Program: 56974
Project: 56974
Buggy source:
public void encodeHTML(FacesContext context,UIComponent navlink) throws IOException {
  ResponseWriter rw=context.getResponseWriter();
  String value=(String)((AbstractNavLink)navlink).getValue();
  String htmlTag="String_Node_Str";
  UIComponent parent=navlink.getParent();
  if (parent != null) {
    if (parent instanceof DropButton || parent instanceof NavBar || parent instanceof TabLinks|| parent instanceof PillLinks|| parent instanceof ListLinks) {
      htmlTag="String_Node_Str";
    }
 else {
      System.out.println(parent.getClass().getName());
    }
  }
  rw.startElement(htmlTag,navlink);
  writeAttribute(rw,"String_Node_Str",navlink.getClientId(context),"String_Node_Str");
  Tooltip.generateTooltip(context,navlink,rw);
  AJAXRenderer.generateBootsFacesAJAXAndJavaScript(context,(ClientBehaviorHolder)navlink,rw);
  R.encodeHTML4DHTMLAttrs(rw,navlink.getAttributes(),H.ALLBUTTON);
  writeAttribute(rw,"String_Node_Str",getStyleClasses(((AbstractNavLink)navlink)));
  writeAttribute(rw,"String_Node_Str",((AbstractNavLink)navlink).getStyle());
  rw.startElement("String_Node_Str",navlink);
  writeAttribute(rw,"String_Node_Str",((AbstractNavLink)navlink).getContentStyle(),"String_Node_Str");
  writeAttribute(rw,"String_Node_Str",((AbstractNavLink)navlink).getContentClass(),"String_Node_Str");
  boolean hasActionExpression=false;
  if (navlink instanceof NavCommandLink)   if (((NavCommandLink)navlink).getActionExpression() != null)   hasActionExpression=true;
  if (((AbstractNavLink)navlink).getUpdate() == null && (!((AbstractNavLink)navlink).isAjax()) && (!hasActionExpression)) {
    String url=encodeHref(context,((AbstractNavLink)navlink));
    if (url == null) {
      if (FacesContext.getCurrentInstance().getApplication().getProjectStage().equals(ProjectStage.Development)) {
        writeAttribute(rw,"String_Node_Str","String_Node_Str",null);
        writeAttribute(rw,"String_Node_Str",FacesContext.getCurrentInstance().getApplication().getProjectStage() + "String_Node_Str" + "String_Node_Str",null);
      }
      url="String_Node_Str";
    }
    writeAttribute(rw,"String_Node_Str",url,null);
  }
  writeAttribute(rw,"String_Node_Str","String_Node_Str",null);
  writeAttribute(rw,"String_Node_Str","String_Node_Str",null);
  String icon=((AbstractNavLink)navlink).getIcon();
  String faicon=((AbstractNavLink)navlink).getIconAwesome();
  boolean fa=false;
  if (faicon != null) {
    icon=faicon;
    fa=true;
  }
  if (icon != null) {
    Object ialign=((AbstractNavLink)navlink).getIconAlign();
    if (ialign != null && ialign.equals("String_Node_Str")) {
      if (value != null)       rw.writeText(value + "String_Node_Str",null);
      if (navlink.getChildCount() > 0) {
        for (        UIComponent c : navlink.getChildren()) {
          c.encodeAll(context);
        }
      }
      IconRenderer.encodeIcon(rw,navlink,icon,fa);
    }
 else {
      IconRenderer.encodeIcon(rw,navlink,icon,fa);
      if (navlink.getChildCount() > 0) {
        for (        UIComponent c : navlink.getChildren()) {
          c.encodeAll(context);
        }
      }
      if (value != null)       rw.writeText("String_Node_Str" + value,null);
    }
  }
 else {
    if (value != null)     rw.writeText(value,null);
    if (navlink.getChildCount() > 0) {
      for (      UIComponent c : navlink.getChildren()) {
        c.encodeAll(context);
      }
    }
  }
  rw.endElement("String_Node_Str");
  rw.endElement(htmlTag);
