[GHC] #2291: Panic mixing RULES and Type Families

[GHC]

#2291: Panic mixing RULES and Type Families
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    Reporter:  guest                         |        Owner:          
        Type:  bug                           |       Status:  new     
    Priority:  normal                        |    Milestone:          
   Component:  Compiler                      |      Version:  6.9     
    Severity:  normal                        |   Resolution:          
    Keywords:  type families, rewrite rules  |     Testcase:  attached
Architecture:  Multiple                      |           Os:  Linux   
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Changes (by guest):

 * cc: ekmett at gmail.com (added)

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2291#comment:1>
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