1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-9-4.js b/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-9-4.js
new file mode 100644
index 0000000000..daef7b2fe5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/indexOf/15.4.4.14-9-4.js
@@ -0,0 +1,20 @@
+// 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.indexof
+description: Array.prototype.indexOf must return correct index(undefined)
+---*/
+
+var obj = {
+  toString: function() {
+    return undefined;
+  }
+};
+var _undefined1 = undefined;
+var _undefined2;
+var a = new Array(true, 0, false, null, 1, "undefined", obj, 1, _undefined2, _undefined1, undefined);
+
+assert.sameValue(a.indexOf(undefined), 8, 'a[8]=_undefined2');
+
+reportCompare(0, 0);