[GHC] #4246: "Conflicting family instance declarations" error mentions code I did not write

[GHC]

#4246: "Conflicting family instance declarations" error mentions code I did not
write
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    Reporter:  TillmannRendel    |       Owner:              
        Type:  bug               |      Status:  new         
    Priority:  normal            |   Component:  Compiler    
     Version:  6.12.1            |    Keywords:              
    Testcase:                    |   Blockedby:              
          Os:  Unknown/Multiple  |    Blocking:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
---------------------------------+------------------------------------------
Changes (by Blaisorblade):

 * cc: p.giarrusso@… (added)


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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4246#comment:1>
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