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Fix #1846.

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[SVN r44705]
This commit is contained in:
Peter Dimov 2008-04-21 21:42:29 +00:00
parent bafe37fdab
commit a5b85eda07
1 changed files with 24 additions and 19 deletions
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39
include/boost/utility/addressof.hpp
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@ -1,6 +1,7 @@
// Copyright (C) 2002 Brad King (brad.king@kitware.com)
// Douglas Gregor (gregod@cs.rpi.edu)
// Peter Dimov
//
// Copyright (C) 2002, 2008 Peter Dimov
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
@ -14,29 +15,33 @@
# include <boost/config.hpp>
# include <boost/detail/workaround.hpp>
namespace boost {
// Do not make addressof() inline. Breaks MSVC 7. (Peter Dimov)
// VC7 strips const from nested classes unless we add indirection here
# if BOOST_WORKAROUND(BOOST_MSVC, == 1300)
template<class T> struct _addp
namespace boost
{
typedef T * type;
};
template <typename T> typename _addp<T>::type
namespace detail
{
# else
template <typename T> T*
# endif
addressof(T& v)
template<class T> struct addressof_impl
{
static inline T * f( T & v, long )
{
return reinterpret_cast<T*>(
&const_cast<char&>(reinterpret_cast<const volatile char &>(v)));
}
static inline T * f( T * v, int )
{
return v;
}
};
} // namespace detail
template<class T> T * addressof( T & v )
{
return boost::detail::addressof_impl<T>::f( v, 0 );
}
// Borland doesn't like casting an array reference to a char reference
// but these overloads work around the problem.
# if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
@ -53,6 +58,6 @@ const T (*addressof(const T (&t)[N]))[N]
}
# endif
}
} // namespace boost
#endif // BOOST_UTILITY_ADDRESSOF_HPP