[GHC] #13393: GHC panic: No skolem info

[GHC]

#13393: GHC panic: No skolem info
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        Reporter:  sheyll            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by simonpj):

 Perhaps this is fixed already?  See #13297, #13135, #12844.  Would it be
 possible to check?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13393#comment:1>
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