diff options
Diffstat (limited to 'tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs')
-rw-r--r-- | tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs b/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs new file mode 100644 index 000000000..5f75fdc71 --- /dev/null +++ b/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs @@ -0,0 +1,19 @@ +#![feature(type_alias_impl_trait)] +#![allow(dead_code)] + +pub trait Captures<'a> {} + +impl<'a, T: ?Sized> Captures<'a> for T {} + +type OneLifetime<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>; + +fn foo<'a, 'b>(a: &'a u32, b: &'b u32) -> OneLifetime<'a, 'b> { + a +} + +fn bar<'a, 'b>(a: &'a u32, b: &'b u32) -> OneLifetime<'a, 'b> { + b + //~^ ERROR: concrete type differs from previous defining opaque type use +} + +fn main() {} |