mirror of
https://github.com/rust-lang/rust
synced 2024-11-05 20:45:15 +00:00
24 lines
486 B
Rust
24 lines
486 B
Rust
// 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 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() { }
|