| // Copyright 2015 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. |
| |
| // Regression test for issue #22246 -- we should be able to deduce |
| // that `&'a B::Owned` implies that `B::Owned : 'a`. |
| |
| // pretty-expanded FIXME #23616 |
| |
| #![allow(dead_code)] |
| |
| use std::ops::Deref; |
| |
| pub trait ToOwned: Sized { |
| type Owned: Borrow<Self>; |
| fn to_owned(&self) -> Self::Owned; |
| } |
| |
| pub trait Borrow<Borrowed> { |
| fn borrow(&self) -> &Borrowed; |
| } |
| |
| pub struct Foo<B:ToOwned> { |
| owned: B::Owned |
| } |
| |
| fn foo<B:ToOwned>(this: &Foo<B>) -> &B { |
| this.owned.borrow() |
| } |
| |
| fn main() { } |
