problem deleting TinyXML Node

[Anonymous]

bool MainWindow::SaveConfig( void )
{
   TiXmlNode *configNode      = NULL;
   TiXmlNode *varNode         = NULL;
   TiXmlNode *DeclarationNode = NULL;
   try
   {
      TiXmlDocument config;
      configNode      = new TiXmlElement( "CONFIG" );
      varNode         = new TiXmlElement( "VAR" );

      // var lastmap
      std::string MapFileName;
      if( m_TileMaps.size() > m_CurrentMap )
      {
         MapFileName = m_TileMaps[ m_CurrentMap ].GetMapFileName();
      }
      varNode->ToElement()->SetAttribute( "lastmap", MapFileName.c_str() );//m_MapFileName );
      configNode->LinkEndChild( varNode );
      //

      // finally add the config node
      config.InsertEndChild( *configNode->ToElement() );
      config.SaveFile( m_ConfgFileName );
      delete configNode;
      delete varNode; // crashes here
      return true;
   }
   catch( ... )
   {
      delete configNode;
      delete varNode;
      return false;
   }
}

Any Ideay why deleting varNode wouls cause a crash?

[Yves Berquin]

You have this problem because you mix up the two paradigms to add nodes :
As soon as you make a LinkEndChild with an element, you are saying to TinyXML : use it, it's yours. You can't delete it after that : TinyXML already did, when it deleted configNode.
This is not the same with your configNode, because there you use InsertEndChild which request TinyXML to insert a COPY of the input structure. It's still your job to delete then.

Yves

[Anonymous]

thanks alot!