src/test/ui/panics/panic-handler-set-twice.rs

   1 // run-pass
   2 #![allow(unused_variables)]
   3 #![allow(stable_features)]
   4
   5 #![feature(std_panic)]
   6
   7 // ignore-emscripten no threads support
   8
   9 use std::sync::atomic::{AtomicUsize, Ordering};
  10 use std::panic;
  11 use std::thread;
  12
  13 static A: AtomicUsize = AtomicUsize::new(0);
  14
  15 fn main() {
  16     panic::set_hook(Box::new(|_| ()));
  17     panic::set_hook(Box::new(|info| { A.fetch_add(1, Ordering::SeqCst); }));
  18
  19     let _ = thread::spawn(|| {
  20         panic!();
  21     }).join();
  22
  23     assert_eq!(1, A.load(Ordering::SeqCst));
  24 }