Make fusion::pair trivially copyable if possible

.travis.yml

@@ -11,6 +11,11 @@ os:
   - linux
   - osx
 
+branches:
+  only:
+    - master
+    - develop
+
 env:
   matrix:
     - BOGUS_JOB=true
@@ -25,20 +30,6 @@ matrix:
     - os: linux
       env: TOOLSET=gcc CXXSTD=03,11,1y
 
-    - os: linux
-      env: TOOLSET=gcc-4.4 CXXSTD=98,0x
-      addons:
-        apt:
-          packages:
-            - g++-4.4
-
-    - os: linux
-      env: TOOLSET=gcc-4.6 CXXSTD=03,0x
-      addons:
-        apt:
-          packages:
-            - g++-4.6
-
     - os: linux
       env: TOOLSET=gcc-4.7 CXXSTD=03,11
       addons:
@@ -162,17 +153,6 @@ matrix:
             - ubuntu-toolchain-r-test
             - llvm-toolchain-trusty-4.0
 
-    - os: linux
-      env: TOOLSET=clang-5.0 CXXSTD=03,11,14,1z,2a
-      addons:
-        apt:
-          packages:
-            - clang-5.0
-            - libstdc++-4.9-dev
-          sources:
-            - ubuntu-toolchain-r-test
-            - llvm-toolchain-trusty-5.0
-
     - os: osx
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=03,11,14,1z
 

appveyor.yml

@@ -7,35 +7,25 @@ version: 1.0.{build}-{branch}
 
 shallow_clone: true
 
+branches:
+  only:
+    - master
+    - develop
+
 environment:
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
       TOOLSET: msvc-9.0
-      CXXSTD: latest # fake
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
       TOOLSET: msvc-10.0
-      CXXSTD: latest # fake
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
       TOOLSET: msvc-11.0
-      CXXSTD: latest # fake
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
       TOOLSET: msvc-12.0
-      CXXSTD: latest # fake
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       TOOLSET: msvc-14.0
-      CXXSTD: 14
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-      TOOLSET: msvc-14.0
-      CXXSTD: latest
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
       TOOLSET: msvc-14.1
-      CXXSTD: 14
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      TOOLSET: msvc-14.1
-      CXXSTD: 17
-    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
-      TOOLSET: msvc-14.1
-      CXXSTD: latest
 
 install:
   - set BOOST_BRANCH=develop
@@ -82,4 +72,4 @@ install:
 build: off
 
 test_script:
-  - b2 -j%NUMBER_OF_PROCESSORS% --hash libs/fusion/test toolset=%TOOLSET% cxxstd=%CXXSTD%
+  - b2 -j%NUMBER_OF_PROCESSORS% --hash libs/fusion/test toolset=%TOOLSET%

doc/adapted.qbk

@@ -23,6 +23,19 @@ various data structures, non-intrusively, as full fledged Fusion sequences.
     #include <boost/fusion/adapted.hpp>
     #include <boost/fusion/include/adapted.hpp>
 
+Fusion sequences may also be adapted as fully conforming __mpl__ sequences (see
+__intrinsics__). That way, we can have 2-way adaptation to and from __mpl__ and
+Fusion. To make Fusion sequences fully conforming __mpl__ sequences, include:
+
+    #include <boost/fusion/mpl.hpp>
+
+If you want bi-directional adaptation to and from __mpl__ and Fusion, simply
+include:
+
+    #include <boost/fusion/include/mpl.hpp>
+
+The header includes all the necessary headers.
+
 [section:array Array]
 
 This module provides adapters for arrays. Including the module
@@ -132,21 +145,6 @@ header makes all __mpl__ sequences fully conforming fusion sequences.
     std::cout << __at_c__<0>(v) << std::endl;
     std::cout << __at_c__<1>(v) << std::endl;
 
-[heading Bi-directional adaptation]
-
-Fusion sequences may also be adapted as fully conforming __mpl__ sequences (see
-__intrinsics__). That way, we can have 2-way adaptation to and from __mpl__ and
-Fusion. To make Fusion sequences fully conforming __mpl__ sequences, include:
-
-    #include <boost/fusion/mpl.hpp>
-
-If you want bi-directional adaptation to and from __mpl__ and Fusion, simply
-include:
-
-    #include <boost/fusion/include/mpl.hpp>
-
-The header includes all the necessary headers.
-
 [heading See also]
 
 __mpl__

doc/sequence.qbk

@@ -1522,16 +1522,6 @@ each element. Analogously, the global `operator>>` has been overloaded
 to extract __sequence__(s) from generic input streams by recursively
 calling `operator>>` for each element.
 
-Please note that, to display your adapted types via fusion IO system,
-corresponding overloaded operators should be introduced to same namespace
-of the type.
-
-    namespace your_awesome_library
-    {
-        using boost::fusion::operators::operator>>; // for input
-        using boost::fusion::operators::operator<<; // for output
-        ...
-
 The default delimiter between the elements is space, and the __sequence__
 is enclosed in parenthesis. For Example:
 

doc/view.qbk

@@ -93,9 +93,10 @@ presents only those elements for which its predicate evaluates to
 [heading Template parameters]
 
 [table
-    [[Parameter]            [Description]                       [Default]]
-    [[`Sequence`]           [A __forward_sequence__]            []]
-    [[`Pred`]               [A unary __mpl_lambda_expression__] []]
+    [[Parameter]            [Description]               [Default]]
+    [[`Sequence`]           [A __forward_sequence__]    []]
+    [[`Pred`]               [Unary Metafunction
+                             returning an `mpl::bool_`] []]
 ]
 
 [heading Model of]
@@ -270,7 +271,7 @@ defined in the implemented models.
 [heading Description]
 
 `zip_view` presents a view which iterates over a collection of __sequence__(s) in parallel. A `zip_view`
-is constructed from a __sequence__ of references to the component `__sequence__`s.
+is constructed from a __sequence__ of references to the component __sequence__s.
 
 [heading Header]
 
@@ -286,7 +287,7 @@ is constructed from a __sequence__ of references to the component `__sequence__`
 
 [table
     [[Parameter]            [Description]                   [Default]]
-    [[`Sequences`]          [A __forward_sequence__ of references to other Fusion `__sequence__`s]        []]
+    [[`Sequences`]          [A __forward_sequence__ of references to other Fusion __sequence__s]        []]
 ]
 
 [heading Model of]
@@ -308,7 +309,7 @@ defined in __forward_sequence__.
 
