unable to wrap an exception that inherits from std:exception (in <exception>)

Hello all,

I am trying to wrap an exception that inherits from std::exception that is found in the standard c++ include file <exception>.
I have reproduced this issue on Linux (Ubuntu 12.04) and Win7x64.

Ubuntu 12.04, Python 2.7.3, gcc 4.6.3, GCC-XML version 0.9.0, pybindgen 0.1.6
Win7x64 under MSVC++ 2008 Express, Python 2.6.6, GCC-XML version 0.9.0, pybindgen 0.1.6

The approach is using pybindgen to generate a script which then generates the wrapper code (Workflow 3).
The errors reported are at the first stage of the workflow.

To reproduce:

1. On Linux, open a terminal in which gccxml and python are accessible at the command line.
2. Cd to a folder that contains MyException.h and exc_module-gen.py as included below.
3. At the prompt, issue the command

                 python exc_module-gen.py 2> err.txt

4. Examine err.txt and see that it matches what is reported below. Specifically, there is an error

>>> looking at class gdf::exception::general [class]
C:\Users\wrap\MyException.h:21: ModuleParserWarning: Class ::gdf::exception::general ign
ored because it uses a base class (::std::exception) which is not declared.
  {

There are no special search paths or environment variables set up in the terminal, except that python, and gccxml are available in the path.

It is very possible that I am not using pybindgen in the correct way, but I have tried many things.
The final approach was to reduce the problem to this very minimal example.

Thanks and regards,

Owen

--------- MyException.h ------------------
#ifndef __MYEXCEPTION_H_INCLUDED__
#define __MYEXCEPTION_H_INCLUDED__

#include <exception>
#include <string>

namespace gdf {
        /// A general exception
        class general : public std::exception
        {
        public:
            general( const std::string str ) { msg = str; }
            virtual ~general( ) throw() { }
            const char *what( ) const throw() { return msg.c_str(); }
        private:
            std::string msg;
        };

}

#endif

-------- exc_module-gen.py --------------
#! /usr/bin/env python

import sys

import pybindgen
from pybindgen import FileCodeSink
from pybindgen.gccxmlparser import ModuleParser
import os.path

def my_module_gen():
    '''
    Generates a script codegen.py to generate a wrapper for MyException.h.

    Does not work yet...

    '''

    inputpath = "/home/user/Documents/pbg/MyException.h"

    pygen_file = open('codegen.py', "wt")

    gccxml_options = {'include_paths':
        ['.',
         '/usr/include/c++/4.6.3/',
         '/usr/include/python2.7/'],
         'gccxml_path':'/usr/bin/gccxml',
         'define_symbols':['_HAS_TR1=0']}

    module_parser = ModuleParser('MyException_module', '::')

    module_parser.parse_init([inputpath],
                             includes=['"%s"' % inputpath],
                             whitelist_paths=['/usr/include/c++/4.6.3/exception',],
                             gccxml_options=gccxml_options,
                             pygen_sink=FileCodeSink(pygen_file))

    module = module_parser.module
    std_exception=module.add_exception('exception', foreign_cpp_namespace='::std', message_rvalue='%(EXC)s.what()')
    general_exception=module.add_exception('general', foreign_cpp_namespace='::gdf', message_rvalue='%(EXC)s.what()', parent=std_exception)

    module_parser.scan_types()
    module_parser.scan_methods()
    module_parser.scan_functions()
    module_parser.parse_finalize()

    pygen_file.close()

if __name__ == '__main__':
    my_module_gen()

 ------------ err.txt ------------------------

INFO Parsing source file "/home/user/Documents/pbg/MyException.h" ...
INFO gccxml cmd: /usr/bin/gccxml -I"." -I"." -I"/usr/include/c++/4.6.3/" -I"/usr/include/python2.7/" -D"_HAS_TR1=0" "/home/user/Documents/pbg/MyException.h" -fxml="/tmp/tmptypbuX.xml"
INFO GCCXML version - 0.9
/home/user/Documents/pbg/MyException.h:14: ModuleParserWarning: Class ::gdf::general ignored because it uses a base class (::std::exception) which is not declared.
  {

---------------- end -------------------------------