macro-use-bang.rs

// Copyright 2016 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.

// aux-build:bang_proc_macro.rs

#![feature(proc_macro_non_items)]

#[macro_use]
extern crate bang_proc_macro;

fn main() {
    bang_proc_macro!(println!("Hello, world!"));
    //~^ ERROR: procedural macros cannot be imported with `#[macro_use]`
}