rust/tests/ui/error-codes/E0277.stderr
Esteban Küber 6efddac288 Provide more context on derived obligation error primary label
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.
2024-01-30 21:28:18 +00:00

38 lines
1.2 KiB
Plaintext

error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
--> $DIR/E0277.rs:11:6
|
LL | fn f(p: Path) { }
| ^ doesn't have a size known at compile-time
|
= help: within `Path`, the trait `Sized` is not implemented for `[u8]`, which is required by `Path: Sized`
note: required because it appears within the type `Path`
--> $SRC_DIR/std/src/path.rs:LL:COL
= help: unsized fn params are gated as an unstable feature
help: function arguments must have a statically known size, borrowed types always have a known size
|
LL | fn f(p: &Path) { }
| +
error[E0277]: the trait bound `i32: Foo` is not satisfied
--> $DIR/E0277.rs:15:15
|
LL | some_func(5i32);
| --------- ^^^^ the trait `Foo` is not implemented for `i32`
| |
| required by a bound introduced by this call
|
help: this trait has no implementations, consider adding one
--> $DIR/E0277.rs:3:1
|
LL | trait Foo {
| ^^^^^^^^^
note: required by a bound in `some_func`
--> $DIR/E0277.rs:7:17
|
LL | fn some_func<T: Foo>(foo: T) {
| ^^^ required by this bound in `some_func`
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.