"cargo-test-macro",
"cargo-test-support",
"cargo-util",
- "clap 4.1.3",
+ "clap 4.1.4",
"crates-io",
"curl",
"curl-sys",
[[package]]
name = "clap"
-version = "4.1.3"
+version = "4.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d8d93d855ce6a0aa87b8473ef9169482f40abaa2e9e0993024c35c902cbd5920"
+checksum = "f13b9c79b5d1dd500d20ef541215a6423c75829ef43117e1b4d17fd8af0b5d76"
dependencies = [
"bitflags",
"clap_derive 4.1.0",
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "10861370d2ba66b0f5989f83ebf35db6421713fd92351790e7fdd6c36774c56b"
dependencies = [
- "clap 4.1.3",
+ "clap 4.1.4",
]
[[package]]
version = "0.1.0"
dependencies = [
"anyhow",
- "clap 4.1.3",
+ "clap 4.1.4",
"fs-err",
"rustdoc-json-types",
"serde",
"ammonia",
"anyhow",
"chrono",
- "clap 4.1.3",
+ "clap 4.1.4",
"clap_complete",
"elasticlunr-rs",
"env_logger 0.10.0",
name = "rustbook"
version = "0.1.0"
dependencies = [
- "clap 4.1.3",
+ "clap 4.1.4",
"env_logger 0.7.1",
"mdbook",
]
version = "0.0.0"
dependencies = [
"bitflags",
+ "memchr",
"rustc_data_structures",
"rustc_index",
"rustc_lexer",
version = "0.0.0"
dependencies = [
"rustc_ast",
+ "rustc_parse_format",
"rustc_span",
]
["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
[dependencies]
bitflags = "1.2.1"
+memchr = "2.5.0"
rustc_data_structures = { path = "../rustc_data_structures" }
rustc_index = { path = "../rustc_index" }
rustc_lexer = { path = "../rustc_lexer" }
//! - [`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$}`.
+ pub precision: Option<FormatCount>,
+ /// The alignment. E.g. `{:>}` or `{:<}` or `{:^}`.
+ pub alignment: Option<FormatAlignment>,
+ /// The fill character. E.g. the `.` in `{:.>10}`.
+ pub fill: Option<char>,
+ /// The `+` or `-` flag.
+ pub sign: Option<FormatSign>,
+ /// The `#` flag.
+ pub alternate: bool,
+ /// The `0` flag. E.g. the `0` in `{:02x}`.
+ pub zero_pad: bool,
+ /// The `x` or `X` flag (for `Debug` only). E.g. the `x` in `{:x?}`.
+ pub debug_hex: Option<FormatDebugHex>,
+}
+
+#[derive(Copy, Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatSign {
+ /// The `+` flag.
+ Plus,
+ /// The `-` flag.
+ Minus,
+}
+
+#[derive(Copy, Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatDebugHex {
+ /// The `x` flag in `{:x?}`.
+ Lower,
+ /// The `X` flag in `{:X?}`.
+ Upper,
+}
+
+#[derive(Copy, Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatAlignment {
+ /// `{:<}`
+ Left,
+ /// `{:>}`
+ Right,
+ /// `{:^}`
+ Center,
+}
+
+#[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq)]
+pub enum FormatCount {
+ /// `{:5}` or `{:.5}`
+ Literal(usize),
+ /// `{:.*}`, `{:.5$}`, or `{:a$}`, etc.
+ Argument(FormatArgPosition),
+}
#![feature(let_chains)]
#![feature(min_specialization)]
#![feature(negative_impls)]
-#![feature(slice_internals)]
#![feature(stmt_expr_attributes)]
#![recursion_limit = "256"]
#![deny(rustc::untranslatable_diagnostic)]
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
// U+2069 - E2 81 A9
let mut bytes = s.as_bytes();
loop {
- match core::slice::memchr::memchr(0xE2, bytes) {
+ match memchr::memchr(0xE2, bytes) {
Some(idx) => {
// bytes are valid UTF-8 -> E2 must be followed by two bytes
let ch = &bytes[idx..idx + 3];
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 &FormatOptions {
+ ref width,
+ ref precision,
+ alignment,
+ fill,
+ sign,
+ alternate,
+ zero_pad,
+ debug_hex,
+ } = &placeholder.format_options;
+ let fill = ctx.expr_char(sp, fill.unwrap_or(' '));
+ let align = ctx.expr_lang_item_type_relative(
+ sp,
+ hir::LangItem::FormatAlignment,
+ match alignment {
+ Some(FormatAlignment::Left) => sym::Left,
+ Some(FormatAlignment::Right) => sym::Right,
+ Some(FormatAlignment::Center) => sym::Center,
+ None => sym::Unknown,
+ },
+ );
+ // This needs to match `FlagV1` in library/core/src/fmt/mod.rs.
+ let flags: u32 = ((sign == Some(FormatSign::Plus)) as u32)
+ | ((sign == Some(FormatSign::Minus)) as u32) << 1
+ | (alternate as u32) << 2
+ | (zero_pad as u32) << 3
+ | ((debug_hex == Some(FormatDebugHex::Lower)) as u32) << 4
+ | ((debug_hex == Some(FormatDebugHex::Upper)) as u32) << 5;
+ let flags = ctx.expr_u32(sp, flags);
+ let precision = make_count(ctx, sp, &precision, argmap);
+ let width = make_count(ctx, sp, &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, precision, 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, FormatDebugHex, FormatSign,
+ 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 => {}
+ }
+ match p.format_options.sign {
+ Some(FormatSign::Plus) => template.push('+'),
+ Some(FormatSign::Minus) => template.push('-'),
+ None => {}
+ }
+ if p.format_options.alternate {
+ template.push('#');
+ }
+ if p.format_options.zero_pad {
+ 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();
+ }
+ }
+ }
+ match p.format_options.debug_hex {
+ Some(FormatDebugHex::Lower) => template.push('x'),
+ Some(FormatDebugHex::Upper) => template.push('X'),
+ None => {}
+ }
+ 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
+}
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,
+ FormatDebugHex, FormatOptions, FormatPlaceholder, FormatSign, 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.
format_options: FormatOptions {
fill: format.fill,
alignment,
- flags: format.flags,
+ sign: format.sign.map(|s| match s {
+ parse::Sign::Plus => FormatSign::Plus,
+ parse::Sign::Minus => FormatSign::Minus,
+ }),
+ alternate: format.alternate,
+ zero_pad: format.zero_pad,
+ debug_hex: format.debug_hex.map(|s| match s {
+ parse::DebugHex::Lower => FormatDebugHex::Lower,
+ parse::DebugHex::Upper => FormatDebugHex::Upper,
+ }),
precision,
width,
},
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),
struct TerminatorCodegenHelper<'tcx> {
bb: mir::BasicBlock,
terminator: &'tcx mir::Terminator<'tcx>,
- funclet_bb: Option<mir::BasicBlock>,
}
impl<'a, 'tcx> TerminatorCodegenHelper<'tcx> {
&self,
fx: &'b mut FunctionCx<'a, 'tcx, Bx>,
) -> Option<&'b Bx::Funclet> {
- let funclet_bb = self.funclet_bb?;
- if base::wants_msvc_seh(fx.cx.tcx().sess) {
- // If `landing_pad_for` hasn't been called yet to create the `Funclet`,
- // it has to be now. This may not seem necessary, as RPO should lead
- // to all the unwind edges being visited (and so to `landing_pad_for`
- // getting called for them), before building any of the blocks inside
- // the funclet itself - however, if MIR contains edges that end up not
- // being needed in the LLVM IR after monomorphization, the funclet may
- // be unreachable, and we don't have yet a way to skip building it in
- // such an eventuality (which may be a better solution than this).
- if fx.funclets[funclet_bb].is_none() {
- fx.landing_pad_for(funclet_bb);
- }
-
- Some(
- fx.funclets[funclet_bb]
- .as_ref()
- .expect("landing_pad_for didn't also create funclets entry"),
- )
- } else {
- None
+ let cleanup_kinds = (&fx.cleanup_kinds).as_ref()?;
+ let funclet_bb = cleanup_kinds[self.bb].funclet_bb(self.bb)?;
+ // If `landing_pad_for` hasn't been called yet to create the `Funclet`,
+ // it has to be now. This may not seem necessary, as RPO should lead
+ // to all the unwind edges being visited (and so to `landing_pad_for`
+ // getting called for them), before building any of the blocks inside
+ // the funclet itself - however, if MIR contains edges that end up not
+ // being needed in the LLVM IR after monomorphization, the funclet may
+ // be unreachable, and we don't have yet a way to skip building it in
+ // such an eventuality (which may be a better solution than this).
+ if fx.funclets[funclet_bb].is_none() {
+ fx.landing_pad_for(funclet_bb);
}
+ Some(
+ fx.funclets[funclet_bb]
+ .as_ref()
+ .expect("landing_pad_for didn't also create funclets entry"),
+ )
}
/// Get a basic block (creating it if necessary), possibly with cleanup
fx: &mut FunctionCx<'a, 'tcx, Bx>,
target: mir::BasicBlock,
) -> (bool, bool) {
- let target_funclet = fx.cleanup_kinds[target].funclet_bb(target);
- let (needs_landing_pad, is_cleanupret) = match (self.funclet_bb, target_funclet) {
- (None, None) => (false, false),
- (None, Some(_)) => (true, false),
- (Some(_), None) => {
- let span = self.terminator.source_info.span;
- span_bug!(span, "{:?} - jump out of cleanup?", self.terminator);
- }
- (Some(f), Some(t_f)) => {
- if f == t_f || !base::wants_msvc_seh(fx.cx.tcx().sess) {
- (false, false)
- } else {
- (true, true)
+ if let Some(ref cleanup_kinds) = fx.cleanup_kinds {
+ let funclet_bb = cleanup_kinds[self.bb].funclet_bb(self.bb);
+ let target_funclet = cleanup_kinds[target].funclet_bb(target);
+ let (needs_landing_pad, is_cleanupret) = match (funclet_bb, target_funclet) {
+ (None, None) => (false, false),
+ (None, Some(_)) => (true, false),
+ (Some(f), Some(t_f)) => (f != t_f, f != t_f),
+ (Some(_), None) => {
+ let span = self.terminator.source_info.span;
+ span_bug!(span, "{:?} - jump out of cleanup?", self.terminator);
}
- }
- };
- (needs_landing_pad, is_cleanupret)
+ };
+ (needs_landing_pad, is_cleanupret)
+ } else {
+ let needs_landing_pad = !fx.mir[self.bb].is_cleanup && fx.mir[target].is_cleanup;
+ let is_cleanupret = false;
+ (needs_landing_pad, is_cleanupret)
+ }
}
fn funclet_br<Bx: BuilderMethods<'a, 'tcx>>(
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!({
) -> MergingSucc {
debug!("codegen_terminator: {:?}", terminator);
- // Create the cleanup bundle, if needed.
