1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-b-14.js b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-b-14.js
new file mode 100644
index 0000000000..af2a27140b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-b-14.js
@@ -0,0 +1,29 @@
+// 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.map
+description: >
+    Array.prototype.map - decreasing length of array causes index
+    property not to be visited
+---*/
+
+function callbackfn(val, idx, obj) {
+  return idx === 3 && typeof val === "undefined";
+}
+
+var arr = [0, 1, 2, "last"];
+
+Object.defineProperty(arr, "0", {
+  get: function() {
+    arr.length = 3;
+    return 0;
+  },
+  configurable: true
+});
+
+var testResult = arr.map(callbackfn);
+
+assert.sameValue(typeof testResult[3], "undefined", 'typeof testResult[3]');
+
+reportCompare(0, 0);