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// 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(managed_boxes)]
use std::cell::RefCell;
use std::gc::{Gc, GC};
enum maybe_pointy {
no_pointy,
yes_pointy(Gc<RefCell<Pointy>>),
}
struct Pointy {
x: maybe_pointy
}
pub fn main() {
let m = box(GC) RefCell::new(Pointy { x : no_pointy });
*m.borrow_mut() = Pointy {
x: yes_pointy(m)
};
}
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