1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-b-25.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-b-25.js
new file mode 100644
index 0000000000..7d5a359b7b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-b-25.js
@@ -0,0 +1,40 @@
+// 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 - deleting own property with prototype
+    property causes prototype index property to be visited on an
+    Array-like object
+---*/
+
+var testResult = false;
+
+function callbackfn(accum, val, idx, obj) {
+  if (idx === 1 && val === 1) {
+    testResult = true;
+  }
+}
+
+var obj = {
+  0: 0,
+  1: 111,
+  4: 10,
+  length: 10
+};
+
+Object.defineProperty(obj, "0", {
+  get: function() {
+    delete obj[1];
+    return 0;
+  },
+  configurable: true
+});
+
+Object.prototype[1] = 1;
+Array.prototype.reduce.call(obj, callbackfn, "initialValue");
+
+assert(testResult, 'testResult !== true');
+
+reportCompare(0, 0);