// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![feature(managed_boxes)] extern crate debug; use std::gc::{Gc, GC}; fn f(x: Gc) -> Gc { return x; } pub fn main() { let x = f(box(GC) 3); println!("{:?}", *x); }