Function gethostbyname2_r 

pub unsafe extern "C" fn gethostbyname2_r(
    __name: *const c_char,
    __af: c_int,
    __result_buf: *mut hostent,
    __buf: *mut c_char,
    __buflen: usize,
    __result: *mut *mut hostent,
    __h_errnop: *mut c_int,
) -> c_int