- let funclet_bb = self.cleanup_kinds[bb].funclet_bb(bb);
- let helper = TerminatorCodegenHelper { bb, terminator, funclet_bb };
+ let helper = TerminatorCodegenHelper { bb, terminator };
let mergeable_succ = || {
// Note: any call to `switch_to_block` will invalidate a `true` value
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 crate::base;
use crate::traits::*;
use rustc_middle::mir;
use rustc_middle::mir::interpret::ErrorHandled;
cached_llbbs: IndexVec<mir::BasicBlock, CachedLlbb<Bx::BasicBlock>>,
/// The funclet status of each basic block
- cleanup_kinds: IndexVec<mir::BasicBlock, analyze::CleanupKind>,
+ cleanup_kinds: Option<IndexVec<mir::BasicBlock, analyze::CleanupKind>>,
/// When targeting MSVC, this stores the cleanup info for each funclet BB.
/// This is initialized at the same time as the `landing_pads` entry for the
start_bx.set_personality_fn(cx.eh_personality());
}
- let cleanup_kinds = analyze::cleanup_kinds(&mir);
+ let cleanup_kinds =
+ if base::wants_msvc_seh(cx.tcx().sess) { Some(analyze::cleanup_kinds(&mir)) } else { None };
+
let cached_llbbs: IndexVec<mir::BasicBlock, CachedLlbb<Bx::BasicBlock>> =
mir.basic_blocks
.indices()
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)
+ };
}
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 `{$name}` here
mir_build_union_pattern = cannot use unions in constant patterns
[one] trait {$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);
TryDesugar,
/// A desugared `<expr>.await`.
AwaitDesugar,
+ /// A desugared `format_args!()`.
+ FormatArgs,
}
impl MatchSource {
ForLoopDesugar => "for",
TryDesugar => "?",
AwaitDesugar => ".await",
+ FormatArgs => "format_args!()",
}
}
}
/// 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);
|| 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);
}
}
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;
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(
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}"))
use std::{cmp, fmt, iter};
mod note;
+mod note_and_explain;
mod suggest;
pub(crate) mod need_type_info;
}
self.check_and_note_conflicting_crates(diag, terr);
- self.tcx.note_and_explain_type_err(diag, terr, cause, span, cause.body_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()
--- /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()
+ }
+}
return;
}
- let (msg, sugg) = match (expected.is_ref(), found.is_ref()) {
+ 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)
}
};
- diag.span_suggestion(span, msg, &sugg, Applicability::MaybeIncorrect);
+ diag.span_suggestion(span, msg, sug, Applicability::MaybeIncorrect);
}
(ty::FnDef(did1, substs1), ty::FnDef(did2, substs2)) => {
let expected_sig =
let found_sig =
&(self.normalize_fn_sig)(self.tcx.bound_fn_sig(*did2).subst(self.tcx, substs2));
- if self.same_type_modulo_infer(*found_sig, *expected_sig) {
- diag.note(
- "different fn items have unique types, even if their signatures are the same",
- );
+ 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(_, _), ty::FnPtr(_)) => {
- diag.note("fn items are distinct from fn pointers");
+ (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;
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);
.get_attr_flags(def_id.index)
.contains(AttrFlags::MAY_HAVE_DOC_LINKS)
}
+
+ pub fn is_doc_hidden_untracked(&self, def_id: DefId) -> bool {
+ self.get_crate_data(def_id.krate)
+ .get_attr_flags(def_id.index)
+ .contains(AttrFlags::IS_DOC_HIDDEN)
+ }
}
impl CrateStore for CStore {
use crate::rmeta::table::TableBuilder;
use crate::rmeta::*;
+use rustc_ast::util::comments;
use rustc_ast::Attribute;
use rustc_data_structures::fingerprint::Fingerprint;
use rustc_data_structures::fx::{FxHashMap, FxIndexSet};
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;
}
}
+struct AnalyzeAttrState {
+ is_exported: bool,
+ may_have_doc_links: bool,
+ is_doc_hidden: bool,
+}
+
/// Returns whether an attribute needs to be recorded in metadata, that is, if it's usable and
/// useful in downstream crates. Local-only attributes are an obvious example, but some
/// rustdoc-specific attributes can equally be of use while documenting the current crate only.
///
/// Removing these superfluous attributes speeds up compilation by making the metadata smaller.
///
-/// Note: the `is_def_id_public` parameter is used to cache whether the given `DefId` has a public
+/// Note: the `is_exported` parameter is used to cache whether the given `DefId` has a public
/// visibility: this is a piece of data that can be computed once per defid, and not once per
/// attribute. Some attributes would only be usable downstream if they are public.
#[inline]
-fn should_encode_attr(
- tcx: TyCtxt<'_>,
- attr: &Attribute,
- def_id: LocalDefId,
- is_def_id_public: &mut Option<bool>,
-) -> bool {
+fn analyze_attr(attr: &Attribute, state: &mut AnalyzeAttrState) -> bool {
+ let mut should_encode = false;
if rustc_feature::is_builtin_only_local(attr.name_or_empty()) {
// Attributes marked local-only don't need to be encoded for downstream crates.
- false
- } else if attr.doc_str().is_some() {
- // We keep all public doc comments because they might be "imported" into downstream crates
- // if they use `#[doc(inline)]` to copy an item's documentation into their own.
- *is_def_id_public.get_or_insert_with(|| tcx.effective_visibilities(()).is_exported(def_id))
+ } else if let Some(s) = attr.doc_str() {
+ // We keep all doc comments reachable to rustdoc because they might be "imported" into
+ // downstream crates if they use `#[doc(inline)]` to copy an item's documentation into
+ // their own.
+ if state.is_exported {
+ should_encode = true;
+ if comments::may_have_doc_links(s.as_str()) {
+ state.may_have_doc_links = true;
+ }
+ }
} else if attr.has_name(sym::doc) {
- // If this is a `doc` attribute, and it's marked `inline` (as in `#[doc(inline)]`), we can
- // remove it. It won't be inlinable in downstream crates.
- attr.meta_item_list().map(|l| l.iter().any(|l| !l.has_name(sym::inline))).unwrap_or(false)
+ // If this is a `doc` attribute that doesn't have anything except maybe `inline` (as in
+ // `#[doc(inline)]`), then we can remove it. It won't be inlinable in downstream crates.
+ if let Some(item_list) = attr.meta_item_list() {
+ for item in item_list {
+ if !item.has_name(sym::inline) {
+ should_encode = true;
+ if item.has_name(sym::hidden) {
+ state.is_doc_hidden = true;
+ break;
+ }
+ }
+ }
+ }
} else {
- true
+ should_encode = true;
}
+ should_encode
}
fn should_encode_visibility(def_kind: DefKind) -> bool {
impl<'a, 'tcx> EncodeContext<'a, 'tcx> {
fn encode_attrs(&mut self, def_id: LocalDefId) {
let tcx = self.tcx;
- let mut is_public: Option<bool> = None;
-
- let hir_attrs = tcx.hir().attrs(tcx.hir().local_def_id_to_hir_id(def_id));
- let mut attrs = hir_attrs
+ let mut state = AnalyzeAttrState {
+ is_exported: tcx.effective_visibilities(()).is_exported(def_id),
+ may_have_doc_links: false,
+ is_doc_hidden: false,
+ };
+ let attr_iter = tcx
+ .hir()
+ .attrs(tcx.hir().local_def_id_to_hir_id(def_id))
.iter()
- .filter(move |attr| should_encode_attr(tcx, attr, def_id, &mut is_public));
+ .filter(|attr| analyze_attr(attr, &mut state));
+
+ record_array!(self.tables.attributes[def_id.to_def_id()] <- attr_iter);
- record_array!(self.tables.attributes[def_id.to_def_id()] <- attrs.clone());
let mut attr_flags = AttrFlags::empty();
- if attrs.any(|attr| attr.may_have_doc_links()) {
+ if state.may_have_doc_links {
attr_flags |= AttrFlags::MAY_HAVE_DOC_LINKS;
}
- if hir_attrs
- .iter()
- .filter(|attr| attr.has_name(sym::doc))
- .filter_map(|attr| attr.meta_item_list())
- .any(|items| items.iter().any(|item| item.has_name(sym::hidden)))
- {
+ if state.is_doc_hidden {
attr_flags |= AttrFlags::IS_DOC_HIDDEN;
}
if !attr_flags.is_empty() {
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);
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] <-
// 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()
#![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(
/// 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};
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: {:?}) => {:?}",
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 });
}
}
}
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
}
/// 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
// 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) }
}
pub use Alignment::*;
pub use Count::*;
-pub use Flag::*;
pub use Piece::*;
pub use Position::*;
pub fill: Option<char>,
/// Optionally specified alignment.
pub align: Alignment,
- /// Packed version of various flags provided.
- pub flags: u32,
+ /// The `+` or `-` flag.
+ pub sign: Option<Sign>,
+ /// The `#` flag.
+ pub alternate: bool,
+ /// The `0` flag.
+ pub zero_pad: bool,
+ /// The `x` or `X` flag. (Only for `Debug`.)
+ pub debug_hex: Option<DebugHex>,
/// The integer precision to use.
pub precision: Count<'a>,
/// The span of the precision formatting flag (for diagnostics).
AlignUnknown,
}
-/// Various flags which can be applied to format strings. The meaning of these
-/// flags is defined by the formatters themselves.
+/// Enum for the sign flags.
#[derive(Copy, Clone, Debug, PartialEq)]
-pub enum Flag {
- /// A `+` will be used to denote positive numbers.
- FlagSignPlus,
- /// A `-` will be used to denote negative numbers. This is the default.
- FlagSignMinus,
- /// An alternate form will be used for the value. In the case of numbers,
- /// this means that the number will be prefixed with the supplied string.
- FlagAlternate,
- /// For numbers, this means that the number will be padded with zeroes,
- /// and the sign (`+` or `-`) will precede them.
- FlagSignAwareZeroPad,
- /// For Debug / `?`, format integers in lower-case hexadecimal.
- FlagDebugLowerHex,
- /// For Debug / `?`, format integers in upper-case hexadecimal.
- FlagDebugUpperHex,
+pub enum Sign {
+ /// The `+` flag.
+ Plus,
+ /// The `-` flag.
+ Minus,
+}
+
+/// Enum for the debug hex flags.
+#[derive(Copy, Clone, Debug, PartialEq)]
+pub enum DebugHex {
+ /// The `x` flag in `{:x?}`.
+ Lower,
+ /// The `X` flag in `{:X?}`.