 [table
     [[Expression]           [Semantics]]
-    [[`ZV(s)`]              [Creates a `zip_view` given a sequence of references to the component `__sequence__`s.]]
+    [[`ZV(s)`]              [Creates a `zip_view` given a sequence of references to the component __sequence__s.]]
     [[`ZV(zv1)`]             [Copy constructs a `zip_view` from another `zip_view`, `zv`.]]
     [[`zv1 = zv2`]           [Assigns to a `zip_view`, `zv`, from another `zip_view`, `zv2`.]]
 ]

include/boost/fusion/algorithm/iteration/detail/for_each.hpp

@@ -30,7 +30,7 @@ namespace detail
     template <typename First, typename Last, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
     inline void
-    for_each_linear(First const& first, Last const& last, F& f, mpl::false_)
+    for_each_linear(First const& first, Last const& last, F const& f, mpl::false_)
     {
         f(*first);
         detail::for_each_linear(fusion::next(first), last, f, 
@@ -41,7 +41,7 @@ namespace detail
     template <typename Sequence, typename F, typename Tag>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
     inline void
-    for_each_dispatch(Sequence& seq, F& f, Tag)
+    for_each_dispatch(Sequence& seq, F const& f, Tag)
     {
         detail::for_each_linear(
                                 fusion::begin(seq)
@@ -57,7 +57,7 @@ namespace detail
     {
         template<typename I0, typename F>
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        static void call(I0 const& i0, F& f)
+        static void call(I0 const& i0, F const& f)
         {
             f(*i0);
             typedef typename result_of::next<I0>::type I1;
@@ -78,7 +78,7 @@ namespace detail
     {
         template<typename I0, typename F>
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        static void call(I0 const& i0, F& f)
+        static void call(I0 const& i0, F const& f)
         {
             f(*i0);
             typedef typename result_of::next<I0>::type I1;
@@ -95,7 +95,7 @@ namespace detail
     {
         template<typename I0, typename F>
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        static void call(I0 const& i0, F& f)
+        static void call(I0 const& i0, F const& f)
         {
             f(*i0);
             typedef typename result_of::next<I0>::type I1;
@@ -109,7 +109,7 @@ namespace detail
     {
         template<typename I0, typename F>
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        static void call(I0 const& i0, F& f)
+        static void call(I0 const& i0, F const& f)
         {
             f(*i0);
         }
@@ -128,7 +128,7 @@ namespace detail
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
     inline void
-    for_each_dispatch(Sequence& seq, F& f, random_access_traversal_tag)
+    for_each_dispatch(Sequence& seq, F const& f, random_access_traversal_tag)
     {
         typedef typename result_of::begin<Sequence>::type begin;
         typedef typename result_of::end<Sequence>::type end;
@@ -138,7 +138,7 @@ namespace detail
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
     inline void
-    for_each(Sequence& seq, F& f, mpl::false_) // unsegmented implementation
+    for_each(Sequence& seq, F const& f, mpl::false_) // unsegmented implementation
     {
         detail::for_each_dispatch(seq, f, typename traits::category_of<Sequence>::type());
     }

include/boost/fusion/algorithm/iteration/detail/segmented_for_each.hpp

@@ -19,11 +19,11 @@ namespace boost { namespace fusion { namespace detail
     struct segmented_for_each_fun
     {
         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        explicit segmented_for_each_fun(Fun& f)
+        explicit segmented_for_each_fun(Fun const& f)
           : fun(f)
         {}
 
-        Fun& fun;
+        Fun const& fun;
 
         template <typename Sequence, typename State, typename Context>
         struct apply
@@ -43,7 +43,7 @@ namespace boost { namespace fusion { namespace detail
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
     inline void
-    for_each(Sequence& seq, F& f, mpl::true_) // segmented implementation
+    for_each(Sequence& seq, F const& f, mpl::true_) // segmented implementation
     {
         fusion::segmented_fold_until(seq, void_(), segmented_for_each_fun<F>(f));
     }

include/boost/fusion/algorithm/iteration/for_each.hpp

@@ -1,7 +1,6 @@
 /*=============================================================================
     Copyright (c) 2001-2007 Joel de Guzman
     Copyright (c) 2007 Dan Marsden
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -14,7 +13,7 @@
 #include <boost/fusion/algorithm/iteration/detail/segmented_for_each.hpp>
 #include <boost/fusion/support/is_segmented.hpp>
 #include <boost/fusion/support/is_sequence.hpp>
-#include <boost/core/enable_if.hpp>
+#include <boost/utility/enable_if.hpp>
 
 namespace boost { namespace fusion
 {
@@ -29,16 +28,24 @@ namespace boost { namespace fusion
 
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-    inline typename enable_if<traits::is_sequence<Sequence> >::type
-    for_each(Sequence& seq, F f)
+    inline typename
+        enable_if<
+            traits::is_sequence<Sequence>
+          , void
+        >::type
+    for_each(Sequence& seq, F const& f)
     {
         detail::for_each(seq, f, typename traits::is_segmented<Sequence>::type());
     }
 
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-    inline typename enable_if<traits::is_sequence<Sequence> >::type
-    for_each(Sequence const& seq, F f)
+    inline typename
+        enable_if<
+            traits::is_sequence<Sequence>
+          , void
+        >::type
+    for_each(Sequence const& seq, F const& f)
     {
         detail::for_each(seq, f, typename traits::is_segmented<Sequence>::type());
     }

include/boost/fusion/algorithm/iteration/for_each_fwd.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2011 Eric Niebler
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -10,7 +9,7 @@
 
 #include <boost/fusion/support/config.hpp>
 #include <boost/fusion/support/is_sequence.hpp>
-#include <boost/core/enable_if.hpp>
+#include <boost/utility/enable_if.hpp>
 
 namespace boost { namespace fusion
 {
@@ -22,13 +21,21 @@ namespace boost { namespace fusion
 
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-    inline typename enable_if<traits::is_sequence<Sequence> >::type
-    for_each(Sequence& seq, F f);
+    inline typename
+        enable_if<
+            traits::is_sequence<Sequence>
+          , void
+        >::type
+    for_each(Sequence& seq, F const& f);
 
     template <typename Sequence, typename F>
     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-    inline typename enable_if<traits::is_sequence<Sequence> >::type
-    for_each(Sequence const& seq, F f);
+    inline typename
+        enable_if<
+            traits::is_sequence<Sequence>
+          , void
+        >::type
+    for_each(Sequence const& seq, F const& f);
 }}
 
 #endif

include/boost/fusion/container/deque/detail/keyed_element.hpp

@@ -13,11 +13,6 @@
 #include <boost/fusion/iterator/deref.hpp>
 #include <boost/fusion/iterator/next.hpp>
 
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && BOOST_WORKAROUND(BOOST_GCC, / 100 == 404)
-#include <boost/core/enable_if.hpp>
-#include <boost/type_traits/is_same.hpp>
-#endif
-
 namespace boost { namespace fusion
 {
     struct fusion_sequence_tag;
@@ -119,13 +114,8 @@ namespace boost { namespace fusion { namespace detail
         {}
 
 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-#if BOOST_WORKAROUND(BOOST_GCC, / 100 == 404)
-        template <typename Value_, typename = typename enable_if<is_same<Value_, Value> >::type>
-#else
-        typedef Value Value_;
-#endif
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        keyed_element(Value_&& value, Rest&& rest)
+        keyed_element(Value&& value, Rest&& rest)
             : Rest(std::move(rest))
             , value_(BOOST_FUSION_FWD_ELEM(Value, value))
         {}

include/boost/fusion/container/list/cons.hpp

@@ -70,10 +70,6 @@ namespace boost { namespace fusion
         cons(cons<Car2, Cdr2> const& rhs)
             : car(rhs.car), cdr(rhs.cdr) {}
 
-#if BOOST_WORKAROUND(BOOST_GCC, / 100 == 406) && !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)
-        // Workaround for `array used as initializer` compile error on gcc 4.6 w/ c++0x.
-        template <typename = void>
-#endif
         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         cons(cons const& rhs)
             : car(rhs.car), cdr(rhs.cdr) {}

include/boost/fusion/container/map/detail/map_impl.hpp

@@ -125,7 +125,11 @@ namespace boost { namespace fusion { namespace detail
         }
 
