[GHC] #14933: DeriveAnyClass can cause "No skolem info" GHC panic

[GHC]

#14933: DeriveAnyClass can cause "No skolem info" GHC panic
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        Reporter:  RyanGlScott       |                Owner:  (none)
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:  8.4.2
       Component:  Compiler (Type    |              Version:  8.2.2
  checker)                           |
      Resolution:                    |             Keywords:  deriving
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  crash or panic                     |  deriving/should_compile/T14933
      Blocked By:                    |             Blocking:
 Related Tickets:  #14932            |  Differential Rev(s):  Phab:D4507
       Wiki Page:                    |
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Changes (by RyanGlScott):

 * status:  patch => merge
 * testcase:   => deriving/should_compile/T14933
 * milestone:   => 8.4.2


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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14933#comment:5>
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