[GHC] #12769: ghc: internal error: stg_ap_pp_ret

[GHC]

#12769: ghc: internal error: stg_ap_pp_ret
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           Reporter:  kinnla            |             Owner:
               Type:  bug               |            Status:  new
           Priority:  normal            |         Milestone:
          Component:  Compiler          |           Version:  7.8.3
           Keywords:                    |  Operating System:  MacOS X
       Architecture:  Unknown/Multiple  |   Type of failure:  Runtime crash
          Test Case:                    |        Blocked By:
           Blocking:                    |   Related Tickets:
Differential Rev(s):                    |         Wiki Page:
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 appeared when building a project on macOS Sierra:
 https://github.com/Potregon/while/blob

 See attached log file (told me to report the bug)

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12769>
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