[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
-------------------------------------+-------------------------------------
        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:                    |
-------------------------------------+-------------------------------------

Comment (by sighingnow):

 Indeed it's not a crash, it's just an ordinary error message with
 description "GHC internal error:". The error is reported in `noFound`
 method in TcEnv.hs.

 {{{#!hs
            _ -> failWithTc $
                 vcat[text "GHC internal error:" <+> quotes (ppr name) <+>
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15016#comment:5>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler