diff --git a/include/boost/exception/exception.hpp b/include/boost/exception/exception.hpp
index 79b2739..fd516dd 100644
--- a/include/boost/exception/exception.hpp
+++ b/include/boost/exception/exception.hpp
@@ -132,18 +132,6 @@ boost
             }
         };
 
-    template <class E,class Tag,class T>
-    E const & operator<<( E const &, error_info<Tag,T> const & );
-
-    template <class E>
-    E const & operator<<( E const &, throw_function const & );
-
-    template <class E>
-    E const & operator<<( E const &, throw_file const & );
-
-    template <class E>
-    E const & operator<<( E const &, throw_line const & );
-
     class exception;
 
     template <class>
@@ -163,6 +151,7 @@ boost
             virtual void set( shared_ptr<error_info_base> const &, type_info_ const & ) = 0;
             virtual void add_ref() const = 0;
             virtual void release() const = 0;
+            virtual refcount_ptr<exception_detail::error_info_container> clone() const = 0;
 
             protected:
 
@@ -184,6 +173,20 @@ boost
         struct get_info<throw_line>;
 
         char const * get_diagnostic_information( exception const &, char const * );
+
+        void copy_boost_exception( exception *, exception const * );
+
+        template <class E,class Tag,class T>
+        E const & set_info( E const &, error_info<Tag,T> const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_function const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_file const & );
+
+        template <class E>
+        E const & set_info( E const &, throw_line const & );
         }
 
     class
@@ -216,30 +219,31 @@ boost
 #endif
             ;
 
-#if defined(__MWERKS__) && __MWERKS__<=0x3207
+#if (defined(__MWERKS__) && __MWERKS__<=0x3207) || (defined(_MSC_VER) && _MSC_VER<=1310)
         public:
 #else
         private:
 
         template <class E>
-        friend E const & operator<<( E const &, throw_function const & );
+        friend E const & exception_detail::set_info( E const &, throw_function const & );
 
         template <class E>
-        friend E const & operator<<( E const &, throw_file const & );
+        friend E const & exception_detail::set_info( E const &, throw_file const & );
 
         template <class E>
-        friend E const & operator<<( E const &, throw_line const & );
-
-        friend char const * exception_detail::get_diagnostic_information( exception const &, char const * );
+        friend E const & exception_detail::set_info( E const &, throw_line const & );
 
         template <class E,class Tag,class T>
-        friend E const & operator<<( E const &, error_info<Tag,T> const & );
+        friend E const & exception_detail::set_info( E const &, error_info<Tag,T> const & );
+
+        friend char const * exception_detail::get_diagnostic_information( exception const &, char const * );
 
         template <class>
         friend struct exception_detail::get_info;
         friend struct exception_detail::get_info<throw_function>;
         friend struct exception_detail::get_info<throw_file>;
         friend struct exception_detail::get_info<throw_line>;
+        friend void exception_detail::copy_boost_exception( exception *, exception const * );
 #endif
         mutable exception_detail::refcount_ptr<exception_detail::error_info_container> data_;
         mutable char const * throw_function_;
@@ -253,28 +257,32 @@ boost
         {
         }
 
-    template <class E>
-    E const &
-    operator<<( E const & x, throw_function const & y )
+    namespace
+    exception_detail
         {
-        x.throw_function_=y.v_;
-        return x;
-        }
+        template <class E>
+        E const &
+        set_info( E const & x, throw_function const & y )
+            {
+            x.throw_function_=y.v_;
+            return x;
+            }
 
-    template <class E>
-    E const &
-    operator<<( E const & x, throw_file const & y )
-        {
-        x.throw_file_=y.v_;
-        return x;
-        }
+        template <class E>
+        E const &
+        set_info( E const & x, throw_file const & y )
+            {
+            x.throw_file_=y.v_;
+            return x;
+            }
 
-    template <class E>
-    E const &
-    operator<<( E const & x, throw_line const & y )
-        {
-        x.throw_line_=y.v_;
-        return x;
+        template <class E>
+        E const &
+        set_info( E const & x, throw_line const & y )
+            {
+            x.throw_line_=y.v_;
+            return x;
+            }
         }
 
     ////////////////////////////////////////////////////////////////////////
@@ -300,10 +308,10 @@ boost
             };
 
         struct large_size { char c[256]; };
-        large_size dispatch( exception * );
+        large_size dispatch_boost_exception( exception const * );
 
         struct small_size { };
-        small_size dispatch( void * );
+        small_size dispatch_boost_exception( void const * );
 
         template <class,int>
         struct enable_error_info_helper;
@@ -326,7 +334,7 @@ boost
         struct
         enable_error_info_return_type
             {
-            typedef typename enable_error_info_helper<T,sizeof(exception_detail::dispatch((T*)0))>::type type;
+            typedef typename enable_error_info_helper<T,sizeof(exception_detail::dispatch_boost_exception((T*)0))>::type type;
             };
         }
 
@@ -363,7 +371,13 @@ boost
         void
         copy_boost_exception( exception * a, exception const * b )
             {
-            *a = *b;
+            refcount_ptr<error_info_container> data;
+            if( error_info_container * d=b->data_.get() )
+                data = d->clone();
+            a->throw_file_ = b->throw_file_;
+            a->throw_line_ = b->throw_line_;
+            a->throw_function_ = b->throw_function_;
+            a->data_ = data;
             }
 
         inline
diff --git a/include/boost/throw_exception.hpp b/include/boost/throw_exception.hpp
index 656b8de..1d018c5 100644
--- a/include/boost/throw_exception.hpp
+++ b/include/boost/throw_exception.hpp
@@ -36,16 +36,32 @@
 #if !defined( BOOST_EXCEPTION_DISABLE )
 # include <boost/exception/exception.hpp>
 # include <boost/current_function.hpp>
-# define BOOST_THROW_EXCEPTION(x) ::boost::throw_exception(::boost::enable_error_info(x) <<\
-    ::boost::throw_function(BOOST_CURRENT_FUNCTION) <<\
-    ::boost::throw_file(__FILE__) <<\
-    ::boost::throw_line(__LINE__))
+# define BOOST_THROW_EXCEPTION(x) ::boost::exception_detail::throw_exception_(x,BOOST_CURRENT_FUNCTION,__FILE__,__LINE__)
 #else
 # define BOOST_THROW_EXCEPTION(x) ::boost::throw_exception(x)
 #endif
 
 namespace boost
 {
+#if !defined( BOOST_EXCEPTION_DISABLE )
+    namespace
+    exception_detail
+    {
+        template <class E>
+        void
+        throw_exception_( E const & x, char const * current_function, char const * file, int line )
+        {
+            throw_exception(
+                set_info(
+                    set_info(
+                        set_info(
+                            enable_error_info(x),
+                            throw_function(current_function)),
+                        throw_file(file)),
+                    throw_line(line)));
+        }
+    }
+#endif
 
 #ifdef BOOST_NO_EXCEPTIONS