[GHC] #3605: Dll's freeze with -threaded

[GHC]

#3605: Dll's freeze with -threaded
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    Reporter:  NeilMitchell      |        Owner:                  
        Type:  bug               |       Status:  new             
    Priority:  high              |    Milestone:  6.12.1          
   Component:  Documentation     |      Version:  6.12.1 RC1      
    Severity:  normal            |   Resolution:                  
    Keywords:                    |   Difficulty:  Unknown         
    Testcase:                    |           Os:  Unknown/Multiple
Architecture:  Unknown/Multiple  |  
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Comment (by simonmar):

 I had a nagging feeling I'd come across this before, and indeed the docs
 do have a section describing a lot of the problems with `DllMain()`:

 [http://www.haskell.org/ghc/docs/latest/html/users_guide/win32-dlls.html#id585039]

 However earlier on in that section the sample code still contains a
 `DllMain()` that calls `startupHaskell`, so we should fix that.  Also the
 section on `DllMain` talks more about shutdown than startup, but both are
 dangerous (fortunately the example code it gives is correct).

 Neil, Lennart: could you check the docs I linked to above and see if you
 agree?

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3605#comment:6>
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