Storing a pointer to object returned with NRVO

Question

If I write a factory method that instantiates an object locally and then returns by value, intending to take advantage of NRVO (as per some of the answers here: c++11 Return value optimization or move?), will a pointer/reference to the local object point to the object that is assigned the return value of the method?

Object ObjectBuilder::BuildObject( void )
{
    Object obj;

    //this->ObjectReference = obj; //Disregard this
    //OR
    this->ObjectPtr = &obj;

    return obj;
}

In use:

ObjectBuilder builder;

Object newObject = builder.BuildObject();

Does builder.ObjectPtr refer to newObject?

Answer 1

No.

You are storing a dangling pointer.

Your program, when it uses this pointer, will have undefined behaviour and that is that.

No amount of convenient optimisation is going to save you from your fate.