rust/tests/ui/drop/panic-during-drop-14875.rs

//! Regression test for https://github.com/rust-lang/rust/issues/14875

//@ run-pass
//@ needs-unwind
//@ ignore-backends: gcc

// Check that values are not leaked when a dtor panics (#14875)

use std::panic::{self, UnwindSafe};

struct SetInnerOnDrop<'a>(&'a mut bool);

impl<'a> UnwindSafe for SetInnerOnDrop<'a> {}

impl<'a> Drop for SetInnerOnDrop<'a> {
    fn drop(&mut self) {
        *self.0 = true;
    }
}

struct PanicOnDrop;
impl Drop for PanicOnDrop {
    fn drop(&mut self) {
        panic!("test panic");
    }
}

fn main() {
    let mut set_on_drop = false;
    {
        let set_inner_on_drop = SetInnerOnDrop(&mut set_on_drop);
        let _ = panic::catch_unwind(|| {
            let _set_inner_on_drop = set_inner_on_drop;
            let _panic_on_drop = PanicOnDrop;
        });
    }
    assert!(set_on_drop);
}