}

Fixed version (ground truth):
public void encodeHTML(FacesContext context,UIComponent navlink) throws IOException {
  ResponseWriter rw=context.getResponseWriter();
  String value=(String)((AbstractNavLink)navlink).getValue();
  String htmlTag="String_Node_Str";
  UIComponent parent=navlink.getParent();
  if (parent != null) {
    if (parent instanceof DropButton || parent instanceof NavBar || parent instanceof TabLinks|| parent instanceof PillLinks|| parent instanceof ListLinks|| parent instanceof NavBarLinks|| parent instanceof DropMenu) {
      htmlTag="String_Node_Str";
    }
  }
  rw.startElement(htmlTag,navlink);
  writeAttribute(rw,"String_Node_Str",navlink.getClientId(context),"String_Node_Str");
  Tooltip.generateTooltip(context,navlink,rw);
  AJAXRenderer.generateBootsFacesAJAXAndJavaScript(context,(ClientBehaviorHolder)navlink,rw);
  R.encodeHTML4DHTMLAttrs(rw,navlink.getAttributes(),H.ALLBUTTON);
  writeAttribute(rw,"String_Node_Str",getStyleClasses(((AbstractNavLink)navlink)));
  writeAttribute(rw,"String_Node_Str",((AbstractNavLink)navlink).getStyle());
  rw.startElement("String_Node_Str",navlink);
  writeAttribute(rw,"String_Node_Str",((AbstractNavLink)navlink).getContentStyle(),"String_Node_Str");
  writeAttribute(rw,"String_Node_Str",((AbstractNavLink)navlink).getContentClass(),"String_Node_Str");
  boolean hasActionExpression=false;
  if (navlink instanceof NavCommandLink)   if (((NavCommandLink)navlink).getActionExpression() != null)   hasActionExpression=true;
  if (((AbstractNavLink)navlink).getUpdate() == null && (!((AbstractNavLink)navlink).isAjax()) && (!hasActionExpression)) {
    String url=encodeHref(context,((AbstractNavLink)navlink));
    if (url == null) {
      if (FacesContext.getCurrentInstance().getApplication().getProjectStage().equals(ProjectStage.Development)) {
        writeAttribute(rw,"String_Node_Str","String_Node_Str",null);
        writeAttribute(rw,"String_Node_Str",FacesContext.getCurrentInstance().getApplication().getProjectStage() + "String_Node_Str" + "String_Node_Str",null);
      }
      url="String_Node_Str";
    }
    writeAttribute(rw,"String_Node_Str",url,null);
  }
  writeAttribute(rw,"String_Node_Str","String_Node_Str",null);
  writeAttribute(rw,"String_Node_Str","String_Node_Str",null);
  String icon=((AbstractNavLink)navlink).getIcon();
  String faicon=((AbstractNavLink)navlink).getIconAwesome();
  boolean fa=false;
  if (faicon != null) {
    icon=faicon;
    fa=true;
  }
  if (icon != null) {
    Object ialign=((AbstractNavLink)navlink).getIconAlign();
    if (ialign != null && ialign.equals("String_Node_Str")) {
      if (value != null)       rw.writeText(value + "String_Node_Str",null);
      if (navlink.getChildCount() > 0) {
        for (        UIComponent c : navlink.getChildren()) {
          c.encodeAll(context);
        }
      }
      IconRenderer.encodeIcon(rw,navlink,icon,fa);
    }
 else {
      IconRenderer.encodeIcon(rw,navlink,icon,fa);
      if (navlink.getChildCount() > 0) {
        for (        UIComponent c : navlink.getChildren()) {
          c.encodeAll(context);
        }
      }
      if (value != null)       rw.writeText("String_Node_Str" + value,null);
    }
  }
 else {
    if (value != null)     rw.writeText(value,null);
    if (navlink.getChildCount() > 0) {
      for (      UIComponent c : navlink.getChildren()) {
        c.encodeAll(context);
      }
    }
  }
  rw.endElement("String_Node_Str");
  rw.endElement(htmlTag);
}