[GHC] #10071: Implement warnings for class-method overriding

[GHC]

#10071: Implement warnings for class-method overriding
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        Reporter:  hvr               |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:  7.12.1
       Component:  Compiler          |                 Version:  7.8.4
      Resolution:                    |                Keywords:  AMP
Operating System:  Unknown/Multiple  |            Architecture:
 Type of failure:  None/Unknown      |  Unknown/Multiple
      Blocked By:                    |               Test Case:
 Related Tickets:  #8004, #4384      |                Blocking:
                                     |  Differential Revisions:
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Comment (by simonpj):

 What on earth is this ticket about?  The first word is "This", presumably
 referring to something, but with no clue about ''what'' it is referring
 to.  I am utterly lost.

 A feature request (which I assume this is) needs a specification!

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10071#comment:1>
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