| // 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. |
| |
| #[macro_export] |
| macro_rules! foo { ($i:ident) => {} } |
| |
| #[macro_export] |
| macro_rules! foo { () => {} } //~ ERROR a macro named `foo` has already been exported |
| //~| WARN this was previously accepted |
