Merge pull request #4781 from pauldraper/pauldraper-future-sequence-2.11

Avoid using ExecutionContext for Future.sequence of empty collection

1 files changed, 1 insertions, 1 deletions

diff --git a/src/library/scala/concurrent/Future.scala b/src/library/scala/concurrent/Future.scala
index 914646320c..294ca2aa48 100644
--- a/src/library/scala/concurrent/Future.scala
+++ b/src/library/scala/concurrent/Future.scala
@@ -497,7 +497,7 @@ object Future {
   def sequence[A, M[X] <: TraversableOnce[X]](in: M[Future[A]])(implicit cbf: CanBuildFrom[M[Future[A]], A, M[A]], executor: ExecutionContext): Future[M[A]] = {
     in.foldLeft(successful(cbf(in))) {
       (fr, fa) => for (r <- fr; a <- fa) yield (r += a)
-    } map (_.result())
+    }.map(_.result())(InternalCallbackExecutor)
   }
 
   /** Returns a new `Future` to the result of the first future in the list that is completed.