mirror of https://github.com/rust-lang/rust.git
6eb48824da
Unless `try_trait_v2` is enabled, don't mention that `FromResidual` isn't implemented for a specific type when the implicit `From` conversion of a `?` fails. For the end user on stable, `?` might as well be a compiler intrinsic, so we remove that note to avoid further confusion and allowing other parts of the error to be more prominent.
```
error[E0277]: `?` couldn't convert the error to `u8`
--> $DIR/bad-interconversion.rs:4:20
|
LL | fn result_to_result() -> Result<u64, u8> {
| --------------- expected `u8` because of this
LL | Ok(Err(123_i32)?)
| ------------^ the trait `From<i32>` is not implemented for `u8`
| |
| this can't be annotated with `?` because it has type `Result<_, i32>`
|
= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
= help: the following other types implement trait `From<T>`:
`u8` implements `From<Char>`
`u8` implements `From<bool>`
```
|
||
|---|---|---|
| .. | ||
| bad-interconversion.rs | ||
| bad-interconversion.stderr | ||
| issue-32709.rs | ||
| issue-32709.stderr | ||
| option-to-result.rs | ||
| option-to-result.stderr | ||
| try-as-monad.rs | ||
| try-on-option-diagnostics.rs | ||
| try-on-option-diagnostics.stderr | ||
| try-on-option.rs | ||
| try-on-option.stderr | ||
| try-operator-custom.rs | ||
| try-operator-on-main.rs | ||
| try-operator-on-main.stderr | ||
| try-poll.rs | ||
| yeet-for-option.rs | ||
| yeet-for-result.rs | ||