CEREAL_REGISTER_TYPE bind T to Archive fail, when father class and son class serialize function is not the same type of function(merber or no merber))

[ldh137]

struct A {
  int a
template <class Archive>
void serialize(Archive &ar) ｛
ar(a);
｝
}


struct B : struct A {
  int b
}

template <class Archive>
void serialize(Archive &ar, B& data) ｛
ar(cereal::base_class<A>(&data)，data.b);
｝
CEREAL_REGISTER_TYPE(B);
CEREAL_REGISTER_POLYMORPHIC_RELATION(ObjectParam, VideoObjectParam);

When the serialization function of A is non_member and the serialization function of B is member OR the serialization function of A is member and the serialization function of B is non_member, bind B to Archive fail.

    template <class T, class InputArchive>
    struct is_input_serializable : std::integral_constant<bool,
      detail::count_input_serializers<T, InputArchive>::value == 1> {};

When I review the source code, I find the serialization function could only be one：detail::count_input_serializers<T, InputArchive>::value == 1

[redchairman]

您的邮件我已收到，谢谢合作！