[sent to both email list given it's not clear if it's an implementation issue or a spec issue]
There is a nice video of how the serialization of records works recently on inside.java https://inside.java/2021/02/23/records-met-serialization/ In the video, Julia explains that the de-serialization works from bottom-up, so what if the record instances are a linked list ... answer: a stack overflow. Here is a small reproducer. import static java.util.stream.IntStream.range; public class RecordSerializationFailure { record Link(Object value, Link next) implements Serializable {} public static void main(String[] args) throws IOException, ClassNotFoundException { var link = range(0, 1_000_000) .boxed() .<Link>reduce(null, (next, i) -> new Link(i, next), (_1, _2) -> null); var path = Path.of("serial.data"); try(var output = Files.newOutputStream(path); var oos = new ObjectOutputStream(output)) { oos.writeObject(link); } Link result; try(var input = Files.newInputStream(path); var ois = new ObjectInputStream(input)) { result = (Link) ois.readObject(); } System.out.println(link.equals(result)); } } Should this be fixed or not ? regards, RĂ©mi