+ Upper,
}
/// A count is used for the precision and width parameters of an integer, and
let mut spec = FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
precision_span: None,
width: CountImplied,
}
// Sign flags
if self.consume('+') {
- spec.flags |= 1 << (FlagSignPlus as u32);
+ spec.sign = Some(Sign::Plus);
} else if self.consume('-') {
- spec.flags |= 1 << (FlagSignMinus as u32);
+ spec.sign = Some(Sign::Minus);
}
// Alternate marker
if self.consume('#') {
- spec.flags |= 1 << (FlagAlternate as u32);
+ spec.alternate = true;
}
// Width and precision
let mut havewidth = false;
spec.width_span = Some(self.span(end - 1, end + 1));
havewidth = true;
} else {
- spec.flags |= 1 << (FlagSignAwareZeroPad as u32);
+ spec.zero_pad = true;
}
}
// Optional radix followed by the actual format specifier
if self.consume('x') {
if self.consume('?') {
- spec.flags |= 1 << (FlagDebugLowerHex as u32);
+ spec.debug_hex = Some(DebugHex::Lower);
spec.ty = "?";
} else {
spec.ty = "x";
}
} else if self.consume('X') {
if self.consume('?') {
- spec.flags |= 1 << (FlagDebugUpperHex as u32);
+ spec.debug_hex = Some(DebugHex::Upper);
spec.ty = "?";
} else {
spec.ty = "X";
let mut spec = FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
precision_span: None,
width: CountImplied,
return FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: None,
align: AlignRight,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: Some('0'),
align: AlignLeft,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: Some('*'),
align: AlignLeft,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
precision_span: None,
width: CountIs(10),
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountIs(10),
precision_span: Some(InnerSpan { start: 6, end: 9 }),
width: CountIsParam(10),
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountIs(10),
precision_span: Some(InnerSpan { start: 6, end: 9 }),
width: CountIsParam(0),
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountIsStar(0),
precision_span: Some(InnerSpan { start: 3, end: 5 }),
width: CountImplied,
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountIsParam(10),
width: CountImplied,
precision_span: Some(InnerSpan::new(3, 7)),
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountIsName("b", InnerSpan { start: 6, end: 7 }),
precision_span: Some(InnerSpan { start: 5, end: 8 }),
width: CountIsName("a", InnerSpan { start: 3, end: 4 }),
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountIs(4),
precision_span: Some(InnerSpan { start: 3, end: 5 }),
width: CountImplied,
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: (1 << FlagSignMinus as u32),
+ sign: Some(Sign::Minus),
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: (1 << FlagSignPlus as u32) | (1 << FlagAlternate as u32),
+ sign: Some(Sign::Plus),
+ alternate: true,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
format: FormatSpec {
fill: None,
align: AlignUnknown,
- flags: 0,
+ sign: None,
+ alternate: false,
+ zero_pad: false,
+ debug_hex: None,
precision: CountImplied,
width: CountImplied,
precision_span: None,
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>),
if sess.target.has_thread_local {
ret.insert((sym::target_thread_local, None));
}
+ let mut has_atomic = false;
for (i, align) in [
(8, layout.i8_align.abi),
(16, layout.i16_align.abi),
(128, layout.i128_align.abi),
] {
if i >= min_atomic_width && i <= max_atomic_width {
+ has_atomic = true;
let mut insert_atomic = |s, align: Align| {
ret.insert((sym::target_has_atomic_load_store, Some(Symbol::intern(s))));
if atomic_cas {
}
}
}
+ if sess.is_nightly_build() && has_atomic {
+ ret.insert((sym::target_has_atomic_load_store, None));
+ if atomic_cas {
+ ret.insert((sym::target_has_atomic, None));
+ }
+ }
let panic_strategy = sess.panic_strategy();
ret.insert((sym::panic, Some(panic_strategy.desc_symbol())));
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_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_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 super::{Certainty, InferCtxtEvalExt};
-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::{Certainty, InferCtxtEvalExt};
/// A trait engine using the new trait solver.
///
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;
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_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;
.subst(tcx, &[ty::GenericArg::from(goal.predicate.self_ty())])
}
- ty::Infer(ty::TyVar(..)) | ty::Alias(_, _) | ty::Param(_) | ty::Placeholder(..) => {
+ 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::Infer(ty::FreshTy(..) | ty::FreshIntTy(..) | ty::FreshFloatTy(..))
+ 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()
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.
) -> 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_hir as hir;
use rustc_hir::def_id::DefId;
use rustc_infer::infer::LateBoundRegionConversionTime;
+use rustc_infer::traits::TraitEngine;
+use rustc_infer::traits::TraitEngineExt;
use rustc_middle::dep_graph::{DepKind, DepNodeIndex};
use rustc_middle::mir::interpret::ErrorHandled;
use rustc_middle::ty::abstract_const::NotConstEvaluatable;
use rustc_middle::ty::SubstsRef;
use rustc_middle::ty::{self, EarlyBinder, PolyProjectionPredicate, ToPolyTraitRef, ToPredicate};
use rustc_middle::ty::{Ty, TyCtxt, TypeFoldable, TypeVisitable};
+use rustc_session::config::TraitSolver;
use rustc_span::symbol::sym;
use std::cell::{Cell, RefCell};
obligation: &PredicateObligation<'tcx>,
) -> Result<EvaluationResult, OverflowError> {
self.evaluation_probe(|this| {
- this.evaluate_predicate_recursively(
- TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()),
- obligation.clone(),
- )
+ if this.tcx().sess.opts.unstable_opts.trait_solver != TraitSolver::Next {
+ this.evaluate_predicate_recursively(
+ TraitObligationStackList::empty(&ProvisionalEvaluationCache::default()),
+ obligation.clone(),
+ )
+ } else {
+ this.evaluate_predicates_recursively_in_new_solver([obligation.clone()])
+ }
})
}
where
I: IntoIterator<Item = PredicateObligation<'tcx>> + std::fmt::Debug,
{
- let mut result = EvaluatedToOk;
- for obligation in predicates {
- let eval = self.evaluate_predicate_recursively(stack, obligation.clone())?;
- if let EvaluatedToErr = eval {
- // fast-path - EvaluatedToErr is the top of the lattice,
- // so we don't need to look on the other predicates.
- return Ok(EvaluatedToErr);
- } else {
- result = cmp::max(result, eval);
+ if self.tcx().sess.opts.unstable_opts.trait_solver != TraitSolver::Next {
+ let mut result = EvaluatedToOk;
+ for obligation in predicates {
+ let eval = self.evaluate_predicate_recursively(stack, obligation.clone())?;
+ if let EvaluatedToErr = eval {
+ // fast-path - EvaluatedToErr is the top of the lattice,
+ // so we don't need to look on the other predicates.
+ return Ok(EvaluatedToErr);
+ } else {
+ result = cmp::max(result, eval);
+ }
}
+ Ok(result)
+ } else {
+ self.evaluate_predicates_recursively_in_new_solver(predicates)
}
- Ok(result)
+ }
+
+ /// Evaluates the predicates using the new solver when `-Ztrait-solver=next` is enabled
+ fn evaluate_predicates_recursively_in_new_solver(
+ &mut self,
+ predicates: impl IntoIterator<Item = PredicateObligation<'tcx>>,
+ ) -> Result<EvaluationResult, OverflowError> {
+ let mut fulfill_cx = crate::solve::FulfillmentCtxt::new();
+ fulfill_cx.register_predicate_obligations(self.infcx, predicates);
+ // True errors
+ if !fulfill_cx.select_where_possible(self.infcx).is_empty() {
+ return Ok(EvaluatedToErr);
+ }
+ if !fulfill_cx.select_all_or_error(self.infcx).is_empty() {
+ return Ok(EvaluatedToAmbig);
+ }
+ // Regions and opaques are handled in the `evaluation_probe` by looking at the snapshot
+ Ok(EvaluatedToOk)
}
#[instrument(
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::def_id::{DefId, LocalDefId};
-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.
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
}
// 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 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>,
/// 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.
//! 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);
($_:ident, $($tt:tt)*) => { $($tt)* };
}
-#[cfg(target_has_atomic_load_store = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic_load_store))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic_load_store = "8"))]
macro_rules! atomic_int {
($cfg_cas:meta,
$cfg_align:meta,
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
fn strongest_failure_ordering(order: Ordering) -> Ordering {
match order {
Release => Relaxed,
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_swap<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_swap`.
/// Returns the previous value (like __sync_fetch_and_add).
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_add<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_add`.
/// Returns the previous value (like __sync_fetch_and_sub).
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_sub<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_sub`.
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_compare_exchange<T: Copy>(
dst: *mut T,
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_compare_exchange_weak<T: Copy>(
dst: *mut T,
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_and<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_and`
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_nand<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_nand`
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_or<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_or`
}
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_xor<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_xor`
/// returns the max value (signed comparison)
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_max<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_max`
/// returns the min value (signed comparison)
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_min<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_min`
/// returns the max value (unsigned comparison)
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_umax<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_umax`
/// returns the min value (unsigned comparison)
#[inline]
-#[cfg(target_has_atomic = "8")]
+#[cfg_attr(not(bootstrap), cfg(target_has_atomic))]
+#[cfg_attr(bootstrap, cfg(target_has_atomic = "8"))]
#[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
unsafe fn atomic_umin<T: Copy>(dst: *mut T, val: T, order: Ordering) -> T {
// SAFETY: the caller must uphold the safety contract for `atomic_umin`
///
/// 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
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
+}
config.changelog_seen = toml.changelog_seen;
let build = toml.build.unwrap_or_default();
+ if let Some(file_build) = build.build {
+ config.build = TargetSelection::from_user(&file_build);
+ };
set(&mut config.out, flags.build_dir.or_else(|| build.build_dir.map(PathBuf::from)));
// NOTE: Bootstrap spawns various commands with different working directories.
