diff -r 000000000000 -r 6474c204b198 xpcom/build/PoisonIOInterposerStub.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xpcom/build/PoisonIOInterposerStub.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 ci et: */
+/* 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/. */
+
+#include <stdio.h>
+
+extern "C" {
+
+  void MozillaRegisterDebugFD(int fd) {}
+  void MozillaRegisterDebugFILE(FILE *f) {}
+  void MozillaUnRegisterDebugFD(int fd) {}
+  void MozillaUnRegisterDebugFILE(FILE *f) {}
+
+}
\ No newline at end of file