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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
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6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
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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
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--> $DIR/issue-50940-with-feature.rs:1:12
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LL | #![feature(unsized_locals, unsized_fn_params)]
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| ^^^^^^^^^^^^^^
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= note: see issue #48055 <https://github.com/rust-lang/rust/issues/48055> for more information
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= note: `#[warn(incomplete_features)]` on by default
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error[E0277]: the size for values of type `str` cannot be known at compilation time
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--> $DIR/issue-50940-with-feature.rs:6:5
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LL | A as fn(str) -> A<str>;
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| ^ doesn't have a size known at compile-time
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= help: within `A<str>`, the trait `Sized` is not implemented for `str`, which is required by `A<str>: Sized`
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note: required because it appears within the type `A<str>`
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--> $DIR/issue-50940-with-feature.rs:5:12
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LL | struct A<X: ?Sized>(X);
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| ^
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= note: the return type of a function must have a statically known size
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error: aborting due to 1 previous error; 1 warning emitted
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For more information about this error, try `rustc --explain E0277`.
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