[GHC] #8039: RTS linker: unloadObj() does not actually unload the code

[GHC]

#8039: RTS linker: unloadObj() does not actually unload the code
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        Reporter:  simonmar           |            Owner:  simonmar
            Type:  task               |           Status:  closed
        Priority:  high               |        Milestone:  7.8.1
       Component:  Runtime System     |          Version:  7.6.3
      Resolution:  fixed              |         Keywords:
Operating System:  Unknown/Multiple   |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown       |       Difficulty:  Unknown
       Test Case:  rts/linker_unload  |       Blocked By:
        Blocking:                     |  Related Tickets:
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Comment (by simonmar):

 The big missing piece with unloading of .so's is knowing their boundaries
 in memory so that the GC can detect whether there are any references left.
 I don't know of a way to do that with the system linker, if anyone knows
 of a way then I'd be happy to add support for unloading .so's.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8039#comment:16>
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