t7783.scala:1: warning: type D in object O is deprecated:
object O { class C; @deprecated("", "") type D = C; def foo: Seq[D] = Nil }
                                                             ^
t7783.scala:11: warning: type D in object O is deprecated:
  type T = O.D
             ^
t7783.scala:12: warning: type D in object O is deprecated:
  locally(null: O.D)
                  ^
t7783.scala:13: warning: type D in object O is deprecated:
  val x: O.D = null
           ^
t7783.scala:14: warning: type D in object O is deprecated:
  locally(null.asInstanceOf[O.D])
                              ^
error: No warnings can be incurred under -Xfatal-warnings.
5 warnings found
one error found