With bind 9.4.2, I am seeing a regular assertion and segfault:
    Jul 13 22:26:00 moya named[27422]: rbtdb.c:1174: REQUIRE(prev > 0) failed
    Jul 13 22:26:00 moya named[27422]: exiting (due to assertion failure)

This is on debian, the package version is 9.4.2-10, on a DEC/Compaq alphaserver.
Bind runs for around 24 hours properly before it crashes.  The crash leaves a
core, so here is the backtrace:

#0  0x0000020000544c78 in raise () from /lib/libc.so.6.1
#1  0x0000020000546574 in abort () from /lib/libc.so.6.1
#2  0x0000000120020fc0 in ?? ()
#3  0x00000200000dab44 in dns_rbt_create () from /usr/lib/libdns.so.32
#4  0x00000200000e3e14 in dns_rbtdb_create () from /usr/lib/libdns.so.32
#5  0x0000020000095318 in dns_db_detachnode () from /usr/lib/libdns.so.32
#6  0x0000020000143058 in dns_resolver_shutdown () from /usr/lib/libdns.so.32
#7  0x0000020000147c74 in dns_resolver_prime () from /usr/lib/libdns.so.32
#8  0x000002000047363c in isc_taskmgr_create () from /usr/lib/libisc.so.32
#9  0x00000200004dfefc in start_thread () from /lib/libpthread.so.0
#10 0x00000200005f4734 in clone () from /lib/libc.so.6.1

Any suggestions on how to fix this?  My DNS setup is exceedingly simple, just a
couple domains (one of which is my email address if you want to interrogate
bind).

--
Cheers,
Bob McElrath [ CERN Theory Division ]

"The only way of discovering the limits of the possible is to venture a little
way past them into the impossible." -- Arthur C. Clarke, 1917-2008