// 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. fn f() { let a_box = box mut 42; //~^ ERROR expected identifier, found keyword `mut` //~^^ ERROR expected `;`, found `42` }