diff options
Diffstat (limited to 'src/test/ui/associated-types/impl-trait-return-missing-constraint.rs')
-rw-r--r-- | src/test/ui/associated-types/impl-trait-return-missing-constraint.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/impl-trait-return-missing-constraint.rs b/src/test/ui/associated-types/impl-trait-return-missing-constraint.rs new file mode 100644 index 000000000..1de1ddbe3 --- /dev/null +++ b/src/test/ui/associated-types/impl-trait-return-missing-constraint.rs @@ -0,0 +1,32 @@ +trait Foo { + type Item; +} + +trait Bar: Foo {} + +struct S; + +impl Foo for S { + type Item = i32; +} +impl Bar for S {} + +struct T; + +impl Foo for T { + type Item = u32; +} +impl Bar for T {} + +fn bar() -> impl Bar { + T +} + +fn baz() -> impl Bar<Item = i32> { + //~^ ERROR type mismatch resolving `<impl Bar as Foo>::Item == i32` + bar() +} + +fn main() { + let _ = baz(); +} |