1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-b-12.js b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-b-12.js
new file mode 100644
index 0000000000..5474b0e6f8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-b-12.js
@@ -0,0 +1,37 @@
+// 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
+es5id: 15.4.4.20-9-b-12
+description: >
+    Array.prototype.filter - deleting own property with prototype
+    property causes prototype index property to be visited on an
+    Array-like object
+---*/
+
+function callbackfn(val, idx, obj) {
+  return true;
+}
+var obj = {
+  0: 0,
+  1: 111,
+  2: 2,
+  length: 10
+};
+
+Object.defineProperty(obj, "0", {
+  get: function() {
+    delete obj[1];
+    return 0;
+  },
+  configurable: true
+});
+
+Object.prototype[1] = 1;
+var newArr = Array.prototype.filter.call(obj, callbackfn);
+
+assert.sameValue(newArr.length, 3, 'newArr.length');
+assert.sameValue(newArr[1], 1, 'newArr[1]');
+
+reportCompare(0, 0);