assert_eq!(parse_llvm(""), if_available);
assert_eq!(parse_llvm("rust.channel = \"dev\""), if_available);
assert!(!parse_llvm("rust.channel = \"stable\""));
+ assert!(parse_llvm("build.build = \"x86_64-unknown-linux-gnu\""));
+ assert!(parse_llvm(
+ "llvm.assertions = true \r\n build.build = \"x86_64-unknown-linux-gnu\" \r\n llvm.download-ci-llvm = \"if-available\""
+ ));
+ assert!(!parse_llvm(
+ "llvm.assertions = true \r\n build.build = \"aarch64-apple-darwin\" \r\n llvm.download-ci-llvm = \"if-available\""
+ ));
}
// FIXME: add test for detecting `src` and `out`
// https://doc.rust-lang.org/rustc/platform-support.html#tier-1
let supported_platforms = [
// tier 1
- "aarch64-unknown-linux-gnu",
- "i686-pc-windows-gnu",
- "i686-pc-windows-msvc",
- "i686-unknown-linux-gnu",
- "x86_64-unknown-linux-gnu",
- "x86_64-apple-darwin",
- "x86_64-pc-windows-gnu",
- "x86_64-pc-windows-msvc",
+ ("aarch64-unknown-linux-gnu", false),
+ ("i686-pc-windows-gnu", false),
+ ("i686-pc-windows-msvc", false),
+ ("i686-unknown-linux-gnu", false),
+ ("x86_64-unknown-linux-gnu", true),
+ ("x86_64-apple-darwin", true),
+ ("x86_64-pc-windows-gnu", true),
+ ("x86_64-pc-windows-msvc", true),
// tier 2 with host tools
- "aarch64-apple-darwin",
- "aarch64-pc-windows-msvc",
- "aarch64-unknown-linux-musl",
- "arm-unknown-linux-gnueabi",
- "arm-unknown-linux-gnueabihf",
- "armv7-unknown-linux-gnueabihf",
- "mips-unknown-linux-gnu",
- "mips64-unknown-linux-gnuabi64",
- "mips64el-unknown-linux-gnuabi64",
- "mipsel-unknown-linux-gnu",
- "powerpc-unknown-linux-gnu",
- "powerpc64-unknown-linux-gnu",
- "powerpc64le-unknown-linux-gnu",
- "riscv64gc-unknown-linux-gnu",
- "s390x-unknown-linux-gnu",
- "x86_64-unknown-freebsd",
- "x86_64-unknown-illumos",
- "x86_64-unknown-linux-musl",
- "x86_64-unknown-netbsd",
+ ("aarch64-apple-darwin", false),
+ ("aarch64-pc-windows-msvc", false),
+ ("aarch64-unknown-linux-musl", false),
+ ("arm-unknown-linux-gnueabi", false),
+ ("arm-unknown-linux-gnueabihf", false),
+ ("armv7-unknown-linux-gnueabihf", false),
+ ("mips-unknown-linux-gnu", false),
+ ("mips64-unknown-linux-gnuabi64", false),
+ ("mips64el-unknown-linux-gnuabi64", false),
+ ("mipsel-unknown-linux-gnu", false),
+ ("powerpc-unknown-linux-gnu", false),
+ ("powerpc64-unknown-linux-gnu", false),
+ ("powerpc64le-unknown-linux-gnu", false),
+ ("riscv64gc-unknown-linux-gnu", false),
+ ("s390x-unknown-linux-gnu", false),
+ ("x86_64-unknown-freebsd", false),
+ ("x86_64-unknown-illumos", false),
+ ("x86_64-unknown-linux-musl", false),
+ ("x86_64-unknown-netbsd", false),
];
- if !supported_platforms.contains(&&*config.build.triple) {
- return false;
- }
- let triple = &*config.build.triple;
- if (triple == "aarch64-unknown-linux-gnu" || triple.contains("i686")) && asserts {
- // No alt builder for aarch64-unknown-linux-gnu today.
- return false;
+ if !supported_platforms.contains(&(&*config.build.triple, asserts)) {
+ if asserts == true || !supported_platforms.contains(&(&*config.build.triple, true)) {
+ return false;
+ }
}
if CiEnv::is_ci() {
use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap, FxIndexSet, IndexEntry};
use rustc_hir as hir;
use rustc_hir::def::{CtorKind, DefKind, Res};
-use rustc_hir::def_id::{DefId, DefIdMap, DefIdSet, LOCAL_CRATE};
+use rustc_hir::def_id::{DefId, DefIdMap, DefIdSet, LocalDefId, LOCAL_CRATE};
use rustc_hir::PredicateOrigin;
use rustc_hir_analysis::hir_ty_to_ty;
use rustc_infer::infer::region_constraints::{Constraint, RegionConstraintData};
}
});
- Item::from_hir_id_and_parts(doc.id, Some(doc.name), ModuleItem(Module { items, span }), cx)
+ let kind = ModuleItem(Module { items, span });
+ Item::from_def_id_and_parts(doc.def_id.to_def_id(), Some(doc.name), kind, cx)
}
fn clean_generic_bound<'tcx>(
map: rustc_middle::hir::map::Map<'hir>,
item: Option<&'hir hir::Item<'hir>>,
looking_for: Ident,
- target_hir_id: hir::HirId,
+ target_def_id: LocalDefId,
}
impl<'hir> OneLevelVisitor<'hir> {
- fn new(map: rustc_middle::hir::map::Map<'hir>, target_hir_id: hir::HirId) -> Self {
- Self { map, item: None, looking_for: Ident::empty(), target_hir_id }
+ fn new(map: rustc_middle::hir::map::Map<'hir>, target_def_id: LocalDefId) -> Self {
+ Self { map, item: None, looking_for: Ident::empty(), target_def_id }
}
fn reset(&mut self, looking_for: Ident) {
if self.item.is_none()
&& item.ident == self.looking_for
&& matches!(item.kind, hir::ItemKind::Use(_, _))
- || item.hir_id() == self.target_hir_id
+ || item.owner_id.def_id == self.target_def_id
{
self.item = Some(item);
}
fn get_all_import_attributes<'hir>(
mut item: &hir::Item<'hir>,
tcx: TyCtxt<'hir>,
- target_hir_id: hir::HirId,
+ target_def_id: LocalDefId,
attributes: &mut Vec<ast::Attribute>,
) {
let hir_map = tcx.hir();
- let mut visitor = OneLevelVisitor::new(hir_map, target_hir_id);
+ let mut visitor = OneLevelVisitor::new(hir_map, target_def_id);
// If the item is an import and has at least a path with two parts, we go into it.
while let hir::ItemKind::Use(path, _) = item.kind &&
path.segments.len() > 1 &&
cx: &mut DocContext<'tcx>,
item: &hir::Item<'tcx>,
renamed: Option<Symbol>,
- import_id: Option<hir::HirId>,
+ import_id: Option<LocalDefId>,
) -> Vec<Item> {
use hir::ItemKind;
generics: clean_generics(generics, cx),
fields: variant_data.fields().iter().map(|x| clean_field(x, cx)).collect(),
}),
- ItemKind::Impl(impl_) => return clean_impl(impl_, item.hir_id(), cx),
+ ItemKind::Impl(impl_) => return clean_impl(impl_, item.owner_id.def_id, cx),
// proc macros can have a name set by attributes
ItemKind::Fn(ref sig, generics, body_id) => {
clean_fn_or_proc_macro(item, sig, generics, body_id, &mut name, cx)
let mut extra_attrs = Vec::new();
if let Some(hir::Node::Item(use_node)) =
- import_id.and_then(|hir_id| cx.tcx.hir().find(hir_id))
+ import_id.and_then(|def_id| cx.tcx.hir().find_by_def_id(def_id))
{
// We get all the various imports' attributes.
- get_all_import_attributes(use_node, cx.tcx, item.hir_id(), &mut extra_attrs);
+ get_all_import_attributes(use_node, cx.tcx, item.owner_id.def_id, &mut extra_attrs);
}
if !extra_attrs.is_empty() {
fn clean_variant<'tcx>(variant: &hir::Variant<'tcx>, cx: &mut DocContext<'tcx>) -> Item {
let kind = VariantItem(clean_variant_data(&variant.data, &variant.disr_expr, cx));
- Item::from_hir_id_and_parts(variant.hir_id, Some(variant.ident.name), kind, cx)
+ Item::from_def_id_and_parts(variant.def_id.to_def_id(), Some(variant.ident.name), kind, cx)
}
fn clean_impl<'tcx>(
impl_: &hir::Impl<'tcx>,
- hir_id: hir::HirId,
+ def_id: LocalDefId,
cx: &mut DocContext<'tcx>,
) -> Vec<Item> {
let tcx = cx.tcx;
.iter()
.map(|ii| clean_impl_item(tcx.hir().impl_item(ii.id), cx))
.collect::<Vec<_>>();
- let def_id = tcx.hir().local_def_id(hir_id);
// If this impl block is an implementation of the Deref trait, then we
// need to try inlining the target's inherent impl blocks as well.
ImplKind::Normal
},
}));
- Item::from_hir_id_and_parts(hir_id, None, kind, cx)
+ Item::from_def_id_and_parts(def_id.to_def_id(), None, kind, cx)
};
if let Some(type_alias) = type_alias {
ret.push(make_item(trait_.clone(), type_alias, items.clone()));
hir::ForeignItemKind::Type => ForeignTypeItem,
};
- Item::from_hir_id_and_parts(
- item.hir_id(),
+ Item::from_def_id_and_parts(
+ item.owner_id.def_id.to_def_id(),
Some(renamed.unwrap_or(item.ident.name)),
kind,
cx,
self.attrs.doc_value()
}
- /// Convenience wrapper around [`Self::from_def_id_and_parts`] which converts
- /// `hir_id` to a [`DefId`]
- pub(crate) fn from_hir_id_and_parts(
- hir_id: hir::HirId,
- name: Option<Symbol>,
- kind: ItemKind,
- cx: &mut DocContext<'_>,
- ) -> Item {
- Item::from_def_id_and_parts(cx.tcx.hir().local_def_id(hir_id).to_def_id(), name, kind, cx)
- }
-
pub(crate) fn from_def_id_and_parts(
def_id: DefId,
name: Option<Symbol>,
pub(crate) fn is_literal(&self, tcx: TyCtxt<'_>) -> bool {
match *self {
- ConstantKind::TyConst { .. } => false,
- ConstantKind::Extern { def_id } => def_id.as_local().map_or(false, |def_id| {
- is_literal_expr(tcx, tcx.hir().local_def_id_to_hir_id(def_id))
- }),
+ ConstantKind::TyConst { .. } | ConstantKind::Extern { .. } => false,
ConstantKind::Local { body, .. } | ConstantKind::Anonymous { body } => {
is_literal_expr(tcx, body.hir_id)
}
pub(crate) fn krate(cx: &mut DocContext<'_>) -> Crate {
let module = crate::visit_ast::RustdocVisitor::new(cx).visit();
- for &cnum in cx.tcx.crates(()) {
- // Analyze doc-reachability for extern items
- crate::visit_lib::lib_embargo_visit_item(cx, cnum.as_def_id());
- }
-
// Clean the crate, translating the entire librustc_ast AST to one that is
// understood by rustdoc.
let mut module = clean_doc_module(&module, cx);
pub(crate) traits_in_scope: DefIdMap<Vec<TraitCandidate>>,
pub(crate) all_trait_impls: Option<Vec<DefId>>,
pub(crate) all_macro_rules: FxHashMap<Symbol, Res<NodeId>>,
+ pub(crate) extern_doc_reachable: DefIdSet,
}
pub(crate) struct DocContext<'tcx> {
show_coverage,
};
+ ctxt.cache
+ .effective_visibilities
+ .init(mem::take(&mut ctxt.resolver_caches.extern_doc_reachable));
+
// Small hack to force the Sized trait to be present.