         BOOST_FUSION_GPU_ENABLED
-        mpl::identity<value_type> get_val(mpl::identity<key_type>) const;
+        value_type get_val(mpl::identity<key_type>);
+        BOOST_FUSION_GPU_ENABLED
+        pair_type get_val(mpl::int_<index>);
+        BOOST_FUSION_GPU_ENABLED
+        value_type get_val(mpl::identity<key_type>) const;
         BOOST_FUSION_GPU_ENABLED
         pair_type get_val(mpl::int_<index>) const;
 

include/boost/fusion/container/map/detail/value_at_key_impl.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2001-2013 Joel de Guzman
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -9,6 +8,10 @@
 #define BOOST_FUSION_MAP_DETAIL_VALUE_AT_KEY_IMPL_02042013_0821
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/fusion/support/detail/access.hpp>
+#include <boost/type_traits/is_const.hpp>
+#include <boost/mpl/at.hpp>
+#include <boost/mpl/identity.hpp>
 #include <boost/utility/declval.hpp>
 
 namespace boost { namespace fusion
@@ -26,9 +29,9 @@ namespace boost { namespace fusion
             template <typename Sequence, typename Key>
             struct apply
             {
-                typedef typename BOOST_FUSION_IDENTIFIED_TYPE((
-                    boost::declval<Sequence>().get_val(mpl::identity<Key>())
-                )) type;
+                typedef
+                    decltype(boost::declval<Sequence>().get_val(mpl::identity<Key>()))
+                type;
             };
         };
     }

include/boost/fusion/container/vector/detail/value_at_impl.hpp

@@ -1,5 +1,5 @@
 /*=============================================================================
-    Copyright (c) 2014,2018 Kohei Takahashi
+    Copyright (c) 2014 Kohei Takahashi
 
     Distributed under 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)
@@ -7,6 +7,7 @@
 #ifndef FUSION_VALUE_AT_IMPL_16122014_1641
 #define FUSION_VALUE_AT_IMPL_16122014_1641
 
+#include <boost/config.hpp>
 #include <boost/fusion/support/config.hpp>
 #include <boost/fusion/container/vector/detail/config.hpp>
 
@@ -22,7 +23,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 #include <boost/fusion/container/vector/vector_fwd.hpp>
 #include <boost/type_traits/declval.hpp>
-#include <boost/mpl/identity.hpp>
 
 namespace boost { namespace fusion
 {
@@ -35,7 +35,7 @@ namespace boost { namespace fusion
 
         template <std::size_t N, typename U>
         static inline BOOST_FUSION_GPU_ENABLED
-        mpl::identity<U> value_at_impl(store<N, U> const volatile*);
+        U value_at_impl(store<N, U> const volatile*);
     }
 
     namespace extension
@@ -49,9 +49,9 @@ namespace boost { namespace fusion
             template <typename Sequence, typename N>
             struct apply
             {
-                typedef typename BOOST_FUSION_IDENTIFIED_TYPE((
-                    vector_detail::value_at_impl<N::value>(boost::declval<Sequence*>())
-                )) type;
+                typedef
+                    decltype(vector_detail::value_at_impl<N::value>(boost::declval<Sequence*>()))
+                type;
             };
         };
     }

include/boost/fusion/support/config.hpp

@@ -1,6 +1,6 @@
 /*=============================================================================
     Copyright (c) 2014 Eric Niebler
-    Copyright (c) 2014,2015,2018 Kohei Takahashi
+    Copyright (c) 2014 Kohei Takahashi
 
     Distributed under 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)
@@ -96,24 +96,4 @@ namespace std
 #define BOOST_FUSION_CONSTEXPR_THIS BOOST_CONSTEXPR
 #endif
 
-
-// Workaround for compiler which doesn't compile decltype(expr)::type.
-// It expects decltype(expr) deduced as mpl::identity<T>.
-#if BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1913)) || BOOST_WORKAROUND(BOOST_GCC, < 40700)
-#   include <boost/mpl/identity.hpp>
-#   define BOOST_FUSION_IDENTIFIED_TYPE(parenthesized_expr) \
-        boost::mpl::identity<decltype parenthesized_expr>::type::type
-#else
-#   define BOOST_FUSION_IDENTIFIED_TYPE(parenthesized_expr) \
-        decltype parenthesized_expr ::type
-#endif
-
-
-// Workaround for GCC 4.6 that rejects defaulted function with noexcept.
-#if BOOST_WORKAROUND(BOOST_GCC, / 100 == 406)
-#   define BOOST_FUSION_NOEXCEPT_ON_DEFAULTED
-#else
-#   define BOOST_FUSION_NOEXCEPT_ON_DEFAULTED BOOST_NOEXCEPT
-#endif
-
 #endif

include/boost/fusion/support/detail/and.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2016 Lee Clagett
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -9,7 +8,6 @@
 #define FUSION_AND_07152016_1625
 
 #include <boost/config.hpp>
-#include <boost/config/workaround.hpp>
 #include <boost/type_traits/integral_constant.hpp>
 
 #if defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
@@ -17,8 +15,7 @@
 #endif
 
 namespace boost { namespace fusion { namespace detail {
-#if defined(BOOST_NO_CXX17_FOLD_EXPRESSIONS) \
- || BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1913))
+#if defined(BOOST_NO_CXX17_FOLD_EXPRESSIONS)
     template<typename ...Cond>
     struct and_impl : false_type {};
 

include/boost/fusion/support/pair.hpp

@@ -8,15 +8,16 @@
 #if !defined(FUSION_PAIR_07222005_1203)
 #define FUSION_PAIR_07222005_1203
 
-#include <boost/fusion/support/config.hpp>
 #include <iosfwd>
-
+#include <utility>
+#include <boost/fusion/support/config.hpp>
 #include <boost/fusion/support/detail/access.hpp>
 #include <boost/fusion/support/detail/as_fusion_element.hpp>
-#include <boost/config.hpp>
-#include <boost/utility/enable_if.hpp>
+#include <boost/fusion/support/detail/enabler.hpp>
+#include <boost/core/enable_if.hpp>
+#include <boost/type_traits/is_same.hpp>
 #include <boost/type_traits/is_convertible.hpp>
-#include <boost/type_traits/is_lvalue_reference.hpp>
+#include <boost/type_traits/remove_cv_ref.hpp>
 
 #if defined (BOOST_MSVC)
 #  pragma warning(push)
@@ -33,54 +34,46 @@ namespace boost { namespace fusion
         pair()
             : second() {}
 
-        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        pair(pair const& rhs)
-            : second(rhs.second) {}
-
-#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        pair(pair&& rhs)
-            : second(BOOST_FUSION_FWD_ELEM(Second, rhs.second)) {}
-#endif
-
         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         pair(typename detail::call_param<Second>::type val)
             : second(val) {}
 
