Re: How to detect const reference to temporary issues at compile or runtime?

In fact the new C++0x library follows a similar approach in regard to
the class template reference_wrapper (which is quite similar to class Y
above):

template <class T> reference_wrapper<T> ref(T&);
template <class T> reference_wrapper<const T> cref(const T&);
template <class T> void ref(const T&&) = delete;
template <class T> void cref(const T&&) = delete;
template <class T> reference_wrapper<T> ref(reference_wrapper<T>);
template <class T> reference_wrapper<const T> cref(reference_wrapper<T>);

and the class template synopsis:

template <class T> class reference_wrapper
[..]
{
public :
      [..]
   // construct/copy/destroy
   reference_wrapper(T&);
   reference_wrapper(T&&) = delete; // do not bind to temporary objects
   reference_wrapper(const reference_wrapper<T>& x);
      [..]
};