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//@ check-pass
//@ compile-flags: -Znext-solver
// Issue 96750
use std::marker::PhantomData;
trait AsyncFn<Arg> {
type Output;
}
trait RequestFamily {
type Type<'a>;
}
trait Service {}
struct MyFn;
impl AsyncFn<String> for MyFn {
type Output = ();
}
impl RequestFamily for String {
type Type<'a> = String;
}
struct ServiceFromAsyncFn<F, Req>(F, PhantomData<Req>);
impl<F, Req, O> Service for ServiceFromAsyncFn<F, Req>
where
Req: RequestFamily,
F: AsyncFn<Req>,
F: for<'a> AsyncFn<Req::Type<'a>, Output = O>,
{
}
fn assert_service() -> impl Service {
ServiceFromAsyncFn(MyFn, PhantomData)
}
fn main() {}
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