[GHC] #11611: ghc panics

[GHC]

#11611: ghc panics
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        Reporter:  Iceland_jack      |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by hvr):

 I notice you're not using a recent GHC HEAD snapshot. I've just tried in
 recent GHC HEAD & GHC 8.0RC and in both cases GHC does not panic:

 {{{
 $ ghci-8.0.0.20160218 -ignore-dot-ghci Panic.hs
 GHCi, version 8.0.0.20160218: http://www.haskell.org/ghc/  :? for help
 [1 of 1] Compiling Main             ( Panic.hs, interpreted )

 Panic.hs:6:37: error:
     • Expected kind ‘[*]’, but ‘a’ has kind ‘*’
     • In the first argument of ‘A’, namely ‘a’
       In the first argument of ‘Show’, namely ‘A a’
       In the stand-alone deriving instance for ‘Show a => Show (A a)’
 }}}

 {{{
 $ ghci-8.1.20160218 -ignore-dot-ghci Panic.hs
 GHCi, version 8.1.20160218: http://www.haskell.org/ghc/  :? for help
 [1 of 1] Compiling Main             ( Panic.hs, interpreted )

 Panic.hs:6:37: error:
     • Expected kind ‘[*]’, but ‘a’ has kind ‘*’
     • In the first argument of ‘A’, namely ‘a’
       In the first argument of ‘Show’, namely ‘A a’
       In the stand-alone deriving instance for ‘Show a => Show (A a)’
 Failed, modules loaded: none.
 Prelude>
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11611#comment:1>
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