--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mozilla-bmo1634646.patch Thu Jun 11 22:04:26 2020 +0200
@@ -0,0 +1,26 @@
+# HG changeset patch
+# User Wolfgang Rosenauer <wr@rosenauer.org>
+# Parent 43820d9e289abee98a2e3cdb4314848de3bc8622
+
+diff --git a/build/pgo/profileserver.py b/build/pgo/profileserver.py
+--- a/build/pgo/profileserver.py
++++ b/build/pgo/profileserver.py
+@@ -127,17 +127,17 @@ if __name__ == '__main__':
+ # Bug 1553850 considers fixing this.
+ env["MOZ_DISABLE_CONTENT_SANDBOX"] = "1"
+ env["MOZ_DISABLE_RDD_SANDBOX"] = "1"
+
+ # Ensure different pids write to different files
+ env["LLVM_PROFILE_FILE"] = "default_%p_random_%m.profraw"
+
+ # Write to an output file if we're running in automation
+- process_args = {}
++ process_args = {'universal_newlines': True}
+ if 'UPLOAD_PATH' in env:
+ process_args['logfile'] = os.path.join(env['UPLOAD_PATH'], 'profile-run-1.log')
+
+ # Run Firefox a first time to initialize its profile
+ runner = FirefoxRunner(profile=profile,
+ binary=binary,
+ cmdargs=['data:text/html,<script>Quitter.quit()</script>'],
+ env=env,