--- boost/circular_buffer/base.hpp.orig	2014-09-26 12:06:54.483081827 +0200
+++ boost/circular_buffer/base.hpp	2014-09-26 12:07:35.282158657 +0200
@@ -755,7 +755,7 @@
         BOOST_CB_ASSERT(new_begin.is_valid(this)); // check for uninitialized or invalidated iterator
         BOOST_CB_ASSERT(new_begin.m_it != 0);      // check for iterator pointing to end()
         if (full()) {
-            m_first = m_last = const_cast<pointer>(new_begin.m_it);
+            m_first = m_last = boost::intrusive::pointer_traits<pointer>::const_cast_from(new_begin.m_it);
         } else {
             difference_type m = end() - new_begin;
             difference_type n = new_begin - begin();