mirror of https://github.com/rust-lang/rust
31 lines
544 B
Rust
31 lines
544 B
Rust
//@ check-pass
|
|
#![allow(dead_code)]
|
|
//@ pretty-expanded FIXME #23616
|
|
|
|
pub trait Borrow<Borrowed: ?Sized> {
|
|
fn borrow(&self) -> &Borrowed;
|
|
}
|
|
|
|
impl<T: Sized> Borrow<T> for T {
|
|
fn borrow(&self) -> &T { self }
|
|
}
|
|
|
|
trait Foo {
|
|
fn foo(&self, other: &Self);
|
|
}
|
|
|
|
fn bar<K, Q>(k: &K, q: &Q) where K: Borrow<Q>, Q: Foo {
|
|
q.foo(k.borrow())
|
|
}
|
|
|
|
struct MyTree<K>(K);
|
|
|
|
impl<K> MyTree<K> {
|
|
// This caused a failure in #18906
|
|
fn bar<Q>(k: &K, q: &Q) where K: Borrow<Q>, Q: Foo {
|
|
q.foo(k.borrow())
|
|
}
|
|
}
|
|
|
|
fn main() {}
|