rust/tests/ui/process-termination/process-termination-blocking-io.rs

// program should terminate even if a thread is blocked on I/O.
// https://github.com/fortanix/rust-sgx/issues/109

//@ run-pass
//@ needs-threads

use std::{net::TcpListener, sync::mpsc, thread};

fn main() {
    let (tx, rx) = mpsc::channel();
    thread::spawn(move || {
        let listen = TcpListener::bind("127.0.0.1:0").unwrap();
        tx.send(()).unwrap();
        while let Ok(_) = listen.accept() {}
    });
    rx.recv().unwrap();
    for _ in 0..3 { thread::yield_now(); }
    println!("Exiting main thread");
}