first_dropped);
+ | ------------- binding `first_dropped` declared here
+...
LL | foo1 = Foo(1, &first_dropped, Box::new(callback));
| ^^^^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `first_dropped` does not live long enough
--> $DIR/issue28498-reject-trait-bound.rs:34:19
|
+LL | let (foo1, first_dropped);
+ | ------------- binding `first_dropped` declared here
+...
LL | foo1 = Foo(1, &first_dropped);
| ^^^^^^^^^^^^^^ borrowed value does not live long enough
...
error[E0597]: `b` does not live long enough
--> $DIR/mut-ptr-cant-outlive-ref.rs:8:15
|
+LL | let b = m.borrow();
+ | - binding `b` declared here
LL | p = &*b;
| ^ borrowed value does not live long enough
LL | }
|
LL | let r = {
| - borrow later stored here
-...
+LL | let a = 42;
+ | - binding `a` declared here
+LL | let b = 42;
LL | &a..&b
| ^^ borrowed value does not live long enough
LL | };
|
LL | let r = {
| - borrow later stored here
-...
+LL | let a = 42;
+LL | let b = 42;
+ | - binding `b` declared here
LL | &a..&b
| ^^ borrowed value does not live long enough
LL | };
error[E0597]: `c` does not live long enough
--> $DIR/regionck-unboxed-closure-lifetimes.rs:8:21
|
+LL | let c = 1;
+ | - binding `c` declared here
LL | let c_ref = &c;
| ^^ borrowed value does not live long enough
...
error[E0597]: `tmp0` does not live long enough
--> $DIR/regions-close-over-type-parameter-2.rs:23:20
|
+LL | let tmp0 = 3;
+ | ---- binding `tmp0` declared here
LL | let tmp1 = &tmp0;
| ^^^^^ borrowed value does not live long enough
LL | repeater3(tmp1)
--> $DIR/regions-escape-loop-via-variable.rs:11:13
|
LL | let x = 1 + *p;
- | -- borrow later used here
+ | - -- borrow later used here
+ | |
+ | binding `x` declared here
LL | p = &x;
| ^^ borrowed value does not live long enough
LL | }
--> $DIR/regions-escape-loop-via-vec.rs:5:11
|
LL | let mut _y = vec![&mut x];
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | while x < 10 {
| ^ use of borrowed `x`
LL | let mut z = x;
--> $DIR/regions-escape-loop-via-vec.rs:6:21
|
LL | let mut _y = vec![&mut x];
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
LL | while x < 10 {
LL | let mut z = x;
| ^ use of borrowed `x`
error[E0597]: `z` does not live long enough
--> $DIR/regions-escape-loop-via-vec.rs:7:17
|
+LL | let mut z = x;
+ | ----- binding `z` declared here
LL | _y.push(&mut z);
- | --------^^^^^^-
- | | |
- | | borrowed value does not live long enough
- | borrow later used here
+ | ^^^^^^ borrowed value does not live long enough
...
LL | }
| - `z` dropped here while still borrowed
--> $DIR/regions-escape-loop-via-vec.rs:9:9
|
LL | let mut _y = vec![&mut x];
- | ------ borrow of `x` occurs here
+ | ------ `x` is borrowed here
...
LL | _y.push(&mut z);
| --------------- borrow later used here
error[E0597]: `*x` does not live long enough
--> $DIR/regions-infer-borrow-scope-within-loop.rs:13:20
|
+LL | let x = make_box();
+ | - binding `x` declared here
+...
LL | y = borrow(&*x);
| ^^^ borrowed value does not live long enough
...
LL | let bad = {
| --- borrow later stored here
LL | let x = 1;
+ | - binding `x` declared here
LL | let y = &x;
| ^^ borrowed value does not live long enough
...
LL | let lock = {
| ---- borrow later stored here
LL | let x = 1;
+ | - binding `x` declared here
LL | Mutex::new(&x)
| ^^ borrowed value does not live long enough
LL | };
LL | let lock = {
| ---- borrow later stored here
LL | let x = 1;
+ | - binding `x` declared here
LL | RwLock::new(&x)
| ^^ borrowed value does not live long enough
LL | };
|
LL | let (_tx, rx) = {
| --- borrow later used here
-...
