Understanding which constructor gets called [duplicate]

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• What are copy elision and return value optimization? 4 answers

I have a struct which stores an int:

struct foo {
    int value;

    foo(int value) : value(value) {
        std::cout << "value constr\n";
    }

    foo(foo const&) {
        std::cout << "copy constr\n";
    }

    foo(foo&&) {
        std::cout << "move constr\n";
    }
};

In the main method I do the following:

foo bar = foo(foo(foo(42)));

At that point I expect the usual constructor to be called at first and then move constructor several times because the argument will be an rvalue. However, the output is only "value constr".

Why neither copy nor move constructors are called and what actually happens in this example?