Core Dump after instantiating a DOM_Node

["Lang, Jeff" <jl...@CSA.com>]

I am running Xerces C++ 1.6.0 on Solaris.  I compiled with g++.
I am trying to get my own programs to compile, but when I try parsing a
file, and then putting it into a DOM_Node I get an error when the
destructor is called on that DOM_Node.
 
for example:
 
#include <iostream>
#include <string>
#include <util/PlatformUtils.hpp>
#include <framework/StdInInputSource.hpp>
#include <parsers/DOMParser.hpp>
#include <dom/DOM_DOMException.hpp>
#include <framework/MemBufInputSource.hpp>
#include <util/XMLString.hpp>
#include <dom/DOM_Node.hpp>
         
int main(int argc, char* argv[]){
  try{
    XMLPlatformUtils::Initialize();
  }
  catch (const XMLException& toCatch){
    cerr << "Error during initialization! :\n"
         << XMLString::transcode(toCatch.getMessage()) << endl;
    return 1;
  }
  
  // Instantiate the DOM parser.
  DOMParser * parser = new DOMParser;
   
  char *XMLcode="<testdata>this is only a test</testdata>";
  StdInInputSource source;
  
  try{
    parser->parse(source);
  }
  catch (const XMLException& toCatch){
    cerr << "\nError during parsing\n"
         << "Exception message is:  \n"
         << XMLString::transcode(toCatch.getMessage()) << "\n" << endl;
    return 1;
  }
  catch (const DOM_DOMException& toCatch){
    cerr << "\nDOM Error during parsing\n"
         << "DOMException code is:  \n"
         << toCatch.code << "\n" << endl;
    return 1;
  }
  catch (...){
    cerr << "\nUnexpected exception during parsing\n";
    return 1;
  }
  
  DOM_Node doc = parser->getDocument();
  
  //clean up
  delete parser;
         
  XMLPlatformUtils::Terminate();

  cout<<"Core Dump comes after this point"<<endl;
   
  return 0;
}   
 
 
If i were to comment out the line instanciating the DOM_Node this will
run without any problems.
Any ideas what it might be?
 
Thanks in advance,
Jeff Lang

Re: Core Dump after instantiating a DOM_Node

[Tinny Ng <tn...@ca.ibm.com>]

The DOM_Node destructor is called at the end of  main AFTER
XMLPlatformUtils::Terminate().   This is similar to the problem
described in FAQ http://xml.apache.org/xerces-c/faq-parse.html#faq-29.
It is not valid to have DOM_Node destructor being called after the
Xerces-C++ system is terminated.  Try nesting your DOM_Node
instantiation inside an inner loop.

Tinny

"Lang, Jeff" wrote:

>  I am running Xerces C++ 1.6.0 on Solaris.  I compiled with g++.I am
> trying to get my own programs to compile, but when I try parsing a
> file, and then putting it into a DOM_Node I get an error when the
> destructor is called on that DOM_Node.for example:#include <iostream>
> #include <string>
> #include <util/PlatformUtils.hpp>
> #include <framework/StdInInputSource.hpp>
> #include <parsers/DOMParser.hpp>
> #include <dom/DOM_DOMException.hpp>
> #include <framework/MemBufInputSource.hpp>
> #include <util/XMLString.hpp>
> #include <dom/DOM_Node.hpp>
>
> int main(int argc, char* argv[]){
>   try{
>     XMLPlatformUtils::Initialize();
>   }
>   catch (const XMLException& toCatch){
>     cerr << "Error during initialization! :\n"
>          << XMLString::transcode(toCatch.getMessage()) << endl;
>     return 1;
>   }
>
>   // Instantiate the DOM parser.
>   DOMParser * parser = new DOMParser;
>
>   char *XMLcode="<testdata>this is only a test</testdata>";
>   StdInInputSource source;
>
>   try{
>     parser->parse(source);
>   }
>   catch (const XMLException& toCatch){
>     cerr << "\nError during parsing\n"
>          << "Exception message is:  \n"
>          << XMLString::transcode(toCatch.getMessage()) << "\n" <<
> endl;
>     return 1;
>   }
>   catch (const DOM_DOMException& toCatch){
>     cerr << "\nDOM Error during parsing\n"
>          << "DOMException code is:  \n"
>          << toCatch.code << "\n" << endl;
>     return 1;
>   }
>   catch (...){
>     cerr << "\nUnexpected exception during parsing\n";
>     return 1;  }
>
>   DOM_Node doc = parser->getDocument();
>
>   //clean up
>   delete parser;
>
>   XMLPlatformUtils::Terminate();
>   cout<<"Core Dump comes after this point"<<endl;
>   return 0;
> } If i were to comment out the line instanciating the DOM_Node this
> will run without any problems.Any ideas what it might be?Thanks in
> advance,Jeff Lang