Fixes SI-6271 - Missing isEmpty override for views.

GenIterableView didn't override isEmpty for views to look at *filtered* iterator, but was instead pulling
unfiltered iterator and causing issues.   Chalk up another bizzare bug to lack of insight/visibility into
linearization and what havoc overriding new methods can spew on our library.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/library/scala/collection/GenIterableViewLike.scala b/src/library/scala/collection/GenIterableViewLike.scala
index 9e3927eaf4..142561df20 100644
--- a/src/library/scala/collection/GenIterableViewLike.scala
+++ b/src/library/scala/collection/GenIterableViewLike.scala
@@ -25,6 +25,7 @@ self =>
     def iterator: Iterator[B]
     override def foreach[U](f: B => U): Unit = iterator foreach f
     override def toString = viewToString
+    override def isEmpty = !iterator.hasNext
   }
 
   trait EmptyView extends Transformed[Nothing] with super.EmptyView {