[Mono-bugs] [Bug 347768] New: XmlReader. ReadToNextSibling hangs when no next sibling exists

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https://bugzilla.novell.com/show_bug.cgi?id=347768


           Summary: XmlReader.ReadToNextSibling hangs when no next sibling
                    exists
           Product: Mono: Runtime
           Version: 1.2.6
          Platform: i386
        OS/Version: RHEL 5
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: misc
        AssignedTo: mono-bugs at ximian.com
        ReportedBy: srfcanada at hotmail.com
         QAContact: mono-bugs at ximian.com
          Found By: ---


Xml reader method hangs when reading xml file.
when it gets to reader.ReadToNextSibling("SystemsOfUnits"); it will hang at
that point. I also attached the xml file it was reading.


  /// <summary>
      /// Initialises the manager from a xml configuration file defining the
quantities and units. It
      /// generates the instances of the corresponding classes and add them to
the lists of quantities
      /// and units.
      /// </summary>
      /// <param name="fileName">The name of the xml file</param>
      public void InitialiseFromXmlConfigFile(string fileName)
      {
         // Creates the Xml reader giving the file name
         System.Console.WriteLine("A1");
         XmlReader reader = XmlReader.Create(fileName);
         System.Console.WriteLine("A2");
         // The first element is the root node and should be called
DRMSQuantitiesAndUnits
         reader.MoveToContent();
         System.Console.WriteLine("A3");
         if (!(reader.NodeType == XmlNodeType.Element && reader.Name ==
"DRMSQuantitiesAndUnits"))
         {
            throw new Exception("Root node should be
'DRMSQuantitiesAndUnits'");
         }
         System.Console.WriteLine("A4");
         // This is the loop over the base quantities
         bool stillReadingQuantities = true;
         System.Console.WriteLine("A6");
         while (stillReadingQuantities)
         {
            System.Console.WriteLine("A7");
            if (!reader.Read())
            {
               throw new Exception("Unexpected end of file before reading base
quantities list");
            }
            // Process the list of base quantities
            if (reader.NodeType == XmlNodeType.Element)
            {
               if (reader.Name != "BaseQuantities")
               {
                  {
                     throw new Exception("The list of base quantities is
missing");
                  }
               }
               // Loop over all base quantities
               m_numberOfBaseQuantities = 0;
               while (stillReadingQuantities)
               {
                  if (reader.NodeType == XmlNodeType.Element && reader.Name ==
"Quantity")
                  {
                     readBaseQuantity(reader);
                     reader.ReadToNextSibling("Quantity");
                     reader.ReadToNextSibling("Quantity");
                  }
                  else if (reader.NodeType == XmlNodeType.EndElement &&
reader.Name == "BaseQuantities")
                  {
                     stillReadingQuantities = false;
                  }
                  else
                  {
                     if (!reader.Read())
                     {
                        throw new Exception("Unexpected end of file in the
middle of base quantities list");
                     }
                  }
               }
            }
         }
         System.Console.WriteLine("A8");
         // This is the loop over the derived quantities
         stillReadingQuantities = true;
         System.Console.WriteLine("A9");
         while (stillReadingQuantities)
         {
            System.Console.WriteLine("A9a");
            // Process the list of derived quantities
            reader.ReadToNextSibling("DerivedQuantities");
            System.Console.WriteLine("A9b");
            if (reader.NodeType == XmlNodeType.Element)
            {
               if (reader.Name != "DerivedQuantities")
               {
                  {
                     throw new Exception("The list of derived quantities is
missing");
                  }
               }
               // Loop over all derived quantities
               stillReadingQuantities = true;
               m_numberOfDerivedQuantities = 0;
               while (stillReadingQuantities)
               {
                  if (reader.NodeType == XmlNodeType.Element && reader.Name ==
"Quantity")
                  {
                     readDerivedQuantity(reader);
                     reader.ReadToNextSibling("Quantity");
                     if (reader.NodeType == XmlNodeType.EndElement &&
reader.Name == "DerivedQuantities")
                     {
                        stillReadingQuantities = false;
                     }
                     else
                     {
                        reader.ReadToNextSibling("Quantity");
                     }
                  }
                  else
                  {
                     if (!reader.Read())
                     {
                        throw new Exception("Unexpected end of file in the
middle of base quantities list");
                     }
                  }
               }
            }
         }
         System.Console.WriteLine("A10");
         // This is the loop over the systems of units
         while (reader.Read())
         {
            System.Console.WriteLine("A10a"+reader.Name);
            // Process the list of systems of units
            reader.ReadToNextSibling("SystemsOfUnits");
            System.Console.WriteLine("A10aaaaaa");
            if (reader.NodeType == XmlNodeType.Element)
            {
               if (reader.Name != "SystemsOfUnits")
               {
                  {
                     throw new Exception("The list of systems of units is
missing");
                  }
               }
               // Loop over all systems of units
               bool stillReadingSystemsOfUnits = true;
               while (stillReadingSystemsOfUnits)
               {

                  System.Console.WriteLine("A10111"+reader.Name);
                  if (reader.NodeType == XmlNodeType.Element && reader.Name ==
"SystemOfUnits")
                  {
                     readSystemOfUnits(reader);
                     reader.ReadToNextSibling("SystemOfUnits");
                     reader.ReadToNextSibling("SystemOfUnits");
                  }
                  else if ((reader.NodeType == XmlNodeType.EndElement &&
reader.Name == "SystemsOfUnits") ||
                           (reader.NodeType == XmlNodeType.EndElement &&
reader.Name == "DRMSQuantitiesAndUnits"))
                  {
                     stillReadingSystemsOfUnits = false;
                  }
                  else
                  {
                     if (!reader.Read())
                     {
                        System.Console.WriteLine("A10Faile");
                        throw new Exception("Unexpected end of file in the
middle of base quantities list");
                     }
                  }
               }
            }
         }
         System.Console.WriteLine("A11");
         m_isInitialized = true;
      }


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