//
// Note that in case of `#![no_core]`, the trait is not available.
use rustc_data_structures::fx::{FxHashMap, FxHashSet};
use rustc_data_structures::sync::Lrc;
use rustc_errors::{ColorConfig, ErrorGuaranteed, FatalError};
-use rustc_hir as hir;
-use rustc_hir::def_id::LOCAL_CRATE;
-use rustc_hir::intravisit;
-use rustc_hir::{HirId, CRATE_HIR_ID};
+use rustc_hir::def_id::{LocalDefId, CRATE_DEF_ID, LOCAL_CRATE};
+use rustc_hir::{self as hir, intravisit, CRATE_HIR_ID};
use rustc_interface::interface;
use rustc_middle::hir::map::Map;
use rustc_middle::hir::nested_filter;
};
hir_collector.visit_testable(
"".to_string(),
- CRATE_HIR_ID,
+ CRATE_DEF_ID,
tcx.hir().span(CRATE_HIR_ID),
|this| tcx.hir().walk_toplevel_module(this),
);
fn visit_testable<F: FnOnce(&mut Self)>(
&mut self,
name: String,
- hir_id: HirId,
+ def_id: LocalDefId,
sp: Span,
nested: F,
) {
- let ast_attrs = self.tcx.hir().attrs(hir_id);
+ let ast_attrs = self.tcx.hir().attrs(self.tcx.hir().local_def_id_to_hir_id(def_id));
if let Some(ref cfg) = ast_attrs.cfg(self.tcx, &FxHashSet::default()) {
if !cfg.matches(&self.sess.parse_sess, Some(self.tcx.features())) {
return;
self.collector.enable_per_target_ignores,
Some(&crate::html::markdown::ExtraInfo::new(
self.tcx,
- hir_id,
+ def_id.to_def_id(),
span_of_attrs(&attrs).unwrap_or(sp),
)),
);
_ => item.ident.to_string(),
};
- self.visit_testable(name, item.hir_id(), item.span, |this| {
+ self.visit_testable(name, item.owner_id.def_id, item.span, |this| {
intravisit::walk_item(this, item);
});
}
fn visit_trait_item(&mut self, item: &'hir hir::TraitItem<'_>) {
- self.visit_testable(item.ident.to_string(), item.hir_id(), item.span, |this| {
+ self.visit_testable(item.ident.to_string(), item.owner_id.def_id, item.span, |this| {
intravisit::walk_trait_item(this, item);
});
}
fn visit_impl_item(&mut self, item: &'hir hir::ImplItem<'_>) {
- self.visit_testable(item.ident.to_string(), item.hir_id(), item.span, |this| {
+ self.visit_testable(item.ident.to_string(), item.owner_id.def_id, item.span, |this| {
intravisit::walk_impl_item(this, item);
});
}
fn visit_foreign_item(&mut self, item: &'hir hir::ForeignItem<'_>) {
- self.visit_testable(item.ident.to_string(), item.hir_id(), item.span, |this| {
+ self.visit_testable(item.ident.to_string(), item.owner_id.def_id, item.span, |this| {
intravisit::walk_foreign_item(this, item);
});
}
fn visit_variant(&mut self, v: &'hir hir::Variant<'_>) {
- self.visit_testable(v.ident.to_string(), v.hir_id, v.span, |this| {
+ self.visit_testable(v.ident.to_string(), v.def_id, v.span, |this| {
intravisit::walk_variant(this, v);
});
}
fn visit_field_def(&mut self, f: &'hir hir::FieldDef<'_>) {
- self.visit_testable(f.ident.to_string(), f.hir_id, f.span, |this| {
+ self.visit_testable(f.ident.to_string(), f.def_id, f.span, |this| {
intravisit::walk_field_def(this, f);
});
}
use rustc_data_structures::fx::FxHashMap;
use rustc_hir::def_id::DefId;
-use rustc_hir::HirId;
use rustc_middle::ty::TyCtxt;
use rustc_span::edition::Edition;
use rustc_span::{Span, Symbol};
let channel = if test.contains("#![feature(") { "&version=nightly" } else { "" };
// These characters don't need to be escaped in a URI.
- // FIXME: use a library function for percent encoding.
+ // See https://url.spec.whatwg.org/#query-percent-encode-set
+ // and https://url.spec.whatwg.org/#urlencoded-parsing
+ // and https://url.spec.whatwg.org/#url-code-points
fn dont_escape(c: u8) -> bool {
(b'a' <= c && c <= b'z')
|| (b'A' <= c && c <= b'Z')
|| c == b'-'
|| c == b'_'
|| c == b'.'
+ || c == b','
|| c == b'~'
|| c == b'!'
|| c == b'\''
|| c == b'('
|| c == b')'
|| c == b'*'
+ || c == b'/'
+ || c == b';'
+ || c == b':'
+ || c == b'?'
+ // As described in urlencoded-parsing, the
+ // first `=` is the one that separates key from
+ // value. Following `=`s are part of the value.
+ || c == b'='
}
let mut test_escaped = String::new();
for b in test.bytes() {
if dont_escape(b) {
test_escaped.push(char::from(b));
+ } else if b == b' ' {
+ // URL queries are decoded with + replaced with SP
+ test_escaped.push('+');
+ } else if b == b'%' {
+ test_escaped.push('%');
+ test_escaped.push('%');
} else {
write!(test_escaped, "%{:02X}", b).unwrap();
}
}
pub(crate) struct ExtraInfo<'tcx> {
- id: ExtraInfoId,
+ def_id: DefId,
sp: Span,
tcx: TyCtxt<'tcx>,
}
-enum ExtraInfoId {
- Hir(HirId),
- Def(DefId),
-}
-
impl<'tcx> ExtraInfo<'tcx> {
- pub(crate) fn new(tcx: TyCtxt<'tcx>, hir_id: HirId, sp: Span) -> ExtraInfo<'tcx> {
- ExtraInfo { id: ExtraInfoId::Hir(hir_id), sp, tcx }
- }
-
- pub(crate) fn new_did(tcx: TyCtxt<'tcx>, did: DefId, sp: Span) -> ExtraInfo<'tcx> {
- ExtraInfo { id: ExtraInfoId::Def(did), sp, tcx }
+ pub(crate) fn new(tcx: TyCtxt<'tcx>, def_id: DefId, sp: Span) -> ExtraInfo<'tcx> {
+ ExtraInfo { def_id, sp, tcx }
}
fn error_invalid_codeblock_attr(&self, msg: &str, help: &str) {
- let hir_id = match self.id {
- ExtraInfoId::Hir(hir_id) => hir_id,
- ExtraInfoId::Def(item_did) => {
- match item_did.as_local() {
- Some(item_did) => self.tcx.hir().local_def_id_to_hir_id(item_did),
- None => {
- // If non-local, no need to check anything.
- return;
- }
- }
- }
- };
- self.tcx.struct_span_lint_hir(
- crate::lint::INVALID_CODEBLOCK_ATTRIBUTES,
- hir_id,
- self.sp,
- msg,
- |lint| lint.help(help),
- );
+ if let Some(def_id) = self.def_id.as_local() {
+ self.tcx.struct_span_lint_hir(
+ crate::lint::INVALID_CODEBLOCK_ATTRIBUTES,
+ self.tcx.hir().local_def_id_to_hir_id(def_id),
+ self.sp,
+ msg,
+ |lint| lint.help(help),
+ );
+ }
}
}
};
write!(
w,
- "<div class=\"item-left {stab}{add}import-item\"{id}>\
+ "<div class=\"item-left{add}{stab}\"{id}>\
<code>{vis}{imp}</code>\
</div>\
{stab_tags_before}{stab_tags}{stab_tags_after}",
};
write!(
w,
- "<div class=\"item-left {stab}{add}module-item\">\
+ "<div class=\"item-left{add}{stab}\">\
<a class=\"{class}\" href=\"{href}\" title=\"{title}\">{name}</a>\
{visibility_emoji}\
{unsafety_flag}\
stab = stab.unwrap_or_default(),
unsafety_flag = unsafety_flag,
href = item_path(myitem.type_(), myitem.name.unwrap().as_str()),
- title = [full_path(cx, myitem), myitem.type_().to_string()]
+ title = [myitem.type_().to_string(), full_path(cx, myitem)]
.iter()
.filter_map(|s| if !s.is_empty() { Some(s.as_str()) } else { None })
.collect::<Vec<_>>()
0 -1px 0 black;
}
-.module-item.unstable,
-.import-item.unstable {
+.item-left.unstable {
opacity: 0.65;
}
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", || {
);
let has_doc_example = tests.found_tests != 0;
- // The `expect_def_id()` should be okay because `local_def_id_to_hir_id`
- // would presumably panic if a fake `DefIndex` were passed.
- let hir_id = self
- .ctx
- .tcx
- .hir()
- .local_def_id_to_hir_id(i.item_id.expect_def_id().expect_local());
+ let hir_id = DocContext::as_local_hir_id(self.ctx.tcx, i.item_id).unwrap();
let (level, source) = self.ctx.tcx.lint_level_at_node(MISSING_DOCS, hir_id);
// In case we have:
use crate::visit_ast::inherits_doc_hidden;
use rustc_hir as hir;
use rustc_middle::lint::LintLevelSource;
+use rustc_middle::ty::DefIdTree;
use rustc_session::lint;
-use rustc_span::symbol::sym;
pub(crate) const CHECK_DOC_TEST_VISIBILITY: Pass = Pass {
name: "check_doc_test_visibility",
// The `expect_def_id()` should be okay because `local_def_id_to_hir_id`
// would presumably panic if a fake `DefIndex` were passed.
- let hir_id = cx.tcx.hir().local_def_id_to_hir_id(item.item_id.expect_def_id().expect_local());
+ let def_id = item.item_id.expect_def_id().expect_local();
// check if parent is trait impl
- if let Some(parent_hir_id) = cx.tcx.hir().opt_parent_id(hir_id) {
- if let Some(parent_node) = cx.tcx.hir().find(parent_hir_id) {
+ if let Some(parent_def_id) = cx.tcx.opt_local_parent(def_id) {
+ if let Some(parent_node) = cx.tcx.hir().find_by_def_id(parent_def_id) {
if matches!(
parent_node,
hir::Node::Item(hir::Item {
}
}
- if cx.tcx.hir().attrs(hir_id).lists(sym::doc).has_word(sym::hidden)
- || inherits_doc_hidden(cx.tcx, hir_id)
- || cx.tcx.hir().span(hir_id).in_derive_expansion()
+ if cx.tcx.is_doc_hidden(def_id.to_def_id())
+ || inherits_doc_hidden(cx.tcx, def_id)
+ || cx.tcx.def_span(def_id.to_def_id()).in_derive_expansion()
{
return false;
}
- let (level, source) = cx.tcx.lint_level_at_node(crate::lint::MISSING_DOC_CODE_EXAMPLES, hir_id);
+ let (level, source) = cx.tcx.lint_level_at_node(
+ crate::lint::MISSING_DOC_CODE_EXAMPLES,
+ cx.tcx.hir().local_def_id_to_hir_id(def_id),
+ );
level != lint::Level::Allow || matches!(source, LintLevelSource::Default)
}
}
// item can be non-local e.g. when using #[doc(primitive = "pointer")]
- if let Some((src_id, dst_id)) = id
- .as_local()
- // The `expect_def_id()` should be okay because `local_def_id_to_hir_id`
- // would presumably panic if a fake `DefIndex` were passed.
