@@ -617,10 +617,12 @@
 	preMem->next = NULL;
 
 	if (PRE_IVAR->lastMem != NULL)
 		PRE_IVAR->lastMem->next = preMem;
 
+	if (PRE_IVAR->firstMem == NULL)
+		PRE_IVAR->firstMem = preMem;
 	PRE_IVAR->lastMem = preMem;
 
 	return (char*)pointer + PRE_MEM_ALIGN;
 }