// Copyright 2015 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. fn main() { use std::boxed::HEAP; let x = box 'c'; //~ ERROR box expression syntax is experimental println!("x: {}", x); let x = box () 'c'; //~ ERROR box expression syntax is experimental println!("x: {}", x); let x = box (HEAP) 'c'; //~ ERROR box expression syntax is experimental println!("x: {}", x); }