Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards


// Copyright (C) 2002 Brad King ( 
//                    Douglas Gregor (
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at

// For more information, see

#include <boost/test/test_tools.hpp>
#include <boost/utility.hpp>

struct useless_type {};

class nonaddressable {
  void dummy(); // Silence GCC warning: all member of class are private

  useless_type operator&() const;

int test_main(int, char*[])
  nonaddressable* px = new nonaddressable();

  nonaddressable& x = *px;
  BOOST_TEST(boost::addressof(x) == px);

  const nonaddressable& cx = *px;
  BOOST_TEST(boost::addressof(cx) == static_cast<const nonaddressable*>(px));

  volatile nonaddressable& vx = *px;
  BOOST_TEST(boost::addressof(vx) == static_cast<volatile nonaddressable*>(px));

  const volatile nonaddressable& cvx = *px;
  BOOST_TEST(boost::addressof(cvx) == static_cast<const volatile nonaddressable*>(px));
  return 0;