1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-2-4.js b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-2-4.js
new file mode 100644
index 0000000000..33c1bf0fc5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-2-4.js
@@ -0,0 +1,23 @@
+// 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.filter
+description: >
+    Array.prototype.filter - 'length' is own data property that
+    overrides an inherited data property on an Array
+---*/
+
+var arrProtoLen;
+
+function callbackfn(val, idx, obj) {
+  return obj.length === 2;
+}
+
+arrProtoLen = Array.prototype.length;
+Array.prototype.length = 0;
+var newArr = [12, 11].filter(callbackfn);
+
+assert.sameValue(newArr.length, 2, 'newArr.length');
+
+reportCompare(0, 0);