+LL | let x = 1;
+ | - binding `x` declared here
+LL | let (tx, rx) = mpsc::channel();
LL | let _ = tx.send(&x);
| ^^ borrowed value does not live long enough
LL | (tx, rx)
error[E0505]: cannot move out of `y` because it is borrowed
--> $DIR/send-is-not-static-std-sync.rs:13:10
|
+LL | let y = Box::new(1);
+ | - binding `y` declared here
+LL | let lock = Mutex::new(&x);
LL | *lock.lock().unwrap() = &*y;
| --- borrow of `*y` occurs here
LL | drop(y);
error[E0597]: `z` does not live long enough
--> $DIR/send-is-not-static-std-sync.rs:16:33
|
+LL | let z = 2;
+ | - binding `z` declared here
LL | *lock.lock().unwrap() = &z;
| ^^ borrowed value does not live long enough
LL | }
error[E0505]: cannot move out of `y` because it is borrowed
--> $DIR/send-is-not-static-std-sync.rs:27:10
|
+LL | let y = Box::new(1);
+ | - binding `y` declared here
+LL | let lock = RwLock::new(&x);
LL | *lock.write().unwrap() = &*y;
| --- borrow of `*y` occurs here
LL | drop(y);
error[E0597]: `z` does not live long enough
--> $DIR/send-is-not-static-std-sync.rs:30:34
|
+LL | let z = 2;
+ | - binding `z` declared here
LL | *lock.write().unwrap() = &z;
| ^^ borrowed value does not live long enough
LL | }
error[E0505]: cannot move out of `y` because it is borrowed
--> $DIR/send-is-not-static-std-sync.rs:43:10
|
+LL | let y = Box::new(1);
+ | - binding `y` declared here
+...
LL | tx.send(&*y);
| --- borrow of `*y` occurs here
LL | drop(y);
error[E0597]: `z` does not live long enough
--> $DIR/send-is-not-static-std-sync.rs:46:17
|
+LL | let z = 2;
+ | - binding `z` declared here
LL | tx.send(&z).unwrap();
| ^^ borrowed value does not live long enough
LL | }
error[E0597]: `c2` does not live long enough
--> $DIR/vec-must-not-hide-type-from-dropck.rs:117:24
|
+LL | let (mut c1, mut c2);
+ | ------ binding `c2` declared here
+...
LL | c1.v[0].v.set(Some(&c2));
| ^^^ borrowed value does not live long enough
...
error[E0597]: `c1` does not live long enough
--> $DIR/vec-must-not-hide-type-from-dropck.rs:119:24
|
+LL | let (mut c1, mut c2);
+ | ------ binding `c1` declared here
+...
LL | c2.v[0].v.set(Some(&c1));
| ^^^ borrowed value does not live long enough
LL |
error[E0597]: `x` does not live long enough
--> $DIR/vec_refs_data_with_early_death.rs:17:12
|
+LL | let x: i8 = 3;
+ | - binding `x` declared here
+...
LL | v.push(&x);
| ^^ borrowed value does not live long enough
...
error[E0597]: `y` does not live long enough
--> $DIR/vec_refs_data_with_early_death.rs:19:12
|
+LL | let y: i8 = 4;
+ | - binding `y` declared here
+...
LL | v.push(&y);
| ^^ borrowed value does not live long enough
...
LL | let dangling = {
| -------- borrow later stored here
LL | let pointer = Box::new(42);
+ | ------- binding `pointer` declared here
LL | f2.xmute(&pointer)
| ^^^^^^^^ borrowed value does not live long enough
LL | };
error[E0597]: `x` does not live long enough
--> $DIR/static-lifetime-bound.rs:5:7
|
+LL | let x = 0;
+ | - binding `x` declared here
LL | f(&x);
| --^^-
| | |
--> $DIR/static-reference-to-fn-1.rs:17:15
|
LL | func: &foo,
- | ^^^^ expected fn pointer, found fn item
+ | ^^^^
+ | |
+ | expected fn pointer, found fn item
+ | help: consider casting to a fn pointer: `&(foo as fn() -> Option<isize>)`
|
= note: expected reference `&fn() -> Option<isize>`
found reference `&fn() -> Option<isize> {foo}`
+ = note: fn items are distinct from fn pointers
error: aborting due to previous error
| ^^^^^^^^^ `Cell<i32>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
note: required by a bound in `test`
--> $DIR/not-sync.rs:5:12
|
| ^^^^^^^^^^^^ `RefCell<i32>` cannot be shared between threads safely
|
= help: the trait `Sync` is not implemented for `RefCell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
note: required by a bound in `test`
--> $DIR/not-sync.rs:5:12
|
--- /dev/null
+struct Foo;
+
+impl Foo {
+ const A_CONST: usize = 1;
+
+ fn foo() -> usize {
+ A_CONST //~ ERROR cannot find value `A_CONST` in this scope
+ }
+}
+
+fn main() {}
--- /dev/null
+error[E0425]: cannot find value `A_CONST` in this scope
+ --> $DIR/assoc-const-without-self.rs:7:9
+ |
+LL | A_CONST
+ | ^^^^^^^ not found in this scope
+ |
+help: consider using the associated constant
+ |
+LL | Self::A_CONST
+ | ++++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0425`.
