easy core dump on panic in rust for debugging

dump_core.rs

pub fn register_panic_handler() {
    let default_panic = std::panic::take_hook();

    std::panic::set_hook(Box::new(move |panic_info| {
        default_panic(panic_info);

        // Don't forget to enable core dumps on your shell with eg `ulimit -c unlimited`
        let pid = std::process::id();
        eprintln!("dumping core for pid {}", std::process::id());

        use libc::kill;
        use libc::SIGQUIT;

        use std::convert::TryInto;
        unsafe { kill(pid.try_into().unwrap(), SIGQUIT) };
    }));
}

fn main() {
    register_panic_handler();
}