 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
-        template <typename Second2>
         BOOST_FUSION_GPU_ENABLED
-        pair(Second2&& val
-          , typename boost::disable_if<is_lvalue_reference<Second2> >::type* /* dummy */ = 0
-          , typename boost::enable_if<is_convertible<Second2, Second> >::type* /*dummy*/ = 0
-        ) : second(BOOST_FUSION_FWD_ELEM(Second, val)) {}
+        pair(typename remove_cv_ref<Second>::type&& val)
+            : second(BOOST_FUSION_FWD_ELEM(Second, val)) {}
 #endif
 
         template <typename Second2>
         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        pair(pair<First, Second2> const& rhs)
+        pair(pair<First, Second2> const& rhs,
+             typename disable_if<is_same<Second, Second2>, detail::enabler_>::type = detail::enabler,
+             typename enable_if<is_convertible<Second2, Second>, detail::enabler_>::type = detail::enabler)
             : second(rhs.second) {}
 
         template <typename Second2>
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        pair& operator=(pair<First, Second2> const& rhs)
-        {
-            second = rhs.second;
-            return *this;
-        }
-
-        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        pair& operator=(pair const& rhs)
+        typename disable_if<is_same<Second, Second2>, pair&>::type
+        operator=(pair<First, Second2> const& rhs)
         {
             second = rhs.second;
             return *this;
         }
 
 #if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+        template <typename Second2>
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        pair(pair<First, Second2>&& rhs,
+             typename disable_if<is_same<Second, Second2>, detail::enabler_>::type = detail::enabler,
+             typename enable_if<is_convertible<Second2, Second>, detail::enabler_>::type = detail::enabler)
+            : second(std::move(rhs.second)) {}
+
+        template <typename Second2>
         BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        pair& operator=(pair&& rhs)
+        typename disable_if<is_same<Second, Second2>, pair&>::type
+        operator=(pair<First, Second2>&& rhs)
         {
-            second = BOOST_FUSION_FWD_ELEM(Second, rhs.second);
+            second = std::move(rhs.second);
             return *this;
         }
 #endif

include/boost/fusion/support/unused.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -11,6 +10,7 @@
 #include <boost/fusion/support/config.hpp>
 #include <iosfwd>
 
+#include <boost/config.hpp>
 #if defined(BOOST_MSVC)
 # pragma warning(push)
 # pragma warning(disable: 4522) // multiple assignment operators specified warning
@@ -23,16 +23,9 @@ namespace boost { namespace fusion
     struct unused_type
     {
         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        BOOST_DEFAULTED_FUNCTION(
-        unused_type() BOOST_FUSION_NOEXCEPT_ON_DEFAULTED,
+        unused_type() BOOST_NOEXCEPT
         {
-        })
-
-        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-        BOOST_DEFAULTED_FUNCTION(
-        unused_type(unused_type const&) BOOST_FUSION_NOEXCEPT_ON_DEFAULTED,
-        {
-        })
+        }
 
         template <typename T>
         BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
@@ -40,12 +33,35 @@ namespace boost { namespace fusion
         {
         }
 
+        template <typename T>
+        BOOST_FUSION_CONSTEXPR_THIS BOOST_FUSION_GPU_ENABLED
+        unused_type const&
+        operator=(T const&) const BOOST_NOEXCEPT
+        {
+            return *this;
+        }
+
+        template <typename T>
+        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        unused_type&
+        operator=(T const&) BOOST_NOEXCEPT
+        {
+            return *this;
+        }
+
         BOOST_FUSION_CONSTEXPR_THIS BOOST_FUSION_GPU_ENABLED
         unused_type const&
         operator=(unused_type const&) const BOOST_NOEXCEPT
         {
             return *this;
         }
+
+        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+        unused_type&
+        operator=(unused_type const&) BOOST_NOEXCEPT
+        {
+            return *this;
+        }
     };
 
     BOOST_CONSTEXPR_OR_CONST unused_type unused = unused_type();

include/boost/fusion/view/transform_view/detail/apply_transform_result.hpp

@@ -0,0 +1,38 @@
+/*=============================================================================
+    Copyright (c) 2001-2011 Joel de Guzman
+    Copyright (c) 2007 Dan Marsden
+
+    Distributed under 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)
+==============================================================================*/
+#if !defined(BOOST_FUSION_APPLY_TRANSFORM_RESULT_02092006_1936)
+#define BOOST_FUSION_APPLY_TRANSFORM_RESULT_02092006_1936
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/utility/result_of.hpp>
+
+namespace boost { namespace fusion
+{
+    struct void_;
+    
+    namespace detail
+    {
+        template <typename F>
+        struct apply_transform_result
+        {
+            template <typename T0, typename T1 = void_>
+            struct apply
+                : boost::result_of<F(T0, T1)>
+            {};
+
+            template <typename T0>
+            struct apply<T0, void_>
+                : boost::result_of<F(T0)>
+            {};
+        };
+    }
+}}
+
+#endif
+
+

include/boost/fusion/view/transform_view/detail/at_impl.hpp

@@ -1,7 +1,6 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
     Copyright (c) 2005-2006 Dan Marsden
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -10,8 +9,9 @@
 #define BOOST_FUSION_AT_IMPL_20061029_1946
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/mpl/apply.hpp>
+#include <boost/fusion/view/transform_view/detail/apply_transform_result.hpp>
 #include <boost/fusion/sequence/intrinsic/at.hpp>
-#include <boost/utility/result_of.hpp>
 
 namespace boost { namespace fusion {
     struct transform_view_tag;
@@ -29,8 +29,9 @@ namespace boost { namespace fusion {
             struct apply
             {
                 typedef typename Seq::transform_type F;
-                typedef typename result_of::at<typename Seq::sequence_type, N>::type value_type;
-                typedef typename boost::result_of<F(value_type)>::type type;
+                typedef detail::apply_transform_result<F> transform_type;
+                typedef typename boost::fusion::result_of::at<typename Seq::sequence_type, N>::type value_type;
+                typedef typename mpl::apply<transform_type, value_type>::type type;
 
                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
                 static type call(Seq& seq)
@@ -47,9 +48,10 @@ namespace boost { namespace fusion {
             struct apply
             {
                 typedef typename Seq::transform_type F;
-                typedef typename result_of::at<typename Seq::sequence1_type, N>::type value1_type;
-                typedef typename result_of::at<typename Seq::sequence2_type, N>::type value2_type;
-                typedef typename boost::result_of<F(value1_type, value2_type)>::type type;
+                typedef detail::apply_transform_result<F> transform_type;
+                typedef typename boost::fusion::result_of::at<typename Seq::sequence1_type, N>::type value1_type;
+                typedef typename boost::fusion::result_of::at<typename Seq::sequence2_type, N>::type value2_type;
+                typedef typename mpl::apply<transform_type, value1_type, value2_type>::type type;
 
                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
                 static type call(Seq& seq)

include/boost/fusion/view/transform_view/detail/deref_impl.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -9,8 +8,10 @@
 #define FUSION_DEREF_IMPL_07162005_1026
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/mpl/apply.hpp>
 #include <boost/fusion/iterator/deref.hpp>
-#include <boost/utility/result_of.hpp>
+#include <boost/fusion/iterator/value_of.hpp>
+#include <boost/fusion/view/transform_view/detail/apply_transform_result.hpp>
 
 namespace boost { namespace fusion
 {
@@ -33,8 +34,8 @@ namespace boost { namespace fusion
                     result_of::deref<typename Iterator::first_type>::type
                 value_type;
 
