// Copyright 2013 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 use std::sync::mpsc::channel; fn foo(blk: F) { blk(); } pub fn main() { let (tx, rx) = channel(); foo(move || { tx.send(()).unwrap(); }); rx.recv().unwrap(); }