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aa184c558f
Note that the caller chooses a type for type param
```
error[E0308]: mismatched types
--> $DIR/return-impl-trait.rs:23:5
|
LL | fn other_bounds<T>() -> T
| - -
| | |
| | expected `T` because of return type
| | help: consider using an impl return type: `impl Trait`
| expected this type parameter
...
LL | ()
| ^^ expected type parameter `T`, found `()`
|
= note: expected type parameter `T`
found unit type `()`
= note: the caller chooses the type of T which can be different from ()
```
Tried to see if "expected this type parameter" can be replaced, but that goes all the way to `rustc_infer` so seems not worth the effort and can affect other diagnostics.
Revives #112088 and #104755.
|
||
|---|---|---|
| .. | ||
| apit-unsized.rs | ||
| apit-unsized.stderr | ||
| argument-with-unnecessary-method-call.rs | ||
| argument-with-unnecessary-method-call.stderr | ||
| enum-unit-variant-trait-bound.rs | ||
| enum-unit-variant-trait-bound.stderr | ||
| ice-unsized-struct-arg-issue2-121424.rs | ||
| ice-unsized-struct-arg-issue2-121424.stderr | ||
| ice-unsized-struct-arg-issue-121612.rs | ||
| ice-unsized-struct-arg-issue-121612.stderr | ||
| ice-unsized-tuple-const-issue-121443.rs | ||
| ice-unsized-tuple-const-issue-121443.stderr | ||
| impl-bound-with-references-error.rs | ||
| impl-bound-with-references-error.stderr | ||
| impl-derived-implicit-sized-bound-2.rs | ||
| impl-derived-implicit-sized-bound-2.stderr | ||
| impl-derived-implicit-sized-bound.rs | ||
| impl-derived-implicit-sized-bound.stderr | ||
| impl-missing-where-clause-lifetimes-from-trait.rs | ||
| impl-missing-where-clause-lifetimes-from-trait.stderr | ||
| issue-75961.rs | ||
| issue-82038.rs | ||
| issue-82038.stderr | ||
| issue-93008.rs | ||
| issue-94680.rs | ||
| issue-94999.rs | ||
| issue-95640.rs | ||
| issue-119530-sugg-from-fn.rs | ||
| issue-119530-sugg-from-fn.stderr | ||
| mismatch-fn-trait.rs | ||
| mismatch-fn-trait.stderr | ||
| restrict-assoc-type-of-generic-bound.fixed | ||
| restrict-assoc-type-of-generic-bound.rs | ||
| restrict-assoc-type-of-generic-bound.stderr | ||
| shadowed-path-in-trait-bound-suggestion.fixed | ||
| shadowed-path-in-trait-bound-suggestion.rs | ||
| shadowed-path-in-trait-bound-suggestion.stderr | ||
| suggest-maybe-sized-bound.rs | ||
| suggest-maybe-sized-bound.stderr | ||
| super-assoc-mismatch.rs | ||
| super-assoc-mismatch.stderr | ||
| unsized-bound.rs | ||
| unsized-bound.stderr | ||