// Copyright 2012 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.


fn box<T: Copy>(x: {x: T, y: T, z: T}) -> ~{x: T, y: T, z: T} { return ~x; }

fn main() {
    let x: ~{x: int, y: int, z: int} = box::<int>({x: 1, y: 2, z: 3});
    assert (x.y == 2);
}