DL6ER 10fbc39cf5 Return an empty block from blockdata_alloc() for zero length.
738c049 turned the allocation loop in blockdata_alloc_real() from
do/while into for, so a zero length now returns NULL. find_soa() and
extract_addresses() start the chain for an RR with
blockdata_alloc(NULL, 0) and fill it with blockdata_expand(), so they
now fail on every SOA and every RR that is not an address, e.g., MX,
SRV, or SVCB, and those answers are no longer cached. A zero-length
RR also no longer survives cache_recv_insert().

Allocate one empty block for zero length, as before.

Signed-off-by: DL6ER <dl6er@dl6er.de>
2026-11-02 20:46:27 +00:00
2012-04-02 20:40:34 +01:00
2025-12-07 13:44:40 +00:00
2012-01-05 17:31:15 +00:00
2026-10-01 15:34:53 +01:00
2018-01-14 17:32:52 +00:00
2022-05-13 21:22:11 +01:00
2012-01-05 17:31:13 +00:00
2025-07-20 15:29:43 +01:00
2021-06-15 23:14:59 +01:00
2026-04-08 12:08:18 +01:00
2025-07-20 15:29:43 +01:00
2024-12-18 23:58:58 +00:00
2012-01-05 22:00:08 +00:00
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