// 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. struct closure_box<'a> { cl: Box, } fn box_it<'a>(x: Box) -> closure_box<'a> { closure_box {cl: x} } fn call_static_closure(mut cl: closure_box<'static>) { (cl.cl)(); } pub fn main() { let cl_box = box_it(Box::new(|| println!("Hello, world!"))); call_static_closure(cl_box); }