1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-1-5.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-1-5.js
new file mode 100644
index 0000000000..48c2e67a3f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-1-5.js
@@ -0,0 +1,18 @@
+// 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 applied to number primitive
+---*/
+
+function callbackfn(prevVal, curVal, idx, obj) {
+  return obj instanceof Number;
+}
+
+Number.prototype[0] = 1;
+Number.prototype.length = 1;
+
+assert(Array.prototype.reduce.call(2.5, callbackfn, 1), 'Array.prototype.reduce.call(2.5, callbackfn, 1) !== true');
+
+reportCompare(0, 0);