1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-10-3.js b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-10-3.js
new file mode 100644
index 0000000000..ea732a2775
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-10-3.js
@@ -0,0 +1,24 @@
+// 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.filter
+description: Array.prototype.filter - subclassed array when length is reduced
+---*/
+
+foo.prototype = new Array(1, 2, 3);
+
+function foo() {}
+var f = new foo();
+f.length = 1;
+
+function cb() {
+  return true;
+}
+var a = f.filter(cb);
+
+
+assert(Array.isArray(a), 'Array.isArray(a) !== true');
+assert.sameValue(a.length, 1, 'a.length');
+
+reportCompare(0, 0);