[GHC] #16342: Kind inference crash

[GHC]

#16342: Kind inference crash
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        Reporter:  simonpj           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.3
      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 goldfire):

 If we type-checked `HsDecl GhcRn` into `HsDecl GhcTc`, this would be much
 easier. Of course, classes get type-checked in pieces, so we would need
 multiple phase parameters there...

 In any case, I agree that reverse-mapping may be the cheap and cheerful
 solution here.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/16342#comment:3>
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