Re: Assignment operator=/copy constructor/temporaries, BROKEN!

What you describe is horribly broken.

Let's take the example:

  T foo()
  { T y;
    //do stuff
    return y;
  }

  int main()
  { T x = foo();
  }

A good compiler will transform the previous code into the following
(pseudo-)code:

  void foo(T * retval)
  { new (retval) T;
    //do stuff
  }

  int main()
  { //use compiler magic to not invoke constructor here.
    T x;

    //instead, the constructor will be invoked inside foo
    foo( & x );
  }

Voila. No additional dynamic memory allocation is done.

Your understanding of (named) return value optimization and copy
constructor elision is horribly flawed, and your compiler may also be
horribly broken. What compiler are you using? Move to a non-broken
compiler.