Fix Clang 13 -Wdeprecated-copy warnings

Clang 13 have new warning under the same group

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

@@ -14,6 +14,10 @@
 
 namespace boost { namespace fusion { namespace detail
 {
+#ifdef _MSC_VER
+#  pragma warning(push)
+#  pragma warning(disable: 4512) // assignment operator could not be generated.
+#endif
     template <typename Fun>
     struct segmented_fold_fun
     {
@@ -37,6 +41,9 @@ namespace boost { namespace fusion { namespace detail
             }
         };
     };
+#ifdef _MSC_VER
+#  pragma warning(pop)
+#endif
 
     // The default implementation of this lives in detail/fold.hpp
     template <typename Sequence, typename State, typename Fun, bool IsSequence, bool IsSegmented>

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

@@ -13,6 +13,11 @@
 #include <boost/fusion/algorithm/iteration/for_each_fwd.hpp>
 #include <boost/fusion/support/segmented_fold_until.hpp>
 
+#ifdef _MSC_VER
+#  pragma warning(push)
+#  pragma warning(disable: 4512) // assignment operator could not be generated.
+#endif
+
 namespace boost { namespace fusion { namespace detail
 {
     template <typename Fun>
@@ -49,4 +54,8 @@ namespace boost { namespace fusion { namespace detail
     }
 }}}
 
+#ifdef _MSC_VER
+#  pragma warning(pop)
+#endif
+
 #endif

include/boost/fusion/algorithm/transformation/pop_back.hpp

@@ -18,6 +18,11 @@
 #include <boost/mpl/int.hpp>
 #include <boost/mpl/if.hpp>
 
+#ifdef _MSC_VER
+#  pragma warning(push)
+#  pragma warning(disable: 4512) // assignment operator could not be generated.
+#endif
+
 namespace boost { namespace fusion
 {
     template <typename Iterator_, bool IsLast>
@@ -168,5 +173,9 @@ namespace boost { namespace fusion
     }
 }}
 
+#ifdef _MSC_VER
+#  pragma warning(pop)
+#endif
+
 #endif