src/test/ui/span/macro-span-replacement.rs

   1 // Copyright 2017 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![warn(unused)]
  12
  13 macro_rules! m {
  14     ($a:tt $b:tt) => {
  15         $b $a;
  16     }
  17 }
  18
  19 fn main() {
  20     m!(S struct);
  21 }