-                typedef typename Iterator::transform_type F;
-                typedef typename boost::result_of<F(value_type)>::type type;
+                typedef detail::apply_transform_result<typename Iterator::transform_type> transform_type;
+                typedef typename mpl::apply<transform_type, value_type>::type type;
 
                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
                 static type
@@ -59,8 +60,8 @@ namespace boost { namespace fusion
                     result_of::deref<typename Iterator::first2_type>::type
                 value2_type;
 
-                typedef typename Iterator::transform_type F;
-                typedef typename boost::result_of<F(value1_type, value2_type)>::type type;
+                typedef detail::apply_transform_result<typename Iterator::transform_type> transform_type;
+                typedef typename mpl::apply<transform_type, value1_type, value2_type>::type type;
 
                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
                 static type
@@ -69,7 +70,7 @@ namespace boost { namespace fusion
                     return i.f(*i.first1, *i.first2);
                 }
             };
-        };
+        };    
     }
 }}
 

include/boost/fusion/view/transform_view/detail/value_at_impl.hpp

@@ -1,7 +1,6 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
     Copyright (c) 2005-2006 Dan Marsden
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -10,8 +9,9 @@
 #define BOOST_FUSION_VALUE_AT_IMPL_20061101_0745
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/mpl/apply.hpp>
+#include <boost/fusion/view/transform_view/detail/apply_transform_result.hpp>
 #include <boost/fusion/sequence/intrinsic/value_at.hpp>
-#include <boost/utility/result_of.hpp>
 
 namespace boost { namespace fusion {
     struct transform_view_tag;
@@ -29,8 +29,9 @@ namespace boost { namespace fusion {
             struct apply
             {
                 typedef typename Seq::transform_type F;
-                typedef typename result_of::value_at<typename Seq::sequence_type, N>::type value_type;
-                typedef typename boost::result_of<F(value_type)>::type type;
+                typedef detail::apply_transform_result<F> transform_type;
+                typedef typename boost::fusion::result_of::value_at<typename Seq::sequence_type, N>::type value_type;
+                typedef typename mpl::apply<transform_type, value_type>::type type;
             };
         };
 
@@ -41,9 +42,10 @@ namespace boost { namespace fusion {
             struct apply
             {
                 typedef typename Seq::transform_type F;
-                typedef typename result_of::value_at<typename Seq::sequence1_type, N>::type value1_type;
-                typedef typename result_of::value_at<typename Seq::sequence2_type, N>::type value2_type;
-                typedef typename boost::result_of<F(value1_type, value2_type)>::type type;
+                typedef detail::apply_transform_result<F> transform_type;
+                typedef typename boost::fusion::result_of::value_at<typename Seq::sequence1_type, N>::type value1_type;
+                typedef typename boost::fusion::result_of::value_at<typename Seq::sequence2_type, N>::type value2_type;
+                typedef typename mpl::apply<transform_type, value1_type, value2_type>::type type;
             };
         };
     }

include/boost/fusion/view/transform_view/detail/value_of_impl.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -9,8 +8,9 @@
 #define FUSION_VALUE_OF_IMPL_07162005_1030
 
 #include <boost/fusion/support/config.hpp>
+#include <boost/mpl/apply.hpp>
 #include <boost/fusion/iterator/value_of.hpp>
-#include <boost/utility/result_of.hpp>
+#include <boost/fusion/view/transform_view/detail/apply_transform_result.hpp>
 
 namespace boost { namespace fusion
 {
@@ -33,8 +33,8 @@ namespace boost { namespace fusion
                     result_of::value_of<typename Iterator::first_type>::type
                 value_type;
 
-                typedef typename Iterator::transform_type F;
-                typedef typename boost::result_of<F(value_type)>::type type;
+                typedef detail::apply_transform_result<typename Iterator::transform_type> transform_type;
+                typedef typename mpl::apply<transform_type, value_type>::type type;
             };
         };
 
@@ -52,8 +52,8 @@ namespace boost { namespace fusion
                     result_of::value_of<typename Iterator::first2_type>::type
                 value2_type;
 
-                typedef typename Iterator::transform_type F;
-                typedef typename boost::result_of<F(value1_type, value2_type)>::type type;
+                typedef detail::apply_transform_result<typename Iterator::transform_type> transform_type;
+                typedef typename mpl::apply<transform_type, value1_type, value2_type>::type type;
             };
         };
     }

meta/explicit-failures-markup.xml

@@ -9,8 +9,8 @@
             <toolset name="msvc-11.0"/>
             <toolset name="msvc-12.0"/>
             <toolset name="qcc-4.4.2_x86"/>
-            <toolset name="gcc-4.4~c++0x*"/>
-            <toolset name="gcc-4.4~gnu0x*"/>
+            <toolset name="gcc-gnu-4.4~c++0x*"/>
+            <toolset name="gcc-gnu-4.4~gnu0x*"/>
             <note author="Kohei Takahashi">
                 The compiler doesn't generate defaulted move ctor/assgin thus
                 perform copy construction/assginment. Even though such case,

test/Jamfile

@@ -66,7 +66,6 @@ project
     [ run algorithm/zip2.cpp ]
     [ run algorithm/zip_ignore.cpp ]
     [ run algorithm/flatten.cpp ]
-    [ compile algorithm/ticket-5490.cpp ]
 
     [ run sequence/as_deque.cpp ]
     [ run sequence/as_list.cpp ]
@@ -238,7 +237,6 @@ project
     [ run sequence/ref_vector.cpp ]
     [ run sequence/flatten_view.cpp ]
     [ compile sequence/github-159.cpp ]
-    [ run sequence/github-176.cpp ]
 
     [ compile sequence/size.cpp ]
 
@@ -257,6 +255,7 @@ project
     [ run sequence/swap.cpp ]
 
     [ compile support/is_sequence.cpp ]
+    [ compile support/pair_conversion.cpp ]
     [ compile support/pair_deque.cpp ]
     [ compile support/pair_list.cpp ]
     [ compile support/pair_map.cpp ]
@@ -268,7 +267,8 @@ project
     [ compile support/and.cpp
         : [ requires cxx11_variadic_templates ] ]
     [ compile support/tag_of.cpp ]
-    [ compile support/unused.cpp ]
+    [ compile support/pair_trivially_copyable.cpp
+        : [ requires cxx11_hdr_type_traits ] ]
 
 #   [ compile-fail xxx.cpp  ]
 

test/algorithm/for_each.cpp

@@ -1,15 +1,13 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
 ==============================================================================*/
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>
 #include <boost/fusion/container/vector/vector.hpp>
 #include <boost/fusion/adapted/mpl.hpp>
 #include <boost/fusion/sequence/io/out.hpp>
-#include <boost/fusion/sequence/comparison/equal_to.hpp>
 #include <boost/fusion/algorithm/iteration/for_each.hpp>
 #include <boost/mpl/vector_c.hpp>
 
@@ -31,15 +29,6 @@ struct increment
     }
 };
 
-struct mutable_increment : increment
-{
-    template <typename T>
-    void operator()(T& v)
-    {
-        return increment::operator()(v);
-    }
-};
-
 int
 main()
 {
@@ -55,20 +44,9 @@ main()
     }
 
