gistfile1.txt

[:~] $ cat what.scala 
object what {
  object the {
    case object hell
  }

  def main(args: Array[String]): Unit =
    println(what.the.hell.getClass.getSimpleName)
}
[:~] $ scalac what.scala
[:~] $ scala -version
Scala code runner version 2.13.2 -- Copyright 2002-2020, LAMP/EPFL and Lightbend, Inc.
[:~] $ java -version
openjdk version "1.8.0_265"
OpenJDK Runtime Environment (Zulu 8.48.0.53-CA-linux64) (build 1.8.0_265-b11)
OpenJDK 64-Bit Server VM (Zulu 8.48.0.53-CA-linux64) (build 25.265-b11, mixed mode)
[:~] $ scala what
Exception in thread "main" java.lang.InternalError: Malformed class name
	at java.lang.Class.getSimpleName(Class.java:1330)
	at what$.main(what.scala:7)
	at what.main(what.scala)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at scala.reflect.internal.util.ScalaClassLoader.$anonfun$run$2(ScalaClassLoader.scala:105)
	at scala.reflect.internal.util.ScalaClassLoader.asContext(ScalaClassLoader.scala:40)
	at scala.reflect.internal.util.ScalaClassLoader.asContext$(ScalaClassLoader.scala:37)
	at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.asContext(ScalaClassLoader.scala:130)
	at scala.reflect.internal.util.ScalaClassLoader.run(ScalaClassLoader.scala:105)
	at scala.reflect.internal.util.ScalaClassLoader.run$(ScalaClassLoader.scala:97)
	at scala.reflect.internal.util.ScalaClassLoader$URLClassLoader.run(ScalaClassLoader.scala:130)
	at scala.tools.nsc.CommonRunner.run(ObjectRunner.scala:29)
	at scala.tools.nsc.CommonRunner.run$(ObjectRunner.scala:28)
	at scala.tools.nsc.ObjectRunner$.run(ObjectRunner.scala:43)
	at scala.tools.nsc.CommonRunner.runAndCatch(ObjectRunner.scala:35)
	at scala.tools.nsc.CommonRunner.runAndCatch$(ObjectRunner.scala:34)
	at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:70)
	at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:91)
	at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:103)
	at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:108)
	at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)