diff options
Diffstat (limited to 'src/test/ui/type-alias-impl-trait/inference-cycle.rs')
-rw-r--r-- | src/test/ui/type-alias-impl-trait/inference-cycle.rs | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/inference-cycle.rs b/src/test/ui/type-alias-impl-trait/inference-cycle.rs new file mode 100644 index 000000000..79caddf79 --- /dev/null +++ b/src/test/ui/type-alias-impl-trait/inference-cycle.rs @@ -0,0 +1,25 @@ +#![feature(type_alias_impl_trait)] +#![allow(dead_code)] + +mod m { + type Foo = impl std::fmt::Debug; + //~^ ERROR cycle detected + + // Cycle: error today, but it'd be nice if it eventually worked + + pub fn foo() -> Foo { + is_send(bar()) + } + + pub fn bar() { + is_send(foo()); // Today: error + } + + fn baz() { + let f: Foo = 22_u32; + } + + fn is_send<T: Send>(_: T) {} +} + +fn main() {} |