- .and_then(|dst_id| {
- item.item_id.expect_def_id().as_local().map(|src_id| (src_id, dst_id))
- })
- {
+ if let Some((src_id, dst_id)) = id.as_local().and_then(|dst_id| {
+ item.item_id.expect_def_id().as_local().map(|src_id| (src_id, dst_id))
+ }) {
if self.cx.tcx.effective_visibilities(()).is_exported(src_id)
&& !self.cx.tcx.effective_visibilities(()).is_exported(dst_id)
{
use crate::core::ResolverCaches;
use crate::passes::collect_intra_doc_links::preprocessed_markdown_links;
use crate::passes::collect_intra_doc_links::{Disambiguator, PreprocessedMarkdownLink};
+use crate::visit_lib::early_lib_embargo_visit_item;
use rustc_ast::visit::{self, AssocCtxt, Visitor};
use rustc_ast::{self as ast, ItemKind};
traits_in_scope: Default::default(),
all_trait_impls: Default::default(),
all_macro_rules: Default::default(),
+ extern_doc_reachable: Default::default(),
+ local_doc_reachable: Default::default(),
document_private_items,
};
traits_in_scope: link_resolver.traits_in_scope,
all_trait_impls: Some(link_resolver.all_trait_impls),
all_macro_rules: link_resolver.all_macro_rules,
+ extern_doc_reachable: link_resolver.extern_doc_reachable,
}
}
traits_in_scope: DefIdMap<Vec<TraitCandidate>>,
all_trait_impls: Vec<DefId>,
all_macro_rules: FxHashMap<Symbol, Res<ast::NodeId>>,
+ /// This set is used as a seed for `effective_visibilities`, which are then extended by some
+ /// more items using `lib_embargo_visit_item` during doc inlining.
+ extern_doc_reachable: DefIdSet,
+ /// This is an easily identifiable superset of items added to `effective_visibilities`
+ /// using `lib_embargo_visit_item` during doc inlining.
+ /// The union of `(extern,local)_doc_reachable` is therefore a superset of
+ /// `effective_visibilities` and can be used for pruning extern impls here
+ /// in early doc link resolution.
+ local_doc_reachable: DefIdSet,
document_private_items: bool,
}
}
}
+ fn is_doc_reachable(&self, def_id: DefId) -> bool {
+ self.extern_doc_reachable.contains(&def_id) || self.local_doc_reachable.contains(&def_id)
+ }
+
/// Add traits in scope for links in impls collected by the `collect-intra-doc-links` pass.
/// That pass filters impls using type-based information, but we don't yet have such
/// information here, so we just conservatively calculate traits in scope for *all* modules
let mut start_cnum = 0;
loop {
let crates = Vec::from_iter(self.resolver.cstore().crates_untracked());
+ for cnum in &crates[start_cnum..] {
+ early_lib_embargo_visit_item(
+ self.resolver,
+ &mut self.extern_doc_reachable,
+ cnum.as_def_id(),
+ true,
+ );
+ }
for &cnum in &crates[start_cnum..] {
let all_trait_impls =
Vec::from_iter(self.resolver.cstore().trait_impls_in_crate_untracked(cnum));
// privacy, private traits and impls from other crates are never documented in
// the current crate, and links in their doc comments are not resolved.
for &(trait_def_id, impl_def_id, simplified_self_ty) in &all_trait_impls {
- if self.resolver.cstore().visibility_untracked(trait_def_id).is_public()
- && simplified_self_ty.and_then(|ty| ty.def()).map_or(true, |ty_def_id| {
- self.resolver.cstore().visibility_untracked(ty_def_id).is_public()
- })
+ if self.is_doc_reachable(trait_def_id)
+ && simplified_self_ty
+ .and_then(|ty| ty.def())
+ .map_or(true, |ty_def_id| self.is_doc_reachable(ty_def_id))
{
if self.visited_mods.insert(trait_def_id) {
self.resolve_doc_links_extern_impl(trait_def_id, false);
}
self.resolve_doc_links_extern_impl(impl_def_id, false);
}
+ self.all_trait_impls.push(impl_def_id);
}
for (ty_def_id, impl_def_id) in all_inherent_impls {
- if self.resolver.cstore().visibility_untracked(ty_def_id).is_public() {
+ if self.is_doc_reachable(ty_def_id) {
self.resolve_doc_links_extern_impl(impl_def_id, true);
}
}
for impl_def_id in all_incoherent_impls {
self.resolve_doc_links_extern_impl(impl_def_id, true);
}
-
- self.all_trait_impls
- .extend(all_trait_impls.into_iter().map(|(_, def_id, _)| def_id));
}
if crates.len() > start_cnum {
&& module_id.is_local()
{
if let Some(def_id) = child.res.opt_def_id() && !def_id.is_local() {
+ self.local_doc_reachable.insert(def_id);
let scope_id = match child.res {
Res::Def(
DefKind::Variant
pub(crate) fn visit_item(cx: &DocContext<'_>, item: &clean::Item) {
if let Some(dox) = &item.attrs.collapsed_doc_value() {
let sp = item.attr_span(cx.tcx);
- let extra =
- crate::html::markdown::ExtraInfo::new_did(cx.tcx, item.item_id.expect_def_id(), sp);
+ let extra = crate::html::markdown::ExtraInfo::new(cx.tcx, item.item_id.expect_def_id(), sp);
for code_block in markdown::rust_code_blocks(dox, &extra) {
check_rust_syntax(cx, item, dox, code_block);
}
return;
};
- let hir_id = cx.tcx.hir().local_def_id_to_hir_id(local_id);
let empty_block = code_block.lang_string == Default::default() && code_block.is_fenced;
let is_ignore = code_block.lang_string.ignore != markdown::Ignore::None;
// Finally build and emit the completed diagnostic.
// All points of divergence have been handled earlier so this can be
// done the same way whether the span is precise or not.
+ let hir_id = cx.tcx.hir().local_def_id_to_hir_id(local_id);
cx.tcx.struct_span_lint_hir(crate::lint::INVALID_RUST_CODEBLOCKS, hir_id, sp, msg, |lint| {
let explanation = if is_ignore {
"`ignore` code blocks require valid Rust code for syntax highlighting; \
use crate::passes::Pass;
use rustc_hir::def_id::LocalDefId;
+use rustc_middle::ty::DefIdTree;
pub(crate) const PROPAGATE_DOC_CFG: Pass = Pass {
name: "propagate-doc-cfg",
let Some(def_id) = item.item_id.as_def_id().and_then(|def_id| def_id.as_local())
else { return };
- let hir = self.cx.tcx.hir();
- let hir_id = hir.local_def_id_to_hir_id(def_id);
-
if check_parent {
- let expected_parent = hir.get_parent_item(hir_id);
+ let expected_parent = self.cx.tcx.opt_local_parent(def_id);
// If parents are different, it means that `item` is a reexport and we need
// to compute the actual `cfg` by iterating through its "real" parents.
- if self.parent == Some(expected_parent.def_id) {
+ if self.parent.is_some() && self.parent == expected_parent {
return;
}
}
let mut attrs = Vec::new();
- for (parent_hir_id, _) in hir.parent_iter(hir_id) {
- if let Some(def_id) = hir.opt_local_def_id(parent_hir_id) {
- attrs.extend_from_slice(load_attrs(self.cx, def_id.to_def_id()));
- }
+ let mut next_def_id = def_id;
+ while let Some(parent_def_id) = self.cx.tcx.opt_local_parent(next_def_id) {
+ attrs.extend_from_slice(load_attrs(self.cx, parent_def_id.to_def_id()));
+ next_def_id = parent_def_id;
}
+
let (_, cfg) = merge_attrs(self.cx, None, item.attrs.other_attrs.as_slice(), Some(&attrs));
item.cfg = cfg;
}
use rustc_data_structures::fx::FxHashSet;
use rustc_hir as hir;
use rustc_hir::def::{DefKind, Res};
-use rustc_hir::def_id::{DefId, DefIdMap};
-use rustc_hir::{HirIdSet, Node, CRATE_HIR_ID};
-use rustc_middle::ty::TyCtxt;
+use rustc_hir::def_id::{DefId, DefIdMap, LocalDefId, LocalDefIdSet};
+use rustc_hir::{Node, CRATE_HIR_ID};
+use rustc_middle::ty::{DefIdTree, TyCtxt};
use rustc_span::def_id::{CRATE_DEF_ID, LOCAL_CRATE};
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_span::Span;
pub(crate) name: Symbol,
pub(crate) where_inner: Span,
pub(crate) mods: Vec<Module<'hir>>,
- pub(crate) id: hir::HirId,
+ pub(crate) def_id: LocalDefId,
// (item, renamed, import_id)
- pub(crate) items: Vec<(&'hir hir::Item<'hir>, Option<Symbol>, Option<hir::HirId>)>,
+ pub(crate) items: Vec<(&'hir hir::Item<'hir>, Option<Symbol>, Option<LocalDefId>)>,
pub(crate) foreigns: Vec<(&'hir hir::ForeignItem<'hir>, Option<Symbol>)>,
}
impl Module<'_> {
- pub(crate) fn new(name: Symbol, id: hir::HirId, where_inner: Span) -> Self {
- Module { name, id, where_inner, mods: Vec::new(), items: Vec::new(), foreigns: Vec::new() }
+ pub(crate) fn new(name: Symbol, def_id: LocalDefId, where_inner: Span) -> Self {
+ Module {
+ name,
+ def_id,
+ where_inner,
+ mods: Vec::new(),
+ items: Vec::new(),
+ foreigns: Vec::new(),
+ }
}
pub(crate) fn where_outer(&self, tcx: TyCtxt<'_>) -> Span {
- tcx.hir().span(self.id)
+ tcx.def_span(self.def_id)
}
}
std::iter::once(crate_name).chain(relative).collect()
}
-pub(crate) fn inherits_doc_hidden(tcx: TyCtxt<'_>, mut node: hir::HirId) -> bool {
- while let Some(id) = tcx.hir().get_enclosing_scope(node) {
+pub(crate) fn inherits_doc_hidden(tcx: TyCtxt<'_>, mut node: LocalDefId) -> bool {
+ while let Some(id) = tcx.opt_local_parent(node) {
node = id;
- if tcx.hir().attrs(node).lists(sym::doc).has_word(sym::hidden) {
+ if tcx.is_doc_hidden(node.to_def_id()) {
return true;
}
}
pub(crate) struct RustdocVisitor<'a, 'tcx> {
cx: &'a mut core::DocContext<'tcx>,
- view_item_stack: HirIdSet,
+ view_item_stack: LocalDefIdSet,
inlining: bool,
/// Are the current module and all of its parents public?
inside_public_path: bool,
impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> {
pub(crate) fn new(cx: &'a mut core::DocContext<'tcx>) -> RustdocVisitor<'a, 'tcx> {
// If the root is re-exported, terminate all recursion.
