// Copyright 2014 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. // pretty-expanded FIXME #23616 #![feature(unboxed_closures)] 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(); }