The calling function must not care where the stack pointer is currently pointing.
调用的函数一定不能顾虑栈指针当前所指的位置。
A frame function can dynamically allocate stack space and can employ a frame pointer.
帧函数可以动态分配堆栈空间并采用帧指针。
A frame function can dynamically allocate stack space and can employ a frame pointer.
帧函数可以动态分配堆栈空间并采用帧指针。
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