let param_env = ty::ParamEnv::reveal_all();
for i in 0..mir.promoted.len() {
use rustc_data_structures::indexed_vec::Idx;
+ let i = Promoted::new(i);
let cid = GlobalId {
instance,
- promoted: Some(Promoted::new(i)),
+ promoted: Some(i),
};
match tcx.const_eval(param_env.and(cid)) {
Ok(val) => collect_const(tcx, val, instance.substs, output),
- Err(_) => {},
+ Err(err) => {
+ use rustc::middle::const_val::ErrKind;
+ use rustc::mir::interpret::EvalErrorKind;
+ if let ErrKind::Miri(ref miri, ..) = *err.kind {
+ if let EvalErrorKind::ReferencedConstant = miri.kind {
+ err.report_as_error(
+ tcx.at(mir.promoted[i].span),
+ "erroneous constant used",
+ );
+ }
+ }
+ },
}
}
}
--- /dev/null
+warning: attempt to subtract with overflow
+ --> $DIR/conditional_array_execution.rs:15:19
+ |
+LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
+ | ^^^^^
+ |
+note: lint level defined here
+ --> $DIR/conditional_array_execution.rs:11:9
+ |
+LL | #![warn(const_err)]
+ | ^^^^^^^^^
+
+warning: this constant cannot be used
+ --> $DIR/conditional_array_execution.rs:15:1
+ |
+LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
+ | ^^^^^^^^^^^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ | |
+ | attempt to subtract with overflow
+
+warning: this expression will panic at runtime
+ --> $DIR/conditional_array_execution.rs:20:20
+ |
+LL | println!("{}", FOO);
+ | ^^^ referenced constant has errors
+
+error[E0080]: erroneous constant used
+ --> $DIR/conditional_array_execution.rs:20:5
+ |
+LL | println!("{}", FOO);
+ | ^^^^^^^^^^^^^^^---^^
+ | |
+ | referenced constant has errors
+ |
+ = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
+
+error[E0080]: erroneous constant used
+ --> $DIR/conditional_array_execution.rs:20:20
+ |
+LL | println!("{}", FOO);
+ | ^^^ referenced constant has errors
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0080`.
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// compile-pass
#![warn(const_err)]
const X: u32 = 5;
fn main() {
println!("{}", FOO);
//~^ WARN this expression will panic at runtime
+ //~| ERROR erroneous constant used
}
warning: attempt to subtract with overflow
- --> $DIR/conditional_array_execution.rs:16:19
+ --> $DIR/conditional_array_execution.rs:15:19
|
LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
| ^^^^^
|
note: lint level defined here
- --> $DIR/conditional_array_execution.rs:12:9
+ --> $DIR/conditional_array_execution.rs:11:9
|
LL | #![warn(const_err)]
| ^^^^^^^^^
warning: this constant cannot be used
- --> $DIR/conditional_array_execution.rs:16:1
+ --> $DIR/conditional_array_execution.rs:15:1
|
LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
| ^^^^^^^^^^^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^
| attempt to subtract with overflow
warning: this expression will panic at runtime
- --> $DIR/conditional_array_execution.rs:21:20
+ --> $DIR/conditional_array_execution.rs:20:20
|
LL | println!("{}", FOO);
| ^^^ referenced constant has errors
+error[E0080]: erroneous constant used
+ --> $DIR/conditional_array_execution.rs:20:20
+ |
+LL | println!("{}", FOO);
+ | ^^^ referenced constant has errors
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0080`.