- let mut stack = HirIdSet::default();
- stack.insert(hir::CRATE_HIR_ID);
+ let mut stack = LocalDefIdSet::default();
+ stack.insert(CRATE_DEF_ID);
RustdocVisitor {
cx,
view_item_stack: stack,
pub(crate) fn visit(mut self) -> Module<'tcx> {
let mut top_level_module = self.visit_mod_contents(
- hir::CRATE_HIR_ID,
+ CRATE_DEF_ID,
self.cx.tcx.hir().root_module(),
self.cx.tcx.crate_name(LOCAL_CRATE),
None,
fn visit_mod_contents(
&mut self,
- id: hir::HirId,
+ def_id: LocalDefId,
m: &'tcx hir::Mod<'tcx>,
name: Symbol,
- parent_id: Option<hir::HirId>,
+ parent_id: Option<LocalDefId>,
) -> Module<'tcx> {
- let mut om = Module::new(name, id, m.spans.inner_span);
- let def_id = self.cx.tcx.hir().local_def_id(id).to_def_id();
+ let mut om = Module::new(name, def_id, m.spans.inner_span);
// Keep track of if there were any private modules in the path.
let orig_inside_public_path = self.inside_public_path;
- self.inside_public_path &= self.cx.tcx.visibility(def_id).is_public();
+ self.inside_public_path &= self.cx.tcx.local_visibility(def_id).is_public();
for &i in m.item_ids {
let item = self.cx.tcx.hir().item(i);
if matches!(item.kind, hir::ItemKind::Use(_, hir::UseKind::Glob)) {
/// Returns `true` if the target has been inlined.
fn maybe_inline_local(
&mut self,
- id: hir::HirId,
+ def_id: LocalDefId,
res: Res,
renamed: Option<Symbol>,
glob: bool,
return false;
};
- let use_attrs = tcx.hir().attrs(id);
+ let use_attrs = tcx.hir().attrs(tcx.hir().local_def_id_to_hir_id(def_id));
// Don't inline `doc(hidden)` imports so they can be stripped at a later stage.
let is_no_inline = use_attrs.lists(sym::doc).has_word(sym::no_inline)
- || use_attrs.lists(sym::doc).has_word(sym::hidden);
+ || tcx.is_doc_hidden(def_id.to_def_id());
// For cross-crate impl inlining we need to know whether items are
// reachable in documentation -- a previously unreachable item can be
return false;
}
- let res_hir_id = match res_did.as_local() {
- Some(n) => tcx.hir().local_def_id_to_hir_id(n),
- None => return false,
+ let Some(res_did) = res_did.as_local() else {
+ return false;
};
- let is_private =
- !self.cx.cache.effective_visibilities.is_directly_public(self.cx.tcx, res_did);
- let is_hidden = inherits_doc_hidden(self.cx.tcx, res_hir_id);
+ let is_private = !self
+ .cx
+ .cache
+ .effective_visibilities
+ .is_directly_public(self.cx.tcx, res_did.to_def_id());
+ let is_hidden = inherits_doc_hidden(self.cx.tcx, res_did);
// Only inline if requested or if the item would otherwise be stripped.
if (!please_inline && !is_private && !is_hidden) || is_no_inline {
return false;
}
- if !self.view_item_stack.insert(res_hir_id) {
+ if !self.view_item_stack.insert(res_did) {
return false;
}
- let ret = match tcx.hir().get(res_hir_id) {
+ let ret = match tcx.hir().get_by_def_id(res_did) {
Node::Item(&hir::Item { kind: hir::ItemKind::Mod(ref m), .. }) if glob => {
let prev = mem::replace(&mut self.inlining, true);
for &i in m.item_ids {
let i = self.cx.tcx.hir().item(i);
- self.visit_item(i, None, om, Some(id));
+ self.visit_item(i, None, om, Some(def_id));
}
self.inlining = prev;
true
}
Node::Item(it) if !glob => {
let prev = mem::replace(&mut self.inlining, true);
- self.visit_item(it, renamed, om, Some(id));
+ self.visit_item(it, renamed, om, Some(def_id));
self.inlining = prev;
true
}
}
_ => false,
};
- self.view_item_stack.remove(&res_hir_id);
+ self.view_item_stack.remove(&res_did);
ret
}
item: &'tcx hir::Item<'_>,
renamed: Option<Symbol>,
om: &mut Module<'tcx>,
- parent_id: Option<hir::HirId>,
+ parent_id: Option<LocalDefId>,
) {
debug!("visiting item {:?}", item);
let name = renamed.unwrap_or(item.ident.name);
let is_glob = kind == hir::UseKind::Glob;
let ident = if is_glob { None } else { Some(name) };
if self.maybe_inline_local(
- item.hir_id(),
+ item.owner_id.def_id,
res,
ident,
is_glob,
}
}
hir::ItemKind::Mod(ref m) => {
- om.mods.push(self.visit_mod_contents(item.hir_id(), m, name, parent_id));
+ om.mods.push(self.visit_mod_contents(item.owner_id.def_id, m, name, parent_id));
}
hir::ItemKind::Fn(..)
| hir::ItemKind::ExternCrate(..)
use crate::core::DocContext;
-use rustc_hir::def::DefKind;
+use rustc_hir::def::{DefKind, Res};
use rustc_hir::def_id::{DefId, DefIdSet};
use rustc_middle::ty::TyCtxt;
+use rustc_resolve::Resolver;
// FIXME: this may not be exhaustive, but is sufficient for rustdocs current uses
define_method!(is_directly_public);
define_method!(is_exported);
define_method!(is_reachable);
+
+ pub(crate) fn init(&mut self, extern_public: DefIdSet) {
+ self.extern_public = extern_public;
+ }
}
pub(crate) fn lib_embargo_visit_item(cx: &mut DocContext<'_>, def_id: DefId) {
.visit_item(def_id)
}
+pub(crate) fn early_lib_embargo_visit_item(
+ resolver: &Resolver<'_>,
+ extern_public: &mut DefIdSet,
+ def_id: DefId,
+ is_mod: bool,
+) {
+ assert!(!def_id.is_local());
+ EarlyLibEmbargoVisitor { resolver, extern_public, visited_mods: Default::default() }
+ .visit_item(def_id, is_mod)
+}
+
/// Similar to `librustc_privacy::EmbargoVisitor`, but also takes
/// specific rustdoc annotations into account (i.e., `doc(hidden)`)
struct LibEmbargoVisitor<'a, 'tcx> {
visited_mods: DefIdSet,
}
+struct EarlyLibEmbargoVisitor<'r, 'ra> {
+ resolver: &'r Resolver<'ra>,
+ // Effective visibilities for reachable nodes
+ extern_public: &'r mut DefIdSet,
+ // Keeps track of already visited modules, in case a module re-exports its parent
+ visited_mods: DefIdSet,
+}
+
impl LibEmbargoVisitor<'_, '_> {
fn visit_mod(&mut self, def_id: DefId) {
if !self.visited_mods.insert(def_id) {
}
}
}
+
+impl EarlyLibEmbargoVisitor<'_, '_> {
+ fn visit_mod(&mut self, def_id: DefId) {
+ if !self.visited_mods.insert(def_id) {
+ return;
+ }
+
+ for item in self.resolver.cstore().module_children_untracked(def_id, self.resolver.sess()) {
+ if let Some(def_id) = item.res.opt_def_id() {
+ if item.vis.is_public() {
+ self.visit_item(def_id, matches!(item.res, Res::Def(DefKind::Mod, _)));
+ }
+ }
+ }
+ }
+
+ fn visit_item(&mut self, def_id: DefId, is_mod: bool) {
+ if !self.resolver.cstore().is_doc_hidden_untracked(def_id) {
+ self.extern_public.insert(def_id);
+ if is_mod {
+ self.visit_mod(def_id);
+ }
+ }
+ }
+}
};
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,
#![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
pub fill: Option<char>,
/// Optionally specified alignment.
pub align: Alignment,
- /// Packed version of various flags provided, see [`rustc_parse_format::Flag`].
- pub flags: u32,
+ /// Whether all flag options are set to default (no flags specified).
+ pub no_flags: bool,
/// Represents either the maximum width or the integer precision.
pub precision: Count<'tcx>,
/// The minimum width, will be padded according to `width`/`align`
Some(Self {
fill: spec.fill,
align: spec.align,
- flags: spec.flags,
+ no_flags: spec.sign.is_none() && !spec.alternate && !spec.zero_pad && spec.debug_hex.is_none(),
precision: Count::new(
FormatParamUsage::Precision,
spec.precision,
self.width.is_implied()
&& self.precision.is_implied()
&& self.align == Alignment::AlignUnknown
- && self.flags == 0
+ && self.no_flags
}
}
// ::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(..)
}
}
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,
};
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(..)
("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 `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>();
+}
// 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
+
// table like view
assert-css: (".item-right.docblock-short", { "padding-left": "0px" })
compare-elements-position-near: (
- "//*[@class='item-left module-item']//a[text()='replaced_function']",
+ "//*[@class='item-left']//a[text()='replaced_function']",
".item-left .stab.deprecated",
{"y": 2},
)
// Ensure no wrap
compare-elements-position: (
- "//*[@class='item-left module-item']//a[text()='replaced_function']/..",
+ "//*[@class='item-left']//a[text()='replaced_function']/..",
"//*[@class='item-right docblock-short'][text()='a thing with a label']",
("y"),
)
// staggered layout with 2em spacing
assert-css: (".item-right.docblock-short", { "padding-left": "32px" })
compare-elements-position-near: (
- "//*[@class='item-left module-item']//a[text()='replaced_function']",
+ "//*[@class='item-left']//a[text()='replaced_function']",
".item-left .stab.deprecated",
{"y": 2},
)
// Ensure wrap
compare-elements-position-false: (
- "//*[@class='item-left module-item']//a[text()='replaced_function']/..",
+ "//*[@class='item-left']//a[text()='replaced_function']/..",
"//*[@class='item-right docblock-short'][text()='a thing with a label']",
("y"),
)
// This test checks that the correct font is used on module items (in index.html pages).
goto: "file://" + |DOC_PATH| + "/test_docs/index.html"
assert-css: (
- ".item-table .module-item a",
+ ".item-table .item-left > a",
{"font-family": '"Fira Sans", Arial, NanumBarunGothic, sans-serif'},
ALL,
)
show-text: true
compare-elements-property: (
- "//a[@title='test_docs::safe_fn fn']/..",
- "//a[@title='test_docs::unsafe_fn fn']/..",
+ "//a[@title='fn test_docs::safe_fn']/..",
+ "//a[@title='fn test_docs::unsafe_fn']/..",
["clientHeight"]
)
#![no_core]
// @has 'foo/index.html'
-// @has - '//*[@class="item-left module-item"]/*[@class="stab portability"]' 'foobar'
-// @has - '//*[@class="item-left module-item"]/*[@class="stab portability"]' 'bar'
+// @has - '//*[@class="item-left"]/*[@class="stab portability"]' 'foobar'
+// @has - '//*[@class="item-left"]/*[@class="stab portability"]' 'bar'
#[doc(cfg(feature = "foobar"))]
mod imp_priv {
-// @has deprecated/index.html '//*[@class="item-left module-item"]/span[@class="stab deprecated"]' \
+// @has deprecated/index.html '//*[@class="item-left"]/span[@class="stab deprecated"]' \
// 'Deprecated'
// @has - '//*[@class="item-right docblock-short"]' 'Deprecated docs'
// @has doc_cfg/unix_only/index.html \
// '//*[@id="main-content"]/*[@class="item-info"]/*[@class="stab portability"]' \
// 'Available on Unix only.'
