rust/src/test/ui/cross-crate-macro-backtrace/main.rs

// Copyright 2012 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.

// error-pattern: in format string

// aux-build:extern_macro_crate.rs
#[macro_use(myprintln, myprint)]
extern crate extern_macro_crate;

fn main() {
    myprintln!("{}");
}