#include <iostream>
using namespace std;


struct B{
	 int b;
	 ~B(){cout <<"destruct B" << endl;}
};

B func(){
	B b;
	b.b = 1;
	return b;
}
int main(){
	const B& instance = (const B&)func(); 
	cout <<instance.b<<endl;
	return 0;
}

destruct B
destruct B
1