src/test/run-pass/regions-params.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 // xfail-fast
  12
  13 fn region_identity<'r>(x: &'r uint) -> &'r uint { x }
  14
  15 fn apply<T>(t: T, f: &fn(T) -> T) -> T { f(t) }
  16
  17 fn parameterized(x: &uint) -> uint {
  18     let z = apply(x, ({|y|
  19         region_identity(y)
  20     }));
  21     *z
  22 }
  23
  24 pub fn main() {
  25     let x = 3u;
  26     assert_eq!(parameterized(&x), 3u);
  27 }