diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-469044.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-469044.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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 = 469044;
+var summary = 'type unstable globals';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  expect = '---000---000';
+  actual = '';
+
+  for (var i = 0; i < 2; ++i) {
+    for (var e = 0; e < 2; ++e) {
+    }
+    var c = void 0;
+    print(actual += "---");
+    for (var a = 0; a < 3; ++a) {
+      c <<= c;
+      print(actual += "" + c);
+    }
+  }
+  reportCompare(expect, actual, summary + ': 1');
+
+  expect = '00000000';
+  actual = '';
+
+  print("");
+  for (var i = 0; i < 2; ++i) {
+    for (var e = 0; e < 2; ++e) {
+    }
+    var c = void 0;
+    for (var a = 0; a < 3; ++a) {
+      c <<= c;
+      print(actual += "" + c);
+    }
+    print(actual += c);
+  }
+  reportCompare(expect, actual, summary + ': 2');
+
+  actual = '';
+  print("");
+
+  for (var i = 0; i < 2; ++i) {
+    for (var e = 0; e < 2; ++e) {
+    }
+    var c = void 0;
+    for (var a = 0; a < 3; ++a) {
+      c <<= c;
+      Math;
+      print(actual += "" + c);
+    }
+    print(actual += c);
+  }  
+  reportCompare(expect, actual, summary + ': 3');
+
+  exitFunc ('test');
+}