[GHC] #7012: ForeignPtrContents isn't exported

[GHC]

#7012: ForeignPtrContents isn't exported
------------------------------+---------------------------------------------
 Reporter:  rl                |          Owner:                   
     Type:  bug               |         Status:  new              
 Priority:  normal            |      Component:  libraries (other)
  Version:  7.4.2             |       Keywords:                   
       Os:  Unknown/Multiple  |   Architecture:  Unknown/Multiple 
  Failure:  Other             |       Testcase:                   
Blockedby:                    |       Blocking:                   
  Related:                    |  
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 GHC.ForeignPtr doesn't export ForeignPtrContents. This means that this
 function can't be given a signature in user code:

 f (ForeignPtr _ x) = x

 ForeignPtrContents should be exported, at least abstractly, although
 exporting the constructors, too, would be useful for low-level code.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7012>
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