Program: 51883
Project: 51883
Buggy source:
public Document preProcess(Document srcDoc) throws XulException {
  XPath xpath=new DefaultXPath("String_Node_Str");
  HashMap uris=new HashMap();
  uris.put("String_Node_Str","String_Node_Str");
  uris.put("String_Node_Str","String_Node_Str");
  xpath.setNamespaceURIs(uris);
  List<Element> eles=xpath.selectNodes(srcDoc);
  for (  Element ele : eles) {
    String src="String_Node_Str";
    src=this.getRootDir() + ele.attributeValue("String_Node_Str");
    String resourceBundle=ele.attributeValue("String_Node_Str");
    if (resourceBundle != null) {
      resourceBundles.add(resourceBundle);
    }
 else {
      resourceBundles.add(src.replace("String_Node_Str","String_Node_Str"));
    }
    InputStream in=null;
    try {
      in=getClass().getClassLoader().getResourceAsStream(src);
      if (in != null) {
        logger.debug("String_Node_Str" + src);
        includedSources.add(src);
      }
 else {
        src=ele.attributeValue("String_Node_Str");
        in=getClass().getClassLoader().getResourceAsStream(src);
        if (in != null) {
          includedSources.add(src);
          logger.debug("String_Node_Str" + src);
        }
 else {
          File f=new File(this.getRootDir() + src);
          if (f.exists()) {
            try {
              in=new FileInputStream(f);
              includedSources.add(src);
            }
 catch (            FileNotFoundException e) {
              e.printStackTrace();
            }
          }
        }
      }
      final Document doc=getDocFromInputStream(in);
      Element root=doc.getRootElement();
      String ignoreRoot=ele.attributeValue("String_Node_Str");
      if (root.getName().equals("String_Node_Str")) {
        processOverlay(root,ele.getDocument().getRootElement());
      }
 else       if (ignoreRoot == null || ignoreRoot.equalsIgnoreCase("String_Node_Str")) {
        logger.debug("String_Node_Str" + src);
        List contentOfParent=ele.getParent().content();
        int index=contentOfParent.indexOf(ele);
        contentOfParent.set(index,root);
        List<Element> overlays=ele.elements();
        for (        Element overlay : overlays) {
          logger.debug("String_Node_Str");
          this.processOverlay(overlay.attributeValue("String_Node_Str"),srcDoc);
        }
      }
 else {
        logger.debug("String_Node_Str" + src);
        List contentOfParent=ele.getParent().content();
        int index=contentOfParent.indexOf(ele);
        contentOfParent.remove(index);
        List children=root.elements();
        for (int i=children.size() - 1; i >= 0; i--) {
          contentOfParent.add(index,children.get(i));
        }
        List<Element> overlays=ele.elements();
        for (        Element overlay : overlays) {
          logger.debug("String_Node_Str");
          this.processOverlay(overlay.attributeValue("String_Node_Str"),srcDoc);
        }
      }
    }
  finally {
      try {
        if (in != null) {
          in.close();
        }
      }
 catch (      IOException ignored) {
      }
    }
  }
  return srcDoc;
}

Fixed version (ground truth):
public Document preProcess(Document srcDoc) throws XulException {
  XPath xpath=new DefaultXPath("String_Node_Str");
  HashMap uris=new HashMap();
  uris.put("String_Node_Str","String_Node_Str");
  uris.put("String_Node_Str","String_Node_Str");
  xpath.setNamespaceURIs(uris);
  List<Element> eles=xpath.selectNodes(srcDoc);
  for (  Element ele : eles) {
    String src="String_Node_Str";
    src=this.getRootDir() + ele.attributeValue("String_Node_Str");
    String resourceBundle=ele.attributeValue("String_Node_Str");
    if (resourceBundle != null) {
      resourceBundles.add(resourceBundle);
    }
 else {
      resourceBundles.add(src.replace("String_Node_Str","String_Node_Str"));
    }
    InputStream in=null;
    try {
      in=getClass().getClassLoader().getResourceAsStream(src);
      if (in != null) {
        logger.debug("String_Node_Str" + src);
        includedSources.add(src);
      }
 else {
        src=ele.attributeValue("String_Node_Str");
        in=getClass().getClassLoader().getResourceAsStream(src);
        if (in != null) {
          includedSources.add(src);
          logger.debug("String_Node_Str" + src);
        }
 else {
          File f=new File(this.getRootDir() + src);
          if (f.exists()) {
            try {
              in=new FileInputStream(f);
              includedSources.add(src);
            }
 catch (            FileNotFoundException e) {
              e.printStackTrace();
            }
          }
        }
      }
      final Document doc=getDocFromInputStream(in);
      Element root=doc.getRootElement();
      String ignoreRoot=ele.attributeValue("String_Node_Str");
      if (root.getName().equals("String_Node_Str")) {
        processOverlay(root,ele.getDocument().getRootElement());
      }
 else       if (ignoreRoot == null || ignoreRoot.equalsIgnoreCase("String_Node_Str")) {
        logger.debug("String_Node_Str" + src);
        List contentOfParent=ele.getParent().content();
        int index=contentOfParent.indexOf(ele);
        contentOfParent.set(index,root);
        if (root.getName().equals("String_Node_Str")) {
          String newOnload=root.attributeValue("String_Node_Str");
          if (newOnload != null) {
            String existingOnload=srcDoc.getRootElement().attributeValue("String_Node_Str");
            String finalOnload="String_Node_Str";
            if (existingOnload != null) {
              finalOnload=existingOnload + "String_Node_Str";
            }
            finalOnload+=newOnload;
            srcDoc.getRootElement().setAttributeValue("String_Node_Str",finalOnload);
          }
        }
        List<Element> overlays=ele.elements();
        for (        Element overlay : overlays) {
          logger.debug("String_Node_Str");
          this.processOverlay(overlay.attributeValue("String_Node_Str"),srcDoc);
        }
      }
 else {
        logger.debug("String_Node_Str" + src);
        List contentOfParent=ele.getParent().content();
        int index=contentOfParent.indexOf(ele);
        contentOfParent.remove(index);
        List children=root.elements();
        for (int i=children.size() - 1; i >= 0; i--) {
          Element child=(Element)children.get(i);
          contentOfParent.add(index,child);
          if (child.getName().equals("String_Node_Str")) {
            String newOnload=child.attributeValue("String_Node_Str");
            if (newOnload != null) {
              String existingOnload=srcDoc.getRootElement().attributeValue("String_Node_Str");
              String finalOnload="String_Node_Str";
              if (existingOnload != null) {
                finalOnload=existingOnload + "String_Node_Str";
              }
              finalOnload+=newOnload;
              srcDoc.getRootElement().setAttributeValue("String_Node_Str",finalOnload);
            }
          }
        }
        List<Element> overlays=ele.elements();
        for (        Element overlay : overlays) {
          logger.debug("String_Node_Str");
          this.processOverlay(overlay.attributeValue("String_Node_Str"),srcDoc);
        }
      }
    }
  finally {
      try {
        if (in != null) {
          in.close();
        }
      }
 catch (      IOException ignored) {
      }
    }
  }
  return srcDoc;
}