[GHC] #15556: Inconsistent kind output for (->)

[GHC]

#15556: Inconsistent kind output for (->)
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        Reporter:  cvlad             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.6.1
       Component:  GHCi              |              Version:  8.4.3
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Documentation     |  Unknown/Multiple
  bug                                |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by bgamari):

 Hmmm, I'm a tad surprised this isn't caught by the runtime rep defaulting
 code (disabled by `-fprint-explicit-runtime-reps`).

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15556#comment:2>
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