Array Iterator next should check for own property

test/mjsunit/harmony/array-iterator.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 196 matching lines @@
   for (var i = 0; i < buffer.length - 1; i++) {
     assertEquals(array[i], buffer[i][1]);
   }
   assertTrue(isNaN(buffer[buffer.length - 1][1]));
 
   for (var i = 0; i < buffer.length; i++) {
     assertEquals(i, buffer[i][0]);
   }
 }
 TestForArrayEntries();
+
+
+function TestNonOwnSlots() {
+  var array = [0];
+  var iterator = array.values();
+  var object = {__proto__: iterator};
+
+  assertThrows(function() {
+    object.next();
+  }, TypeError);
+}
+TestNonOwnSlots();