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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.
18 lines
748 B
Plaintext
18 lines
748 B
Plaintext
error[E0277]: the size for values of type `[isize]` cannot be known at compilation time
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--> $DIR/dst-bad-deep.rs:13:34
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LL | let h: &Fat<Fat<[isize]>> = &Fat { ptr: *g };
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| ^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
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= help: within `Fat<Fat<[isize]>>`, the trait `Sized` is not implemented for `[isize]`, which is required by `Fat<Fat<[isize]>>: Sized`
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note: required because it appears within the type `Fat<[isize]>`
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--> $DIR/dst-bad-deep.rs:6:8
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LL | struct Fat<T: ?Sized> {
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| ^^^
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= note: structs must have a statically known size to be initialized
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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