ff-update

name	ff-update
description	Update the Firefox mozilla-unified source tree to latest tip. Use before rebuilding Firefox sanitizer builds or starting a fresh audit on current upstream source.

Update Firefox Source

Pull and update targets/firefox to the latest mozilla-unified tip.

Steps

1. Pull and update

hg -R targets/firefox pull -u

2. Handle expected local patch conflicts

If hg pull -u aborts with conflicting changes, inspect the modified files:

hg -R targets/firefox status -mard

The expected local compatibility patches are:

• build/moz.configure/toolchain.configure
• third_party/zucchini/chromium/components/zucchini/suffix_array_unittest.cc

If those are the only modified tracked files, shelve, update, and unshelve:

hg -R targets/firefox shelve --name local-patches
hg -R targets/firefox update
hg -R targets/firefox unshelve --name local-patches

If hg status -mard shows other tracked file changes, or if unshelving reports merge conflicts, stop and report the conflict. Do not force-resolve.

3. Verify the revision

hg -R targets/firefox log -l 1 --template "{node|short} {date|isodate} {desc|firstline}\n"

After Updating

Firefox sanitizer builds are stale after a source update. Use ff-bsan with asan, ubsan, msan, coverage, or all to rebuild the needed configurations.