[GHC] #11254: GHC panic

[GHC]

#11254: GHC panic
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        Reporter:  Iceland_jack  |                Owner:
            Type:  bug           |               Status:  new
        Priority:  normal        |            Milestone:
       Component:  Compiler      |              Version:  7.11
      Resolution:                |             Keywords:
Operating System:  Linux         |         Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown  |            Test Case:
      Blocked By:                |             Blocking:
 Related Tickets:                |  Differential Rev(s):
       Wiki Page:                |
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Changes (by Iceland_jack):

 * Attachment "panic.log" added.

 Output of ghci -fdefer-type-errors -ignore-dot-ghci panic.hs

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11254>
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