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7c673cae | 1 | // Copyright (C) 2003, 2008 Fernando Luis Cacciola Carballal. |
b32b8144 | 2 | // Copyright (C) 2015 - 2017 Andrzej Krzemienski. |
7c673cae FG |
3 | // |
4 | // Use, modification, and distribution is subject to the Boost Software | |
5 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // See http://www.boost.org/libs/optional for documentation. | |
9 | // | |
10 | // You are welcome to contact the author at: | |
11 | // akrzemi1@gmail.com | |
12 | ||
13 | #ifndef BOOST_OPTIONAL_DETAIL_OPTIONAL_CONFIG_AJK_28JAN2015_HPP | |
14 | #define BOOST_OPTIONAL_DETAIL_OPTIONAL_CONFIG_AJK_28JAN2015_HPP | |
15 | ||
16 | #include <boost/config.hpp> | |
17 | #include <boost/detail/workaround.hpp> | |
18 | ||
19 | #if (defined BOOST_NO_CXX11_RVALUE_REFERENCES) || (defined BOOST_OPTIONAL_CONFIG_NO_RVALUE_REFERENCES) | |
20 | # define BOOST_OPTIONAL_DETAIL_NO_RVALUE_REFERENCES | |
21 | #endif | |
22 | ||
23 | #if BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION,<=700) | |
24 | // AFAICT only Intel 7 correctly resolves the overload set | |
25 | // that includes the in-place factory taking functions, | |
26 | // so for the other icc versions, in-place factory support | |
27 | // is disabled | |
28 | # define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT | |
29 | #endif | |
30 | ||
20effc67 | 31 | #if BOOST_WORKAROUND(BOOST_BORLANDC, <= 0x551) |
7c673cae FG |
32 | // BCB (5.5.1) cannot parse the nested template struct in an inplace factory. |
33 | # define BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT | |
34 | #endif | |
35 | ||
36 | #if !defined(BOOST_OPTIONAL_NO_INPLACE_FACTORY_SUPPORT) \ | |
37 | && defined BOOST_BCB_PARTIAL_SPECIALIZATION_BUG | |
38 | // BCB (up to 5.64) has the following bug: | |
39 | // If there is a member function/operator template of the form | |
40 | // template<class Expr> mfunc( Expr expr ) ; | |
41 | // some calls are resolved to this even if there are other better matches. | |
42 | // The effect of this bug is that calls to converting ctors and assignments | |
43 | // are incorrectly sink to this general catch-all member function template as shown above. | |
44 | # define BOOST_OPTIONAL_WEAK_OVERLOAD_RESOLUTION | |
45 | #endif | |
46 | ||
b32b8144 FG |
47 | #if !defined(BOOST_NO_MAY_ALIAS) |
48 | // GCC since 3.3 and some other compilers have may_alias attribute that helps to alleviate | |
49 | // optimizer issues with regard to violation of the strict aliasing rules. The optional< T > | |
50 | // storage type is marked with this attribute in order to let the compiler know that it will | |
51 | // alias objects of type T and silence compilation warnings. | |
7c673cae FG |
52 | # define BOOST_OPTIONAL_DETAIL_USE_ATTRIBUTE_MAY_ALIAS |
53 | #endif | |
54 | ||
55 | #if (defined(_MSC_VER) && _MSC_VER <= 1800) | |
56 | // on MSCV 2013 and earlier an unwanted temporary is created when you assign from | |
57 | // a const lvalue of integral type. Thus we bind not to the original address but | |
58 | // to a temporary. | |
59 | # define BOOST_OPTIONAL_CONFIG_NO_PROPER_ASSIGN_FROM_CONST_INT | |
60 | #endif | |
61 | ||
62 | #if (defined __GNUC__) && (!defined BOOST_INTEL_CXX_VERSION) && (!defined __clang__) | |
63 | // On some GCC versions an unwanted temporary is created when you copy-initialize | |
64 | // from a const lvalue of integral type. Thus we bind not to the original address but | |
65 | // to a temporary. | |
66 | ||
67 | # if (__GNUC__ < 4) | |
68 | # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT | |
69 | # endif | |
70 | ||
71 | # if (__GNUC__ == 4 && __GNUC_MINOR__ <= 5) | |
72 | # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT | |
73 | # endif | |
74 | ||
75 | # if (__GNUC__ == 5 && __GNUC_MINOR__ < 2) | |
76 | # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT | |
77 | # endif | |
78 | ||
79 | # if (__GNUC__ == 5 && __GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ == 0) | |
80 | # define BOOST_OPTIONAL_CONFIG_NO_PROPER_CONVERT_FROM_CONST_INT | |
81 | # endif | |
82 | ||
83 | #endif // defined(__GNUC__) | |
84 | ||
85 | #if (defined __GNUC__) && (!defined BOOST_NO_CXX11_RVALUE_REFERENCES) | |
86 | // On some initial rvalue reference implementations GCC does it in a strange way, | |
87 | // preferring perfect-forwarding constructor to implicit copy constructor. | |
88 | ||
89 | # if (__GNUC__ == 4 && __GNUC_MINOR__ == 4) | |
90 | # define BOOST_OPTIONAL_CONFIG_NO_LEGAL_CONVERT_FROM_REF | |
91 | # endif | |
92 | ||
93 | # if (__GNUC__ == 4 && __GNUC_MINOR__ == 5) | |
94 | # define BOOST_OPTIONAL_CONFIG_NO_LEGAL_CONVERT_FROM_REF | |
95 | # endif | |
96 | ||
97 | #endif // defined(__GNUC__) | |
98 | ||
b32b8144 FG |
99 | #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) |
100 | // this condition is a copy paste from is_constructible.hpp | |
101 | // I also disable SUNPRO, as it seems not to support type_traits correctly | |
102 | #else | |
103 | # define BOOST_OPTIONAL_DETAIL_NO_IS_CONSTRUCTIBLE_TRAIT | |
104 | #endif | |
105 | ||
106 | #if defined __SUNPRO_CC | |
107 | # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS | |
108 | #elif (defined _MSC_FULL_VER) && (_MSC_FULL_VER < 190023026) | |
109 | # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS | |
110 | #elif defined BOOST_GCC && !defined BOOST_GCC_CXX11 | |
111 | # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS | |
112 | #elif defined BOOST_GCC_VERSION && BOOST_GCC_VERSION < 40800 | |
113 | # define BOOST_OPTIONAL_DETAIL_NO_SFINAE_FRIENDLY_CONSTRUCTORS | |
114 | #endif | |
115 | ||
116 | ||
117 | // Detect suport for defaulting move operations | |
118 | // (some older compilers implement rvalue references, | |
119 | // defaulted funcitons but move operations are not special members and cannot be defaulted) | |
120 | ||
121 | #ifdef BOOST_NO_CXX11_DEFAULTED_FUNCTIONS | |
122 | # define BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS | |
123 | #elif BOOST_WORKAROUND(BOOST_MSVC, < 1900) | |
124 | # define BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS | |
125 | #elif BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40600) | |
126 | # define BOOST_OPTIONAL_DETAIL_NO_DEFAULTED_MOVE_FUNCTIONS | |
127 | #endif | |
128 | ||
129 | ||
130 | #ifdef BOOST_OPTIONAL_CONFIG_NO_DIRECT_STORAGE_SPEC | |
131 | # define BOOST_OPTIONAL_DETAIL_NO_DIRECT_STORAGE_SPEC | |
132 | #endif | |
133 | ||
134 | ||
7c673cae | 135 | #endif // header guard |