diff options
Diffstat (limited to 'src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-infer.rs')
-rw-r--r-- | src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-infer.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-infer.rs b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-infer.rs new file mode 100644 index 000000000..b887fcf30 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-infer.rs @@ -0,0 +1,13 @@ +// https://github.com/rust-lang/rust/issues/73481 +// This test used to cause unsoundness, since one of the two possible +// resolutions was chosen at random instead of erroring due to conflicts. + +#![feature(type_alias_impl_trait)] + +type Y<A, B> = impl std::fmt::Debug; + +fn g<A, B>() -> (Y<A, B>, Y<B, A>) { + (42_i64, 60) //~ ERROR concrete type differs from previous defining opaque type use +} + +fn main() {} |