diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_7/extensions/regress-346773.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_7/extensions/regress-346773.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+/* -*- 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 = 346773;
+var summary = 'Do not crash compiling with misplaced brances in function';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  try
+  {
+    var src =
+      '    var it = {foo:"5"};' +
+      '    it.__iterator__ =' +
+      '      function(valsOnly)' +
+      '      {' +
+      '        var gen =' +
+      '        function()' +
+      '        {' +
+      '          for (var i = 0; i < keys.length; i++)' +
+      '          {' +
+      '            if (valsOnly)' +
+      '              yield vals[i];' +
+      '            else' +
+      '              yield [keys[i], vals[i]];' +
+      '          }' +
+      '          return gen();' +
+      '        }' +
+      '      }';
+    eval(src);
+  }
+  catch(ex)
+  {
+  }
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}