// 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. #![feature(rustc_diagnostic_macros)] __register_diagnostic!(E0001) __register_diagnostic!(E0001) //~^ ERROR diagnostic code E0001 already registered fn main() { } __build_diagnostic_array!(DIAGNOSTICS)