[tor-bugs] #25823 [Applications/Tor Launcher]: Tor Launcher inconsistently sets TZ=UTC for tor process

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#25823: Tor Launcher inconsistently sets TZ=UTC for tor process
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     Reporter:  catalyst                   |      Owner:  brade
         Type:  defect                     |     Status:  new
     Priority:  Medium                     |  Milestone:
    Component:  Applications/Tor Launcher  |    Version:
     Severity:  Normal                     |   Keywords:  clock-skew,
                                           |  timezone
Actual Points:                             |  Parent ID:
       Points:                             |   Reviewer:
      Sponsor:                             |
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 Some investigations done as part of #25511 suggest that the first time Tor
 Launcher runs tor, it either unsets or fails to change `TZ`.  If tor
 crashes or needs to be restarted for some reason, then it sets `TZ=UTC`.
 My summary of one instance of this behavior is at ticket:25511#comment:32.

 Tor Launcher should probably leave the time zone alone when starting tor,
 so tor can detect what local time for the machine is.  We should also
 consider the privacy impact of revealing a user's timezone through logging
 (see #18112 for one instance of this concern).

 In any case Tor Launcher should probably be consistent about which
 timezone it starts tor in.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25823>
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