@@ -39,11 +39,12 @@
 			uint64_t words[80];
 		} buffer;
 		size_t bufferLength;
 	} *_iVars;
 @private
+	bool _allowsSwappableMemory;
 	bool _calculated;
 	OF_RESERVE_IVARS(4)
 }
 @end
 
 OF_ASSUME_NONNULL_END