[GHC] #13104: runRW# ruins join points

[GHC]

#13104: runRW# ruins join points
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        Reporter:  lukemaurer        |                Owner:  chessai
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.8.1
       Component:  Compiler          |              Version:  8.1
      Resolution:                    |             Keywords:  JoinPoints
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Runtime           |  Unknown/Multiple
  performance bug                    |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by chessai):

 * owner:  (none) => chessai
 * milestone:   => 8.8.1


Comment:

 I would like to work on this as a warm-up to my work on #15560. Reviewing
 the issue, I agree with Simon's last comment about `runRW#` being treated
 specially.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13104#comment:15>
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