#include <iostream>
 
struct Foo {
    Foo() {
        std::cout << "constructor" << std::endl;
    }
    Foo(Foo && x) {
        std::cout << "move" << std::endl;
    }
    Foo(Foo const & x) {
        std::cout << "copy" << std::endl;
    }
    ~Foo() {
        std::cout << "destructor" << std::endl;
    }
};
 
Foo f(bool b) {
    Foo x;
    Foo y;
    if (b) { return x; }
    return y;
}
 
int main() {
   Foo x(f(true));
   std::cout << "fin" << std::endl;
}

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