20 Memory management library [mem]

20.2 Memory [memory]

20.2.10 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 ([defns.const.subexpr]) if E is an lvalue constant subexpression.