1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/regress-437288-01.js b/js/src/tests/non262/extensions/regress-437288-01.js
new file mode 100644
index 0000000000..725554dd52
--- /dev/null
+++ b/js/src/tests/non262/extensions/regress-437288-01.js
@@ -0,0 +1,32 @@
+/* -*- 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 = 437288;
+var summary = 'for loop turning into a while loop';
+var actual = 'No Hang';
+var expect = 'No Hang';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  try
+  {
+    eval('(function() { const x = 1; for (x in null); })();');
+  }
+  catch(ex)
+  {
+    actual = ex + '';
+  }
+
+  reportCompare(expect, actual, summary);
+}