Serialization of a simple case class with type synonyms hangs indefinitely

[raimohanska]

At least for me, this code never completes:

object FailingSerialization extends App {
  implicit val jsonFormats = new DefaultFormats {}
  println("Trying to serialize...")
  println(org.json4s.jackson.Serialization.write(Thing(Some(1))))
}

object Thing {
  type Id = Int
}
case class Thing(id: Option[Thing.Id])

If I remove the type Id = Int synonym and use Int directly in the Thing class, it works just fine. Also, if I remove the Option wrapper from the id field, it works.

I'm using json4s-jackson_2.11:3.3.0.RC3.

[dsbos]

#397 seems related.