1 files changed, 27 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-b-1.js b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-b-1.js
new file mode 100644
index 0000000000..dce5fdae23
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/filter/15.4.4.20-9-b-1.js
@@ -0,0 +1,27 @@
+// 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: 15.4.4.20-9-b-1
+description: >
+    Array.prototype.filter - callbackfn not called for indexes never
+    been assigned values
+---*/
+
+var callCnt = 0;
+
+function callbackfn(val, idx, obj)
+{
+  callCnt++;
+  return false;
+}
+
+var srcArr = new Array(10);
+srcArr[1] = undefined; //explicitly assigning a value
+var resArr = srcArr.filter(callbackfn);
+
+assert.sameValue(resArr.length, 0, 'resArr.length');
+assert.sameValue(callCnt, 1, 'callCnt');
+
+reportCompare(0, 0);