You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: macros.rs
    path of file: ./repos/tikv/components/tikv_util/src
    
    the code of the file until where you have to start completion: // Copyright 2016 TiKV Proj
    
    fn test_safe_panic() {
        struct S;
        impl Drop for S {
            fn drop(&mut self) {
                safe_panic!("safe panic on drop");
            }
        }

        let res = panic_hook::recover_safe(|| {
            let _s = S;
            panic!("first panic");
        });
        res.unwrap_err();
    }