[tor-bugs] #25930 [Applications/Tor Browser]: Update gcc to 7.X

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#25930: Update gcc to 7.X
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 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  task                      |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:  tbb-rbm                   |  Actual Points:
Parent ID:  #30321                    |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by cypherpunks):

 GCC 9.1 is better (#30475).
 About Firefox: https://hubicka.blogspot.com/2019/05/gcc-9-link-time-and-
 inter-procedural.html
 Hah: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88702

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25930#comment:6>
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