diff options
Diffstat (limited to 'tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.rs')
-rw-r--r-- | tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.rs b/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.rs new file mode 100644 index 000000000..91f1ed481 --- /dev/null +++ b/tests/ui/impl-trait/recursive-type-alias-impl-trait-declaration-too-subtle.rs @@ -0,0 +1,31 @@ +#![feature(type_alias_impl_trait)] + +mod a { + type Foo = impl PartialEq<(Foo, i32)>; + //~^ ERROR: unconstrained opaque type + + struct Bar; + + impl PartialEq<(Bar, i32)> for Bar { + fn eq(&self, _other: &(Foo, i32)) -> bool { + //~^ ERROR: `eq` has an incompatible type for trait + true + } + } +} + +mod b { + type Foo = impl PartialEq<(Foo, i32)>; + //~^ ERROR: unconstrained opaque type + + struct Bar; + + impl PartialEq<(Foo, i32)> for Bar { + fn eq(&self, _other: &(Bar, i32)) -> bool { + //~^ ERROR: `eq` has an incompatible type for trait + true + } + } +} + +fn main() {} |