1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![feature(box_syntax)]
13 trait repeat<A> { fn get(&self) -> A; }
15 impl<A:Clone + 'static> repeat<A> for Box<A> {
21 fn repeater<A:Clone + 'static>(v: Box<A>) -> Box<repeat<A>+'static> {
22 box v as Box<repeat<A>+'static> // No
27 let y = repeater(box x);
28 assert_eq!(x, y.get());