Bar.java
package example;
import example.Foo$;
public class Bar {
// this compiles in Scala 2.x, but won't compile in Scala 3
private static final Foo$ MOD = Foo$.MODULE$;
}
package example
case class Foo(i: Int)
object Foo
run +compile
and it compiles in Scala 2.x, but won't compile in Scala 3.