[GHC] #8834: 64-bit windows cabal.exe segfaults in GC

[GHC]

#8834: 64-bit windows cabal.exe segfaults in GC
----------------------------------+----------------------------------
        Reporter:  awson          |            Owner:
            Type:  bug            |           Status:  patch
        Priority:  highest        |        Milestone:  7.8.1
       Component:  Compiler       |          Version:  7.8.1-rc2
      Resolution:                 |         Keywords:
Operating System:  Windows        |     Architecture:  x86_64 (amd64)
 Type of failure:  Runtime crash  |       Difficulty:  Unknown
       Test Case:                 |       Blocked By:
        Blocking:                 |  Related Tickets:
----------------------------------+----------------------------------

Comment (by awson):

 Replying to [comment:30 jstolarek]:
 > I applied awson's patch that reverts some of my changes in `CmmSink` and
 surprisingly I'm still getting a segfault with code posted in comment
 [[comment:#27]].

 Very strange. I have no segfault here with patched HEAD.

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8834#comment:31>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler