1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-6.js b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-6.js
new file mode 100644
index 0000000000..6dcade2541
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-6.js
@@ -0,0 +1,19 @@
+// 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.lastindexof
+description: Array.prototype.lastIndexOf must return correct index(null)
+---*/
+
+var obj = {
+  toString: function() {
+    return null
+  }
+};
+var _null = null;
+var a = new Array(true, undefined, 0, false, null, 1, "str", 0, 1, null, true, false, undefined, _null, "null", undefined, "str", obj);
+
+assert.sameValue(a.lastIndexOf(null), 13, 'a.lastIndexOf(null)');
+
+reportCompare(0, 0);