[GHC] #8557: Panic "tcTyVarDetails" when :forcing a kind-polymorphic data family instance

[GHC]

#8557: Panic "tcTyVarDetails" when :forcing a kind-polymorphic data family
instance
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        Reporter:  goldfire          |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.7
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"45f2d29d59dcff2a5aebb5aae00e217f8f2a532c/testsuite"]:
 {{{
 #!CommitTicketReference repository="testsuite"
 revision="45f2d29d59dcff2a5aebb5aae00e217f8f2a532c"
 Test Trac #8557
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8557#comment:2>
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