From 9f03cc44d8f7d228d4fe4dcdcedc0435c6413e98 Mon Sep 17 00:00:00 2001
From: "code@jendruk.com" <code@jendruk.com>
Date: Wed, 8 May 2019 09:58:37 +0200
Subject: [PATCH] Add is_copy_constructible for >= C++11

---
 .../range/detail/any_iterator_interface.hpp   | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/include/boost/range/detail/any_iterator_interface.hpp b/include/boost/range/detail/any_iterator_interface.hpp
index 38b307f..6c218e8 100644
--- a/include/boost/range/detail/any_iterator_interface.hpp
+++ b/include/boost/range/detail/any_iterator_interface.hpp
@@ -12,9 +12,11 @@
 
 #include <boost/range/detail/any_iterator_buffer.hpp>
 #include <boost/iterator/iterator_categories.hpp>
+#include <boost/mpl/not.hpp>
 #include <boost/type_traits/add_const.hpp>
 #include <boost/type_traits/add_reference.hpp>
 #include <boost/type_traits/is_abstract.hpp>
+#include <boost/type_traits/is_copy_constructible.hpp>
 #include <boost/type_traits/is_reference.hpp>
 #include <boost/type_traits/remove_const.hpp>
 #include <boost/type_traits/remove_reference.hpp>
@@ -38,16 +40,17 @@ namespace boost
         template<class T>
         struct reference_as_value_type_generator
         {
+            typedef typename remove_const<
+                typename remove_reference<T>::type
+            >::type const_reference_stripped_type;
+
             typedef typename mpl::if_<
-                typename is_abstract<
-                    typename remove_const<
-                        typename remove_reference<T>::type
-                    >::type
+                typename mpl::or_<
+                    mpl::not_<typename is_abstract<const_reference_stripped_type>::type>,
+                    typename is_copy_constructible<const_reference_stripped_type>::type
                 >::type,
-                T,
-                typename remove_const<
-                    typename remove_reference<T>::type
-                >::type
+                const_reference_stripped_type,
+                T
             >::type type;
         };