diff options
Diffstat (limited to 'tests/ui/type-alias-impl-trait/issue-76202-trait-impl-for-tait.rs')
-rw-r--r-- | tests/ui/type-alias-impl-trait/issue-76202-trait-impl-for-tait.rs | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/issue-76202-trait-impl-for-tait.rs b/tests/ui/type-alias-impl-trait/issue-76202-trait-impl-for-tait.rs new file mode 100644 index 000000000..b97e444c6 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/issue-76202-trait-impl-for-tait.rs @@ -0,0 +1,31 @@ +// Regression test for issue #76202 +// Tests that we don't ICE when we have a trait impl on a TAIT. + +// check-pass + +#![feature(type_alias_impl_trait)] + +trait Dummy {} +impl Dummy for () {} + +type F = impl Dummy; +fn f() -> F {} + +trait Test { + fn test(self); +} + +impl Test for F { + fn test(self) {} +} + +// Ok because `i32` does not implement `Dummy`, +// so it can't possibly be the hidden type of `F`. +impl Test for i32 { + fn test(self) {} +} + +fn main() { + let x: F = f(); + x.test(); +} |