--- /dev/null
+warning: attempt to subtract with overflow
+ --> $DIR/issue-43197.rs:20:20
+ |
+LL | const X: u32 = 0-1;
+ | ^^^
+ |
+note: lint level defined here
+ --> $DIR/issue-43197.rs:11:9
+ |
+LL | #![warn(const_err)]
+ | ^^^^^^^^^
+
+warning: this constant cannot be used
+ --> $DIR/issue-43197.rs:20:5
+ |
+LL | const X: u32 = 0-1;
+ | ^^^^^^^^^^^^^^^---^
+ | |
+ | attempt to subtract with overflow
+
+warning: attempt to subtract with overflow
+ --> $DIR/issue-43197.rs:23:24
+ |
+LL | const Y: u32 = foo(0-1);
+ | ^^^
+
+warning: this constant cannot be used
+ --> $DIR/issue-43197.rs:23:5
+ |
+LL | const Y: u32 = foo(0-1);
+ | ^^^^^^^^^^^^^^^^^^^---^^
+ | |
+ | attempt to subtract with overflow
+
+warning: this expression will panic at runtime
+ --> $DIR/issue-43197.rs:26:23
+ |
+LL | println!("{} {}", X, Y);
+ | ^ referenced constant has errors
+
+warning: this expression will panic at runtime
+ --> $DIR/issue-43197.rs:26:26
+ |
+LL | println!("{} {}", X, Y);
+ | ^ referenced constant has errors
+
+error[E0080]: erroneous constant used
+ --> $DIR/issue-43197.rs:26:5
+ |
+LL | println!("{} {}", X, Y);
+ | ^^^^^^^^^^^^^^^^^^-^^^^^
+ | |
+ | referenced constant has errors
+ |
+ = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
+
+error[E0080]: erroneous constant used
+ --> $DIR/issue-43197.rs:26:26
+ |
+LL | println!("{} {}", X, Y);
+ | ^ referenced constant has errors
+
+error[E0080]: erroneous constant used
+ --> $DIR/issue-43197.rs:26:23
+ |
+LL | println!("{} {}", X, Y);
+ | ^ referenced constant has errors
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0080`.
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// compile-pass
#![warn(const_err)]
#![feature(const_fn)]
println!("{} {}", X, Y);
//~^ WARN this expression will panic at runtime
//~| WARN this expression will panic at runtime
+ //~| ERROR erroneous constant used
+ //~| ERROR erroneous constant used
}
warning: attempt to subtract with overflow
- --> $DIR/issue-43197.rs:21:20
+ --> $DIR/issue-43197.rs:20:20
|
LL | const X: u32 = 0-1;
| ^^^
|
note: lint level defined here
- --> $DIR/issue-43197.rs:12:9
+ --> $DIR/issue-43197.rs:11:9
|
LL | #![warn(const_err)]
| ^^^^^^^^^
warning: this constant cannot be used
- --> $DIR/issue-43197.rs:21:5
+ --> $DIR/issue-43197.rs:20:5
|
LL | const X: u32 = 0-1;
| ^^^^^^^^^^^^^^^---^
| attempt to subtract with overflow
warning: attempt to subtract with overflow
- --> $DIR/issue-43197.rs:24:24
+ --> $DIR/issue-43197.rs:23:24
|
LL | const Y: u32 = foo(0-1);
| ^^^
warning: this constant cannot be used
- --> $DIR/issue-43197.rs:24:5
+ --> $DIR/issue-43197.rs:23:5
|
LL | const Y: u32 = foo(0-1);
| ^^^^^^^^^^^^^^^^^^^---^^
| attempt to subtract with overflow
warning: this expression will panic at runtime
- --> $DIR/issue-43197.rs:27:23
+ --> $DIR/issue-43197.rs:26:23
|
LL | println!("{} {}", X, Y);
| ^ referenced constant has errors
warning: this expression will panic at runtime
- --> $DIR/issue-43197.rs:27:26
+ --> $DIR/issue-43197.rs:26:26
|
LL | println!("{} {}", X, Y);
| ^ referenced constant has errors
+error[E0080]: erroneous constant used
+ --> $DIR/issue-43197.rs:26:26
+ |
+LL | println!("{} {}", X, Y);
+ | ^ referenced constant has errors
+
+error[E0080]: erroneous constant used
+ --> $DIR/issue-43197.rs:26:23
+ |
+LL | println!("{} {}", X, Y);
+ | ^ referenced constant has errors
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0080`.
