探究劫持攻击C++虚函数(超简单)

class animal{public:  virtual void speak(){    cout << "说话" << endl;  }  int age;};class cat :public animal{public:  virtual void speak(){    cout << "喵喵" << endl;    age = 0;  }  };class dog :public animal{public:  virtual void speak(){    cout << "汪汪" << endl;    age = 0;  }
};void fun(){  cout << "虚函数劫持成功" << endl;}int _tmain(int argc, _TCHAR* argv[]){  int *p = (int*)&fun;
  fun();  animal* a1 = new cat();  a1->speak();
  animal* a3 = new cat();  a3->speak();  animal* a2 = new dog();  a2->speak();  return 0;}