diff options
Diffstat (limited to 'src/test/ui/coherence/coherence-with-generator.rs')
-rw-r--r-- | src/test/ui/coherence/coherence-with-generator.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/coherence/coherence-with-generator.rs b/src/test/ui/coherence/coherence-with-generator.rs new file mode 100644 index 000000000..d34c391db --- /dev/null +++ b/src/test/ui/coherence/coherence-with-generator.rs @@ -0,0 +1,19 @@ +// Test that encountering closures during coherence does not cause issues. +#![feature(type_alias_impl_trait, generators)] +type OpaqueGenerator = impl Sized; +fn defining_use() -> OpaqueGenerator { + || { + for i in 0..10 { + yield i; + } + } +} + +struct Wrapper<T>(T); +trait Trait {} +impl Trait for Wrapper<OpaqueGenerator> {} +//~^ ERROR cannot implement trait on type alias impl trait +impl<T: Sync> Trait for Wrapper<T> {} +//~^ ERROR conflicting implementations of trait `Trait` for type `Wrapper<OpaqueGenerator>` + +fn main() {} |