memcpy(values[i], s.data(), s.size());
    p += s.size();
  }
}

#define DEFINE_GETATTR(func, c_type, cpp_type, list_field)                   \
  void func(TF_Operation* oper, const char* attr_name, c_type* value,        \
            TF_Status* status) {                                             \
    cpp_type v;                                                              \