public function popTrace()
    {
        if ($this->smarty->debugging) {
            Smarty_Internal_Debug::end_compile($this->template);
        }
        $r = array_pop($this->trace_stack);
        $this->smarty->_current_file = $r[0];
        $this->trace_filepath = $r[1];
        $this->trace_uid = $r[2];
        $this->trace_line_offset = $r[3];
        if ($this->smarty->debugging) {
            Smarty_Internal_Debug::start_compile($this->template);
        }
    }