[GHC] #4966: Type checking regression

[GHC]

#4966: Type checking regression
----------------------------------------+-----------------------------------
    Reporter:  igloo                    |        Owner:  simonpj     
        Type:  bug                      |       Status:  new         
    Priority:  highest                  |    Milestone:  7.0.2       
   Component:  Compiler (Type checker)  |      Version:  7.0.1       
    Keywords:                           |     Testcase:              
   Blockedby:                           |   Difficulty:              
          Os:  Unknown/Multiple         |     Blocking:              
Architecture:  Unknown/Multiple         |      Failure:  None/Unknown
----------------------------------------+-----------------------------------

Comment(by simonpj):

 People who write instance decls like
 {{{
 instance GUIObject w => Eq w where ...
 }}}
 are asking for trouble!

 Anyway, I see what is happening.  Easily fixed.  Patch coming.

 S

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4966#comment:2>
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