[GHC] #9062: Role: ~# should be ~R#

[GHC]

#9062: Role: ~# should be ~R#
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       Reporter:  conal             |             Owner:
           Type:  bug               |            Status:  new
       Priority:  normal            |         Milestone:
      Component:  Compiler          |           Version:  7.8.2
       Keywords:                    |  Operating System:  MacOS X
   Architecture:  Unknown/Multiple  |   Type of failure:  None/Unknown
     Difficulty:  Unknown           |         Test Case:
     Blocked By:                    |          Blocking:
Related Tickets:                    |
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 The following coercion showed up in Core. Richard Eisenberg pointed out
 that the `~#` should be `~R#`.
 {{{
   <Tree N0 Int>_R -> NTCo:Sum[0] <Int>_R
     :: (Tree N0 Int -> Sum Int) ~# (Tree N0 Int -> Int)
 }}}
 I can dig up more information if needed.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9062>
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