https://bz.mercurial-scm.org/show_bug.cgi?id=5581
Bug ID: 5581
Summary: fsmonitor can race with itself if another process
invokes hg status while wlock is held
Product: Mercurial
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: bug
Priority: wish
Component: fsmonitor
Assignee: bugzi...@mercurial-scm.org
Reporter: s...@fb.com
CC: mercurial-devel@mercurial-scm.org
$ cat >> $HGRCPATH << EOF
> [extensions]
> fsmonitor =
> rebase =
> EOF
$ hg init repo
$ cd repo
$ echo c0 >> a
$ echo c0 >> b
$ hg add a b
$ hg ci -m c0
$ echo c1 >> a
$ hg ci -m c1
$ hg up .^
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo c2 >> a
$ echo c2 >> b
$ hg ci -m c2
created new head
Merge tool that runs status in between, triggering the race.
$ cat >> $TESTTMP/mergetool.sh << EOF
> echo "custom merge tool"
> printf "c0\nc1\nc2\n" > \$1
> hg --cwd $TESTTMP/repo status
> EOF
$ cat >> $HGRCPATH << EOF
> [merge-tools]
> test.executable=sh
> test.args=$TESTTMP/mergetool.sh \$output
> EOF
$ hg rebase -s . -d 1 --tool test
$ hg log -p --debug
$ hg status
That last 'hg status' should be empty, but it returns 'M b'.
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