Newbie Segfault Issue

From:
mearvk <mearvk@gmail.com>
Newsgroups:
comp.lang.c++
Date:
24 Oct 2007 09:29:37 -0700
Message-ID:
<1193190571.264179.300250@i13g2000prf.googlegroups.com>
A good bit of it is commented out so pay attention. I get a seg fault
(just says Segmentation Fault) when trying to run this with the line
below uncommented. I'm a java programmer so excuse the clumniness of
the code; it's still very early in development.

This line seems to be the culprit, but I'm not sure why:
document->getElementsByTagName(targetNodes); std::cout<<"7";

Help appreciated,

Max

[START SOURCE]

#include <string.h>
#include <iostream>

#include <xercesc/util/PlatformUtils.hpp>
#include <xercesc/parsers/XercesDOMParser.hpp>
#include <xercesc/dom/DOM.hpp>
#include <xercesc/dom/DOMDocument.hpp>
#include <xercesc/dom/DOMDocumentType.hpp>
#include <xercesc/dom/DOMElement.hpp>
#include <xercesc/dom/DOMImplementation.hpp>
#include <xercesc/dom/DOMImplementationLS.hpp>
#include <xercesc/dom/DOMNodeIterator.hpp>
#include <xercesc/dom/DOMNodeList.hpp>
#include <xercesc/dom/DOMText.hpp>

#include "DDAS_XML_Parser.h"

XERCES_CPP_NAMESPACE_USE

int main(int argc, char* argv[])
{
        try
        {
                //XMLPlatformUtils::Initialize();
        }
        catch (const XMLException& toCatch)
        {
                // Do your failure processing here
                //return 1;
        }

        // Do your actual work with Xerces-C++ here.
        std::string fileURL="results.xml";
        int* defNums=getDefinitionNumbers(fileURL.c_str());

        //Terminate DDAS_XML_Parser
        //XMLPlatformUtils::Terminate();

        // Other terminations and cleanup.

        return 0;
}

void echo(const char* e)
{
        std::cout<<e;
}

int* getDefinitionNumbers(const char* file_URL)
{

        try
        {
                XMLPlatformUtils::Initialize();
        }
        catch (const XMLException& toCatch)
        {
                char* message =
XMLString::transcode(toCatch.getMessage());
                std::cerr<<"ERROR:"<<message<<"."<<std::endl;
                XMLString::release(&message);
        }

        std::cout<<"1";

        XercesDOMParser* parser = new XercesDOMParser();

        parser->setValidationScheme(XercesDOMParser::Val_Auto);
        parser->setDoNamespaces(false);
        parser->setDoSchema(false);
        parser->setLoadExternalDTD(false);

        std::cout<<"2";

        //DOMDocument* document;
        //DOMElement * rootNode;
        //DOMNodeList* nodeList;

        XMLCh* targetNodes = XMLString::transcode("dataRow");
        XMLCh* targetAttrs = XMLString::transcode("defNumber");

        try
        {
                XMLPlatformUtils::Initialize();
        }
        catch (const XMLException& toCatch)
        {
                char* message =
XMLString::transcode(toCatch.getMessage());
                std::cerr<<"ERROR:"<<message<<"."<<std::endl;
                XMLString::release(&message);
        }

std::cout<<"3";

        try
        {
                parser->parse(file_URL);
std::cout<<"4";
                DOMDocument* document=parser-

getDocument(); std::cout<<"5";

                DOMElement* rootNode=document-

getDocumentElement(); std::cout<<"6";

                //document->getElementsByTagName(targetNodes);
std::cout<<"7";
        }
        catch(const XMLException& toCatch)
        {
                char* message =
XMLString::transcode(toCatch.getMessage());
                std::cerr<<"ERROR:"<<message<<"."<<std::endl;
                XMLString::release(&message);

        }

        //CLEAN UP
        //delete parser;
        XMLPlatformUtils::Terminate();

        return NULL;
}

/*
*
* g++ -c DDAS_XML_Parser.C
* g++ -L/usr/src/xerces-c-src_2_8_0/lib -lxerces-c
DDAS_XML_Parser.o -o test
*
*
*/
[STOP SOURCE]

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