Function notmuch_sys::notmuch_database_open_verbose

pub unsafe extern "C" fn notmuch_database_open_verbose(
    path: *const c_char, 
    mode: notmuch_database_mode_t, 
    database: *mut *mut notmuch_database_t, 
    error_message: *mut *mut c_char
) -> notmuch_status_t

Like notmuch_database_open, except optionally return an error message. This message is allocated by malloc and should be freed by the caller.