#include <iostream>

class a
{
public:
	a()
	{
		std::cout << "construction" << std::endl;
	}
	~a()
	{
		std::cout << "destruction" << std::endl;
	}
};

class guard
{
public:
	a _a;
	a* operator & () 
	{
		return &_a;
	}
};

guard f()
{
	return guard();
}

void g ( a* p )
{
	std::cout << "working with a" << std::endl;
}

int main()
{
	g( &f() );
	
	return 0;
}