[GHC] #3900: CAFs used after GC with shared libs

[GHC]

#3900: CAFs used after GC with shared libs
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    Reporter:  augustss          |       Owner:                
        Type:  bug               |      Status:  new           
    Priority:  normal            |   Component:  Runtime System
     Version:  6.12.1            |    Keywords:                
          Os:  Linux             |    Testcase:                
Architecture:  Unknown/Multiple  |     Failure:  Runtime crash 
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 When using dlopen() it's possible that the loaded library introduces
 references to CAFs that have already been garbage collected.  Chaos
 follows.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3900>
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