-// @matches - '//*[@class="item-left module-item"]//*[@class="stab portability"]' '\AARM\Z'
+// @matches - '//*[@class="item-left"]//*[@class="stab portability"]' '\AARM\Z'
// @count - '//*[@class="stab portability"]' 2
#[doc(cfg(unix))]
pub mod unix_only {
// @has doc_cfg/wasi_only/index.html \
// '//*[@id="main-content"]/*[@class="item-info"]/*[@class="stab portability"]' \
// 'Available on WASI only.'
-// @matches - '//*[@class="item-left module-item"]//*[@class="stab portability"]' '\AWebAssembly\Z'
+// @matches - '//*[@class="item-left"]//*[@class="stab portability"]' '\AWebAssembly\Z'
// @count - '//*[@class="stab portability"]' 2
#[doc(cfg(target_os = "wasi"))]
pub mod wasi_only {
// the portability header is different on the module view versus the full view
// @has doc_cfg/index.html
-// @matches - '//*[@class="item-left module-item"]//*[@class="stab portability"]' '\Aavx\Z'
+// @matches - '//*[@class="item-left"]//*[@class="stab portability"]' '\Aavx\Z'
// @has doc_cfg/fn.uses_target_feature.html
// @has - '//*[@id="main-content"]/*[@class="item-info"]/*[@class="stab portability"]' \
#![feature(doc_cfg)]
// @has 'foo/index.html'
-// @matches '-' '//*[@class="item-left module-item"]//*[@class="stab portability"]' '^sync$'
-// @has '-' '//*[@class="item-left module-item"]//*[@class="stab portability"]/@title' 'Available on crate feature `sync` only'
+// @matches '-' '//*[@class="item-left"]//*[@class="stab portability"]' '^sync$'
+// @has '-' '//*[@class="item-left"]//*[@class="stab portability"]/@title' 'Available on crate feature `sync` only'
// @has 'foo/struct.Foo.html'
// @has '-' '//*[@class="stab portability"]' 'sync'
// @has 'glob_shadowing/index.html'
-// @count - '//div[@class="item-left module-item"]' 6
+// @count - '//div[@class="item-left"]' 6
// @!has - '//div[@class="item-right docblock-short"]' 'sub1::describe'
// @has - '//div[@class="item-right docblock-short"]' 'sub2::describe'
extern crate macros;
-// @has foo/index.html '//*[@class="item-left unstable deprecated module-item"]/span[@class="stab deprecated"]' \
+// @has foo/index.html '//*[@class="item-left unstable deprecated"]/span[@class="stab deprecated"]' \
// Deprecated
-// @has - '//*[@class="item-left unstable deprecated module-item"]/span[@class="stab unstable"]' \
+// @has - '//*[@class="item-left unstable deprecated"]/span[@class="stab unstable"]' \
// Experimental
// @has foo/macro.my_macro.html
#![doc(issue_tracker_base_url = "https://issue_url/")]
#![unstable(feature = "test", issue = "32374")]
-// @matches issue_32374/index.html '//*[@class="item-left unstable deprecated module-item"]/span[@class="stab deprecated"]' \
+// @matches issue_32374/index.html '//*[@class="item-left unstable deprecated"]/span[@class="stab deprecated"]' \
// 'Deprecated'
-// @matches issue_32374/index.html '//*[@class="item-left unstable deprecated module-item"]/span[@class="stab unstable"]' \
+// @matches issue_32374/index.html '//*[@class="item-left unstable deprecated"]/span[@class="stab unstable"]' \
// 'Experimental'
// @matches issue_32374/index.html '//*[@class="item-right docblock-short"]/text()' 'Docs'
// @has - '//section[@id="main-content"]/details/div[@class="docblock"]//a[@href="../fn.foo.html"]' 'foo'
// @has - '//section[@id="main-content"]/details/div[@class="docblock"]//a[@href="../fn.bar.html"]' 'bar'
// Though there should be such links later
-// @has - '//section[@id="main-content"]/div[@class="item-table"]//div[@class="item-left module-item"]/a[@class="fn"][@href="fn.foo.html"]' 'foo'
-// @has - '//section[@id="main-content"]/div[@class="item-table"]//div[@class="item-left module-item"]/a[@class="fn"][@href="fn.bar.html"]' 'bar'
+// @has - '//section[@id="main-content"]/div[@class="item-table"]//div[@class="item-left"]/a[@class="fn"][@href="fn.foo.html"]' 'foo'
+// @has - '//section[@id="main-content"]/div[@class="item-table"]//div[@class="item-left"]/a[@class="fn"][@href="fn.bar.html"]' 'bar'
/// See either [foo] or [bar].
pub mod subtwo {
#[doc(inline)]
pub use sub::*;
-// @count foo/index.html '//a[@class="mod"][@title="foo::prelude mod"]' 1
+// @count foo/index.html '//a[@class="mod"][@title="mod foo::prelude"]' 1
// @count foo/prelude/index.html '//div[@class="item-row"]' 0
pub mod prelude {}
}
}
-// @count foo/index.html '//a[@class="mod"][@title="foo::prelude mod"]' 1
+// @count foo/index.html '//a[@class="mod"][@title="mod foo::prelude"]' 1
// @count foo/prelude/index.html '//div[@class="item-row"]' 0
pub mod prelude {}
-// @has issue_95873/index.html "//*[@class='item-left import-item']" "pub use ::std as x;"
+// @has issue_95873/index.html "//*[@class='item-left']" "pub use ::std as x;"
pub use ::std as x;
pub use issue_99221_aux::*;
-// @count foo/index.html '//a[@class="struct"][@title="foo::Print struct"]' 1
+// @count foo/index.html '//a[@class="struct"][@title="struct foo::Print"]' 1
pub struct Print;
pub use issue_99734_aux::*;
-// @count foo/index.html '//a[@class="fn"][@title="foo::main fn"]' 1
+// @count foo/index.html '//a[@class="fn"][@title="fn foo::main"]' 1
extern "C" {
pub fn main() -> std::ffi::c_int;
pub use issue_99734_aux::*;
-// @count foo/index.html '//a[@class="mod"][@title="foo::task mod"]' 1
+// @count foo/index.html '//a[@class="mod"][@title="mod foo::task"]' 1
pub mod task {}
pub fn dummy() {}
// ensure that `extern crate foo;` was inserted into code snips automatically:
-// @matches foo/index.html '//a[@class="test-arrow"][@href="https://example.com/?code=%23!%5Ballow(unused)%5D%0Aextern%20crate%20r%23foo%3B%0Afn%20main()%20%7B%0Ause%20foo%3A%3Adummy%3B%0Adummy()%3B%0A%7D&edition=2015"]' "Run"
+// @matches foo/index.html '//a[@class="test-arrow"][@href="https://example.com/?code=%23!%5Ballow(unused)%5D%0Aextern+crate+r%23foo;%0Afn+main()+%7B%0Ause+foo::dummy;%0Adummy();%0A%7D&edition=2015"]' "Run"
//! }
//! ```
-// @matches foo/index.html '//a[@class="test-arrow"][@href="https://www.example.com/?code=%23!%5Ballow(unused)%5D%0Afn%20main()%20%7B%0A%20%20%20%20println!(%22Hello%2C%20world!%22)%3B%0A%7D&edition=2015"]' "Run"
-// @matches foo/index.html '//a[@class="test-arrow"][@href="https://www.example.com/?code=%23!%5Ballow(unused)%5D%0Afn%20main()%20%7B%0Aprintln!(%22Hello%2C%20world!%22)%3B%0A%7D&edition=2015"]' "Run"
-// @matches foo/index.html '//a[@class="test-arrow"][@href="https://www.example.com/?code=%23!%5Ballow(unused)%5D%0A%23!%5Bfeature(something)%5D%0A%0Afn%20main()%20%7B%0A%20%20%20%20println!(%22Hello%2C%20world!%22)%3B%0A%7D&version=nightly&edition=2015"]' "Run"
+// @matches foo/index.html '//a[@class="test-arrow"][@href="https://www.example.com/?code=%23!%5Ballow(unused)%5D%0Afn+main()+%7B%0Aprintln!(%22Hello,+world!%22);%0A%7D&edition=2015"]' "Run"
+// @matches foo/index.html '//a[@class="test-arrow"][@href="https://www.example.com/?code=%23!%5Ballow(unused)%5D%0Afn+main()+%7B%0A++++println!(%22Hello,+world!%22);%0A%7D&edition=2015"]' "Run"
+// @matches foo/index.html '//a[@class="test-arrow"][@href="https://www.example.com/?code=%23!%5Ballow(unused)%5D%0A%23!%5Bfeature(something)%5D%0A%0Afn+main()+%7B%0A++++println!(%22Hello,+world!%22);%0A%7D&version=nightly&edition=2015"]' "Run"
extern crate reexport_check;
// @!has 'foo/index.html' '//code' 'pub use self::i32;'
-// @has 'foo/index.html' '//div[@class="item-left deprecated module-item"]' 'i32'
+// @has 'foo/index.html' '//div[@class="item-left deprecated"]' 'i32'
// @has 'foo/i32/index.html'
#[allow(deprecated, deprecated_in_future)]
pub use std::i32;
// @!has 'foo/index.html' '//code' 'pub use self::string::String;'
-// @has 'foo/index.html' '//div[@class="item-left module-item"]' 'String'
+// @has 'foo/index.html' '//div[@class="item-left"]' 'String'
pub use std::string::String;
// @has 'foo/index.html' '//div[@class="item-right docblock-short"]' 'Docs in original'
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
|
= 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()}
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
--- /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
|
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:29:19
|
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:34:23
|
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:41:26
|
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:46:19
|
= note: expected fn item `fn(_) -> _ {foo::<u8>}`
found fn pointer `fn(_) -> _`
- = note: fn items are distinct from fn pointers
+ = 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:11:4
|
= 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
= 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
= 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
--- /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
+
{
- ::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))
}
}
};
+++ /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
--- /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`.
#![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);
}
--- /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`.
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
--> $DIR/ref-pattern-binding.rs:18:9
--- /dev/null
+error[E0271]: expected `[async block@$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
+ })
+}
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
+// 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`.
(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