src/test/run-pass/match-value-binding-in-guard-3291.rs

   1 // Copyright 2012 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 // pretty-expanded FIXME #23616
  12
  13 #![allow(unknown_features)]
  14 #![feature(box_syntax)]
  15
  16 fn foo(x: Option<Box<isize>>, b: bool) -> isize {
  17     match x {
  18       None => { 1 }
  19       Some(ref x) if b => { *x.clone() }
  20       Some(_) => { 0 }
  21     }
  22 }
  23
  24 pub fn main() {
  25     foo(Some(box 22), true);
  26     foo(Some(box 22), false);
  27     foo(None, true);
  28     foo(None, false);
  29 }