src/test/run-pass/issues/issue-15189.rs

   1 // Copyright 2014 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 // run-pass
  12 macro_rules! third {
  13     ($e:expr) => ({let x = 2; $e[x]})
  14 }
  15
  16 fn main() {
  17     let x = vec![10_usize,11_usize,12_usize,13_usize];
  18     let t = third!(x);
  19     assert_eq!(t,12_usize);
  20 }