src/test/ui/panics/panic-recover-propagate.rs

   1 // run-pass
   2 // needs-unwind
   3 // ignore-emscripten no threads support
   4
   5 use std::sync::atomic::{AtomicUsize, Ordering};
   6 use std::panic;
   7 use std::thread;
   8
   9 static A: AtomicUsize = AtomicUsize::new(0);
  10
  11 fn main() {
  12     panic::set_hook(Box::new(|_| {
  13         A.fetch_add(1, Ordering::SeqCst);
  14     }));
  15
  16     let result = thread::spawn(|| {
  17         let result = panic::catch_unwind(|| {
  18             panic!("hi there");
  19         });
  20
  21         panic::resume_unwind(result.unwrap_err());
  22     }).join();
  23
  24     let msg = *result.unwrap_err().downcast::<&'static str>().unwrap();
  25     assert_eq!("hi there", msg);
  26     assert_eq!(1, A.load(Ordering::SeqCst));
  27 }