| //@ known-bug: #120911 | |
| trait Container { | |
| type Item<'a>; | |
| } | |
| impl Container for () { | |
| type Item<'a> = (); | |
| } | |
| struct Exchange<C, F> { | |
| _marker: std::marker::PhantomData<(C, F)>, | |
| } | |
| fn exchange<C, F>(_: F) -> Exchange<C, F> | |
| where | |
| C: Container, | |
| for<'a> F: FnMut(&C::Item<'a>), | |
| { | |
| unimplemented!() | |
| } | |
| trait Parallelization<C> {} | |
| impl<C, F> Parallelization<C> for Exchange<C, F> {} | |
| fn unary_frontier<P: Parallelization<()>>(_: P) {} | |
| fn main() { | |
| let exchange = exchange(|_| ()); | |
| let _ = || { | |
| unary_frontier(exchange); | |
| }; | |
| } |