1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-5.js b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-5.js
new file mode 100644
index 0000000000..342a9b7b38
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-5.js
@@ -0,0 +1,32 @@
+// 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 accessor property on an Array-like object
+---*/
+
+var proto = {};
+Object.defineProperty(proto, "length", {
+  get: function() {
+    return 0;
+  },
+  configurable: true
+});
+
+var Con = function() {};
+Con.prototype = proto;
+
+var child = new Con();
+
+Object.defineProperty(child, "length", {
+  value: 2,
+  configurable: true
+});
+child[1] = null;
+
+assert.sameValue(Array.prototype.lastIndexOf.call(child, null), 1, 'Array.prototype.lastIndexOf.call(child, null)');
+
+reportCompare(0, 0);