1 files changed, 22 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-10-7.js b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-10-7.js
new file mode 100644
index 0000000000..3e3e1b039e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/reduce/15.4.4.21-10-7.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 - subclassed array with length 1 and
+    initialvalue provided
+---*/
+
+foo.prototype = [1];
+
+function foo() {}
+var f = new foo();
+
+function cb(prevVal, curVal, idx, obj) {
+  return prevVal + curVal;
+}
+
+assert.sameValue(f.reduce(cb, -1), 0, 'f.reduce(cb,-1)');
+
+reportCompare(0, 0);