diff -r 8e3cb3c46ae8 -r 53b8b8c30086 jdk/src/share/classes/java/util/stream/AbstractTask.java
--- a/jdk/src/share/classes/java/util/stream/AbstractTask.java	Tue Jun 11 13:41:38 2013 -0700
+++ b/jdk/src/share/classes/java/util/stream/AbstractTask.java	Fri Jun 28 10:29:21 2013 +0200
@@ -316,6 +316,7 @@
             else {
                 K l = task.leftChild = task.makeChild(split);
                 K r = task.rightChild = task.makeChild(task.spliterator);
+                task.spliterator = null;
                 task.setPendingCount(1);
                 l.fork();
                 task = r;