Serialisation of pointers is ok linux, hpux, but has the following exception:<br>  archive_exception::unregistered_class on IBM AIX v10.1 using boost 1.39<br><br>Trivial case can be made to work. However as the number of files<br>
grows, pointer serialisation start/stops working.<br>There seems to undefined behaviour.<br><br>There is a _known_ problem with serialisation via base pointer,<br>however this problem is exhibited with normal pointer serialisation.<br>
<br>It is extremely difficult to create small enough test case <br>which shows the problem. Sometimes a test case will work <br>and at other times a seemly innocuous  change (like adding/removing more hierarchy)<br>will show the problem again. <br>
<br>There does not appear to be any rhyme or reason why,  Could it be a compiler issue ?<br><br>    template&lt;class T&gt;<br>     struct polymorphic<br>     {<br>         static void save(<br>             Archive &amp;ar, <br>
             T &amp; t<br>         ){<br>             ........<br> <br>             const boost::serialization::extended_type_info * true_type =<br>                 i.get_derived_extended_type_info(t);<br> <br>             // note:if this exception is thrown, be sure that derived pointer<br>
             // is either registered or exported.<br>             if(NULL == true_type){<br>                 boost::serialization::throw_exception(<br>                     archive_exception(archive_exception::unregistered_class)  &lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;&lt;<br>
                 );<br>             }<br><br>Has any one else come across this weird behaviour,<br>in fact I would like to here from anyone who has got pointer serialization<br>working consistently on AIX.<br><br>Any help greatly appreciated<br>
<br>Ta,<br>  Avi<br>