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Mode aligned_storage<>::type report true to is_pod.

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[SVN r26960]
This commit is contained in:
John Maddock
2005-01-31 13:50:40 +00:00
parent 0a79e9cb27
commit 0349d29c67
1 changed files with 30 additions and 8 deletions
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38
include/boost/type_traits/aligned_storage.hpp
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@@ -10,23 +10,45 @@
#define BOOST_TT_ALIGNED_STORAGE_HPP_INCLUDED
#include "boost/type_traits/type_with_alignment.hpp"
#include <boost/type_traits/is_pod.hpp>
// should be the last #include
#include "boost/type_traits/detail/bool_trait_def.hpp"
namespace boost {
namespace detail{
template <class T, std::size_t N>
struct storage
{
union
{
char m_buf[N];
T m_align;
};
};
}
#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
template <class T, std::size_t K>
struct is_pod<boost::detail::storage<T,K> >
BOOST_TT_AUX_BOOL_C_BASE(true)
{
BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(true)
};
#endif
template <std::size_t Len, std::size_t Align>
struct aligned_storage
{
typedef typename type_with_alignment<Align>::type aligned_type;
struct type{
union
{
char m_buf[Len];
aligned_type m_align;
};
};
typedef typename type_with_alignment<Align>::type aligned_type;
typedef detail::storage<aligned_type,Len> type;
};
} // namespace boost
#include "boost/type_traits/detail/bool_trait_undef.hpp"
#endif // BOOST_TT_ALIGNED_STORAGE_HPP_INCLUDED