[GHC] #7908: InstanceSigs suggestion not accepted

[GHC]

#7908: InstanceSigs suggestion not accepted
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              Reporter:  heisenbug   |            Owner:
                  Type:  bug         |           Status:  closed
              Priority:  normal      |        Milestone:
             Component:  Compiler    |          Version:  7.7
  (Type checker)                     |         Keywords:
            Resolution:  fixed       |     Architecture:  Unknown/Multiple
      Operating System:              |       Difficulty:  Unknown
  Unknown/Multiple                   |       Blocked By:
       Type of failure:              |  Related Tickets:
  None/Unknown                       |
             Test Case:              |
  polykinds/T7908                    |
              Blocking:              |
Differential Revisions:              |
-------------------------------------+-------------------------------------
Changes (by simonpj):

 * status:  new => closed
 * testcase:   => polykinds/T7908
 * resolution:   => fixed


Comment:

 The patch (pointed to from the other tickets) fixes the problem by
 allowing instance signatures to be more polymorphic than the instantiated
 class method type.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7908#comment:6>
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