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/borrow-for-loop-head.rs:4:18
|
+LL | let a = vec![1, 2, 3];
+ | - binding `a` declared here
LL | for i in &a {
| -- borrow of `a` occurs here
LL | for j in a {
| -- captured by this `FnMut` closure
LL | // Shouldn't suggest `move ||.as_ref()` here
LL | move || {
- | ^^^^^^^ move out of `var` occurs here
+ | ^^^^^^^ `var` is moved here
LL |
LL | var = Some(NotCopyable);
| ---
LL | let ref _moved @ _from = String::from("foo");
| ----------^^^-----
| | |
- | | value moved into `_from` here
- | value borrowed, by `_moved`, here
+ | | value is moved into `_from` here
+ | value is borrowed by `_moved` here
error: cannot move out of value because it is borrowed
--> $DIR/ref-pattern-binding.rs:15:9
LL | let ref _moved @ S { f } = S { f: String::from("foo") };
| ----------^^^^^^^-^^
| | |
- | | value moved into `f` here
- | value borrowed, by `_moved`, here
+ | | value is moved into `f` here
+ | value is borrowed by `_moved` here
error: borrow of moved value
--> $DIR/ref-pattern-binding.rs:18:9
--- /dev/null
+// MutexGuard<Cell<i32>> must not be Sync, that would be unsound.
+use std::sync::Mutex;
+use std::cell::Cell;
+
+fn test_sync<T: Sync>(_t: T) {}
+
+fn main()
+{
+ let m = Mutex::new(Cell::new(0i32));
+ let guard = m.lock().unwrap();
+ test_sync(guard);
+ //~^ ERROR `Cell<i32>` cannot be shared between threads safely [E0277]
+}
--- /dev/null
+error[E0277]: `Cell<i32>` cannot be shared between threads safely
+ --> $DIR/mutexguard-sync.rs:11:15
+ |
+LL | test_sync(guard);
+ | --------- ^^^^^ `Cell<i32>` cannot be shared between threads safely
+ | |
+ | required by a bound introduced by this call
+ |
+ = help: the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
+ = note: required for `MutexGuard<'_, Cell<i32>>` to implement `Sync`
+note: required by a bound in `test_sync`
+ --> $DIR/mutexguard-sync.rs:5:17
+ |
+LL | fn test_sync<T: Sync>(_t: T) {}
+ | ^^^^ required by this bound in `test_sync`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
--- /dev/null
+fn require_sync<T: Sync>() {}
+//~^ NOTE required by this bound in `require_sync`
+//~| NOTE required by this bound in `require_sync`
+//~| NOTE required by this bound in `require_sync`
+//~| NOTE required by this bound in `require_sync`
+//~| NOTE required by a bound in `require_sync`
+//~| NOTE required by a bound in `require_sync`
+//~| NOTE required by a bound in `require_sync`
+//~| NOTE required by a bound in `require_sync`
+
+fn main() {
+ require_sync::<std::cell::Cell<()>>();
+ //~^ ERROR `Cell<()>` cannot be shared between threads safely
+ //~| NOTE `Cell<()>` cannot be shared between threads safely
+ //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock`
+
+ require_sync::<std::cell::Cell<u8>>();
+ //~^ ERROR `Cell<u8>` cannot be shared between threads safely
+ //~| NOTE `Cell<u8>` cannot be shared between threads safely
+ //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU8` instead
+
+ require_sync::<std::cell::Cell<i32>>();
+ //~^ ERROR `Cell<i32>` cannot be shared between threads safely
+ //~| NOTE `Cell<i32>` cannot be shared between threads safely
+ //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
+
+ require_sync::<std::cell::Cell<bool>>();
+ //~^ ERROR `Cell<bool>` cannot be shared between threads safely
+ //~| NOTE `Cell<bool>` cannot be shared between threads safely
+ //~| NOTE if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicBool` instead
+}
--- /dev/null
+error[E0277]: `Cell<()>` cannot be shared between threads safely
+ --> $DIR/suggest-cell.rs:12:20
+ |
+LL | require_sync::<std::cell::Cell<()>>();
+ | ^^^^^^^^^^^^^^^^^^^ `Cell<()>` cannot be shared between threads safely
+ |
+ = help: the trait `Sync` is not implemented for `Cell<()>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock`
+note: required by a bound in `require_sync`
+ --> $DIR/suggest-cell.rs:1:20
+ |
+LL | fn require_sync<T: Sync>() {}
+ | ^^^^ required by this bound in `require_sync`
+
+error[E0277]: `Cell<u8>` cannot be shared between threads safely
+ --> $DIR/suggest-cell.rs:17:20
+ |
+LL | require_sync::<std::cell::Cell<u8>>();
+ | ^^^^^^^^^^^^^^^^^^^ `Cell<u8>` cannot be shared between threads safely
+ |
+ = help: the trait `Sync` is not implemented for `Cell<u8>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicU8` instead
+note: required by a bound in `require_sync`
