File: issue-4446.rs

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

use std::sync::mpsc::channel;
use std::thread;

pub fn main() {
    let (tx, rx) = channel();

    tx.send("hello, world").unwrap();

    thread::spawn(move|| {
        println!("{}", rx.recv().unwrap());
    }).join().ok().unwrap();
}