[GHC] #14986: ghc panics when compiling stage 2

[GHC]

#14986: ghc panics when compiling stage 2
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        Reporter:  terrorjack        |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Build System      |              Version:  8.5
      Resolution:                    |             Keywords:
Operating System:  Windows           |         Architecture:  x86_64
 Type of failure:  Building GHC      |  (amd64)
  failed                             |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by terrorjack):

 I rebuilt using quick.mk, only preserving GhcEnableTablesNextToCode=NO and
 INTEGER_LIBRARY=integer-simple, the problem remains. The last commit known
 to build without a hassle is efd70cfb4b0b9932a880ab417d75eaf95da3d5e6. I'm
 chasing the first commit to break.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14986#comment:1>
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