[GHC] #13132: Compilation fails with a panic: get_op runContT

[GHC]

#13132: Compilation fails with a panic: get_op runContT
-------------------------------------+-------------------------------------
           Reporter:  PoroCYon       |             Owner:
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:
          Component:  Compiler       |           Version:  8.0.1
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  Compile-time
  Unknown/Multiple                   |  crash or panic
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Compiling 'tersmu' from Hackage fails with the following:

 {{{
 [13 of 16] Compiling ParseM           ( ParseM.hs, ParseM.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.1 for x86_64-unknown-linux):
         get_op runContT

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

 The code can be found [https://gitlab.com/zugz/tersmu here].

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13132>
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