1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 #![feature(unboxed_closures)]
13 struct closure_box<'a> {
14 cl: Box<FnMut() + 'a>,
17 fn box_it<'a>(x: Box<FnMut() + 'a>) -> closure_box<'a> {
21 fn call_static_closure(mut cl: closure_box<'static>) {
26 let cl_box = box_it(box |&mut:| println!("Hello, world!"));
27 call_static_closure(cl_box);