1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/every/15.4.4.16-2-4.js b/js/src/tests/test262/built-ins/Array/prototype/every/15.4.4.16-2-4.js
new file mode 100644
index 0000000000..401816a1dd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/every/15.4.4.16-2-4.js
@@ -0,0 +1,28 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-array.prototype.every
+description: >
+    Array.prototype.every - 'length' is own data property that
+    overrides an inherited data property on an Array
+---*/
+
+var arrProtoLen = 0;
+
+function callbackfn1(val, idx, obj) {
+  return val > 10;
+}
+
+function callbackfn2(val, idx, obj) {
+  return val > 11;
+}
+
+arrProtoLen = Array.prototype.length;
+Array.prototype.length = 0;
+Array.prototype[2] = 9;
+
+assert([12, 11].every(callbackfn1), '[12, 11].every(callbackfn1) !== true');
+assert.sameValue([12, 11].every(callbackfn2), false, '[12, 11].every(callbackfn2)');
+
+reportCompare(0, 0);