tests/ui/issues/issue-68696-catch-during-unwind.rs

   1 // Checks that catch_unwind can be used if unwinding is already in progress.
   2 // Used to fail when standard library had been compiled with debug assertions,
   3 // due to incorrect assumption that a current thread is not panicking when
   4 // entering the catch_unwind.
   5 //
   6 // run-pass
   7
   8 use std::panic::catch_unwind;
   9
  10 #[derive(Default)]
  11 struct Guard;
  12
  13 impl Drop for Guard {
  14     fn drop(&mut self) {
  15         let _ = catch_unwind(|| {});
  16     }
  17 }
  18
  19 fn main() {
  20     #[cfg(panic = "unwind")]
  21     let _ = catch_unwind(|| {
  22         let _guard = Guard::default();
  23         panic!();
  24     });
  25 }