mirror of
https://github.com/rust-lang/rust.git
synced 2025-04-30 12:07:40 +00:00
e565eeed78
When a `?` operation requires an `Into` conversion with additional bounds (like having a concrete error but wanting to convert to a trait object), we handle it speficically and provide the same kind of information we give other `?` related errors.
```
error[E0277]: `?` couldn't convert the error: `E: std::error::Error` is not satisfied
--> $DIR/bad-question-mark-on-trait-object.rs:5:13
|
LL | fn foo() -> Result<(), Box<dyn std::error::Error>> {
| -------------------------------------- required `E: std::error::Error` because of this
LL | Ok(bar()?)
| ^ the trait `std::error::Error` is not implemented for `E`
|
= note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
= note: required for `Box<dyn std::error::Error>` to implement `From<E>`
```
Avoid talking about `FromResidual` when other more relevant information is being given, particularly from `rust_on_unimplemented`.
|
||
|---|---|---|
| .. | ||
| dont-suggest-through-inner-const.rs | ||
| dont-suggest-through-inner-const.stderr | ||
| infer-return-ty-for-fn-sig-issue-125488.fixed | ||
| infer-return-ty-for-fn-sig-issue-125488.rs | ||
| infer-return-ty-for-fn-sig-issue-125488.stderr | ||
| issue-64620.rs | ||
| issue-64620.stderr | ||
| issue-82612-return-mutable-reference.rs | ||
| issue-82612-return-mutable-reference.stderr | ||
| issue-86188-return-not-in-fn-body.rs | ||
| issue-86188-return-not-in-fn-body.stderr | ||
| ret-bang.rs | ||
| ret-non-nil.rs | ||
| ret-non-nil.stderr | ||
| return-disjoint-regions.rs | ||
| return-disjoint-regions.stderr | ||
| return-from-diverging.rs | ||
| return-from-diverging.stderr | ||
| return-from-residual-sugg-issue-125997.fixed | ||
| return-from-residual-sugg-issue-125997.rs | ||
| return-from-residual-sugg-issue-125997.stderr | ||
| return-impl-trait-bad.rs | ||
| return-impl-trait-bad.stderr | ||
| return-impl-trait.fixed | ||
| return-impl-trait.rs | ||
| return-impl-trait.stderr | ||
| return-match-array-const.rs | ||
| return-match-array-const.stderr | ||
| return-nil.rs | ||
| return-struct.rs | ||
| return-struct.stderr | ||
| return-ty-mismatch-note.rs | ||
| return-ty-mismatch-note.stderr | ||
| return-type.rs | ||
| return-type.stderr | ||
| return-unit-from-diverging.rs | ||
| return-unit-from-diverging.stderr | ||
| suggest-a-value.rs | ||
| suggest-a-value.stderr | ||
| tail-expr-as-potential-return.rs | ||
| tail-expr-as-potential-return.stderr | ||
| tail-expr-if-as-return.rs | ||
| tail-expr-if-as-return.stderr | ||