[GHC] #10301: Plugins/dynamic loading subtly broken (it seems)

[GHC]

#10301: Plugins/dynamic loading subtly broken (it seems)
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        Reporter:  thoughtpolice     |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:  8.0.1
       Component:  Compiler          |              Version:  7.8.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  Compile-time      |            Test Case:
  crash                              |  plugins/T10294 plugins/frontend01
      Blocked By:                    |             Blocking:
 Related Tickets:  #8276             |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by adamgundry):

 I suspect the fix might indeed be to implement the equivalent of
 `reinitializeGlobals` for the `TcPluginM` and `GHC` monads.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10301#comment:21>
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