diff --git a/addressof_test.cpp b/addressof_test.cpp new file mode 100644 index 0000000..62d988c --- /dev/null +++ b/addressof_test.cpp @@ -0,0 +1,46 @@ +// Copyright (C) 2002 Brad King (brad.king@kitware.com) +// Doug Gregor (gregod@cs.rpi.edu) +// +// Permission to copy, use, sell and distribute this software is granted +// provided this copyright notice appears in all copies. +// Permission to modify the code and to distribute modified code is granted +// provided this copyright notice appears in all copies, and a notice +// that the code was modified is included with the copyright notice. +// +// This software is provided "as is" without express or implied warranty, +// and with no claim as to its suitability for any purpose. + +// For more information, see http://www.boost.org + +#define BOOST_INCLUDE_MAIN +#include +#include + +struct useless_type {}; + +class nonaddressable { +public: + void dummy(); // Silence GCC warning: all member of class are private + +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(px)); + + volatile nonaddressable& vx = *px; + BOOST_TEST(boost::addressof(vx) == static_cast(px)); + + const volatile nonaddressable& cvx = *px; + BOOST_TEST(boost::addressof(cvx) == static_cast(px)); + + return 0; +} diff --git a/include/boost/utility/addressof.hpp b/include/boost/utility/addressof.hpp new file mode 100644 index 0000000..ee997ff --- /dev/null +++ b/include/boost/utility/addressof.hpp @@ -0,0 +1,53 @@ +// Copyright (C) 2002 Brad King (brad.king@kitware.com) +// Doug Gregor (gregod@cs.rpi.edu) +// +// Permission to copy, use, sell and distribute this software is granted +// provided this copyright notice appears in all copies. +// Permission to modify the code and to distribute modified code is granted +// provided this copyright notice appears in all copies, and a notice +// that the code was modified is included with the copyright notice. +// +// This software is provided "as is" without express or implied warranty, +// and with no claim as to its suitability for any purpose. + +// For more information, see http://www.boost.org + +#ifndef BOOST_UTILITY_ADDRESSOF_HPP +#define BOOST_UTILITY_ADDRESSOF_HPP + +namespace boost { + +template +inline T* addressof(T& v) +{ + struct addressof_helper {}; + return reinterpret_cast(&reinterpret_cast(v)); +} + +template +inline const T* addressof(const T& v) +{ + struct addressof_helper {}; + return reinterpret_cast( + &reinterpret_cast(v)); +} + +template +inline volatile T* addressof(volatile T& v) +{ + struct addressof_helper {}; + return reinterpret_cast( + &reinterpret_cast(v)); +} + +template +inline const volatile T* addressof(const volatile T& v) +{ + struct addressof_helper {}; + return reinterpret_cast( + &reinterpret_cast(v)); +} + +} + +#endif // BOOST_UTILITY_ADDRESSOF_HPP