repl crash ClassNotFoundException: ValueOf

[bishabosha]

Compiler version

3.2.2

Minimized code

scala> summon[ValueOf["a"]]
Exception in thread "main" java.lang.ClassNotFoundException: ValueOf
	at dotty.tools.repl.AbstractFileClassLoader.findClass(AbstractFileClassLoader.scala:51)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	at dotty.tools.repl.AbstractFileClassLoader.loadClass(AbstractFileClassLoader.scala:57)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Class.java:467)
	at dotty.tools.repl.Rendering.rewrapValueClass(Rendering.scala:135)
	at dotty.tools.repl.Rendering.$anonfun$4(Rendering.scala:114)
	at scala.Option.flatMap(Option.scala:283)
	at dotty.tools.repl.Rendering.valueOf(Rendering.scala:114)
	at dotty.tools.repl.Rendering.renderVal(Rendering.scala:157)
	at dotty.tools.repl.ReplDriver.$anonfun$7(ReplDriver.scala:365)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
	at scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
	at scala.collection.immutable.List.foreach(List.scala:333)
	at dotty.tools.repl.ReplDriver.extractAndFormatMembers$1(ReplDriver.scala:371)
	at dotty.tools.repl.ReplDriver.renderDefinitions$$anonfun$2(ReplDriver.scala:403)
	at scala.Option.map(Option.scala:242)
	at dotty.tools.repl.ReplDriver.renderDefinitions(ReplDriver.scala:409)
	at dotty.tools.repl.ReplDriver.compile$$anonfun$2(ReplDriver.scala:307)
	at scala.util.Either.fold(Either.scala:189)
	at dotty.tools.repl.ReplDriver.compile(ReplDriver.scala:323)
	at dotty.tools.repl.ReplDriver.interpret(ReplDriver.scala:248)
	at dotty.tools.repl.ReplDriver.loop$1(ReplDriver.scala:168)
	at dotty.tools.repl.ReplDriver.runUntilQuit$$anonfun$1(ReplDriver.scala:171)
	at dotty.tools.repl.ReplDriver.withRedirectedOutput(ReplDriver.scala:191)
	at dotty.tools.repl.ReplDriver.runBody$$anonfun$1(ReplDriver.scala:179)
	at dotty.tools.runner.ScalaClassLoader$.asContext(ScalaClassLoader.scala:80)
	at dotty.tools.repl.ReplDriver.runBody(ReplDriver.scala:179)
	at dotty.tools.repl.ReplDriver.runUntilQuit(ReplDriver.scala:171)
	at dotty.tools.repl.ReplDriver.tryRunning(ReplDriver.scala:133)
	at dotty.tools.repl.Main$.main(Main.scala:7)
	at dotty.tools.repl.Main.main(Main.scala)

[bishabosha]

found a much simpler crasher:

scala> summon[ValueOf["a"]]

[scala-center-bot]

This issue was picked for the Issue Spree No. 29 of 18 April 2023 which takes place in a week from now. @SethTisue, @Sporarum, @Decel, @gagandeepkalra will be working on it. If you have any insight into the issue or guidance on how to fix it, please leave it here.

[SethTisue]

I can't make the spree this week after all :-(

[Sporarum]

I was not able to replicate this issue on main (6980b2e):

scala> summon[ValueOf["a"]]
val res0: ValueOf["a"] = scala.ValueOf@61

[dwijnand]

Ah, right, ValueOf is a value class, so this is fixed by #16393.

[mbovel]

Thanks a lot @Sporarum.

Instead of this issue, @Sporarum, @Decel, @gagandeepkalra and @jan-pieter will work on #12460 during today's issue spree.