[GHC] #4449: GHC 7 can't do IO when demonized

[GHC]

#4449: GHC 7 can't do IO when demonized
----------------------------+-----------------------------------------------
  Reporter:  kazu-yamamoto  |          Owner:             
      Type:  bug            |         Status:  new        
  Priority:  normal         |      Milestone:             
 Component:  Compiler       |        Version:  7.1        
Resolution:                 |       Keywords:  forkProcess
  Testcase:                 |      Blockedby:             
Difficulty:                 |             Os:  MacOS X    
  Blocking:                 |   Architecture:  x86        
   Failure:  None/Unknown   |  
----------------------------+-----------------------------------------------

Comment(by kazu-yamamoto):

 Simon,

 What is a right way to implement daemons in GHC7? Use hdaemonize instead
 of direct-daemonize?

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4449#comment:16>
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