rust/tests/ui/threads-sendsync/sendfn-spawn-with-fn-arg.rs
2023-01-11 09:32:08 +00:00

22 lines
441 B
Rust

// run-pass
// ignore-emscripten no threads support
use std::thread;
pub fn main() { test05(); }
fn test05_start<F:FnOnce(isize)>(f: F) {
f(22);
}
fn test05() {
let three: Box<_> = Box::new(3);
let fn_to_send = move|n:isize| {
println!("{}", *three + n); // will copy x into the closure
assert_eq!(*three, 3);
};
thread::spawn(move|| {
test05_start(fn_to_send);
}).join().ok().unwrap();
}