| // edition:2018 | |
| // run-pass | |
| trait Foo { } | |
| impl Foo for () { } | |
| impl<'a, T> Foo for &'a mut T where T: Foo { } | |
| async fn foo_async<T>(_v: T) -> u8 where T: Foo { | |
| 0 | |
| } | |
| async fn bad<T>(v: T) -> u8 where T: Foo { | |
| foo_async(v).await | |
| } | |
| async fn async_main() { | |
| let mut v = (); | |
| let _ = bad(&mut v).await; | |
| let _ = foo_async(&mut v).await; | |
| let _ = bad(v).await; | |
| } | |
| fn main() { | |
| let _ = async_main(); | |
| } |