Confusion regarding working of protected[some_scope] and inheritance in scala - scala

Question

This question is about protected scope of scala. Following code runs perfectly.
//In firstfile.scala
package A{
class test{
protected[test] var a=0
}
}
package B{
class test1 extends A.test{
println(a)
}
}
But when I put package B in some other file,then compilation fails saying not found value a
// In secondfile.scala
import A.test
package B{
class test1 extends test{
println(a)
}
}
I am running this code in intellij.
what can be the reason of this? Are not the two codes same?

Answer 1

I think you've found a bug. I can reproduce it in Eclipse with Scala IDE 2.0.0-beta9 with Scala 2.9.0-1. First, let's create Foo.scala:
package a
class Foo {
protected[Foo] var x = 0
}
and then Bar.scala:
package b
class Bar extends a.Foo {
println(x) // Error: Not found: value x
}
Eclipse telling us, there is an error. But after cleaning a project this error disappears. And I checked, with scalac everything compiles with first attempt (who would doubt).
Update:
I've opened a ticket #1000567 on Scala IDE bugtracker regarding this issue.