Fixed logic error reported in #2159.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/library/scala/collection/generic/SequenceTemplate.scala b/src/library/scala/collection/generic/SequenceTemplate.scala
index 8e54e399eb..b9a398b68c 100644
--- a/src/library/scala/collection/generic/SequenceTemplate.scala
+++ b/src/library/scala/collection/generic/SequenceTemplate.scala
@@ -506,7 +506,10 @@ trait SequenceTemplate[+A, +This <: IterableTemplate[A, This] with Sequence[A]]
   def equalsWith[B](that: Sequence[B])(f: (A,B) => Boolean): Boolean = {
     val i = this.iterator
     val j = that.iterator
-    while (i.hasNext && j.hasNext && f(i.next, j.next)) ()
+    while (i.hasNext && j.hasNext)
+      if (!f(i.next, j.next))
+        return false
+
     !i.hasNext && !j.hasNext
   }