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// check-pass
#![allow(dead_code)]
// pretty-expanded FIXME #23616
trait T0 {
type O;
fn dummy(&self) { }
}
struct S<A>(A);
impl<A> T0 for S<A> { type O = A; }
trait T1: T0 {
// this looks okay but as we see below, `f` is unusable
fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool;
}
// complains about the bounds on F here not being required by the trait
impl<A> T1 for S<A> {
fn m0<F: Fn(A) -> bool>(self, f: F) -> bool { f(self.0) }
}
// // complains about mismatched types: <S<A> as T0>::O vs. A
// impl<A> T1 for S<A>
// {
// fn m0<F: Fn(<Self as T0>::O) -> bool>(self, f: F) -> bool { f(self.0) }
// }
fn main() { }
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