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

[Tor Bug Tracker & Wiki]

#25930: Update gcc to 7.X
--------------------------------------+--------------------------
 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:                            |         Points:
 Reviewer:                            |        Sponsor:
--------------------------------------+--------------------------

Comment (by gk):

 We could get `-fwrapv` back for our debug builds if we switched to GCC 8.x
 (see: #27597). As a data point: I've been compiling (and using) some
 custom Tor Browser with GCC 8.x for a while now and did not run into any
 issues. Thus, we might consider 8.x sufficiently stable to switch to it in
 particular when preparing for eser68.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25930#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online