| // run-pass |
| #![allow(unused_must_use)] |
| // ignore-emscripten no threads support |
| |
| // This test may not always fail, but it can be flaky if the race it used to |
| // expose is still present. |
| |
| #![feature(mpsc_select)] |
| #![allow(deprecated)] |
| |
| use std::sync::mpsc::{channel, Sender, Receiver}; |
| use std::thread; |
| |
| fn helper(rx: Receiver<Sender<()>>) { |
| for tx in rx.iter() { |
| let _ = tx.send(()); |
| } |
| } |
| |
| fn main() { |
| let (tx, rx) = channel(); |
| let t = thread::spawn(move|| { helper(rx) }); |
| let (snd, rcv) = channel::<isize>(); |
| for _ in 1..100000 { |
| snd.send(1).unwrap(); |
| let (tx2, rx2) = channel(); |
| tx.send(tx2).unwrap(); |
| select! { |
| _ = rx2.recv() => (), |
| _ = rcv.recv() => () |
| } |
| } |
| drop(tx); |
| t.join(); |
| } |
