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| author | Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> | 2023-01-25 20:11:05 +0100 |
|---|---|---|
| committer | Nilstrieb <48135649+Nilstrieb@users.noreply.github.com> | 2023-01-25 21:25:42 +0100 |
| commit | 943000fdcf9eac6c77b44923f551409aa06a46b5 (patch) | |
| tree | ba91fa9df8a942a3f8ad8dfcc671e2df4a4aab43 /tests | |
| parent | b222f2e2660f8d81dc30061c918d774147fcf1a6 (diff) | |
| download | rust-943000fdcf9eac6c77b44923f551409aa06a46b5.tar.gz rust-943000fdcf9eac6c77b44923f551409aa06a46b5.zip | |
Use `can_eq` to compare types for default assoc type error
This works correctly with inference variables.
Diffstat (limited to 'tests')
3 files changed, 32 insertions, 3 deletions
diff --git a/tests/ui/associated-types/defaults-in-other-trait-items.rs b/tests/ui/associated-types/defaults-in-other-trait-items.rs index 505751969b6..f263809552f 100644 --- a/tests/ui/associated-types/defaults-in-other-trait-items.rs +++ b/tests/ui/associated-types/defaults-in-other-trait-items.rs @@ -44,4 +44,18 @@ impl AssocConst for () { const C: Self::Ty = 0u8; } +pub trait Trait { + type Res = isize; //~ NOTE associated type defaults can't be assumed inside the trait defining them + + fn infer_me_correctly() -> Self::Res { + //~^ NOTE expected `<Self as Trait>::Res` because of return type + + // {integer} == isize + 2 + //~^ ERROR mismatched types + //~| NOTE expected associated type, found integer + //~| NOTE expected associated type `<Self as Trait>::Res` + } +} + fn main() {} diff --git a/tests/ui/associated-types/defaults-in-other-trait-items.stderr b/tests/ui/associated-types/defaults-in-other-trait-items.stderr index 71d421926e7..bdcfadd3955 100644 --- a/tests/ui/associated-types/defaults-in-other-trait-items.stderr +++ b/tests/ui/associated-types/defaults-in-other-trait-items.stderr @@ -24,6 +24,21 @@ LL | const C: Self::Ty = 0u8; = note: expected associated type `<Self as AssocConst>::Ty` found type `u8` -error: aborting due to 2 previous errors +error[E0308]: mismatched types + --> $DIR/defaults-in-other-trait-items.rs:54:9 + | +LL | type Res = isize; + | ----------------- associated type defaults can't be assumed inside the trait defining them +LL | +LL | fn infer_me_correctly() -> Self::Res { + | --------- expected `<Self as Trait>::Res` because of return type +... +LL | 2 + | ^ expected associated type, found integer + | + = note: expected associated type `<Self as Trait>::Res` + found type `{integer}` + +error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/associated-types/issue-26681.stderr b/tests/ui/associated-types/issue-26681.stderr index 74411008c9d..977620d9052 100644 --- a/tests/ui/associated-types/issue-26681.stderr +++ b/tests/ui/associated-types/issue-26681.stderr @@ -1,13 +1,13 @@ error[E0308]: mismatched types --> $DIR/issue-26681.rs:17:39 | +LL | type Fv: Foo = u8; + | ------------------ associated type defaults can't be assumed inside the trait defining them LL | const C: <Self::Fv as Foo>::Bar = 6665; | ^^^^ expected associated type, found integer | = note: expected associated type `<<Self as Baz>::Fv as Foo>::Bar` found type `{integer}` - = help: consider constraining the associated type `<<Self as Baz>::Fv as Foo>::Bar` to `{integer}` - = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html error: aborting due to previous error |