1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-3.js b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-3.js
new file mode 100644
index 0000000000..b280836efe
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-3.js
@@ -0,0 +1,24 @@
+// 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 - 'length' is own data property that
+    overrides an inherited data property on an Array-like object
+---*/
+
+var proto = {
+  length: 0
+};
+
+var Con = function() {};
+Con.prototype = proto;
+
+var child = new Con();
+child.length = 2;
+child[1] = child;
+
+assert.sameValue(Array.prototype.lastIndexOf.call(child, child), 1, 'Array.prototype.lastIndexOf.call(child, child)');
+
+reportCompare(0, 0);