File: issue-9396.rs

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rustc 1.86.0%2Bdfsg1-1
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//@ run-pass
#![allow(unused_must_use)]
#![allow(deprecated)]
//@ needs-threads

use std::sync::mpsc::{channel, TryRecvError};
use std::thread;

pub fn main() {
    let (tx, rx) = channel();
    let t = thread::spawn(move || {
        thread::sleep_ms(10);
        tx.send(()).unwrap();
    });
    loop {
        match rx.try_recv() {
            Ok(()) => break,
            Err(TryRecvError::Empty) => {}
            Err(TryRecvError::Disconnected) => unreachable!(),
        }
    }
    t.join();
}