23 General utilities library [utilities]

23.10 Memory [memory]

23.10.10 Specialized algorithms [specialized.algorithms] addressof [specialized.addressof]

template <class T> constexpr T* addressof(T& r) noexcept;
Returns: The actual address of the object or function referenced by r, even in the presence of an overloaded operator&.
Remarks: An expression addressof(E) is a constant subexpression if E is an lvalue constant subexpression.