// Copyright 2017 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. // Test that the macro backtrace facility works // aux-build:ping.rs // compile-flags: -Z external-macro-backtrace #[macro_use] extern crate ping; // a local macro macro_rules! pong { () => { syntax error }; } fn main() { pong!(); ping!(); }