//@ run-pass #![allow(unused_variables)] //@ needs-threads use std::thread; use std::mem; fn main() { let y = 0u8; let closure = move |x: u8| y + x; // Check that both closures are capturing by value assert_eq!(1, mem::size_of_val(&closure)); thread::spawn(move|| { let ok = closure; }).join().ok().unwrap(); }