[GHC] #15799: GHC panic (and warnings)

[GHC]

#15799: GHC panic (and warnings)
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        Reporter:  Iceland_jack      |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.6.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
                                     |  typecheck/should_fail/T15799
      Blocked By:                    |             Blocking:
 Related Tickets:  #12045            |  Differential Rev(s):  Phab:D5229
       Wiki Page:                    |
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Comment (by RyanGlScott):

 #16185 was fixed in
 [https://gitlab.haskell.org/ghc/ghc/commit/6cce36f83aec33d33545e0ef2135894d22dff5ca
 6cce36f83aec33d33545e0ef2135894d22dff5ca] (re: comment:8). Did that commit
 fix this ticket? Someone should check.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15799#comment:9>
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