`export a.*` in classes extending `AnyVal` causes runtime errors

[coreywoodfield]

Compiler version

3.3.7, 3.8.3

Minimized code

class Foo(private val a: String) extends AnyVal {
  export a.*
}

new Foo("bar")

Output

Running this code produces the following error

java.lang.IncompatibleClassChangeError: class Playground$Foo overrides final method java.lang.Object.wait()V
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
	at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427)
	at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
	at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420)
	at sbt.internal.ManagedClassLoader.findClass(ManagedClassLoader.java:103)
	at sbt.internal.BottomClassLoader.lambda$findClass$0(BottomClassLoader.java:57)
	at sbt.internal.ClassLoadingLock.withLock(ClassLoadingLock.java:30)
	at sbt.internal.BottomClassLoader.findClass(BottomClassLoader.java:52)
	at sbt.internal.BottomClassLoader.loadClass(BottomClassLoader.java:67)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
	at Playground$.<clinit>(main.scala:10)
	at Main$.<clinit>(main.scala:17)
	at Main.main(main.scala)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at sbt.Run.invokeMain(Run.scala:144)
	at sbt.Run.execute$1(Run.scala:94)
	at sbt.Run.$anonfun$runWithLoader$5(Run.scala:121)
	at sbt.Run$.executeSuccess(Run.scala:187)
	at sbt.Run.runWithLoader(Run.scala:121)
	at sbt.Run.run(Run.scala:128)
	at org.scastie.sbtplugin.SbtScastiePlugin$$anon$1.$anonfun$run$1(SbtScastiePlugin.scala:37)
	at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
	at sbt.util.InterfaceUtil$$anon$1.get(InterfaceUtil.scala:32)
	at sbt.ScastieTrapExit$App.run(ScastieTrapExit.scala:258)
	at java.base/java.lang.Thread.run(Thread.java:840)

Expectation

I would expect this to not fail at runtime if it compiles successfully. Either the compiler should not export final methods from Object in classes that extend AnyVal, or it should fail with a compilation error when that is attempted