Program: 146951
Project: 146951
Buggy source:
/** 
 * For the current index: Checks whether the index represents a node which should exist given a non-interactive repeat, along with a count for that repeat which is beneath the dynamic level specified. If this index does represent such a node, the new model for the repeat is created behind the scenes and the index for the initial question is returned. Note: This method will not prevent the addition of new repeat elements in the interface, it will merely use the xforms repeat hint to create new nodes that are assumed to exist
 * @param The index to be evaluated as to whether the underlying model ishinted to exist
 */
private void createModelIfNecessary(FormIndex index){
  if (index.isInForm()) {
    IFormElement e=getForm().getChild(index);
    if (e instanceof GroupDef) {
      GroupDef g=(GroupDef)e;
      if (g.getRepeat() && g.getCountReference() != null) {
        IAnswerData count=getForm().getInstance().getDataValue(g.getCountReference());
        if (count != null) {
          int fullcount=((Integer)count.getValue()).intValue();
          TreeReference ref=getForm().getChildInstanceRef(index);
          TreeElement element=getForm().getInstance().resolveReference(ref);
          if (element == null) {
            if (index.getInstanceIndex() < fullcount) {
              try {
                getForm().createNewRepeat(index);
              }
 catch (              InvalidReferenceException ire) {
                ire.printStackTrace();
                throw new RuntimeException("String_Node_Str" + ire.getMessage());
              }
            }
          }
        }
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * For the current index: Checks whether the index represents a node which should exist given a non-interactive repeat, along with a count for that repeat which is beneath the dynamic level specified. If this index does represent such a node, the new model for the repeat is created behind the scenes and the index for the initial question is returned. Note: This method will not prevent the addition of new repeat elements in the interface, it will merely use the xforms repeat hint to create new nodes that are assumed to exist
 * @param The index to be evaluated as to whether the underlying model ishinted to exist
 */
private void createModelIfNecessary(FormIndex index){
  if (index.isInForm()) {
    IFormElement e=getForm().getChild(index);
    if (e instanceof GroupDef) {
      GroupDef g=(GroupDef)e;
      if (g.getRepeat() && g.getCountReference() != null) {
        IAnswerData count=getForm().getInstance().getDataValue(g.getCountReference());
        if (count != null) {
          long fullcount=((Integer)count.getValue()).intValue();
          TreeReference ref=getForm().getChildInstanceRef(index);
          TreeElement element=getForm().getInstance().resolveReference(ref);
          if (element == null) {
            if (index.getInstanceIndex() < fullcount) {
              try {
                getForm().createNewRepeat(index);
              }
 catch (              InvalidReferenceException ire) {
                ire.printStackTrace();
                throw new RuntimeException("String_Node_Str" + ire.getMessage());
              }
            }
          }
        }
      }
    }
  }
}