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//@ run-pass
#![allow(unused_must_use)]
#![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<dyn FnMut() + 'static + Send>) {
Builder::new().stack_size(32 * 1024).spawn(move|| f());
}
fn child_no(x: usize) -> Box<dyn FnMut() + 'static + Send> {
Box::new(move|| {
if x < generations {
spawn(child_no(x+1));
}
})
}
pub fn main() {
spawn(child_no(0));
}
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