     {
-        char const ruby[] = "Ruby";
         typedef vector<int, char, double, char const*> vector_type;
-        vector_type v(1, 'x', 3.3, ruby);
+        vector_type v(1, 'x', 3.3, "Ruby");
         for_each(v, increment());
-        BOOST_TEST_EQ(v, vector_type(2, 'y', 4.3, ruby + 1));
-        std::cout << v << std::endl;
-    }
-
-    {
-        char const ruby[] = "Ruby";
-        typedef vector<int, char, double, char const*> vector_type;
-        vector_type v(1, 'x', 3.3, ruby);
-        for_each(v, mutable_increment());
-        BOOST_TEST_EQ(v, vector_type(2, 'y', 4.3, ruby + 1));
         std::cout << v << std::endl;
     }
 

test/algorithm/segmented_for_each.cpp

@@ -1,17 +1,14 @@
 /*=============================================================================
     Copyright (c) 2001-2011 Joel de Guzman
     Copyright (c) 2011 Eric Niebler
-    Copyright (c) 2018 Kohei Takahashi
 
     Distributed under 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)
 ==============================================================================*/
-#include <boost/core/lightweight_test.hpp>
+#include <boost/detail/lightweight_test.hpp>
 #include <boost/fusion/container/vector/vector.hpp>
-#include <boost/fusion/container/generation/make_vector.hpp>
 #include <boost/fusion/algorithm/iteration/for_each.hpp>
-#include <boost/fusion/sequence/comparison/equal_to.hpp>
-#include <boost/fusion/sequence/io/out.hpp>
+#include <boost/fusion/container/generation/make_vector.hpp>
 #include "../sequence/tree.hpp"
 
 struct print
@@ -23,31 +20,6 @@ struct print
     }
 };
 
-struct increment
-{
-    template <typename T>
-    void operator()(T& v) const
-    {
-        ++v;
-    }
-};
-
-struct mutable_increment : increment
-{
-    template <typename T>
-    void operator()(T& v)
-    {
-        return increment::operator()(v);
-    }
-};
-
-template <typename F, typename Tree>
-void test(Tree tree, Tree const& expected)
-{
-    boost::fusion::for_each(tree, F());
-    BOOST_TEST_EQ(tree, expected);
-}
-
 int
 main()
 {
@@ -70,69 +42,6 @@ main()
             )
           , print()
         );
-        std::cout << std::endl;
-    }
-
-    {
-        test<increment>(
-            make_tree(
-                make_vector(double(0),'B')
-              , make_tree(
-                    make_vector(1,2,long(3))
-                  , make_tree(make_vector('a','b','c'))
-                  , make_tree(make_vector(short('d'),'e','f'))
-                )
-              , make_tree(
-                    make_vector(4,5,6)
-                  , make_tree(make_vector(float(1),'h','i'))
-                  , make_tree(make_vector('j','k','l'))
-                )
-            )
-          , make_tree(
-                make_vector(double(1),'C')
-              , make_tree(
-                    make_vector(2,3,long(4))
-                  , make_tree(make_vector('b','c','d'))
-                  , make_tree(make_vector(short('e'),'f','g'))
-                )
-              , make_tree(
-                    make_vector(5,6,7)
-                  , make_tree(make_vector(float(2),'i','j'))
-                  , make_tree(make_vector('k','l','m'))
-                )
-            )
-        );
-    }
-
-    {
-        test<mutable_increment>(
-            make_tree(
-                make_vector(double(0),'B')
-              , make_tree(
-                    make_vector(1,2,long(3))
-                  , make_tree(make_vector('a','b','c'))
-                  , make_tree(make_vector(short('d'),'e','f'))
-                )
-              , make_tree(
-                    make_vector(4,5,6)
-                  , make_tree(make_vector(float(1),'h','i'))
-                  , make_tree(make_vector('j','k','l'))
-                )
-            )
-          , make_tree(
-                make_vector(double(1),'C')
-              , make_tree(
-                    make_vector(2,3,long(4))
-                  , make_tree(make_vector('b','c','d'))
-                  , make_tree(make_vector(short('e'),'f','g'))
-                )
-              , make_tree(
-                    make_vector(5,6,7)
-                  , make_tree(make_vector(float(2),'i','j'))
-                  , make_tree(make_vector('k','l','m'))
-                )
-            )
-        );
     }
 
     return boost::report_errors();

test/algorithm/ticket-5490.cpp

@@ -1,41 +0,0 @@
-/*=============================================================================
-    Copyright (c) 2018 Kohei Takahashi
-
-    Distributed under 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)
-==============================================================================*/
-#include <boost/fusion/include/vector.hpp>
-#include <boost/fusion/include/transform.hpp>
-#include <boost/mpl/quote.hpp>
-#include <boost/mpl/placeholders.hpp>
-#include <boost/core/ignore_unused.hpp>
-
-using namespace boost::fusion;
-
-template <typename>
-struct predicate {};
-
-struct unique {};
-
-template <typename>
-struct meta_func
-{
-    typedef unique result_type;
-
-    template <typename T>
-    unique operator()(const T&) const;
-};
-
-int main()
-{
-    vector<int> v;
-
-    typedef predicate<boost::mpl::_1> lambda_t;
-    typedef boost::mpl::quote1<predicate> quote_t;
-
-    vector<unique> l = transform(v, meta_func<lambda_t>());
-
-    vector<unique> q = transform(v, meta_func<quote_t>());
-
-    boost::ignore_unused(l, q);
-}

test/sequence/define_struct_inline_move.cpp

@@ -47,8 +47,8 @@ int main()
         BOOST_TEST(y.w.value == 42);
     }
 
-    // Older MSVCs and gcc 4.4 don't generate move ctor by default.
-#if !(defined(CI_SKIP_KNOWN_FAILURE) && (BOOST_WORKAROUND(BOOST_MSVC, < 1900) || BOOST_WORKAROUND(BOOST_GCC, / 100 == 404)))
+    // Older MSVCs don't generate move ctor by default.
+#if !(defined(CI_SKIP_KNOWN_FAILURE) && BOOST_WORKAROUND(BOOST_MSVC, < 1900))
     {
         ns::value x;
         ns::value y(std::move(x)); // move
@@ -66,7 +66,7 @@ int main()
         BOOST_TEST(x.w.value == 0);
         BOOST_TEST(y.w.value == 0);
     }
-#endif // !(ci && (msvc < 14.0 || gcc 4.4.x))
+#endif // !(ci && msvc < 14.0)
 
     return boost::report_errors();
 }

test/sequence/define_tpl_struct_inline_move.cpp

@@ -47,8 +47,8 @@ int main()
         BOOST_TEST(y.w.value == 42);
     }
 
-    // Older MSVCs and gcc 4.4 don't generate move ctor by default.
-#if !(defined(CI_SKIP_KNOWN_FAILURE) && (BOOST_WORKAROUND(BOOST_MSVC, < 1900) || BOOST_WORKAROUND(BOOST_GCC, / 100 == 404)))
+    // Older MSVCs don't generate move ctor by default.
+#if !(defined(CI_SKIP_KNOWN_FAILURE) && BOOST_WORKAROUND(BOOST_MSVC, < 1900))
     {
         ns::value<wrapper> x;
         ns::value<wrapper> y(std::move(x)); // move
@@ -66,7 +66,7 @@ int main()
         BOOST_TEST(x.w.value == 0);
         BOOST_TEST(y.w.value == 0);
     }
-#endif // !(ci && (msvc < 14.0 || gcc 4.4.x))
+#endif // !(ci && msvc < 14.0)
 
