alibaba / alibaba/bytekit

store->callback-load作用

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![image](https://user-images.githubusercontent.com/78407588/157286287-b8a19aa6-3a24-48d9-ad9c-7b3679bdfd14.png)
如上逻辑,store -> callback ->load,理论上,调用完callback,栈顶数据应该是原来的数据啊,比如return指令之前插入的callback,那callback执行完后栈顶应该是return的值。感觉store->load看上去是多余的。所以这对操作的作用是什么,防止一些异常情况污染操作数栈?

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