1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-8-c-2.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-8-c-2.js
new file mode 100644
index 0000000000..f16665bf36
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-8-c-2.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.reduce
+description: >
+    Array.prototype.reduce throws TypeError when elements assigned
+    values are deleted by reducing array length and initialValue is
+    not present
+---*/
+
+function callbackfn(prevVal, curVal, idx, obj)
+{}
+
+var arr = new Array(10);
+arr[9] = 1;
+arr.length = 5;
+assert.throws(TypeError, function() {
+  arr.reduce(callbackfn);
+});
+
+reportCompare(0, 0);