(ITS#4856) Back-SQL + Subtree search hits 'assert(0)'

[vargok@yahoo.com]

Full_Name: K Vargo
Version: 2.3.32
OS: Linux (RH-EL4)
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (128.237.233.195)


Given a Base-DN, Subtree scoped ldapsearch, while the database contains
non-DN-matching items runs up against the 'assert(0)' in Back-SQL/search.c
+2186.

Based on how the selection works, there doesn't appear to be a reason for the
assertion.  The FIXME does not indicate WHY the dnIsSuffix should never fail:
the comparison in dnIsSuffix tries to compare incompatible-dn records and fails
-- as it should.

Removing the assertion provides for the expected behavior in my simple case.
Basically, it appears that a Base-DN is not being pre-filtered by the Back-SQL
selection search, so it needs to be filtered by the dnIsSuffix check.

While I could certainly see that my metadata is not correct (stock metadata from
2.3 + changes from 200511/msg00504.html) I'm not sure an assert(0) is
appropriate.

Additionally, there's no indication that back-sql can't support data with
multiple DNs.