diff -r 000000000000 -r 6474c204b198 js/xpconnect/shell/xpcshell.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/xpconnect/shell/xpcshell.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=4 et sw=4 tw=99: */
+/* 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/. */
+
+/* XPConnect JavaScript interactive shell. */
+
+#include <stdio.h>
+
+#include "mozilla/WindowsDllBlocklist.h"
+
+#include "nsXULAppAPI.h"
+#ifdef XP_MACOSX
+#include "xpcshellMacUtils.h"
+#endif
+#ifdef XP_WIN
+#include <windows.h>
+#include <shlobj.h>
+
+// we want a wmain entry point
+#define XRE_DONT_PROTECT_DLL_LOAD
+#define XRE_WANT_ENVIRON
+#include "nsWindowsWMain.cpp"
+#endif
+
+int
+main(int argc, char** argv, char** envp)
+{
+#ifdef XP_MACOSX
+    InitAutoreleasePool();
+#endif
+
+    // unbuffer stdout so that output is in the correct order; note that stderr
+    // is unbuffered by default
+    setbuf(stdout, 0);
+
+#ifdef HAS_DLL_BLOCKLIST
+    DllBlocklist_Initialize();
+#endif
+
+    int result = XRE_XPCShellMain(argc, argv, envp);
+
+#ifdef XP_MACOSX
+    FinishAutoreleasePool();
+#endif
+
+    return result;
+}