+ --> $DIR/suggest-cell.rs:1:20
+ |
+LL | fn require_sync<T: Sync>() {}
+ | ^^^^ required by this bound in `require_sync`
+
+error[E0277]: `Cell<i32>` cannot be shared between threads safely
+ --> $DIR/suggest-cell.rs:22:20
+ |
+LL | require_sync::<std::cell::Cell<i32>>();
+ | ^^^^^^^^^^^^^^^^^^^^ `Cell<i32>` cannot be shared between threads safely
+ |
+ = help: the trait `Sync` is not implemented for `Cell<i32>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicI32` instead
+note: required by a bound in `require_sync`
+ --> $DIR/suggest-cell.rs:1:20
+ |
+LL | fn require_sync<T: Sync>() {}
+ | ^^^^ required by this bound in `require_sync`
+
+error[E0277]: `Cell<bool>` cannot be shared between threads safely
+ --> $DIR/suggest-cell.rs:27:20
+ |
+LL | require_sync::<std::cell::Cell<bool>>();
+ | ^^^^^^^^^^^^^^^^^^^^^ `Cell<bool>` cannot be shared between threads safely
+ |
+ = help: the trait `Sync` is not implemented for `Cell<bool>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` or `std::sync::atomic::AtomicBool` instead
+note: required by a bound in `require_sync`
+ --> $DIR/suggest-cell.rs:1:20
+ |
+LL | fn require_sync<T: Sync>() {}
+ | ^^^^ required by this bound in `require_sync`
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0277`.
--- /dev/null
+#![feature(once_cell)]
+
+fn require_sync<T: Sync>() {}
+//~^ NOTE required by this bound in `require_sync`
+//~| NOTE required by a bound in `require_sync`
+
+fn main() {
+ require_sync::<std::cell::OnceCell<()>>();
+ //~^ ERROR `OnceCell<()>` cannot be shared between threads safely
+ //~| NOTE `OnceCell<()>` cannot be shared between threads safely
+ //~| NOTE use `std::sync::OnceLock` instead
+}
--- /dev/null
+error[E0277]: `OnceCell<()>` cannot be shared between threads safely
+ --> $DIR/suggest-once-cell.rs:8:20
+ |
+LL | require_sync::<std::cell::OnceCell<()>>();
+ | ^^^^^^^^^^^^^^^^^^^^^^^ `OnceCell<()>` cannot be shared between threads safely
+ |
+ = help: the trait `Sync` is not implemented for `OnceCell<()>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::OnceLock` instead
+note: required by a bound in `require_sync`
+ --> $DIR/suggest-once-cell.rs:3:20
+ |
+LL | fn require_sync<T: Sync>() {}
+ | ^^^^ required by this bound in `require_sync`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
--- /dev/null
+#![feature(once_cell)]
+
+fn require_sync<T: Sync>() {}
+//~^ NOTE required by this bound in `require_sync`
+//~| NOTE required by a bound in `require_sync`
+
+fn main() {
+ require_sync::<std::cell::RefCell<()>>();
+ //~^ ERROR `RefCell<()>` cannot be shared between threads safely
+ //~| NOTE `RefCell<()>` cannot be shared between threads safely
+ //~| NOTE use `std::sync::RwLock` instead
+}
--- /dev/null
+error[E0277]: `RefCell<()>` cannot be shared between threads safely
+ --> $DIR/suggest-ref-cell.rs:8:20
+ |
+LL | require_sync::<std::cell::RefCell<()>>();
+ | ^^^^^^^^^^^^^^^^^^^^^^ `RefCell<()>` cannot be shared between threads safely
+ |
+ = help: the trait `Sync` is not implemented for `RefCell<()>`
+ = note: if you want to do aliasing and mutation between multiple threads, use `std::sync::RwLock` instead
+note: required by a bound in `require_sync`
+ --> $DIR/suggest-ref-cell.rs:3:20
+ |
+LL | fn require_sync<T: Sync>() {}
+ | ^^^^ required by this bound in `require_sync`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
error[E0597]: `s` does not live long enough
--> $DIR/check-trait-object-bounds-3.rs:15:34
|
+LL | let s = String::from("abcdef");
+ | - binding `s` declared here
LL | z = f::<dyn X<Y = &str>>(&s);
| ---------------------^^-
| | |
error[E0597]: `person` does not live long enough
--> $DIR/coercion-generic-regions.rs:17:24
|
+LL | let person = "Fred".to_string();
+ | ------ binding `person` declared here
LL | let person: &str = &person;
| ^^^^^^^
| |
--- /dev/null
+error[E0271]: expected `[async block@$DIR/async.rs:12:17: 12:25]` to be a future that resolves to `i32`, but it resolves to `()`
+ --> $DIR/async.rs:12:17
+ |
+LL | needs_async(async {});
+ | ----------- ^^^^^^^^ expected `i32`, found `()`
+ | |
+ | required by a bound introduced by this call
+ |
+note: required by a bound in `needs_async`
+ --> $DIR/async.rs:8:31
+ |
+LL | fn needs_async(_: impl Future<Output = i32>) {}
+ | ^^^^^^^^^^^^ required by this bound in `needs_async`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0271`.
