1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-6-2.js b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-6-2.js
new file mode 100644
index 0000000000..babc443f62
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-6-2.js
@@ -0,0 +1,25 @@
+// 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
+es5id: 15.4.4.20-6-2
+description: >
+    Array.prototype.filter returns an empty array if 'length' is 0
+    (subclassed Array, length overridden to null (type conversion))
+---*/
+
+foo.prototype = new Array(1, 2, 3);
+
+function foo() {}
+var f = new foo();
+f.length = null;
+
+function cb() {}
+var a = f.filter(cb);
+
+
+assert(Array.isArray(a), 'Array.isArray(a) !== true');
+assert.sameValue(a.length, 0, 'a.length');
+
+reportCompare(0, 0);