musl - musl - an implementation of the standard library for Linux-based systems

fix return value of res_send, res_query on errors from nameserver

the internal __res_msend returns 0 on timeout without having obtained any conclusive answer, but in this case has not filled in meaningful anslen. res_send wrongly treated that as success, but returned a zero answer length. any reasonable caller would eventually end up treating that as an error when attempting to parse/validate it, but it should just be reported as an error. alternatively we could return the last-received inconclusive answer (typically servfail), but doing so would require internal changes in __res_msend. this may be considered later.

Diffstat

1 files changed, 1 insertions, 1 deletions