--- /dev/null
+// compile-flags: -Ztrait-solver=next
+// edition: 2021
+// revisions: pass fail
+//[pass] check-pass
+
+use std::future::Future;
+
+fn needs_async(_: impl Future<Output = i32>) {}
+
+#[cfg(fail)]
+fn main() {
+ needs_async(async {});
+ //[fail]~^ ERROR to be a future that resolves to `i32`, but it resolves to `()`
+}
+
+#[cfg(pass)]
+fn main() {
+ needs_async(async { 1i32 });
+}
--- /dev/null
+error[E0277]: the trait bound `[generator@$DIR/generator.rs:18:21: 18:23]: Generator<A>` is not satisfied
+ --> $DIR/generator.rs:18:21
+ |
+LL | needs_generator(|| {
+ | _____---------------_^
+ | | |
+ | | required by a bound introduced by this call
+LL | |
+LL | |
+LL | |
+LL | | yield ();
+LL | | });
+ | |_____^ the trait `Generator<A>` is not implemented for `[generator@$DIR/generator.rs:18:21: 18:23]`
+ |
+note: required by a bound in `needs_generator`
+ --> $DIR/generator.rs:14:28
+ |
+LL | fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {}
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `needs_generator`
+
+error[E0271]: type mismatch resolving `<[generator@$DIR/generator.rs:18:21: 18:23] as Generator<A>>::Yield == B`
+ --> $DIR/generator.rs:18:21
+ |
+LL | needs_generator(|| {
+ | _____---------------_^
+ | | |
+ | | required by a bound introduced by this call
+LL | |
+LL | |
+LL | |
+LL | | yield ();
+LL | | });
+ | |_____^ types differ
+ |
+note: required by a bound in `needs_generator`
+ --> $DIR/generator.rs:14:41
+ |
+LL | fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {}
+ | ^^^^^^^^^ required by this bound in `needs_generator`
+
+error[E0271]: type mismatch resolving `<[generator@$DIR/generator.rs:18:21: 18:23] as Generator<A>>::Return == C`
+ --> $DIR/generator.rs:18:21
+ |
+LL | needs_generator(|| {
+ | _____---------------_^
+ | | |
+ | | required by a bound introduced by this call
+LL | |
+LL | |
+LL | |
+LL | | yield ();
+LL | | });
+ | |_____^ types differ
+ |
+note: required by a bound in `needs_generator`
+ --> $DIR/generator.rs:14:52
+ |
+LL | fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {}
+ | ^^^^^^^^^^ required by this bound in `needs_generator`
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0271, E0277.
+For more information about an error, try `rustc --explain E0271`.
--- /dev/null
+// compile-flags: -Ztrait-solver=next
+// edition: 2021
+// revisions: pass fail
+//[pass] check-pass
+
+#![feature(generator_trait, generators)]
+
+use std::ops::Generator;
+
+struct A;
+struct B;
+struct C;
+
+fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {}
+
+#[cfg(fail)]
+fn main() {
+ needs_generator(|| {
+ //[fail]~^ ERROR Generator<A>` is not satisfied
+ //[fail]~| ERROR as Generator<A>>::Yield == B`
+ //[fail]~| ERROR as Generator<A>>::Return == C`
+ yield ();
+ });
+}
+
+#[cfg(pass)]
+fn main() {
+ needs_generator(|_: A| {
+ let _: A = yield B;
+ C
+ })
+}
--- /dev/null
+// compile-flags: -Ztrait-solver=next
+// check-pass
+#![feature(ptr_metadata)]
+
+use std::ptr::{DynMetadata, Pointee};
+
+trait Trait<U> {}
+struct MyDst<T: ?Sized>(T);
+
+fn works<T>() {
+ let _: <T as Pointee>::Metadata = ();
+ let _: <[T] as Pointee>::Metadata = 1_usize;
+ let _: <str as Pointee>::Metadata = 1_usize;
+ let _: <dyn Trait<T> as Pointee>::Metadata = give::<DynMetadata<dyn Trait<T>>>();
+ let _: <MyDst<T> as Pointee>::Metadata = ();
+ let _: <((((([u8],),),),),) as Pointee>::Metadata = 1_usize;
+}
+
+fn give<U>() -> U {
+ loop {}
+}
+
+fn main() {}
error[E0505]: cannot move out of `v` because it is borrowed
--> $DIR/issue-97381.rs:26:14
|
+LL | let v = [1, 2, 3]
+ | - binding `v` declared here
+...
