Is “rebinding” references in C++ like this legal?

Question

Is the following legal in C++?

As far as I can tell, Reference has a trivial destructor, so it should be legal.
But I thought references can\'t be r

Answer 1

You aren't rebinding a reference, you're creating a new object in the memory of another one with a placement new. Since the destructor of the old object was never run I think this would be undefined behavior.