[GHC] #10083: ghc: panic! (the 'impossible' happened)

[GHC]

#10083: ghc: panic! (the 'impossible' happened)
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        Reporter:  hedayaty          |                   Owner:
            Type:  bug               |                  Status:  infoneeded
        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:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Changes (by thomie):

 * os:  MacOS X => Unknown/Multiple
 * architecture:  x86_64 (amd64) => Unknown/Multiple


Comment:

 Probably not Mac specific.

 @hedayaty: did you manage to create a minimal example reproducing the bug?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10083#comment:9>
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