[GHC] #11266: Can't :browse some modules with GHCi 7.11

[GHC]

#11266: Can't :browse some modules with GHCi 7.11
-------------------------------------+-------------------------------------
           Reporter:  RyanGlScott    |             Owner:
               Type:  bug            |            Status:  new
           Priority:  high           |         Milestone:  8.0.1
          Component:  GHCi           |           Version:  7.11
           Keywords:                 |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  GHCi crash
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 Trying to `:browse` certain modules with GHCi fails with GHC 7.11:

 {{{
 $ inplace/bin/ghc-stage2 --interactive
 GHCi, version 7.11.20151219: http://www.haskell.org/ghc/  :? for help
 λ> :browse GHC.Base
 ($) ::
   forall (w :: GHC.Types.Levity) a (b :: TYPE w). (a -> b) -> a -> b
 ($!) :: (a -> b) -> a -> b
 <lots of output elided>
 data Ordering*** Exception: No match in record selector tyConTyVars
 λ> :browse GHC.Exts
 class GHC.Exts.IsList l where
   type family GHC.Exts.Item l
     Kind: * -> *
   GHC.Exts.fromList :: [GHC.Exts.Item l] -> l
   GHC.Exts.fromListN :: Int -> [GHC.Exts.Item l] -> l
   GHC.Exts.toList :: l -> [GHC.Exts.Item l]
   {-# MINIMAL fromList, toList #-}
 <lots of output elided>
 data GHC.Prim.MutableByteArray# a*** Exception: No match in record
 selector tyConTyVars
 λ> :browse GHC.Prim
 *** Exception: No match in record selector tyConTyVars
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11266>
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