This simple design, possible because the data obeys strict LIFO order, means that no complex data structure is needed to track stack contents - a simple pointer to the top of the stack will do.
这种简单的设计，很有可能是考虑到数据操作都符合后进先出（LIFO ）规则，这意味着访问栈的内容并不需要复杂的数据结构，一个简单的栈顶指针就能搞定一切。
You can't access it through a pointer declared as an Order, nor can you pass it to another method expecting an Order as an argument.
您不能通过声明为Order的指针来访问它，您也不能将它传递到另外一个希望以Order作为参数的方法。
In order to statically analyze buffer overflow, efficient and precise pointer analysis must be performed to make certain what target buffer a pointer variable point to.
为了进行静态缓冲区溢出分析，必须首先进行高效而精确的指针分析，以确定指针可能指向的目标缓冲区。
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