diff options
Diffstat (limited to 'src/test/ui/impl-trait/two_tait_defining_each_other2.rs')
-rw-r--r-- | src/test/ui/impl-trait/two_tait_defining_each_other2.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/impl-trait/two_tait_defining_each_other2.rs b/src/test/ui/impl-trait/two_tait_defining_each_other2.rs new file mode 100644 index 000000000..05b096680 --- /dev/null +++ b/src/test/ui/impl-trait/two_tait_defining_each_other2.rs @@ -0,0 +1,16 @@ +#![feature(type_alias_impl_trait)] + +type A = impl Foo; //~ ERROR unconstrained opaque type +type B = impl Foo; + +trait Foo {} + +fn muh(x: A) -> B { + x // B's hidden type is A (opaquely) + //~^ ERROR opaque type's hidden type cannot be another opaque type +} + +struct Bar; +impl Foo for Bar {} + +fn main() {} |