[GHC] #12148: GHC 8 crash when building "chatter" library

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Thu Jun 2 21:55:56 UTC 2016


#12148: GHC 8 crash when building "chatter" library
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           Reporter:  varosi          |             Owner:
               Type:  bug             |            Status:  new
           Priority:  normal          |         Milestone:
          Component:  Compiler        |           Version:  8.0.1
           Keywords:                  |  Operating System:  Windows
       Architecture:  x86_64 (amd64)  |   Type of failure:  None/Unknown
          Test Case:                  |        Blocked By:
           Blocking:                  |   Related Tickets:
Differential Rev(s):                  |         Wiki Page:
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 While I try to build "chatter" library from GitHub with Stack with GHC 8.0
 resolver I got that crash:

 [ 9 of 23] Compiling NLP.Corpora.Brown ( src\NLP\Corpora\Brown.hs, .stack-
 work\dist\b7fec021\build\NLP\Corpora\Brown.o )
 ghc.exe: panic! (the 'impossible' happened)
   (GHC version 8.0.1 for x86_64-unknown-mingw32):
         Simplifier ticks exhausted
   When trying RuleFired Class op unsafeShiftR
   To increase the limit, use -fsimpl-tick-factor=N (default 100)
   If you need to do this, let GHC HQ know, and what factor you needed
   To see detailed counts use -ddump-simpl-stats
   Total ticks: 11403800

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12148>
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