#include <iostream>

class MyClass
{
public:
        MyClass() {
                std::cout << "Hello, World!" << std::endl;
        }

        void say(const char *something) {
                std::cout << something << std::endl;
        }

        ~MyClass() {
                std::cout << "Farewell, World!" << std::endl;
        }
};

void my_delete(MyClass *p)
{
        delete p;
}

int main()
{
        MyClass *c = new MyClass();

        c->say("Hey!");

        my_delete(c);
        delete c; // crash

        return 0;
}