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Print closure signatures when reporting placeholder errors

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This commit is contained in:
Matthew Jasper 2021-02-09 23:00:33 +00:00
parent 94c11dfe78
commit 9337d4fde8
5 changed files with 38 additions and 12 deletions
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2
src/test/ui/issues/issue-57843.stderr
View file

@ -4,7 +4,7 @@ error: implementation of `FnOnce` is not general enough
LL | Foo(Box::new(|_| ()));
| ^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: `[closure@$DIR/issue-57843.rs:25:18: 25:24]` must implement `FnOnce<(&'1 bool,)>`, for any lifetime `'1`...
= note: closure with signature `fn(&'2 bool)` must implement `FnOnce<(&'1 bool,)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 bool,)>`, for some specific lifetime `'2`
error: aborting due to previous error

2
src/test/ui/lifetimes/issue-79187.stderr
View file

@ -4,7 +4,7 @@ error: implementation of `FnOnce` is not general enough
LL | thing(f);
| ^^^^^ implementation of `FnOnce` is not general enough
|
= note: `[closure@$DIR/issue-79187.rs:4:13: 4:19]` must implement `FnOnce<(&'1 u32,)>`, for any lifetime `'1`...
= note: closure with signature `fn(&'2 u32)` must implement `FnOnce<(&'1 u32,)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 u32,)>`, for some specific lifetime `'2`
error: aborting due to previous error

2
src/test/ui/type-alias-impl-trait/issue-57611-trait-alias.nll.stderr
View file

@ -30,7 +30,7 @@ error: implementation of `FnOnce` is not general enough
LL | type Bar = impl Baz<Self, Self>;
| ^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: `[closure@$DIR/issue-57611-trait-alias.rs:25:9: 25:14]` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: closure with signature `fn(&'2 X) -> &'2 X` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 X,)>`, for some specific lifetime `'2`
error: aborting due to 4 previous errors

6
src/test/ui/type-alias-impl-trait/issue-57611-trait-alias.stderr
View file

@ -4,7 +4,7 @@ error: implementation of `FnOnce` is not general enough
LL | type Bar = impl Baz<Self, Self>;
| ^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: `[closure@$DIR/issue-57611-trait-alias.rs:25:9: 25:14]` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: closure with signature `fn(&'2 X) -> &X` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 X,)>`, for some specific lifetime `'2`
error[E0308]: mismatched types
@ -27,7 +27,7 @@ error: implementation of `FnOnce` is not general enough
LL | type Bar = impl Baz<Self, Self>;
| ^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: `[closure@$DIR/issue-57611-trait-alias.rs:25:9: 25:14]` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: closure with signature `fn(&'2 X) -> &'2 X` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 X,)>`, for some specific lifetime `'2`
error[E0308]: mismatched types
@ -50,7 +50,7 @@ error: implementation of `FnOnce` is not general enough
LL | type Bar = impl Baz<Self, Self>;
| ^^^^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
|
= note: `[closure@$DIR/issue-57611-trait-alias.rs:25:9: 25:14]` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: closure with signature `fn(&'2 X) -> &'2 X` must implement `FnOnce<(&'1 X,)>`, for any lifetime `'1`...
= note: ...but it actually implements `FnOnce<(&'2 X,)>`, for some specific lifetime `'2`
error: aborting due to 5 previous errors