[ ghc-Bugs-756454 ] Class op should mention class tyvar

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Bugs item #756454, was opened at 2003-06-18 08:20
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Simon Peyton Jones (simonpj)
Assigned to: Nobody/Anonymous (nobody)
Summary: Class op should mention class tyvar

Initial Comment:
   class Foo a where
      op :: Int

is accepted, but it should be rejected.  Any use of op 
give ambiguity errors, of course, but it should be 
rejected up front.


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