src/test/compile-fail-fulldeps/proc-macro/shadow.rs


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// 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:derive-a.rs

#![feature(proc_macro)]

#[macro_use]
extern crate derive_a;
#[macro_use]
extern crate derive_a; //~ ERROR `derive_a` has already been defined

fn main() {}