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- // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
- // Use, modification and distribution are subject to the Boost Software License,
- // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt).
- //
- // See http://www.boost.org/libs/type_traits for most recent version including documentation.
- #ifndef BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED
- #define BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED
- #include <boost/type_traits/intrinsics.hpp>
- #include <boost/type_traits/is_pod.hpp>
- #include <boost/type_traits/is_default_constructible.hpp>
- #ifdef BOOST_HAS_TRIVIAL_CONSTRUCTOR
- #ifdef BOOST_HAS_SGI_TYPE_TRAITS
- #include <boost/type_traits/is_same.hpp>
- #elif defined(__GNUC__) || defined(__SUNPRO_CC)
- #include <boost/type_traits/is_volatile.hpp>
- #ifdef BOOST_INTEL
- #include <boost/type_traits/is_pod.hpp>
- #endif
- #endif
- #endif
- #if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 409)) || defined(BOOST_CLANG) || (defined(__SUNPRO_CC) && defined(BOOST_HAS_TRIVIAL_CONSTRUCTOR))
- #include <boost/type_traits/is_default_constructible.hpp>
- #define BOOST_TT_TRIVIAL_CONSTRUCT_FIX && is_default_constructible<T>::value
- #else
- //
- // Mot all compilers, particularly older GCC versions can handle the fix above.
- #define BOOST_TT_TRIVIAL_CONSTRUCT_FIX
- #endif
- namespace boost {
- template <typename T> struct has_trivial_constructor
- #ifdef BOOST_HAS_TRIVIAL_CONSTRUCTOR
- : public integral_constant <bool, ((::boost::is_pod<T>::value || BOOST_HAS_TRIVIAL_CONSTRUCTOR(T)) BOOST_TT_TRIVIAL_CONSTRUCT_FIX)>{};
- #else
- : public integral_constant <bool, ::boost::is_pod<T>::value>{};
- #endif
- template <> struct has_trivial_constructor<void> : public boost::false_type{};
- template <> struct has_trivial_constructor<void const> : public boost::false_type{};
- template <> struct has_trivial_constructor<void const volatile> : public boost::false_type{};
- template <> struct has_trivial_constructor<void volatile> : public boost::false_type{};
- template <class T> struct has_trivial_default_constructor : public has_trivial_constructor<T> {};
- #undef BOOST_TT_TRIVIAL_CONSTRUCT_FIX
- } // namespace boost
- #endif // BOOST_TT_HAS_TRIVIAL_CONSTRUCTOR_HPP_INCLUDED
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