LL | let el = &v[0];
| - borrow of `v` occurs here
LL |
LL | let result: Result<(), &str> = try {
| ------ borrow later stored here
LL | let my_string = String::from("");
+ | --------- binding `my_string` declared here
LL | let my_str: & str = & my_string;
| ^^^^^^^^^^^ borrowed value does not live long enough
...
--> $DIR/try-block-bad-lifetime.rs:29:13
|
LL | let k = &mut i;
- | ------ borrow of `i` occurs here
+ | ------ `i` is borrowed here
...
LL | i = 10;
- | ^^^^^^ assignment to borrowed `i` occurs here
+ | ^^^^^^ `i` is assigned to here but it was already borrowed
LL | };
LL | ::std::mem::drop(k);
| - borrow later used here
--> $DIR/try-block-bad-lifetime.rs:32:9
|
LL | let k = &mut i;
- | ------ borrow of `i` occurs here
+ | ------ `i` is borrowed here
...
LL | i = 40;
- | ^^^^^^ assignment to borrowed `i` occurs here
+ | ^^^^^^ `i` is assigned to here but it was already borrowed
LL |
LL | let i_ptr = if let Err(i_ptr) = j { i_ptr } else { panic ! ("") };
| - borrow later used here
--> $DIR/try-block-maybe-bad-lifetime.rs:17:9
|
LL | &i
- | -- borrow of `i` occurs here
+ | -- `i` is borrowed here
LL | };
LL | i = 0;
- | ^^^^^ assignment to borrowed `i` occurs here
+ | ^^^^^ `i` is assigned to here but it was already borrowed
LL | let _ = i;
LL | do_something_with(x);
| - borrow later used here
--> $DIR/try-block-maybe-bad-lifetime.rs:40:9
|
LL | j = &i;
- | -- borrow of `i` occurs here
+ | -- `i` is borrowed here
LL | };
LL | i = 0;
- | ^^^^^ assignment to borrowed `i` occurs here
+ | ^^^^^ `i` is assigned to here but it was already borrowed
LL | let _ = i;
LL | do_something_with(j);
| - borrow later used here
fn f<'a: 'static>(t: &'a str) -> X<'a> {
//~^ WARNING unnecessary lifetime parameter
t
- //~^ ERROR non-defining opaque type use
+ //~^ ERROR expected generic lifetime parameter, found `'static`
}
fn extend_lt<'a>(o: &'a str) -> &'static str {
|
= help: you can use the `'static` lifetime directly, in place of `'a`
-error: non-defining opaque type use in defining scope
+error[E0792]: expected generic lifetime parameter, found `'static`
--> $DIR/bounds-are-checked.rs:10:5
|
LL | type X<'a> = impl Into<&'static str> + From<&'a str>;
error: aborting due to previous error; 1 warning emitted
+For more information about this error, try `rustc --explain E0792`.
fn concrete_lifetime() -> OneLifetime<'static> {
6u32
- //~^ ERROR non-defining opaque type use in defining scope
+ //~^ ERROR expected generic lifetime parameter, found `'static`
}
fn concrete_const() -> OneConst<{ 123 }> {
LL | 5u32
| ^^^^
-error: non-defining opaque type use in defining scope
+error[E0792]: expected generic lifetime parameter, found `'static`
--> $DIR/generic_nondefining_use.rs:21:5
|
LL | type OneLifetime<'a> = impl Debug;
--- /dev/null
+struct A;
+struct B;
+impl From<A> for B {
+ fn from(_: A) -> Self { B }
+}
+fn foo4(x: Result<(), A>) -> Result<(), B> {
+ match true {
+ true => x, //~ ERROR mismatched types
+ false => x,
+ }
+}
+fn foo5(x: Result<(), A>) -> Result<(), B> {
+ match true {
+ true => return x, //~ ERROR mismatched types
+ false => return x,
+ }
+}
+fn main() {
+ let _ = foo4(Ok(()));
+ let _ = foo5(Ok(()));
+ let _: Result<(), B> = { //~ ERROR mismatched types
+ Err(A);
+ };
+}
--- /dev/null
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value-2.rs:8:17
+ |
+LL | fn foo4(x: Result<(), A>) -> Result<(), B> {
+ | ------------- expected `Result<(), B>` because of return type
+LL | match true {
+LL | true => x,
+ | ^ expected struct `B`, found struct `A`
+ |
+ = note: expected enum `Result<_, B>`
+ found enum `Result<_, A>`
+help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
+ |
+LL | true => Ok(x?),
+ | +++ ++
+
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value-2.rs:14:24
+ |
+LL | fn foo5(x: Result<(), A>) -> Result<(), B> {
