| // Checks that catch_unwind can be used if unwinding is already in progress. |
| // Used to fail when standard library had been compiled with debug assertions, |
| // due to incorrect assumption that a current thread is not panicking when |
| // entering the catch_unwind. |
| // |
| //@ run-pass |
| |
| use std::panic::catch_unwind; |
| |
| #[allow(dead_code)] |
| #[derive(Default)] |
| struct Guard; |
| |
| impl Drop for Guard { |
| fn drop(&mut self) { |
| let _ = catch_unwind(|| {}); |
| } |
| } |
| |
| fn main() { |
| #[cfg(panic = "unwind")] |
| let _ = catch_unwind(|| { |
| let _guard = Guard::default(); |
| panic!(); |
| }); |
| } |
