[GHC] #15016: Referencing a do-bound variable in a rec block with ApplicativeDo results in variable not in scope during type checking

[GHC]

#15016: Referencing a do-bound variable in a rec block with ApplicativeDo results
in variable not in scope during type checking
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        Reporter:  rjmk              |                Owner:  simonmar
            Type:  bug               |               Status:  new
        Priority:  high              |            Milestone:  8.4.3
       Component:  Compiler          |              Version:  8.2.2
      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 simonpj):

 Maybe so, but it still should never happen!

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15016#comment:6>
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