Program: 15894
Project: 15894
Buggy source:
public String render(final Component owner,final Object data,final int index) throws Exception {
  final int size=((Selectbox)owner).getModel().getSize();
  final Template tm=resolveTemplate(owner,owner,data,index,size,"String_Node_Str");
  if (tm == null) {
    return Objects.toString(data);
  }
 else {
    final ForEachStatus iterStatus=new AbstractForEachStatus(){
      private static final long serialVersionUID=1L;
      public int getIndex(){
        return index;
      }
      public Object getCurrent(){
        return data;
      }
      public Integer getEnd(){
        return size;
      }
    }
;
    final String var=(String)tm.getParameters().get(EACH_ATTR);
    final String varnm=var == null ? EACH_VAR : var;
    final String itervar=(String)tm.getParameters().get(STATUS_ATTR);
    final String itervarnm=itervar == null ? (var == null ? EACH_STATUS_VAR : varnm + STATUS_POST_VAR) : itervar;
    Object oldVar=owner.getAttribute(varnm);
    Object oldIter=owner.getAttribute(itervarnm);
    owner.setAttribute(varnm,data);
    owner.setAttribute(itervarnm,iterStatus);
    final Component[] items=filterOutShadows(owner,tm.create(owner,null,null,null));
    owner.setAttribute(varnm,oldVar);
    owner.setAttribute(itervarnm,oldIter);
    if (items.length != 1)     throw new UiException("String_Node_Str" + items.length);
    if (!(items[0] instanceof Label))     throw new UiException("String_Node_Str" + items[0]);
    final Label lbl=((Label)items[0]);
    lbl.setAttribute(BinderImpl.VAR,varnm);
    addItemReference(owner,lbl,index,varnm);
    lbl.setAttribute(itervarnm,iterStatus);
    addTemplateTracking(owner,lbl,data,index,size);
    Events.sendEvent(new Event(BinderImpl.ON_BIND_INIT,lbl));
    lbl.detach();
    return lbl.getValue();
  }
}

Fixed version (ground truth):
public String render(final Component owner,final Object data,final int index) throws Exception {
  final int size=((Selectbox)owner).getModel().getSize();
  final Template tm=resolveTemplate(owner,owner,data,index,size,"String_Node_Str");
  if (tm == null) {
    return Objects.toString(data);
  }
 else {
    final ForEachStatus iterStatus=new AbstractForEachStatus(){
      private static final long serialVersionUID=1L;
      public int getIndex(){
        return index;
      }
      public Object getCurrent(){
        return data;
      }
      public Integer getEnd(){
        return size;
      }
    }
;
    final String var=(String)tm.getParameters().get(EACH_ATTR);
    final String varnm=var == null ? EACH_VAR : var;
    final String itervar=(String)tm.getParameters().get(STATUS_ATTR);
    final String itervarnm=itervar == null ? (var == null ? EACH_STATUS_VAR : varnm + STATUS_POST_VAR) : itervar;
    Object oldVar=owner.getAttribute(varnm);
    Object oldIter=owner.getAttribute(itervarnm);
    owner.setAttribute(varnm,data);
    owner.setAttribute(itervarnm,iterStatus);
    final Component[] items=filterOutShadows(owner,tm.create(owner,null,null,null));
    if (oldVar == null) {
      owner.removeAttribute(varnm);
    }
 else {
      owner.setAttribute(varnm,oldVar);
    }
    if (oldIter == null) {
      owner.removeAttribute(itervarnm);
    }
 else {
      owner.setAttribute(itervarnm,oldIter);
    }
    if (items.length != 1)     throw new UiException("String_Node_Str" + items.length);
    if (!(items[0] instanceof Label))     throw new UiException("String_Node_Str" + items[0]);
    final Label lbl=((Label)items[0]);
    lbl.setAttribute(BinderImpl.VAR,varnm);
    addItemReference(owner,lbl,index,varnm);
    lbl.setAttribute(itervarnm,iterStatus);
    addTemplateTracking(owner,lbl,data,index,size);
    Events.sendEvent(new Event(BinderImpl.ON_BIND_INIT,lbl));
    lbl.detach();
    return lbl.getValue();
  }
}