// run-pass // ignore-emscripten no threads support use std::thread::{self, sleep}; use std::time::Duration; use std::sync::{Arc, Mutex}; fn main() { let finished = Arc::new(Mutex::new(false)); let t_finished = finished.clone(); thread::spawn(move || { sleep(Duration::new(u64::MAX, 0)); *t_finished.lock().unwrap() = true; }); sleep(Duration::from_millis(100)); assert_eq!(*finished.lock().unwrap(), false); }