Proposed resolution:

This wording is relative to N4582.

1. Change [memory.syn], header <memory> synopsis, as indicated:

   […]
   // 20.9.12, specialized algorithms:
   template <class T> constexpr T* addressof(T& r) noexcept;
   template <class T> const T* addressof(const T&& elem) = delete;
   […]
   

2. Change [specialized.addressof] p1 as indicated:

   template <class T> constexpr T* addressof(T& r) noexcept;
   template <class T> const T* addressof(const T&& elem) = delete;
   

   -1- Returns: The actual address of the object or function referenced by r, even in the presence of an overloaded operator&.

[ 2016-08 Chicago ]

Tues PM: Move to Tentatively Ready

LWG issue 970 removed the rvalue reference overload for addressof. This allows const prvalues to bind to a call to addressof, which is dissimilar from the behavior of operator&.

const vector<int> a();

void b()
{
  auto x = addressof(a()); // "ok"
  auto y = addressof<const int>(0); // "ok"
  auto z = &a(); //error: cannot take address of a temporary
}