[GHC] #8140: ghc: panic! (the 'impossible' happened)

[GHC]

#8140: ghc: panic! (the 'impossible' happened)
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        Reporter:  PrzD              |            Owner:
            Type:  bug               |           Status:  new
        Priority:  normal            |        Milestone:
       Component:  Compiler          |          Version:  7.4.1
      Resolution:                    |         Keywords:
Operating System:  Unknown/Multiple  |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown      |       Difficulty:  Unknown
       Test Case:                    |       Blocked By:
        Blocking:                    |  Related Tickets:
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Changes (by PrzD):

 * version:  7.6.3 => 7.4.1


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8140#comment:1>
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