#include <string>
#include <iostream>

struct Dummy
{
    explicit Dummy(const std::string& value) : value_(value) {}
    Dummy(const Dummy&) = delete;
    Dummy& operator=(const Dummy&) = delete;
    Dummy(Dummy&&) = delete;
    Dummy& operator=(Dummy&&) = delete;

    void print_this_address() const
    {
        std::cout << "this address: " << this << "n";
    }

    std::string value_;
};

void foo(Dummy&& obj)
{
    std::cout << obj.value_ << "n";
    obj.print_this_address();
}

int main()
{
    Dummy obj("42");
    obj.print_this_address();
    foo(std::move(obj));
    std::cout << obj.value_ << "n";
    return 0;
}

this address: 0x7ffeeb6d2a20
42
this address: 0x7ffeeb6d2a20
42