[tbb-bugs] #25304 [Applications/Tor Browser]: Update gcc to 6.4.0

[Tor Bug Tracker & Wiki]

#25304: Update gcc to 6.4.0
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     Reporter:  boklm                |      Owner:  tbb-team
         Type:  task                 |     Status:  new
     Priority:  Very High            |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb-rbm,
     Severity:  Normal               |  TorBrowserTeam201802, boklm201802
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 We should build Tor Browser using gcc 6.4.0.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25304>
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