1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-1-12.js b/js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-1-12.js
new file mode 100644
index 0000000000..6be9132c57
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduceRight/15.4.4.22-1-12.js
@@ -0,0 +1,22 @@
+// 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.reduceright
+description: Array.prototype.reduceRight applied to RegExp object
+---*/
+
+var obj = new RegExp();
+obj.length = 1;
+obj[0] = 1;
+var accessed = false;
+
+function callbackfn(prevVal, curVal, idx, o) {
+  accessed = true;
+  return o instanceof RegExp;
+}
+
+assert(Array.prototype.reduceRight.call(obj, callbackfn, 1), 'Array.prototype.reduceRight.call(obj, callbackfn, 1) !== true');
+assert(accessed, 'accessed !== true');
+
+reportCompare(0, 0);