src/test/run-pass/issues/issue-34053.rs

   1 // Copyright 2016 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 use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
  13
  14 static DROP_COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
  15
  16 struct A(i32);
  17
  18 impl Drop for A {
  19     fn drop(&mut self) {
  20         // update global drop count
  21         DROP_COUNTER.fetch_add(1, Ordering::SeqCst);
  22     }
  23 }
  24
  25 static FOO: A = A(123);
  26 const BAR: A = A(456);
  27
  28 impl A {
  29     const BAZ: A = A(789);
  30 }
  31
  32 fn main() {
  33     assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 0);
  34     assert_eq!(&FOO.0, &123);
  35     assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 0);
  36     assert_eq!(BAR.0, 456);
  37     assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 1);
  38     assert_eq!(A::BAZ.0, 789);
  39     assert_eq!(DROP_COUNTER.load(Ordering::SeqCst), 2);
  40 }