客户端编译生成的代码能够自由存取vtable指针里的所有表，vtable始终在对象的内存映象的前4个字节里。

Code generated by a client's compiler can freely access all these tables through the vtable pointer, which is always located in the first 4 bytes of the memory image of the object.

youdao

客户端编译生成的代码能够自由存取vtable指针里的所有表，vtable始终在对象的内存映象的前4个字节里。

Code generated by a client's compiler can freely access all these tables through the vtable pointer, which is always located in the first 4 bytes of the memory image of the object.

youdao