char data[1];
} MCAllocatedSpace;
-#define MCASHDRSZ ( sizeof(size_t) + sizeof(MemoryContext*) )
+#define MCASHDRSZ offsetof(MCAllocatedSpace, data)
#define MCMAGICKNUMBER (0xFE0FBEEF)
MemoryContext *allocMemoryContext(MemoryContext* parent, int flags);