Exception when compiling with Scala 3 #585
Description
I have a quite large closed source project which I am gradually migrating to Scala 3. I get exception when compiling with Scala 3 with some of my decoders. The exception is:
Exception occurred while executing macro expansion.
java.lang.ClassCastException: class dotty.tools.dotc.ast.Trees$This cannot be cast to class dotty.tools.dotc.ast.Trees$RefTree (dotty.tools.dotc.ast.Trees$This and dotty.tools.dotc.ast.Trees$RefTree are in unnamed module of loader java.net.URLClassLoader @4c15b562)
implicit val decoder: Decoder[V3] = deriveDecoder
I might be able to create a short repro later, but I am not sure if / when, as Scala 3 is not a priority task for me yet.