| // Copyright (C) 2003, 2008 Fernando Luis Cacciola Carballal. |
| // Copyright (C) 2015 - 2017 Andrzej Krzemienski. |
| // |
| // Use, modification, and distribution is 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/optional for documentation. |
| // |
| // You are welcome to contact the author at: |
| // akrzemi1@gmail.com |
| |
| #ifndef BOOST_OPTIONAL_DETAIL_OPTIONAL_CONFIG_AJK_28JAN2015_HPP |
| #define BOOST_OPTIONAL_DETAIL_OPTIONAL_CONFIG_AJK_28JAN2015_HPP |
| |
| #include <boost/config.hpp> |
| #include <boost/detail/workaround.hpp> |
| |
| #if (defined BOOST_NO_CXX11_RVALUE_REFERENCES) || (defined BOOST_OPTIONAL_CONFIG_NO_RVALUE_REFERENCES) |
| # define BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES |
| #endif |
| |
| #if BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION,<=700) |
| // AFAICT only Intel 7 correctly resolves the overload set |
| // that includes the in-place factory taking functions, |
| // so for the other icc versions, in-place factory support |
| // is disabled |
| # define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT |
| #endif |
| |
| #if BOOST_WORKAROUND(BOOST_BORLANDC, <= 0x551) |
| // BCB (5.5.1) cannot parse the nested template struct in an inplace factory. |
| # define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT |
| #endif |
| |
| #if !defined(BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT) \ |
| && defined BOOST_BCB_PARTIAL_SPECIALIZATION_BUG |
| // BCB (up to 5.64) has the following bug: |
| // If there is a member function/operator template of the form |
| // template<class Expr> mfunc( Expr expr ) ; |
| // some calls are resolved to this even if there are other better matches. |
| // The effect of this bug is that calls to converting ctors and assignments |
| // are incorrectly sink to this general catch-all member function template as shown above. |
| # define BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION |
| #endif |
| |
| #if !defined(BOOST_NO_MAY_ALIAS) |
| // GCC since 3.3 and some other compilers have may_alias attribute that helps to alleviate |
| // optimizer issues with regard to violation of the strict aliasing rules. The optional< T > |
| // storage type is marked with this attribute in order to let the compiler know that it will |
| // alias objects of type T and silence compilation warnings. |
| # define BOOST_OPTIONAL_DETAIL_USE_ATTRIBUTE_MAY_ALIAS |
| #endif |
| |
| #if (defined(_MSC_VER) && _MSC_VER <= 1800) |
| // on MSCV 2013 and earlier an unwanted temporary is created when you assign from |
| // a const lvalue of integral type. Thus we bind not to the original address but |
| // to a temporary. |
| # define BOOST_OPTIONAL_CONFIG_NO_PROPER_ASSIGN_FROM_CONST_INT |
| #endif |
| |
| #if (defined __GNUC__) && (!defined BOOST_INTEL_CXX_VERSION) && (!defined __clang__) |
| // On some GCC versions an unwanted temporary is created when you copy-initialize |
| // from a const lvalue of integral type. Thus we bind not to the original address but |
| // to a temporary. |
| |
| # if (__GNUC__ < 4) |
| # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT |
| # endif |
| |
| # if (__GNUC__ == 4 && __GNUC_MINOR__ <= 5) |
| # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT |
| # endif |
| |
| # if (__GNUC__ == 5 && __GNUC_MINOR__ < 2) |
| # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT |
| # endif |
| |
| # if (__GNUC__ == 5 && __GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ == 0) |
| # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT |
| # endif |
| |
| #endif // defined(__GNUC__) |
| |
| #if (defined __GNUC__) && (!defined BOOST_NO_CXX11_RVALUE_REFERENCES) |
| // On some initial rvalue reference implementations GCC does it in a strange way, |
| // preferring perfect-forwarding constructor to implicit copy constructor. |
| |
| # if (__GNUC__ == 4 && __GNUC_MINOR__ == 4) |
| # define BOOST_OPTIONAL_CONFIG_NO_LEGAL_CONVERT_FROM_REF |
| # endif |
| |
| # if (__GNUC__ == 4 && __GNUC_MINOR__ == 5) |
| # define BOOST_OPTIONAL_CONFIG_NO_LEGAL_CONVERT_FROM_REF |
| # endif |
| |
| #endif // defined(__GNUC__) |
| |
| #if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_DECLTYPE) && !BOOST_WORKAROUND(BOOST_MSVC, < 1800) && !BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40500) && !defined(__SUNPRO_CC) |
| // this condition is a copy paste from is_constructible.hpp |
| // I also disable SUNPRO, as it seems not to support type_traits correctly |
| #else |
| # define BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT |
| #endif |
| |
| #if defined __SUNPRO_CC |
| # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS |
| #elif (defined _MSC_FULL_VER) && (_MSC_FULL_VER < 190023026) |
| # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS |
| #elif defined BOOST_GCC && !defined BOOST_GCC_CXX11 |
| # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS |
| #elif defined BOOST_GCC_VERSION && BOOST_GCC_VERSION < 40800 |
| # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS |
| #endif |
| |
| |
| // Detect suport for defaulting move operations |
| // (some older compilers implement rvalue references, |
| // defaulted funcitons but move operations are not special members and cannot be defaulted) |
| |
| #ifdef BOOST_NO_CXX11_DEFAULTED_FUNCTIONS |
| # define BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS |
| #elif BOOST_WORKAROUND(BOOST_MSVC, < 1900) |
| # define BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS |
| #elif BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40600) |
| # define BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS |
| #endif |
| |
| |
| #ifdef BOOST_OPTIONAL_CONFIG_NO_DIRECT_STORAGE_SPEC |
| # define BOOST_OPTIONAL_DETAIL_NO_DIRECT_STORAGE_SPEC |
| #endif |
| |
| |
| #endif // header guard |