// Copyright 2016 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. // this error is dispayed in `` // error-pattern:cannot apply unary operator `!` to type `&'static str` // error-pattern:in this expansion of assert! fn main() { assert!("foo"); }