rust/tests/ui/threads-sendsync/task-comm-15.rs
2023-01-11 09:32:08 +00:00

29 lines
713 B
Rust

// run-pass
#![allow(unused_must_use)]
// ignore-emscripten no threads support
// pretty-expanded FIXME #23616
use std::sync::mpsc::{channel, Sender};
use std::thread;
fn start(tx: &Sender<isize>, i0: isize) {
let mut i = i0;
while i > 0 {
tx.send(0).unwrap();
i = i - 1;
}
}
pub fn main() {
// Spawn a thread that sends us back messages. The parent thread
// is likely to terminate before the child completes, so from
// the child's point of view the receiver may die. We should
// drop messages on the floor in this case, and not crash!
let (tx, rx) = channel();
let t = thread::spawn(move|| {
start(&tx, 10)
});
rx.recv();
t.join();
}