Index: boost/variant/detail/apply_visitor_binary.hpp
===================================================================
--- boost/variant/detail/apply_visitor_binary.hpp	(revision 57543)
+++ boost/variant/detail/apply_visitor_binary.hpp	(working copy)
@@ -63,6 +63,9 @@
         return visitor_(value1_, value2);
     }
 
+private:
+    apply_visitor_binary_invoke& operator=(const apply_visitor_binary_invoke&);
+
 };
 
 template <typename Visitor, typename Visitable2>
@@ -100,6 +103,9 @@
         return boost::apply_visitor(invoker, visitable2_);
     }
 
+private:
+    apply_visitor_binary_unwrap& operator=(const apply_visitor_binary_unwrap&);
+
 };
 
 }} // namespace detail::variant
Index: boost/variant/detail/apply_visitor_delayed.hpp
===================================================================
--- boost/variant/detail/apply_visitor_delayed.hpp	(revision 57543)
+++ boost/variant/detail/apply_visitor_delayed.hpp	(working copy)
@@ -72,6 +72,9 @@
         return apply_visitor(visitor_, visitable1, visitable2);
     }
 
+private:
+    apply_visitor_delayed_t& operator=(const apply_visitor_delayed_t&);
+
 };
 
 template <typename Visitor>
Index: boost/variant/detail/variant_io.hpp
===================================================================
--- boost/variant/detail/variant_io.hpp	(revision 57543)
+++ boost/variant/detail/variant_io.hpp	(working copy)
@@ -64,6 +64,9 @@
         out_ << operand;
     }
 
+private:
+    printer& operator=(const printer&);
+
 };
 
 }} // namespace detail::variant
Index: boost/variant/detail/visitation_impl.hpp
===================================================================
--- boost/variant/detail/visitation_impl.hpp	(revision 57543)
+++ boost/variant/detail/visitation_impl.hpp	(working copy)
@@ -35,6 +35,10 @@
 #include "boost/type_traits/has_nothrow_copy.hpp"
 #include "boost/variant/detail/has_nothrow_move.hpp"
 
+#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) 
+# pragma warning (push) 
+# pragma warning (disable : 4702) //unreachable code 
+#endif
 
 ///////////////////////////////////////////////////////////////////////////////
 // BOOST_VARIANT_VISITATION_UNROLLING_LIMIT
@@ -283,4 +287,8 @@
 }} // namespace detail::variant
 } // namespace boost
 
+#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400)  
+# pragma warning(pop)  
+#endif 
+
 #endif // BOOST_VARIANT_DETAIL_VISITATION_IMPL_HPP
Index: boost/variant/variant.hpp
===================================================================
--- boost/variant/variant.hpp	(revision 57543)
+++ boost/variant/variant.hpp	(working copy)
@@ -698,6 +698,9 @@
         ::boost::detail::variant::move_swap( operand, other );
     }
 
+private:
+    swap_with& operator=(const swap_with&);
+
 };
 
 ///////////////////////////////////////////////////////////////////////////////
@@ -759,6 +762,9 @@
         return Comp()(lhs_content, rhs_content);
     }
 
+private:
+    comparer& operator=(const comparer&);
+
 };
 
 ///////////////////////////////////////////////////////////////////////////////
Index: libs/variant/test/test7.cpp
===================================================================
--- libs/variant/test/test7.cpp	(revision 57543)
+++ libs/variant/test/test7.cpp	(working copy)
@@ -197,6 +197,9 @@
 
    ValueType& expected_;
 
+private:
+   compare_helper& operator=(const compare_helper&);
+
 };
 
 template<typename VariantType, typename ExpectedType>