// 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. const XY_1: i32 = 10; fn main() { const XY_2: i32 = 20; assert_eq!(10, concat_idents!(X, Y_1)); //~ ERROR `concat_idents` is not stable assert_eq!(20, concat_idents!(X, Y_2)); //~ ERROR `concat_idents` is not stable }