Listing 9 is based on the assumption that the compiler optimizes away the empty base classes.

清单9基于编译器会优化空基类的假设。

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For instance, Microsoft Compiler uses process-neutral offsets to address base objects for virtually inherited classes: thus, this issue does not arise.

例如，Microsoft Compiler 使用进程无关的偏移量来为虚拟继承类指定基对象，因而不存在这个问题。

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It includes all class data members, all class member functions (either explicitly declared, or implicitly generated by the compiler), all base classes of the class, and all their members. Consider.

它包括所有类的数据成员，所有类的成员函数(或者显式声明，或者由编译器隐式生成)，所有类的基类和所有它们的成员。

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