[GHC] #10318: Cycles in class declaration (via superclasses) sometimes make sense.

[GHC]

#10318: Cycles in class declaration (via superclasses) sometimes make sense.
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        Reporter:  ekmett            |                Owner:
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler (Type    |              Version:  7.10.1
  checker)                           |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  GHC rejects       |            Test Case:  indexed-
  valid program                      |  types/should_compile/T10318
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by simonpj):

 * testcase:   => indexed-types/should_compile/T10318


Comment:

 OK, this is done!

 Edward: can you try it out?

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10318#comment:10>
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