[GHC] #14175: Panic repSplitTyConApp_maybe

[GHC]

#14175: Panic repSplitTyConApp_maybe
-------------------------------------+-------------------------------------
        Reporter:  dfeuer            |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.2.2
       Component:  Compiler (Type    |              Version:  8.2.1
  checker)                           |
      Resolution:                    |             Keywords:  TypeInType
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #13910            |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by simonpj):

 After my fix I get this for comment:4
 {{{
 c:/code/HEAD/inplace/bin/ghc-stage1 -c  T14175b.hs

 T14175b.hs:13:3: error:
         Expected kind    (k1 -> *) -> *   ,
         but    CD k (a :: k -> *) :: (k -> *) -> *    has kind    k1 -> *
         In the data instance declaration for    CD
       In the instance declaration for    C (Maybe a)
    |
 13 |   data CD k (a :: k -> *) :: (k -> *) -> *
    |   ^^^^^^^^^^^^^^^^^^^^^^^
 }}}
 That looks pretty weird too.  But at least neither crashes, which is the
 first thing.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14175#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler