GitLab

	The correct class was not being passed to dns_rdata_fromtext().

check of dns_rbtnodechain_current().

level_count was decremented below zero because the found node had not
been put in the level history before the callback broke out of the search.

Added a bunch of INSISTS()s to try to catch something like that in the future.

isc_dynbuffer_allocate() and freed with isc_dynbuffer_free(), and are
a linkable buffer type with a built-in data area.

NODENAME() on a NULL chain->end (such as after the chain has been reset.)

It wasn't that chain->end was being included (it should have been) but
that the chain had already been expanded to point down a level before
the call to chain_name that needed the state of things before the
descent.