Fixed slapd substring_comp_candidates null intersection bug (ITS#228)

Fixed slapd modify: delete of last attribute value bug (ITS#229)

CHANGES

@@ -2,6 +2,8 @@ OpenLDAP Change Log
 
 Changes included in OpenLDAP 1.2 Release Engineering
 	CVS Tag: OPENLDAP_REL_ENG_1_2
+	Fixed slapd substring_comp_candidates null intersection bug (ITS#228)
+	Fixed slapd modify: delete of last attribute value bug (ITS#229)
 	Build environment
 		Updated Autoconf 2.13 config.guess/config.sub
 		Don't use "ln -s -f file link" (ITS#227)

servers/slapd/back-ldbm/filterindex.c

@@ -345,6 +345,11 @@ substring_comp_candidates(
 			idl_free( tmp );
 			idl_free( tmp2 );
 		}
+
+		/* break if no candidates */
+		if( idl == NULL ) {
+			break;
+		}
 	}
 
 	Debug( LDAP_DEBUG_TRACE, "<= substring_comp_candidates %lu\n",

servers/slapd/back-ldbm/modify.c

@@ -324,6 +324,17 @@ delete_values(
 				a->a_vals[k - 1] = a->a_vals[k];
 			}
 			a->a_vals[k - 1] = NULL;
+
+			/* delete the entire attribute, if no values remain */
+			if ( a->a_vals[0] == NULL) {
+				Debug( LDAP_DEBUG_ARGS,
+					"removing entire attribute %s\n",
+					mod->mod_type, 0, 0 );
+				if ( attr_delete( &e->e_attrs, mod->mod_type ) ) {
+					return LDAP_NO_SUCH_ATTRIBUTE;
+				}
+			}
+
 			break;
 		}