Program: 11093
Project: 11093
Buggy source:
/** 
 * Read a list of   {@link Attribute}s from the provided XML element and add them to the  {@link AVList} under the provided parameter key.
 * @param element XML element under which to read attributes from
 * @param xpath XPath object
 * @param paramKey Key to use when setting the list in the params
 * @param params Params in which to add the list of attributes
 */
public static void addAttributes(Element element,XPath xpath,String paramKey,AVList params){
  List<Attribute> attributes=new ArrayList<Attribute>();
  Element[] attributesElements=WWXML.getElements(element,"String_Node_Str",xpath);
  if (attributesElements != null) {
    for (    Element a : attributesElements) {
      String name=WWXML.getText(a,"String_Node_Str",xpath);
      Attribute attribute=new Attribute(name);
      Element[] cases=WWXML.getElements(a,"String_Node_Str",xpath);
      if (cases != null) {
        for (        Element c : cases) {
          String value=WWXML.getText(c,"String_Node_Str",xpath);
          String style=WWXML.getText(c,"String_Node_Str",xpath);
          attribute.addCase(value,style);
        }
      }
      Element[] regexes=WWXML.getElements(a,"String_Node_Str",xpath);
      if (regexes != null) {
        for (        Element r : regexes) {
          String pattern=WWXML.getText(r,"String_Node_Str",xpath);
          String style=WWXML.getText(r,"String_Node_Str",xpath);
          attribute.addRegex(pattern,style);
        }
      }
      Element[] ranges=WWXML.getElements(a,"String_Node_Str",xpath);
      if (ranges != null) {
        for (        Element r : ranges) {
          Double min=WWXML.getDouble(r,"String_Node_Str",xpath);
          Double max=WWXML.getDouble(r,"String_Node_Str",xpath);
          String style=WWXML.getText(r,"String_Node_Str",xpath);
          attribute.addRange(min,max,style);
        }
      }
      Element text=WWXML.getElement(a,"String_Node_Str",xpath);
      if (text != null) {
        String value=WWXML.getText(text,"String_Node_Str",xpath);
        String placeholder=WWXML.getText(text,"String_Node_Str",xpath);
        attribute.addText(value,placeholder);
      }
      Element link=WWXML.getElement(a,"String_Node_Str",xpath);
      if (link != null) {
        String url=WWXML.getText(link,"String_Node_Str",xpath);
        String placeholder=WWXML.getText(link,"String_Node_Str",xpath);
        attribute.addLink(url,placeholder);
      }
      attributes.add(attribute);
    }
  }
  params.setValue(paramKey,attributes);
}

Fixed version (ground truth):
/** 
 * Read a list of   {@link Attribute}s from the provided XML element and add them to the   {@link AVList} under the provided parameter key.
 * @param element XML element under which to read attributes from
 * @param xpath XPath object
 * @param paramKey Key to use when setting the list in the params
 * @param params Params in which to add the list of attributes
 */
public static void addAttributes(Element element,XPath xpath,String paramKey,AVList params){
  List<Attribute> attributes=new ArrayList<Attribute>();
  if (element != null) {
    Element[] attributesElements=WWXML.getElements(element,"String_Node_Str",xpath);
    if (attributesElements != null) {
      for (      Element a : attributesElements) {
        String name=WWXML.getText(a,"String_Node_Str",xpath);
        Attribute attribute=new Attribute(name);
        Element[] cases=WWXML.getElements(a,"String_Node_Str",xpath);
        if (cases != null) {
          for (          Element c : cases) {
            String value=WWXML.getText(c,"String_Node_Str",xpath);
            String style=WWXML.getText(c,"String_Node_Str",xpath);
            attribute.addCase(value,style);
          }
        }
        Element[] regexes=WWXML.getElements(a,"String_Node_Str",xpath);
        if (regexes != null) {
          for (          Element r : regexes) {
            String pattern=WWXML.getText(r,"String_Node_Str",xpath);
            String style=WWXML.getText(r,"String_Node_Str",xpath);
            attribute.addRegex(pattern,style);
          }
        }
        Element[] ranges=WWXML.getElements(a,"String_Node_Str",xpath);
        if (ranges != null) {
          for (          Element r : ranges) {
            Double min=WWXML.getDouble(r,"String_Node_Str",xpath);
            Double max=WWXML.getDouble(r,"String_Node_Str",xpath);
            String style=WWXML.getText(r,"String_Node_Str",xpath);
            attribute.addRange(min,max,style);
          }
        }
        Element text=WWXML.getElement(a,"String_Node_Str",xpath);
        if (text != null) {
          String value=WWXML.getText(text,"String_Node_Str",xpath);
          String placeholder=WWXML.getText(text,"String_Node_Str",xpath);
          attribute.addText(value,placeholder);
        }
        Element link=WWXML.getElement(a,"String_Node_Str",xpath);
        if (link != null) {
          String url=WWXML.getText(link,"String_Node_Str",xpath);
          String placeholder=WWXML.getText(link,"String_Node_Str",xpath);
          attribute.addLink(url,placeholder);
        }
        attributes.add(attribute);
      }
    }
  }
  params.setValue(paramKey,attributes);
}