     return boost::report_errors();
 }

test/sequence/github-176.cpp

@@ -1,89 +0,0 @@
-/*=============================================================================
-    Copyright (c) 2018 Kohei Takahashi
-
-    Distributed under 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)
-==============================================================================*/
-
-#include <boost/fusion/sequence/intrinsic/at.hpp>
-#include <boost/fusion/sequence/intrinsic/at_key.hpp>
-#include <boost/fusion/container/vector.hpp>
-#include <boost/fusion/container/list.hpp>
-#include <boost/fusion/container/deque.hpp>
-#include <boost/fusion/container/map.hpp>
-#include <boost/fusion/container/set.hpp>
-#include <boost/fusion/tuple/tuple.hpp>
-#include <boost/core/lightweight_test.hpp>
-
-template <typename Sequence>
-void test_at()
-{
-    Sequence seq;
-
-    // zero initialized
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[0] == 0);
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[1] == 0);
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[2] == 0);
-
-    int (&arr)[3] = boost::fusion::deref(boost::fusion::begin(seq));
-
-    arr[0] = 2;
-    arr[1] = 4;
-    arr[2] = 6;
-
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[0] == 2);
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[1] == 4);
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[2] == 6);
-
-    boost::fusion::at_c<0>(seq)[1] = 42;
-
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[0] == 2);
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[1] == 42);
-    BOOST_TEST(boost::fusion::at_c<0>(seq)[2] == 6);
-}
-
-template <typename T> inline T& value(T& v) { return v; }
-template <typename K, typename T> inline T& value(boost::fusion::pair<K, T>& v) { return v.second; }
-
-template <typename Sequence>
-void test_at_key()
-{
-    Sequence seq;
-
-    // zero initialized
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[0] == 0);
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[1] == 0);
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[2] == 0);
-
-    int (&arr)[3] = value(boost::fusion::deref(boost::fusion::begin(seq)));
-
-    arr[0] = 2;
-    arr[1] = 4;
-    arr[2] = 6;
-
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[0] == 2);
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[1] == 4);
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[2] == 6);
-
-    boost::fusion::at_key<int[3]>(seq)[1] = 42;
-
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[0] == 2);
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[1] == 42);
-    BOOST_TEST(boost::fusion::at_key<int[3]>(seq)[2] == 6);
-}
-
-int main()
-{
-    using namespace boost::fusion;
-
-    test_at<vector<int[3]> >();
-    test_at<deque<int[3]> >();
-    test_at<list<int[3]> >();
-    test_at<tuple<int[3]> >();
-
-#if !BOOST_WORKAROUND(BOOST_GCC, / 100 == 406) || defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)
-    // FIXME: gcc 4.6 w/ c++0x doesn't like set with array...
-    test_at_key<set<int[3]> >();
-#endif
-    test_at_key<map<pair<int[3], int[3]> > >();
-}

test/sequence/hash.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (c) 2014 Christoph Weiss
-    Copyright (c) 2017 Kohei Takahashi
 
     Distributed under 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)
@@ -12,24 +11,24 @@
 #include <boost/fusion/sequence/hash.hpp>
 #include <boost/functional/hash.hpp>
 
-void hash_test()
+void
+hash_test()
 {
-    namespace fusion = boost::fusion;
-    using namespace fusion;
+    using namespace boost::fusion;
 
     const FUSION_SEQUENCE<int, char, bool, std::string> v0(42, 'x', false, "Aurea prima");
     const FUSION_SEQUENCE<int, char, bool, std::string> v1(42, 'x', false, "Aurea prima");
-    BOOST_TEST(fusion::hash_value(v0) == fusion::hash_value(v1));
-
+    BOOST_TEST(hash_value(v0) == hash_value(v1));
+    
     const FUSION_SEQUENCE<int, char, bool, std::string> w(41, 'x', false, "Aurea prima");
-    BOOST_TEST(fusion::hash_value(w) != fusion::hash_value(v0));
-
+    BOOST_TEST(hash_value(w) != hash_value(v0));
+    
     const FUSION_SEQUENCE<int, char, bool, std::string> x(42, 'y', false, "Aurea prima");
-    BOOST_TEST(fusion::hash_value(x) != fusion::hash_value(v0));
-
+    BOOST_TEST(hash_value(x) != hash_value(v0));
+    
     const FUSION_SEQUENCE<int, char, bool, std::string> y(42, 'x', true, "Aurea prima");
-    BOOST_TEST(fusion::hash_value(y) != fusion::hash_value(v0));
-
+    BOOST_TEST(hash_value(y) != hash_value(v0));
+    
     const FUSION_SEQUENCE<int, char, bool, std::string> z(42, 'x', false, "quae vindice nullo");
-    BOOST_TEST(fusion::hash_value(z) != fusion::hash_value(v0));
+    BOOST_TEST(hash_value(z) != hash_value(v0));
 }

test/sequence/traits.hpp

@@ -1,6 +1,5 @@
 /*=============================================================================
     Copyright (C) 2016 Lee Clagett
-    Copyright (C) 2018 Kohei Takahashi
 
     Distributed under 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)
@@ -39,7 +38,9 @@ bool is_convertible(bool has_conversion)
 }
 
 // is_constructible has a few requirements
-#ifdef BOOST_TT_IS_CONSTRUCTIBLE_CONFORMING
+#if !defined(BOOST_NO_CXX11_DECLTYPE) &&   \
+    !defined(BOOST_NO_CXX11_TEMPLATES) &&  \
+    !defined(BOOST_NO_SFINAE_EXPR)
 
 #define FUSION_TEST_HAS_CONSTRUCTIBLE
 
@@ -87,9 +88,7 @@ void test_constructible()
     BOOST_TEST((
         is_constructible<FUSION_SEQUENCE<convertible>, convertible>(true)
     ));
-
-    // boost::is_constructible always fail to test ctor which takes 2 or more arguments on GCC 4.7.
-#if !BOOST_WORKAROUND(BOOST_GCC, < 40700)
+        
     BOOST_TEST((
         is_constructible<FUSION_SEQUENCE<int, int>, int, int>(true)
     ));
@@ -132,7 +131,6 @@ void test_constructible()
             FUSION_SEQUENCE<convertible, convertible>, convertible, convertible
         >(true)
     ));
-#endif // !(gcc < 4.7)
 }
 
 #endif // is_constructible is available

test/sequence/tuple_traits.cpp

@@ -65,13 +65,10 @@ main()
     BOOST_TEST((is_constructible<tuple<int>, int, int>(false)));
 
