src/test/run-pass/union/union-macro.rs

   1 // Copyright 2016 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 #![feature(untagged_unions)]
  12
  13 macro_rules! duplicate {
  14    ($i: item) => {
  15         mod m1 {
  16             $i
  17         }
  18         mod m2 {
  19             $i
  20         }
  21    }
  22 }
  23
  24 duplicate! {
  25     pub union U {
  26         pub a: u8
  27     }
  28 }
  29
  30 fn main() {
  31     let u1 = m1::U { a: 0 };
  32     let u2 = m2::U { a: 0 };
  33 }