1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-b-28.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-b-28.js
new file mode 100644
index 0000000000..c382d3c049
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-b-28.js
@@ -0,0 +1,39 @@
+// 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.reduce
+description: >
+    Array.prototype.reduce - decreasing length of array with prototype
+    property causes prototype index property to be visited
+---*/
+
+var testResult = false;
+
+function callbackfn(accum, val, idx, obj) {
+  if (idx === 2 && val === "prototype") {
+    testResult = true;
+  }
+}
+var arr = [0, 1, 2, 3];
+
+Object.defineProperty(Array.prototype, "2", {
+  get: function() {
+    return "prototype";
+  },
+  configurable: true
+});
+
+Object.defineProperty(arr, "0", {
+  get: function() {
+    arr.length = 2;
+    return 1;
+  },
+  configurable: true
+});
+
+arr.reduce(callbackfn, "initialValue");
+
+assert(testResult, 'testResult !== true');
+
+reportCompare(0, 0);