--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/arrays/ArrayData.java	Wed Jul 05 20:02:40 2017 +0200
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/arrays/ArrayData.java	Fri Sep 26 18:47:20 2014 +0200
@@ -536,7 +536,7 @@
         final Class<?>  widest  = widestType(items);
 
         ArrayData newData = convert(widest);
-        long      pos     = newData.length();
+        long      pos     = newData.length;
         for (final Object item : items) {
             newData = newData.ensure(pos); //avoid sparse array
             newData.set((int)pos++, item, strict);