rust/src/test/ui/macro_backtrace/main.rs

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// 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 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, 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
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// compile-flags: -Z external-macro-backtrace
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#[macro_use] extern crate ping;
// a local macro
macro_rules! pong {
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() => { syntax error }; //~ ERROR expected one of
//~^ ERROR expected one of
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}
fn main() {
pong!();
ping!();
}