Re: (ITS#6916) slapo-unique returns operations error when assertion control is used

[michael@stroeder.com]

Further observations show that...

1. processing add requests seems to behave like expected.

2. it depends on the assertion filter sent in the control value:

$ ldapmodify -H ldap://localhost -D "uid=Mstroeder,dc=stroeder,dc=de" -W -f
uidnumber_clash.ldif -e 'assert=(cn=*)'
modifying entry "uid=ttester,dc=stroeder,dc=de"
ldap_modify: Operations error (1)
	additional info: unique_search failed

$ ldapmodify -H ldap://localhost -D "uid=Mstroeder,dc=stroeder,dc=de" -W -f
uidnumber_clash.ldif -e 'assert=(objectClass=*)'
modifying entry "uid=ttester,dc=stroeder,dc=de"
ldap_modify: Constraint violation (19)
	additional info: some attributes not unique