src/test/run-pass/issue-8851.rs

   1 // Copyright 2013 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 // after fixing #9384 and implementing hygiene for match bindings,
  12 // this now fails because the insertion of the 'y' into the match
  13 // doesn't cause capture. Making this macro hygienic (as I've done)
  14 // could very well make this test case completely pointless....
  15
  16 // pretty-expanded FIXME #23616
  17
  18 enum T {
  19     A(isize),
  20     B(usize)
  21 }
  22
  23 macro_rules! test {
  24     ($id:ident, $e:expr) => (
  25         fn foo(t: T) -> isize {
  26             match t {
  27                 T::A($id) => $e,
  28                 T::B($id) => $e
  29             }
  30         }
  31     )
  32 }
  33
  34 test!(y, 10 + (y as isize));
  35
  36 pub fn main() {
  37     foo(T::A(20));
  38 }