src/test/run-make/volatile-intrinsics/main.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 #![feature(core_intrinsics)]
  12
  13 use std::intrinsics::{volatile_load, volatile_store};
  14
  15 pub fn main() {
  16     unsafe {
  17         let mut i : isize = 1;
  18         volatile_store(&mut i, 2);
  19         assert_eq!(volatile_load(&i), 2);
  20     }
  21 }