--- /dev/null
+error[E0080]: erroneous constant used
+ --> $DIR/issue-44578.rs:35:5
+ |
+LL | println!("{}", <Bar<u16, u8> as Foo>::AMT);
+ | ^^^^^^^^^^^^^^^--------------------------^^
+ | |
+ | referenced constant has errors
+ |
+ = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
+
+error[E0080]: erroneous constant used
+ --> $DIR/issue-44578.rs:35:20
+ |
+LL | println!("{}", <Bar<u16, u8> as Foo>::AMT);
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0080`.
// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// compile-pass
-#![warn(const_err)]
+#![allow(const_err)]
trait Foo {
const AMT: usize;
}
fn main() {
- println!("{}", <Bar<u16, u8> as Foo>::AMT); //~ WARN const_err
- //~^ WARN const_err
+ println!("{}", <Bar<u16, u8> as Foo>::AMT);
+ //~^ ERROR erroneous constant used
}
-warning: this expression will panic at runtime
- --> $DIR/issue-44578.rs:36:20
+error[E0080]: erroneous constant used
+ --> $DIR/issue-44578.rs:35:20
|
-LL | println!("{}", <Bar<u16, u8> as Foo>::AMT); //~ WARN const_err
+LL | println!("{}", <Bar<u16, u8> as Foo>::AMT);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
- |
-note: lint level defined here
- --> $DIR/issue-44578.rs:12:9
- |
-LL | #![warn(const_err)]
- | ^^^^^^^^^
-warning: this expression will panic at runtime
- --> $DIR/issue-44578.rs:36:20
- |
-LL | println!("{}", <Bar<u16, u8> as Foo>::AMT); //~ WARN const_err
- | ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
+error: aborting due to previous error
+For more information about this error, try `rustc --explain E0080`.
--- /dev/null
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+trait C {
+ const BOO: usize;
+}
+
+trait Foo<T> {
+ const BAR: usize;
+}
+
+struct A<T>(T);
+
+impl<T: C> Foo<T> for A<T> {
+ const BAR: usize = [5, 6, 7][T::BOO];
+}
+
+fn foo<T: C>() -> &'static usize {
+ &<A<T> as Foo<T>>::BAR //~ ERROR erroneous constant used
+}
+
+impl C for () {
+ const BOO: usize = 42;
+}
+
+impl C for u32 {
+ const BOO: usize = 1;
+}
+
+fn main() {
+ println!("{:x}", foo::<()>() as *const usize as usize);
+ println!("{:x}", foo::<u32>() as *const usize as usize);
+ println!("{:x}", foo::<()>());
+ println!("{:x}", foo::<u32>());
+}
\ No newline at end of file
--- /dev/null
+error[E0080]: erroneous constant used
+ --> $DIR/issue-50814-2.rs:26:5
+ |
+LL | &<A<T> as Foo<T>>::BAR //~ ERROR erroneous constant used
+ | ^---------------------
+ | |
+ | referenced constant has errors
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0080`.
--- /dev/null
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+trait Unsigned {
+ const MAX: u8;
+}
+
+struct U8(u8);
+impl Unsigned for U8 {
+ const MAX: u8 = 0xff;
+}
+
+struct Sum<A,B>(A,B);
+
+impl<A: Unsigned, B: Unsigned> Unsigned for Sum<A,B> {
+ const MAX: u8 = A::MAX + B::MAX;
+}
+
+fn foo<T>(_: T) -> &'static u8 {
+ &Sum::<U8,U8>::MAX //~ ERROR erroneous constant used
+}
+
+fn main() {
+ foo(0);
+}
\ No newline at end of file
--- /dev/null
+error[E0080]: erroneous constant used
+ --> $DIR/issue-50814.rs:27:5
+ |
+LL | &Sum::<U8,U8>::MAX //~ ERROR erroneous constant used
+ | ^-----------------
+ | |
+ | referenced constant has errors
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0080`.
projects / rust.git / commitdiff