generated_constructors

#include <iostream>

class MemberClass{
public:
    MemberClass() { std::cout << "MemberClass: default constructor\n"; }
    MemberClass(const MemberClass&) { std::cout << "MemberClass: copy constructor\n"; }
    MemberClass(MemberClass&&) { std::cout << "MemberClass: move constructor\n"; }
    MemberClass& operator=(const MemberClass&) { std::cout << "MemberClass: copy assignment\n"; return *this; }
    MemberClass& operator=(MemberClass&&) { std::cout << "MemberClass: move assignment\n"; return *this; }
};

class Base {
public:
    virtual ~Base() {}

private:
    MemberClass member;
};

class Derived : public Base {
private:
    MemberClass member;
};

int main()
{
    Derived d1;
    Derived d2 = std::move(d1);

    return 0;
}