| // 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. |
| |
| #![feature(box_patterns)] |
| #![feature(box_syntax)] |
| |
| use std::ops::Add; |
| |
| #[derive(Clone)] |
| struct foo(Box<usize>); |
| |
| impl Add for foo { |
| type Output = foo; |
| |
| fn add(self, f: foo) -> foo { |
| let foo(box i) = self; |
| let foo(box j) = f; |
| foo(box (i + j)) |
| } |
| } |
| |
| fn main() { |
| let x = foo(box 3); |
| let _y = {x} + x.clone(); // the `{x}` forces a move to occur |
| //~^ ERROR use of moved value: `x` |
| } |
