| // 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)] |
| |
| struct node_ { |
| a: Box<cycle> |
| } |
| |
| enum cycle { |
| node(node_), |
| empty |
| } |
| fn main() { |
| let mut x: Box<_> = box cycle::node(node_ {a: box cycle::empty}); |
| // Create a cycle! |
| match *x { |
| cycle::node(ref mut y) => { |
| y.a = x; //~ ERROR cannot move out of |
| } |
| cycle::empty => {} |
| }; |
| } |