[GHC] #8651: 'Untouchable' error when using type function in class constraint in rank-2 type

[GHC]

#8651: 'Untouchable' error when using type function in class constraint in rank-2
type
-------------------------------------------------+-------------------------
        Reporter:  sbarclay                      |            Owner:
            Type:  bug                           |           Status:
        Priority:  normal                        |  closed
       Component:  Compiler (Type checker)       |        Milestone:
      Resolution:  fixed                         |          Version:  7.7
Operating System:  Unknown/Multiple              |         Keywords:
 Type of failure:  None/Unknown                  |     Architecture:
       Test Case:                                |  Unknown/Multiple
  indexed_types/should_compile/T8651             |       Difficulty:
        Blocking:                                |  Unknown
                                                 |       Blocked By:
                                                 |  Related Tickets:  #8644
                                                 |  #7594
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Changes (by simonpj):

 * status:  new => closed
 * testcase:   => indexed_types/should_compile/T8651
 * resolution:   => fixed


Comment:

 Very excellent catch, thank you.

 Simon

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8651#comment:3>
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