[GHC] #5058: getProcessExitCode doesn't retry on EINTR

[GHC]

#5058: getProcessExitCode doesn't retry on EINTR
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    Reporter:  sclv              |       Owner:                             
        Type:  bug               |      Status:  new                        
    Priority:  normal            |   Component:  libraries/process          
     Version:  7.0.3             |    Keywords:                             
    Testcase:                    |   Blockedby:                             
          Os:  Linux             |    Blocking:                             
Architecture:  Unknown/Multiple  |     Failure:  Incorrect result at runtime
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 Just like the ticket says. The source uses throwErrnoIfMinus1, and I can't
 think why it shouldn't just use throwErrnoIfMinus1Retry. I think that this
 is an issue with a few other functions that should do the same thing,
 including waitForProcess and probably terminateProcess as well.

 I also wonder if the same issue is in other core libraries, but that's
 beyond this ticket.

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5058>
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