src/test/run-pass/traits/kindck-owned-trait-contains-1.rs

   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.
   4 //
   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.
  10
  11 // run-pass
  12 #![allow(non_snake_case)]
  13 #![allow(non_camel_case_types)]
  14
  15 #![feature(box_syntax)]
  16
  17 trait repeat<A> { fn get(&self) -> A; }
  18
  19 impl<A:Clone + 'static> repeat<A> for Box<A> {
  20     fn get(&self) -> A {
  21         (**self).clone()
  22     }
  23 }
  24
  25 fn repeater<A:Clone + 'static>(v: Box<A>) -> Box<repeat<A>+'static> {
  26     box v as Box<repeat<A>+'static> // No
  27 }
  28
  29 pub fn main() {
  30     let x = 3;
  31     let y = repeater(box x);
  32     assert_eq!(x, y.get());
  33 }