rust/src/test/ui/impl-trait/bounds_regression.rs
2019-07-27 18:56:16 +03:00

24 lines
412 B
Rust

// run-pass
pub trait FakeGenerator {
type Yield;
type Return;
}
pub trait FakeFuture {
type Output;
}
pub fn future_from_generator<
T: FakeGenerator<Yield = ()>
>(x: T) -> impl FakeFuture<Output = T::Return> {
GenFuture(x)
}
struct GenFuture<T: FakeGenerator<Yield = ()>>(T);
impl<T: FakeGenerator<Yield = ()>> FakeFuture for GenFuture<T> {
type Output = T::Return;
}
fn main() {}