[tor-bugs] #23025 [Applications/Tor Browser]: Flags to increase hardening on macOS

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#23025: Flags to increase hardening on macOS
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     Reporter:  arthuredelstein           |      Owner:  arthuredelstein
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:
                                          |  TorBrowserTeam201707
Actual Points:                            |  Parent ID:  #21448
       Points:                            |   Reviewer:
      Sponsor:                            |
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 We can add the following flags to our Mac build for some extra protection:

 {{{
 -fstack-protector-strong
 -D_FORTIFY_SOURCE=2
 -Werror=format
 -Werror=format-security
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23025>
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