Internal error when trying to use "Project language level - Experimental features" - Not a compile error

Hi

I'm using Project language level - Experimental features
JDK buit from http://openjdk.java.net/projects/valhalla/

When trying to compile, I got this error message:

Error:Internal error: (java.lang.IllegalArgumentException) No enum constant org.jetbrains.jps.model.java.LanguageLevel.JDK_X

java.lang.IllegalArgumentException: No enum constant org.jetbrains.jps.model.java.LanguageLevel.JDK_X

 at java.lang.Enum.valueOf(Enum.java:240)

 at org.jetbrains.jps.model.java.LanguageLevel.valueOf(LanguageLevel.java:23)

 at org.jetbrains.jps.model.serialization.java.JpsJavaModelSerializerExtension$JavaProjectExtensionSerializer.loadExtension(JpsJavaModelSerializerExtension.java:288)

 at org.jetbrains.jps.model.serialization.java.JpsJavaModelSerializerExtension$JavaProjectExtensionSerializer.loadExtension(JpsJavaModelSerializerExtension.java:271)

 at org.jetbrains.jps.model.serialization.JpsLoaderBase.loadComponents(JpsLoaderBase.java:61)

 at org.jetbrains.jps.model.serialization.JpsProjectLoader.loadFromDirectory(JpsProjectLoader.java:121)

 at org.jetbrains.jps.model.serialization.JpsProjectLoader.loadProject(JpsProjectLoader.java:100)

 at org.jetbrains.jps.model.serialization.impl.JpsSerializationManagerImpl.loadModel(JpsSerializationManagerImpl.java:41)

 at org.jetbrains.jps.cmdline.JpsModelLoaderImpl.loadModel(JpsModelLoaderImpl.java:45)

 at org.jetbrains.jps.cmdline.BuildRunner.load(BuildRunner.java:78)

 at org.jetbrains.jps.cmdline.BuildSession.runBuild(BuildSession.java:266)

 at org.jetbrains.jps.cmdline.BuildSession.run(BuildSession.java:125)

 at org.jetbrains.jps.cmdline.BuildMain$MyMessageHandler$1.run(BuildMain.java:232)

 at org.jetbrains.jps.service.impl.SharedThreadPoolImpl$1.run(SharedThreadPoolImpl.java:42)

 at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

 at java.util.concurrent.FutureTask.run(FutureTask.java:265)

 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

 at java.lang.Thread.run(Thread.java:745)


I;m not expecting IntellIj to support valhalla (which it does quite nice) - just to be able to invoke the compiler.

Thx
Boaz