[GHC] #4889: Ignore broken pipe error when writing to a died process

[GHC]

#4889: Ignore broken pipe error when writing to a died process
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    Reporter:  guest              |        Owner:              
        Type:  feature request    |       Status:  new         
    Priority:  normal             |    Milestone:              
   Component:  libraries/process  |      Version:              
    Keywords:                     |     Testcase:              
   Blockedby:                     |   Difficulty:              
          Os:  Linux              |     Blocking:              
Architecture:  Unknown/Multiple   |      Failure:  None/Unknown
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Comment(by simonmar):

 Thanks. A couple of comments on the patch:

  * could we ignore the correct exception, not just all IO exceptions?
  * please add a comment describing the problem and the ticket number

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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4889#comment:1>
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