protected inner Java classes parsed from classfiles lack package boundary #10786
Description
hhoughton:tmp hhoughton$ cat > Test.java
package pkg;
public class Test { protected static class Inner {} }
hhoughton:tmp hhoughton$ javac -d . Test.java
hhoughton:tmp hhoughton$ scala-launch 2.12.4 -cp .
Welcome to Scala 2.12.4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_161).
Type in expressions for evaluation. Or try :help.
scala> :pow
Power mode enabled. :phase is at typer.
import scala.tools.nsc._, intp.global._, definitions._
Try :help or completions for vals._ and power._
scala> typeOf[_root_.pkg.Test].companion.decl(TypeName("Inner")).privateWithin
res0: $r.intp.global.Symbol = <none>
This means that you can't access it in the same package:
hhoughton:tmp hhoughton$ scalac-launch 2.12.4 -cp . Use.scala
Use.scala:3: error: class Inner in object Test cannot be accessed in object pkg.Test
Access to protected class Inner not permitted because
enclosing package pkg is not a subclass of
object Test in package pkg where target is defined
object Use extends Test.Inner
^
one error found
Note that mixed compilation works as expected:
hhoughton:tmp hhoughton$ scalac-launch 2.12.4 Use.scala Test.java
hhoughton:tmp hhoughton$ echo $?
0