Inconsistent handling of shadowed imported name

[scabug]

Create the following source files:

A.scala:
package a
object Foo

B.scala:
package b
import a.Foo
class Foo

Then run

scalac -d ./classes A.scala B.scala

The compilation succeeds.

But if I compile A and B separately:

scalac -d ./classes1 A.scala
scalac -d ./classes2 -cp ./classes1 B.scala

I get "warning: imported `Foo' is permanently hidden by definition of class Foo in package b".

I also get this error if I replace "object Foo" with "class Foo" in A.scala.

I guess this is supposed to succeed, since objects are values, not types, and so live in a different namespaces? But in that case it should also succeed when the files are compiled separately.

[scabug]

Imported From: https://issues.scala-lang.org/browse/SI-8121?orig=1
Reporter: Benjy Weinberger (benjyw)
Affected Versions: 2.10.2

[scabug]

@som-snytt said:
This is probably obvious to those who have looked at separate compilation, but under separate compilation you see the companion class a.Foo with static forwarders; that is the basis for the warning. I'm not sure about the use case where there is nothing to forward.