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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
pub trait Foo {
type Associated;
}
pub struct X;
pub struct Y;
impl Foo for X {
type Associated = ();
}
impl Foo for Y {
type Associated = ();
}
impl X {
pub fn returns_sized<'a>(&'a self) -> impl Foo<Associated=()> + 'a {
X
}
}
impl Y {
pub fn returns_unsized<'a>(&'a self) -> Box<impl ?Sized + Foo<Associated=()> + 'a> {
Box::new(X)
}
}
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