[GHC] #16107: Update GCC compiler & friends

[GHC]

#16107: Update GCC compiler & friends
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        Reporter:  flip101           |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:  8.10.1
       Component:  Compiler          |              Version:  8.6.3
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * cc: Phyx- (added)
 * milestone:   => 8.10.1


Comment:

 CCing Tamar, our Windows czar. I'm not sure whether there is anything
 keeping us on the `gcc` release we use currently. Tamar, should I just go
 ahead and try updating it?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16107#comment:1>
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