1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/regress-315509-02.js b/js/src/tests/non262/extensions/regress-315509-02.js
new file mode 100644
index 0000000000..40e64b7ea4
--- /dev/null
+++ b/js/src/tests/non262/extensions/regress-315509-02.js
@@ -0,0 +1,42 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 315509;
+var summary = 'Array.prototype.unshift do not crash on Arrays with holes';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+function x1() {
+  var a = new Array(1);
+  a.unshift(1);
+}
+function x2() {
+  var a = new Array(1);
+  a.unshift.call(a, 1);
+}
+function x3() {
+  var a = new Array(1);
+  a.x = a.unshift;
+  a.x(1);
+}
+function x4() {
+  var a = new Array(1);
+  a.__defineSetter__("x", a.unshift);
+  a.x = 1;
+}
+
+for (var i = 0; i < 10; i++)
+{
+  x1();
+  x2();
+  x3();
+  x4();
+}
+ 
+reportCompare(expect, actual, summary);