mirror of https://github.com/rust-lang/rust.git
6cb627b681
Fix incorrect trait bound restriction suggestion
Suggest
```
error[E0308]: mismatched types
--> $DIR/restrict-assoc-type-of-generic-bound.rs:9:12
|
LL | pub fn foo<A: MyTrait, B>(a: A) -> B {
| - - expected `B` because of return type
| |
| expected this type parameter
LL | return a.bar();
| ^^^^^^^ expected type parameter `B`, found associated type
|
= note: expected type parameter `B`
found associated type `<A as MyTrait>::T`
help: consider further restricting this bound
|
LL | pub fn foo<A: MyTrait<T = B>, B>(a: A) -> B {
| +++++++
```
instead of
```
error[E0308]: mismatched types
--> $DIR/restrict-assoc-type-of-generic-bound.rs:9:12
|
LL | pub fn foo<A: MyTrait, B>(a: A) -> B {
| - - expected `B` because of return type
| |
| expected this type parameter
LL | return a.bar();
| ^^^^^^^ expected type parameter `B`, found associated type
|
= note: expected type parameter `B`
found associated type `<A as MyTrait>::T`
help: consider further restricting this bound
|
LL | pub fn foo<A: MyTrait + <T = B>, B>(a: A) -> B {
| +++++++++
```
Fix #117501.
|
||
|---|---|---|
| .. | ||
| apit-unsized.rs | ||
| apit-unsized.stderr | ||
| enum-unit-variant-trait-bound.rs | ||
| enum-unit-variant-trait-bound.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 | ||
| 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 | ||
| unsized-bound.rs | ||
| unsized-bound.stderr | ||