rust/src/test/compile-fail/liveness-move-in-while.rs

// 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_syntax)]

fn main() {
    let y: Box<isize> = box 42;
    let mut x: Box<isize>;
    loop {
        println!("{}", y); //~ ERROR use of moved value: `y`
        while true { while true { while true { x = y; x.clone(); } } }
        //~^ ERROR use of moved value: `y`
    }
}