[GHC] #7171: erroneous overlapping instances reported with FunDeps

[GHC]

#7171: erroneous overlapping instances reported with FunDeps
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  Reporter:  jwlato                          |          Owner:                       
      Type:  bug                             |         Status:  closed               
  Priority:  normal                          |      Milestone:                       
 Component:  Compiler (Type checker)         |        Version:  7.6.1-rc1            
Resolution:  fixed                           |       Keywords:  type classes, fundeps
        Os:  Unknown/Multiple                |   Architecture:  Unknown/Multiple     
   Failure:  GHC rejects valid program       |     Difficulty:  Unknown              
  Testcase:  typecheck/should_compile/T7171  |      Blockedby:                       
  Blocking:                                  |        Related:                       
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Comment(by jwlato):

 I can confirm my problem is fixed in HEAD, but not ghc-7.6.0.20120820.
 Hopefully it'll be merged soon.  Thanks for looking at this so quickly!

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7171#comment:3>
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