[GHC] #9834: GHC panic when used with deferred type errors

[GHC]

#9834: GHC panic when used with deferred type errors
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       Reporter:  Iceland_jack       |                   Owner:
           Type:  bug                |                  Status:  new
       Priority:  normal             |               Milestone:
      Component:  Compiler (Type     |                 Version:  7.8.2
  checker)                           |        Operating System:  Linux
       Keywords:                     |         Type of failure:  GHCi crash
   Architecture:  Unknown/Multiple   |               Test Case:
     Difficulty:  Unknown            |                Blocking:
     Blocked By:                     |  Differential Revisions:
Related Tickets:                     |
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 Attached code panics when run with `-fdefer-type-errors`.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9834>
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