[GHC] #9969: panic in T7562

[GHC]

#9969: panic in T7562
-------------------------------------+-------------------------------------
        Reporter:  nomeata           |                   Owner:  simonpj
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |               Test Case:  T7562
      Blocked By:                    |                Blocking:
 Related Tickets:  #7562             |  Differential Revisions:
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"327ce1d336c8fbdb068be900a187f96d1c60b851/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="327ce1d336c8fbdb068be900a187f96d1c60b851"
 Return a [HsImplBang] from dataConImplBangs even with NoDataConRep

 This fixes Trac #9969, a new crash in T7562 that I somehow missed when
 fiddling with HsBang
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9969#comment:1>
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