--- libs\serialization\src\basic_iarchive.cpp	2010-11-12 04:56:29.000000000 +0100
+++ libs\serialization\src\basic_iarchive.cpp	2012-06-21 16:44:54.000000000 +0100
@@ -339,13 +339,13 @@
     void * & t
 ){
     object_id_type oid;
     load(ar, oid);

     // if its a reference to a old object
-    if(object_id_type(object_id_vector.size()) > oid){
+    if(object_id_type(static_cast<unsigned int>(object_id_vector.size())) > oid){
         // we're done
         t = object_id_vector[oid].address;
         return false;
     }
     return true;
 }
@@ -374,24 +374,24 @@

     // note: extra line used to evade borland issue
     const bool tracking = co.tracking_level;

     object_id_type this_id;
     moveable_objects_start =
-    this_id = object_id_type(object_id_vector.size());
+    this_id = object_id_type(static_cast<unsigned int>(object_id_vector.size()));

     // if we tracked this object when the archive was saved
     if(tracking){
         // if it was already read
         if(!track(ar, t))
             // we're done
             return;
         // add a new enty into the tracking list
         object_id_vector.push_back(aobject(t, cid));
         // and add an entry for this object
-        moveable_objects_end = object_id_type(object_id_vector.size());
+        moveable_objects_end = object_id_type(static_cast<unsigned int>(object_id_vector.size()));
     }
     // read data
     (bis.load_object_data)(ar, t, co.file_version);
     moveable_objects_recent = this_id;
 }

@@ -464,13 +464,13 @@
         serialization::state_saver<version_type> z(pending_version);

         pending_bis = & bpis_ptr->get_basic_serializer();
         pending_version = co.file_version;

         // predict next object id to be created
-        const unsigned int ui = object_id_vector.size();
+        const unsigned int ui = static_cast<unsigned int>(object_id_vector.size());

         serialization::state_saver<object_id_type> w_end(moveable_objects_end);

         // because the following operation could move the items
         // don't use co after this
         // add to list of serialized objects so that we can properly handle
--- libs\serialization\src\basic_oarchive.cpp	2010-11-12 04:56:29.000000000 +0100
+++ libs\serialization\src\basic_oarchive.cpp	2012-06-21 16:45:04.000000000 +0100
@@ -273,13 +273,13 @@
         // and save the data
         (bos.save_object_data)(ar, t);
         return;
     }

     // look for an existing object id
-    object_id_type oid(object_set.size());
+    object_id_type oid(static_cast<unsigned int>(object_set.size()));
     // lookup to see if this object has already been written to the archive
     basic_oarchive_impl::aobject ao(t, co.m_class_id, oid);
     std::pair<basic_oarchive_impl::object_set_type::const_iterator, bool>
         aresult = object_set.insert(ao);
     oid = aresult.first->object_id;

@@ -361,13 +361,13 @@
         pending_object = t;
         pending_bos = & bpos_ptr->get_basic_serializer();
         bpos_ptr->save_object_ptr(ar, t);
         return;
     }

-    object_id_type oid(object_set.size());
+    object_id_type oid(static_cast<unsigned int>(object_set.size()));
     // lookup to see if this object has already been written to the archive
     basic_oarchive_impl::aobject ao(t, co.m_class_id, oid);
     std::pair<basic_oarchive_impl::object_set_type::const_iterator, bool>
         aresult = object_set.insert(ao);
     oid = aresult.first->object_id;
     // if the saved object already exists