[GHC] #13826: :t Predicate (length :: [] -> Int)

[GHC]

#13826: :t Predicate (length :: [] -> Int)
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           Reporter:  dpsrt     |             Owner:  (none)
               Type:  bug       |            Status:  new
           Priority:  normal    |         Milestone:
          Component:  Compiler  |           Version:  8.0.2
           Keywords:            |  Operating System:  Unknown/Multiple
       Architecture:  Other     |   Type of failure:  None/Unknown
          Test Case:            |        Blocked By:
           Blocking:            |   Related Tickets:
Differential Rev(s):            |         Wiki Page:
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 {{{
 Prelude> :t Predicate (length :: [] -> Int)
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.2 for x86_64-unknown-mingw32):
         initTc: unsolved constraints
   WC {wc_insol =
         [W] Predicate_a64B :: t_a64A[tau:3] (CHoleCan: Predicate)}
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13826>
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