1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-c-i-4.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-c-i-4.js
new file mode 100644
index 0000000000..a50f6085f1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-9-c-i-4.js
@@ -0,0 +1,25 @@
+// 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 - element to be retrieved is own data
+    property that overrides an inherited data property on an Array
+---*/
+
+var testResult = false;
+var initialValue = 0;
+
+function callbackfn(prevVal, curVal, idx, obj) {
+  if (idx === 1) {
+    testResult = (curVal === 1);
+  }
+}
+
+Array.prototype[1] = "3";
+[0, 1, 2].reduce(callbackfn, initialValue);
+
+assert(testResult, 'testResult !== true');
+
+reportCompare(0, 0);