mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-03 20:23:59 +00:00
6efddac288
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
|
6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
|
help: this trait has no implementations, consider adding one
--> f100.rs:2:1
|
2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
|
3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
warning: the feature `unsized_locals` is incomplete and may not be safe to use and/or cause compiler crashes
|
|
--> $DIR/issue-50940-with-feature.rs:1:12
|
|
|
|
|
LL | #![feature(unsized_locals, unsized_fn_params)]
|
|
| ^^^^^^^^^^^^^^
|
|
|
|
|
= note: see issue #48055 <https://github.com/rust-lang/rust/issues/48055> for more information
|
|
= note: `#[warn(incomplete_features)]` on by default
|
|
|
|
error[E0277]: the size for values of type `str` cannot be known at compilation time
|
|
--> $DIR/issue-50940-with-feature.rs:6:5
|
|
|
|
|
LL | A as fn(str) -> A<str>;
|
|
| ^ doesn't have a size known at compile-time
|
|
|
|
|
= help: within `A<str>`, the trait `Sized` is not implemented for `str`, which is required by `A<str>: Sized`
|
|
note: required because it appears within the type `A<str>`
|
|
--> $DIR/issue-50940-with-feature.rs:5:12
|
|
|
|
|
LL | struct A<X: ?Sized>(X);
|
|
| ^
|
|
= note: the return type of a function must have a statically known size
|
|
|
|
error: aborting due to 1 previous error; 1 warning emitted
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|