Probleme with G++, shared library and exception

[Laurent Marzullo <laurent at marzu dot org>]

Hello all,

I'm using g++ 3.4.6.

I've wrote a program which is linked against a shared library. This shared
library is not dlopened ... just linked against my prog.

The shared library define a C++ class as follow

class ErrorHandler
{
    public:
        ...
        virtual void fatalError( const XmlParsingException& ) = 0;
        ...
};

The shared library also define exception class:

class Exception
{
...
};

class RuntimeException : public Exception
{
...
};


class XmlParsingException : public RuntimeException
{
...
};


class DOMParser
{
    public:
        ...
        Document       parseFile( const char* );
        void           setErrorHandler( ErrorHandler* );
        ErrorHandler*  getErrorHandler( void ) const;
};


The method parseFile will then call the error handler method (set when calling
'setErrorHandler' when any fatal error occured).


My program then define a concrete implementation of the ErrorHandler as follow:

class MyErrorHandler : public ErrorHandler
{
    public:
        ...
        virtual void    fatalError( const XmlParsingException& excp )
        {
            // throw std::bad_cast()
            throw XmlParsingException( p_excp );
        }
        ...
};

and in the main part:

try
{
    DOMParser    parser;
    parser.setErrorHandler( new MyErrorHandler() );
    Document doc = parser.parserFile( "test1.xml" );
}
catch ( XmlParsingException& excp )
{
    std::cerr << excp.what();
}
catch ( std::exception& excp )
{
    std::cerr << excp.what();
}
catch ( ... )
{
    std::cerr << "Unknown exception!\n";
}


But my program finished like this:
terminate called after throwing an instance of
'Gargoyle::XML::XmlParsingException'
Aborted


And if I replace XmlParsingException by std::bad_cast into the fatalError method
the message is:
terminate called after throwing an instance of 'std::bad_cast'
  what():   St8bad_cast
Aborted


Could anyone explain why none of my catch bloc (even the catch(...)) is run in
such case ??


Thanks a lot every body for any help.


+--------------------+
+ Laurent Marzullo
+