[GHC] #12033: [TypeApplications] GHC internal error

[GHC]

#12033: [TypeApplications] GHC internal error
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        Reporter:  Iceland_jack      |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:
                                     |  TypeApplications
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 simonpj):

 `CatFail.hs` fails with
 {{{
 T12033a.hs:45:31: error:
     Not in scope: type constructor or class ‘Dict’
 }}}
 so perhaps the test isn't right. Anyway, I think #12055, which does
 reproduce, is a simpler test case.

 On the other hand `HaskellBug.hs` really is a new and quite different bug.
 Patch coming for that.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12033#comment:2>
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