@@ -29,10 +29,11 @@
 @interface OFStreamSocket: OFStream <OFReadyForReadingObserving,
     OFReadyForWritingObserving>
 {
 	of_socket_t _socket;
 	bool _atEndOfStream;
+	OF_RESERVE_IVARS(4)
 }
 
 /*!
  * @brief Returns a new, autoreleased OFTCPSocket.
  *