1 files changed, 34 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-9.js b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-9.js
new file mode 100644
index 0000000000..96f92f7287
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/map/15.4.4.19-8-9.js
@@ -0,0 +1,34 @@
+// 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 - modifications to length don't change number
+    of iterations on an Array
+---*/
+
+var called = 0;
+
+function callbackfn(val, idx, obj) {
+  called += 1;
+  return val > 10;
+}
+
+var arr = [9, , 12];
+
+Object.defineProperty(arr, "1", {
+  get: function() {
+    arr.length = 2;
+    return 8;
+  },
+  configurable: true
+});
+
+var testResult = arr.map(callbackfn);
+
+assert.sameValue(testResult.length, 3, 'testResult.length');
+assert.sameValue(called, 2, 'called');
+assert.sameValue(typeof testResult[2], "undefined", 'typeof testResult[2]');
+
+reportCompare(0, 0);