C++菱形继承和菱形虚拟继承关系的虚函数表详解

菱形继承中的虚函数表

class A {
   
public:
	virtual void func1() {
    cout << "A::func1" << endl; }
private:
	int _a;
};

class B :public A{
   
public:
	virtual void func1() {
    cout << "B::func1" << endl; }
	virtual void func2() {
    cout << "B::func2" << endl; }
private:
	int _b;
};
class C :public A{
   
public:
	virtual void func1() {
    cout << "C::func1" << endl; }
	virtual void func2() {
    cout << "C::func2" << endl; }
private:
	int _c;
};
class D : public B, public C {
   
public:
	virtual void func1(