[GHC] #11427: superclasses aren't considered because context is no smaller than the instance head

[GHC]

#11427: superclasses aren't considered because context is no smaller than the
instance head
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        Reporter:  phadej            |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1-rc1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Simon Peyton Jones <simonpj@…>):

 In [changeset:"8e6a68d49a4f2ffd49990dc6b84135d93015d3f8/ghc"
 8e6a68d4/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="8e6a68d49a4f2ffd49990dc6b84135d93015d3f8"
 Add Trac #11427 to Note [Recursive superclasses]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11427#comment:9>
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