ITS#7850 catch invalid naming attr

servers/slapd/modrdn.c

@@ -432,11 +432,22 @@ slap_modrdn2mods(
 			Debug( LDAP_DEBUG_TRACE,
 				"%s slap_modrdn2mods: %s: %s (new)\n",
 				op->o_log_prefix,
-				rs->sr_text, 
+				rs->sr_text,
 				new_rdn[ a_cnt ]->la_attr.bv_val );
 			goto done;		
 		}
 
+		if ( !desc->ad_type->sat_equality ) {
+			Debug( LDAP_DEBUG_TRACE,
+				"%s slap_modrdn2mods: %s: %s (new)\n",
+				op->o_log_prefix,
+				rs->sr_text,
+				new_rdn[ a_cnt ]->la_attr.bv_val );
+			rs->sr_text = "naming attribute has no equality matching rule";
+			rs->sr_err = LDAP_NAMING_VIOLATION;
+			goto done;
+		}
+
 		/* Apply modification */
 		mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );
 		mod_tmp->sml_desc = desc;