(ITS#8413) Assertion in back-mdb/search.c during replication

[quanah@openldap.org]

Full_Name: Quanah Gibson-Mount
Version: 2.4.44
OS: Linux
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (75.111.52.177)


During replication from the accesslog DB, in a 4-way MMR setup, various masters
periodically crash with slapd: search.c:1246: oc_filter: Assertion `f != ((void
*)0)' failed.


This is back-mdb/search.c, not slapd-search.c

This is triggered when a NULL filter is passed through.  However, it should be
impossible for the filter generated by str2filter to ever fail.