setup windows sync to have a sub-container entry for users e.g.
You can use ldapmodify or (on Windows) Run->adsiedit.msc
Setup windows sync to use cn=testusers,cn=users,dc=example,dc=com as the AD subtree (and use ou=people,dc=example,dc=com or whatever on the DS side) - make sure to set up SSL too in order to test syncing password changes from DS to AD (setting up PassSync is not required) - make sure the sync agreement uses SSL or TLS
Make sure sync is working - e.g. add a user to one side and make sure it syncs to the other side
on the AD side, remove the user entry and the sub-container entry - immediately after this, do an ldap modify operation for the userPassword of the DS user - you should see a crash in the DS shortly thereafter
Created attachment 517460 [details]
93c1399..1e357c1 master -> master
Author: Rich Megginson <firstname.lastname@example.org>
Date: Tue Aug 9 12:20:10 2011 -0600
Reviewed by: nkinder, nhosoi (Thanks!)
Fix Description: Check for NULL DN in send_password_modify - return error
if the DN is NULL.
Platforms tested: RHEL6 x86_64, Windows 2008 64-bit
Flag Day: no
Doc impact: no
No crash observed on DS, when changing the password of the deleted AD user. hence marking the bug as verified.