libxml++ crashes (sigfault), need assistance, please

[Aleksei Artemiev <aleksey artemiev gmail com>]

Hi and sorry for disturbance!

  We are using libxml++ in a SOAP server/recever and in a mediation platform. I observer xml++ crahes and I cannot get rid of that major issue. Here comes ldconfig output:

[root OCSPRODFE03 workflowProcess]# ldconfig -v | grep xml
ldconfig: Path `/lib64' given more than once
        libxmlrpc.so.3 -> libxmlrpc.so.3.16
        libxmlrpc_abyss.so.3 -> libxmlrpc_abyss.so.3.16
        libxml++-2.6.so.2 -> libxml++-2.6.so.2.0.7
        libxmlrpc_server_cgi.so.3 -> libxmlrpc_server_cgi.so.3.16
        libxmlrpc_server.so.3 -> libxmlrpc_server.so.3.16
        libxmlrpc_client.so.3 -> libxmlrpc_client.so.3.16
        libxmlrpc_server_abyss.so.3 -> libxmlrpc_server_abyss.so.3.16
        libxml2.so.2 -> libxml2.so.2.7.6
        libxmlrpc_util.so.3 -> libxmlrpc_util.so.3.16

The platform is:
Red Hat Enterprise Linux Server release 6.1 (Santiago)

Core dump:
Thread 41 (Thread 0x7fffcf986700 (LWP 9144)):
#0  0x0000003fb186a06f in std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&) ()
   from /usr/lib64/libstdc++.so.6
#1  0x00007ffff1127da3 in ?? () from /usr/lib64/libxml++-2.6.so.2
#2  0x00007ffff1127fdd in ?? () from /usr/lib64/libxml++-2.6.so.2
#3  0x00007ffff1128824 in xmlpp::Parser::initialize_context() () from /usr/lib64/libxml++-2.6.so.2
#4  0x00007ffff112ac4b in xmlpp::SaxParser::parse_chunk_raw(unsigned char const*, unsigned int) () from /usr/lib64/libxml++-2.6.so.2
#5  0x00000000006bd0cd in mediation::XMLCodec::decodeBuffer (this=0x242f800, buffer=
    "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<soapenv:Envelope xmlns:soapenv=\"http://www.w3.org/2003/05/soap-envelope\">\n   <soapenv:Header />\n   <soapenv:Body>\n      <INByPassSubscribeProductResultMsg xmlns"..., external_params=<value optimized out>) at ../../..
------------------------------------

We use many threads which have private sax parser object and call for parse_chunk for every new SOAP request or mediation event, so initialize_context is called pretty often (could be 500 times in a second). I did not find yet any maps objects in the sources which could be static or whatever. Probably, we have to stick to the latest parser versions. I am asking for help/advice as I cannot find anything related in the www and cannot clarify the reason of the crash. 

I will recall this message if this issue will be cleared in the meantime. Thanks in advance!

PS. SOAP decoding will be changed to parse_memory call as we always receive complete SOAP messages.

Alex.