// Copyright 2012-2014 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.

// run-pass
#![allow(non_upper_case_globals)]

// pretty-expanded FIXME #23616
// ignore-emscripten no threads

use std::thread::Builder;

static generations: usize = 1024+256+128+49;

fn spawn(mut f: Box<FnMut() + 'static + Send>) {
    Builder::new().stack_size(32 * 1024).spawn(move|| f());
}

fn child_no(x: usize) -> Box<FnMut() + 'static + Send> {
    Box::new(move|| {
        if x < generations {
            spawn(child_no(x+1));
        }
    })
}

pub fn main() {
    spawn(child_no(0));
}