[Bug 5042] New: corrupted hiddencache crash Mercurial

[mercurial-bugs at selenic.com]

https://bz.mercurial-scm.org/show_bug.cgi?id=5042

            Bug ID: 5042
           Summary: corrupted hiddencache crash Mercurial
           Product: Mercurial
           Version: default branch
          Hardware: PC
                OS: Linux
            Status: UNCONFIRMED
          Severity: bug
          Priority: wish
         Component: Mercurial
          Assignee: bugzilla at selenic.com
          Reporter: pierre-yves.david at ens-lyon.org
                CC: mercurial-devel at selenic.com

cf traceback below


> hg st --debug --traceback
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 189, in
_runcatch
    return _dispatch(req)
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 914, in
_dispatch
    cmdpats, cmdoptions)
  File "/usr/lib64/python2.6/site-packages/mercurial/extensions.py", line 195,
in closure
    return func(*(args + a), **kw)
  File "/usr/lib/python2.6/site-packages/remotefilelog/__init__.py", line 310,
in runcommand
    return orig(lui, repo, *args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 673, in
runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "/usr/lib64/python2.6/site-packages/mercurial/extensions.py", line 195,
in closure
    return func(*(args + a), **kw)
  File "/usr/lib64/python2.6/site-packages/hgext/pager.py", line 143, in
pagecmd
    return orig(ui, options, cmd, cmdfunc)
  File "/usr/lib64/python2.6/site-packages/mercurial/extensions.py", line 195,
in closure
    return func(*(args + a), **kw)
  File "/usr/lib64/python2.6/site-packages/hgext/color.py", line 518, in
colorcmd
    return orig(ui_, opts, cmd, cmdfunc)
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 1045,
in _runcommand
    return checkargs()
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 1005,
in checkargs
    return cmdfunc()
  File "/usr/lib64/python2.6/site-packages/mercurial/dispatch.py", line 911, in
<lambda>
    d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 994, in
check
    return func(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/mercurial/extensions.py", line 195,
in closure
    return func(*(args + a), **kw)
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 994, in
check
    return func(*args, **kwargs)
  File "/usr/lib/python2.6/site-packages/morestatus.py", line 133, in statuscmd
    ret = orig(ui, repo, *pats, **opts)
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 994, in
check
    return func(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/mercurial/extensions.py", line 195,
in closure
    return func(*(args + a), **kw)
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 994, in
check
    return func(*args, **kwargs)
  File "/usr/lib/python2.6/site-packages/tweakdefaults.py", line 464, in
statuscmd
    return orig(ui, repo, *pats, **opts)
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 994, in
check
    return func(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/mercurial/commands.py", line 6328,
in status
    opts.get('subrepos'))
  File "/usr/lib64/python2.6/site-packages/hgwatchman/__init__.py", line 468,
in status
    return overridestatus(orig, self, *args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/hgwatchman/__init__.py", line 350,
in overridestatus
    listsubrepos)
  File "/usr/lib64/python2.6/site-packages/mercurial/localrepo.py", line 1823,
in status
    listsubrepos)
  File "/usr/lib64/python2.6/site-packages/mercurial/context.py", line 349, in
status
    listunknown)
  File "/usr/lib64/python2.6/site-packages/mercurial/context.py", line 1632, in
_buildstatus
    s = self._dirstatestatus(match, listignored, listclean, listunknown)
  File "/usr/lib64/python2.6/site-packages/mercurial/context.py", line 1605, in
_dirstatestatus
    modified2, fixup = self._checklookup(cmp)
  File "/usr/lib64/python2.6/site-packages/mercurial/extensions.py", line 195,
in closure
    return func(*(args + a), **kw)
  File "/usr/lib/python2.6/site-packages/remotefilelog/__init__.py", line 235,
in checklookup
    if f in parent:
  File "/usr/lib64/python2.6/site-packages/mercurial/context.py", line 87, in
__contains__
    return key in self._manifest
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 727, in
__get__
    result = self.func(obj)
  File "/usr/lib64/python2.6/site-packages/mercurial/context.py", line 529, in
_manifest
    return self._repo.manifest.read(self._changeset[0])
  File "/usr/lib64/python2.6/site-packages/mercurial/util.py", line 727, in
__get__
    result = self.func(obj)
  File "/usr/lib64/python2.6/site-packages/mercurial/context.py", line 525, in
_changeset
    return self._repo.changelog.read(self.rev())
  File "/usr/lib64/python2.6/site-packages/mercurial/repoview.py", line 308, in
changelog
    revs = filterrevs(unfi, self.filtername)
  File "/usr/lib64/python2.6/site-packages/mercurial/repoview.py", line 250, in
filterrevs
    repo.filteredrevcache[filtername] = func(repo.unfiltered())
  File "/usr/lib/python2.6/site-packages/directaccess.py", line 65, in
_computehidden
    hidden = repoview.filterrevs(repo, 'visible')
  File "/usr/lib64/python2.6/site-packages/mercurial/repoview.py", line 250, in
filterrevs
    repo.filteredrevcache[filtername] = func(repo.unfiltered())
  File "/usr/lib64/python2.6/site-packages/mercurial/repoview.py", line 167, in
computehidden
    hidden = tryreadcache(repo, hideable)
  File "/usr/lib64/python2.6/site-packages/mercurial/repoview.py", line 144, in
tryreadcache
    version, = struct.unpack(">H", fh.read(2))
error: unpack requires a string argument of length 2

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