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Imported Upstream version 1.9.0+dfsg1
[rustc.git] / src / test / run-pass / panic-handler-chain.rs
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1// Copyright 2015 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#![feature(panic_handler, const_fn, std_panic)]
11
12use std::sync::atomic::{AtomicUsize, Ordering};
13use std::panic;
14use std::thread;
15
16static A: AtomicUsize = AtomicUsize::new(0);
17static B: AtomicUsize = AtomicUsize::new(0);
18
19fn main() {
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20 panic::set_hook(Box::new(|_| { A.fetch_add(1, Ordering::SeqCst); }));
21 let hook = panic::take_hook();
22 panic::set_hook(Box::new(move |info| {
9cc50fc6 23 B.fetch_add(1, Ordering::SeqCst);
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24 hook(info);
25 }));
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26
27 let _ = thread::spawn(|| {
28 panic!();
29 }).join();
30
31 assert_eq!(1, A.load(Ordering::SeqCst));
32 assert_eq!(1, B.load(Ordering::SeqCst));
33}