gistfile1.c++

#include <iostream>

using namespace std;

class A
{
public:
	
	void release()
	{
		delete this;
	}
	
	void operator delete(void* ptr, size_t s)
	{
		cout << "A" << endl;
	}
};

class B : public A
{
public:
	void operator delete(void* ptr, size_t s)
	{
		cout << "B" << endl;
	}
};

int main()
{
	B* b = new B;
	b->release();
}