[GHC] #9945: export list for System.Posix.Internals breaking the build on Windows

[GHC]

#9945: export list for System.Posix.Internals breaking the build on Windows
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        Reporter:  MartinF           |                   Owner:
            Type:  bug               |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.11
      Resolution:                    |                Keywords:
Operating System:  Windows           |            Architecture:
 Type of failure:  Building GHC      |  Unknown/Multiple
  failed                             |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:  #9852             |  Differential Revisions:
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Comment (by hvr):

 btw this reminds me of a trick I sometimes use to find out which symbols
 are used where within `base` by  compiling `base` w/ `-ddump-minimal-
 imports` and use the result as a first approximation; another trick (if
 you are only interested in a few symbol's use sites) is to attach
 `WARNING` pragmas to symbols and see where the warnings get triggered

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9945#comment:11>
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