rust/src/test/run-pass/regions-static-closure.rs

// 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.

struct closure_box<'self> {
    cl: &'self fn(),
}

fn box_it<'r>(+x: &'r fn()) -> closure_box<'r> {
    closure_box {cl: x}
}

fn call_static_closure(cl: closure_box<'static>) {
    (cl.cl)();
}

pub fn main() {
    let cl_box = box_it(|| debug!("Hello, world!"));
    call_static_closure(cl_box);
}