[GHC] #9181: :browse GHC.TypeLits causes panic

[GHC]

#9181: :browse GHC.TypeLits causes panic
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       Reporter:  nomeata           |             Owner:
           Type:  bug               |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Compiler          |           Version:  7.8.2
       Keywords:                    |  Operating System:  Unknown/Multiple
   Architecture:  Unknown/Multiple  |   Type of failure:  GHCi crash
     Difficulty:  Unknown           |         Test Case:  T9181
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 Upon `:browse GHC.TypeLits` I get:

 {{{
 ghc-stage2: panic! (the 'impossible' happened)
   (GHC version 7.9.20140606 for x86_64-unknown-linux):
         toIfaceDecl: BuiltInFamTyCon *

 Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9181>
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