Problem with inner classes of a generic class

[AtomBaf]

given this snippet class :

import java.io.IOException;
import java.io.OutputStream;

import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.io.Output;

public class b<T> {

    class D {
    }

    T t;
    D d = new D();

    public static void main(String[] args) throws Exception {

        Kryo kryo = new Kryo();
        Output output = new Output(new OutputStream() {
            @Override
            public void write(int b) throws IOException {
            }
        });

        kryo.writeObject(output, new b());
        output.close();

    }
}

we obtain a

Caused by: java.lang.ArrayIndexOutOfBoundsException: 0
    at com.esotericsoftware.kryo.serializers.FieldSerializerGenericsUtil.newCachedFieldOfGenericType(FieldSerializerGenericsUtil.java:199)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.newCachedField(FieldSerializer.java:279)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.createCachedFields(FieldSerializer.java:243)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.rebuildCachedFields(FieldSerializer.java:188)
    at com.esotericsoftware.kryo.serializers.FieldSerializer.<init>(FieldSerializer.java:109)

So it seems that in FieldSerializerGenericsUtil.java:198 a chekc on the fieldGenerics length should be done