+ | ------------- expected `Result<(), B>` because of return type
+LL | match true {
+LL | true => return x,
+ | ^ expected struct `B`, found struct `A`
+ |
+ = note: expected enum `Result<_, B>`
+ found enum `Result<_, A>`
+help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
+ |
+LL | true => return Ok(x?),
+ | +++ ++
+
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value-2.rs:21:28
+ |
+LL | let _: Result<(), B> = {
+ | ____________________________^
+LL | | Err(A);
+LL | | };
+ | |_____^ expected enum `Result`, found `()`
+ |
+ = note: expected enum `Result<(), B>`
+ found unit type `()`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
--- /dev/null
+// run-rustfix
+struct A;
+struct B;
+impl From<A> for B {
+ fn from(_: A) -> Self { B }
+}
+fn foo1(x: Result<(), A>) -> Result<(), B> {
+ Ok(x?) //~ ERROR mismatched types
+}
+fn foo2(x: Result<(), A>) -> Result<(), B> {
+ return Ok(x?); //~ ERROR mismatched types
+}
+fn foo3(x: Result<(), A>) -> Result<(), B> {
+ if true {
+ Ok(x?) //~ ERROR mismatched types
+ } else {
+ Ok(x?) //~ ERROR mismatched types
+ }
+}
+fn main() {
+ let _ = foo1(Ok(()));
+ let _ = foo2(Ok(()));
+ let _ = foo3(Ok(()));
+}
--- /dev/null
+// run-rustfix
+struct A;
+struct B;
+impl From<A> for B {
+ fn from(_: A) -> Self { B }
+}
+fn foo1(x: Result<(), A>) -> Result<(), B> {
+ x //~ ERROR mismatched types
+}
+fn foo2(x: Result<(), A>) -> Result<(), B> {
+ return x; //~ ERROR mismatched types
+}
+fn foo3(x: Result<(), A>) -> Result<(), B> {
+ if true {
+ x //~ ERROR mismatched types
+ } else {
+ x //~ ERROR mismatched types
+ }
+}
+fn main() {
+ let _ = foo1(Ok(()));
+ let _ = foo2(Ok(()));
+ let _ = foo3(Ok(()));
+}
--- /dev/null
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value.rs:8:5
+ |
+LL | fn foo1(x: Result<(), A>) -> Result<(), B> {
+ | ------------- expected `Result<(), B>` because of return type
+LL | x
+ | ^ expected struct `B`, found struct `A`
+ |
+ = note: expected enum `Result<_, B>`
+ found enum `Result<_, A>`
+help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
+ |
+LL | Ok(x?)
+ | +++ ++
+
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value.rs:11:12
+ |
+LL | fn foo2(x: Result<(), A>) -> Result<(), B> {
+ | ------------- expected `Result<(), B>` because of return type
+LL | return x;
+ | ^ expected struct `B`, found struct `A`
+ |
+ = note: expected enum `Result<_, B>`
+ found enum `Result<_, A>`
+help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
+ |
+LL | return Ok(x?);
+ | +++ ++
+
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value.rs:15:9
+ |
+LL | fn foo3(x: Result<(), A>) -> Result<(), B> {
+ | ------------- expected `Result<(), B>` because of return type
+LL | if true {
+LL | x
+ | ^ expected struct `B`, found struct `A`
+ |
+ = note: expected enum `Result<_, B>`
+ found enum `Result<_, A>`
+help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
+ |
+LL | Ok(x?)
+ | +++ ++
+
+error[E0308]: mismatched types
+ --> $DIR/coerce-result-return-value.rs:17:9
+ |
+LL | fn foo3(x: Result<(), A>) -> Result<(), B> {
+ | ------------- expected `Result<(), B>` because of return type
+...
+LL | x
+ | ^ expected struct `B`, found struct `A`
+ |
+ = note: expected enum `Result<_, B>`
+ found enum `Result<_, A>`
+help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
+ |
+LL | Ok(x?)
+ | +++ ++
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
--- /dev/null
+// The error message here still is pretty confusing.
+
+fn main() {
+ let mut result = vec![1];
+ // The type of `result` is constrained to be `Vec<{integer}>` here.
+ // But the logic we use to find what expression constrains a type
+ // is not sophisticated enough to know this.
+
+ let mut vector = Vec::new();
+ vector.sort();
+ result.push(vector);
+ //~^ ERROR mismatched types
+ // So it thinks that the type of `result` is constrained here.
