[GHC] #7035: `deriving instance Generic (HsExpr Id)` raises panic

[GHC]

#7035: `deriving instance Generic (HsExpr Id)` raises panic
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        Reporter:  Daniel            |                Owner:  dreixel
  Schuessler                         |
            Type:  bug               |               Status:  closed
        Priority:  normal            |            Milestone:  7.8.1
       Component:  Compiler          |              Version:  7.4.2
      Resolution:  duplicate         |             Keywords:  Generics
Operating System:  Linux             |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash                              |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  7255              |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * keywords:   => Generics


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7035#comment:5>
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