     BOOST_TEST((is_constructible< tuple<int, int> >(true)));
-    // boost::is_constructible always fail to test ctor which takes 2 or more arguments on GCC 4.7.
-#if !BOOST_WORKAROUND(BOOST_GCC, < 40700)
     BOOST_TEST((is_constructible<tuple<int, int>, int, int>(true)));
     BOOST_TEST((
         is_constructible<tuple<convertible, convertible>, int, int>(true)
     ));
-#endif // !(gcc < 4.7)
     BOOST_TEST((is_constructible<tuple<int, not_convertible>, int, int>(false)));
     BOOST_TEST((is_constructible<tuple<not_convertible, int>, int, int>(false)));
     BOOST_TEST((

test/support/pair_conversion.cpp

@@ -0,0 +1,42 @@
+/*=============================================================================
+    Copyright (c) 2018 Kohei Takahashi
+
+    Distributed under 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)
+==============================================================================*/
+
+#include <utility>
+#include <boost/config.hpp>
+#include <boost/fusion/support/pair.hpp>
+
+using namespace boost::fusion;
+
+struct eat_int
+{
+    eat_int(int);
+};
+
+struct eat_pair
+{
+    template <typename K, typename V>
+    eat_pair(pair<K, V>);
+};
+
+int main()
+{
+    pair<void, int> p;
+
+    pair<void, eat_int> ci(p);
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    pair<void, eat_int> mi(std::move(p));
+#endif
+
+    // eat_pair can't be converted from int, but can be pair.
+    // So pair(eat_pair) should be called rather than pair(pair<void, eat_pair>).
+    pair<void, eat_pair> cp(p);
+
+#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
+    pair<void, eat_pair> mp(std::move(p));
+#endif
+}

test/support/pair_nest.cpp

@@ -1,5 +1,5 @@
 /*=============================================================================
-    Copyright (c) 2015 Kohei Takahashi
+    Copyright (c) 2015,2018 Kohei Takahashi
 
     Distributed under 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)
@@ -10,15 +10,20 @@
 using namespace boost::fusion;
 
 template <typename C>
-void copy()
+void copy(C value)
 {
-    pair<int, C> src;
+    pair<int, C> src(value);
     pair<int, C> dest = src;
     boost::ignore_unused(dest);
 }
 
 int main()
 {
-    copy<pair<void, float> >();
+    copy<pair<void, float> >(42.195f);
+    copy<pair<int, float> >(42.195f);
+
+    float f;
+    pair<void, float&> r(f);
+    copy<pair<void, float&> >(r);
 }
 

test/support/pair_trivially_copyable.cpp

@@ -0,0 +1,50 @@
+/*=============================================================================
+    Copyright (c) 2018 Kohei Takahashi
+
+    Distributed under 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)
+==============================================================================*/
+
+#include <type_traits>
+#include <boost/fusion/support/pair.hpp>
+#include <boost/mpl/assert.hpp>
+
+using namespace boost::fusion;
+
+struct non_trivially_copyable
+{
+    non_trivially_copyable(const non_trivially_copyable&);
+    non_trivially_copyable operator=(const non_trivially_copyable&);
+};
+
+struct pod { };
+
+BOOST_MPL_ASSERT_NOT((std::is_trivially_copyable<void>));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<int>));
+BOOST_MPL_ASSERT_NOT((std::is_trivially_copyable<non_trivially_copyable>));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pod>));
+BOOST_MPL_ASSERT_NOT((std::is_trivially_copyable<int&>));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<void*>));
+
+
+
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<void, int> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, int> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<non_trivially_copyable, int> >));
+BOOST_MPL_ASSERT_NOT((std::is_trivially_copyable<pair<int, non_trivially_copyable> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<pod, int> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, pod> >));
+
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<void, int&> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, int&> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<non_trivially_copyable, int&> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, non_trivially_copyable&> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, pod&> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, pod&> >));
+
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<void, int*> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, int*> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<non_trivially_copyable, int*> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, non_trivially_copyable*> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, pod*> >));
+BOOST_MPL_ASSERT((std::is_trivially_copyable<pair<int, pod*> >));

test/support/unused.cpp

@@ -1,95 +0,0 @@
-/*=============================================================================
-    Copyright (c) 2018 Kohei Takahashi
-
-    Distributed under 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)
-==============================================================================*/
-
-#include <boost/config.hpp>
-#include <boost/fusion/support/unused.hpp>
-#include <boost/type_traits/detail/yes_no_type.hpp>
-#include <boost/static_assert.hpp>
-#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
-#include <utility>
-#endif
-
-struct T { };
-
-void unused_construction()
-{
-    boost::fusion::unused_type dephault;
-
-    boost::fusion::unused_type BOOST_ATTRIBUTE_UNUSED parenthesis = boost::fusion::unused_type();
-#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
-    boost::fusion::unused_type BOOST_ATTRIBUTE_UNUSED brace{};
-    boost::fusion::unused_type BOOST_ATTRIBUTE_UNUSED list_copy = {};
-#endif
-
-    boost::fusion::unused_type copy_copy BOOST_ATTRIBUTE_UNUSED = dephault;
-    boost::fusion::unused_type copy_direct BOOST_ATTRIBUTE_UNUSED (dephault);
-#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
-    boost::fusion::unused_type copy_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {dephault};
-    boost::fusion::unused_type copy_direct_brace BOOST_ATTRIBUTE_UNUSED {dephault};
-#endif
-
-#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
-    boost::fusion::unused_type move_copy BOOST_ATTRIBUTE_UNUSED = std::move(dephault);
-    boost::fusion::unused_type move_direct BOOST_ATTRIBUTE_UNUSED (std::move(dephault));
-#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
-    boost::fusion::unused_type move_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {std::move(dephault)};
-    boost::fusion::unused_type move_direct_brace BOOST_ATTRIBUTE_UNUSED {std::move(dephault)};
-#endif
-#endif
-
-
-    T value;
-
-    boost::fusion::unused_type T_copy_copy BOOST_ATTRIBUTE_UNUSED = value;
-    boost::fusion::unused_type T_copy_direct BOOST_ATTRIBUTE_UNUSED (value);
-#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
-    boost::fusion::unused_type T_copy_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {value};
-    boost::fusion::unused_type T_copy_direct_brace BOOST_ATTRIBUTE_UNUSED {value};
-#endif
-
-#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
-    boost::fusion::unused_type T_move_copy BOOST_ATTRIBUTE_UNUSED = std::move(value);
-    boost::fusion::unused_type T_move_direct BOOST_ATTRIBUTE_UNUSED (std::move(value));
-#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
-    boost::fusion::unused_type T_move_copy_brace_direct BOOST_ATTRIBUTE_UNUSED = {std::move(value)};
-    boost::fusion::unused_type T_move_direct_brace BOOST_ATTRIBUTE_UNUSED {std::move(value)};
-#endif
-#endif
-}
-
-void unused_assignment()
-{
-    boost::fusion::unused_type val1, val2;
-
-    val1 = val2;
-#ifndef BOOST_NO_CXX11_UNIFIED_INITIALIZATION_SYNTAX
-    val1 = {};
-#endif
-#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
-    val1 = std::move(val2);
-#endif
-
-
-    T value;
-
-    val1 = value;
-#ifndef BOOST_NO_CXX11_RVALUE_REFERENCES
-    val1 = std::move(value);
-#endif
-}
-
-boost::type_traits::yes_type test_unused(boost::fusion::detail::unused_only const&);
-boost::type_traits::no_type  test_unused(...);
-
-void only_unused()
-{
-    BOOST_STATIC_ASSERT((sizeof(test_unused(boost::fusion::unused)) == sizeof(boost::type_traits::yes_type)));
-    BOOST_STATIC_ASSERT((sizeof(test_unused(0)) == sizeof(boost::type_traits::no_type)));
-
-    boost::fusion::unused_type my_unused;
-    BOOST_STATIC_ASSERT((sizeof(test_unused(my_unused)) == sizeof(boost::type_traits::yes_type)));
-}