+}
+
+fn example2() {
+ let mut x = vec![1];
+ x.push("");
+ //~^ ERROR mismatched types
+}
--- /dev/null
+error[E0308]: mismatched types
+ --> $DIR/bad-type-in-vec-push.rs:11:17
+ |
+LL | vector.sort();
+ | ------ here the type of `vector` is inferred to be `Vec<_>`
+LL | result.push(vector);
+ | ---- ^^^^^^ expected integer, found struct `Vec`
+ | |
+ | arguments to this method are incorrect
+ |
+ = note: expected type `{integer}`
+ found struct `Vec<_>`
+note: associated function defined here
+ --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
+
+error[E0308]: mismatched types
+ --> $DIR/bad-type-in-vec-push.rs:18:12
+ |
+LL | x.push("");
+ | ---- ^^ expected integer, found `&str`
+ | |
+ | arguments to this method are incorrect
+ |
+note: associated function defined here
+ --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
LL | let f = || x += 1;
| -- - borrow occurs due to use of `x` in closure
| |
- | borrow of `x` occurs here
+ | `x` is borrowed here
LL | let _y = x;
| ^ use of borrowed `x`
LL | f;
--> $DIR/unboxed-closures-failed-recursive-fn-1.rs:20:5
|
LL | let f = |x: u32| -> u32 {
- | --------------- borrow of `factorial` occurs here
+ | --------------- `factorial` is borrowed here
LL | let g = factorial.as_ref().unwrap();
| --------- borrow occurs due to use in closure
...
LL | factorial = Some(Box::new(f));
| ^^^^^^^^^
| |
- | assignment to borrowed `factorial` occurs here
+ | `factorial` is assigned to here but it was already borrowed
| borrow later used here
error[E0597]: `factorial` does not live long enough
| ----------------------------------------- type annotation requires that `factorial` is borrowed for `'static`
LL |
LL | let f = |x: u32| -> u32 {
- | --------------- borrow of `factorial` occurs here
+ | --------------- `factorial` is borrowed here
LL | let g = factorial.as_ref().unwrap();
| --------- borrow occurs due to use in closure
...
LL | factorial = Some(Box::new(f));
- | ^^^^^^^^^ assignment to borrowed `factorial` occurs here
+ | ^^^^^^^^^ `factorial` is assigned to here but it was already borrowed
error: aborting due to 4 previous errors
error[E0505]: cannot move out of `x` because it is borrowed
--> $DIR/unop-move-semantics.rs:15:6
|
+LL | fn move_borrowed<T: Not<Output=T>>(x: T, mut y: T) {
+ | - binding `x` declared here
LL | let m = &x;
| -- borrow of `x` occurs here
...
error[E0505]: cannot move out of `y` because it is borrowed
--> $DIR/unop-move-semantics.rs:17:6
|
+LL | fn move_borrowed<T: Not<Output=T>>(x: T, mut y: T) {
+ | ----- binding `y` declared here
+LL | let m = &x;
LL | let n = &mut y;
| ------ borrow of `y` occurs here
...
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/variance-issue-20533.rs:28:14
|
+LL | let a = AffineU32(1);
+ | - binding `a` declared here
LL | let x = foo(&a);
| -- borrow of `a` occurs here
LL | drop(a);
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/variance-issue-20533.rs:34:14
|
+LL | let a = AffineU32(1);
+ | - binding `a` declared here
LL | let x = bar(&a);
| -- borrow of `a` occurs here
LL | drop(a);
error[E0505]: cannot move out of `a` because it is borrowed
--> $DIR/variance-issue-20533.rs:40:14
|
+LL | let a = AffineU32(1);
+ | - binding `a` declared here
LL | let x = baz(&a);
| -- borrow of `a` occurs here
LL | drop(a);
(See the [Target Tier Policy](https://doc.rust-lang.org/nightly/rustc/target-tier-policy.html).)
"""
+[mentions."src/doc/style-guide"]
+cc = ["@rust-lang/style"]
+
[assign]
warn_non_default_branch = true
contributing_url = "https://rustc-dev-guide.rust-lang.org/contributing.html"
fallback = [
"@Mark-Simulacrum"
]
+style-team = [
+ "@calebcartwright",
+ "@compiler-errors",
+ "@joshtriplett",
+ "@yaahc",
+]
[assign.owners]
"/.github/workflows" = ["infra-ci"]
"/src/doc/rust-by-example" = ["@ehuss"]
"/src/doc/rustc-dev-guide" = ["@ehuss"]
"/src/doc/rustdoc" = ["rustdoc"]
+"/src/doc/style-guide" = ["style-team"]
"/src/etc" = ["@Mark-Simulacrum"]
"/src/librustdoc" = ["rustdoc"]
"/src/llvm-project" = ["@cuviper"]
projects / rust.git / commitdiff