src/test/ui/panics/panic-handler-flail-wildly.rs

   1 // run-pass
   2
   3 #![allow(stable_features)]
   4 #![allow(unused_must_use)]
   5
   6 // ignore-emscripten no threads support
   7
   8 #![feature(std_panic)]
   9
  10 use std::panic;
  11 use std::thread;
  12
  13 fn a() {
  14     panic::set_hook(Box::new(|_| println!("hello yes this is a")));
  15     panic::take_hook();
  16     panic::set_hook(Box::new(|_| println!("hello yes this is a part 2")));
  17     panic::take_hook();
  18 }
  19
  20 fn b() {
  21     panic::take_hook();
  22     panic::take_hook();
  23     panic::take_hook();
  24     panic::take_hook();
  25     panic::take_hook();
  26     panic!();
  27 }
  28
  29 fn c() {
  30     panic::set_hook(Box::new(|_| ()));
  31     panic::set_hook(Box::new(|_| ()));
  32     panic::set_hook(Box::new(|_| ()));
  33     panic::set_hook(Box::new(|_| ()));
  34     panic::set_hook(Box::new(|_| ()));
  35     panic::set_hook(Box::new(|_| ()));
  36     panic!();
  37 }
  38
  39 fn main() {
  40     for _ in 0..10 {
  41         let mut handles = vec![];
  42         for _ in 0..10 {
  43             handles.push(thread::spawn(a));
  44         }
  45         for _ in 0..10 {
  46             handles.push(thread::spawn(b));
  47         }
  48         for _ in 0..10 {
  49             handles.push(thread::spawn(c));
  50         }
  51         for handle in handles {
  52             let _ = handle.join();
  53         }
  54     }
  55 }