Issue with maven build: ReificationSupport fails

[david-bouyssie]

Hi there,

I have an issue with a maven build (net.alchim31.maven : scala-maven-plugin) leading to this error:

 exception during macro expansion:
java.lang.IllegalArgumentException: can't flatten val x = Seq.newBuilder[Long]
        at scala.reflect.internal.ReificationSupport$ReificationSupportImpl.toStats(ReificationSupport.scala:100)

The case class I want to deserialize is like this:
case class Task(projectId: Long, jobIds: Seq[Long])

I don't have any issue with my SBT build.

[plokhotnyuk]

@david-bouyssie David, thanks for the bug report!
For which version of Scala the compilation error was thrown?
Do you have the ability to prepare some minimal project which reproduces it?

I've found similar errors in bug reports for scalac: scala/bug#8609
I'm going to find some workaround but need to reproduce the error first.

[david-bouyssie]

Sorry I missed that information.
Used Scala Version is 2.11.11

So might be a scalac issue?

I can try to make a sample project.

[david-bouyssie]

This is really weird, I can't reproduce it in a simple Sandbox.
I hope I can isolate the problem but it may take some time.

[plokhotnyuk]

@plokhotnyuk David, could you please build SNAPSHOT verison for changes in the following PR and check if they work for you: #692

[david-bouyssie]

Oh nice, you find a workaround!
Yes I'll do that later.

[david-bouyssie]

It looks good to me with this fix.

Thanks a lot!

[plokhotnyuk]

@david-bouyssie Thank you too for your help and support!

Please peek the v2.7.2 release with the fix.

[david-bouyssie]

Amazing, thanks again for your reactivity!