[GHC] #7229: Detecting if a process was killed by a signal is impossible

[GHC]

#7229: Detecting if a process was killed by a signal is impossible
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        Reporter:  benmachine         |            Owner:
            Type:  bug                |           Status:  new
        Priority:  high               |        Milestone:  7.8.1
       Component:  libraries/process  |          Version:
      Resolution:                     |         Keywords:
Operating System:  Unknown/Multiple   |     Architecture:  Unknown/Multiple
 Type of failure:  None/Unknown       |       Difficulty:  Unknown
       Test Case:                     |       Blocked By:
        Blocking:                     |  Related Tickets:
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Comment (by hvr):

 Replying to [comment:18 hvr]:
 > Ok, in summary I see the following possibilities for the return value of
 the existing `waitForProcess` call on POSIX systems:
 >
 > ...

  5. PS/Just for the record: it would also be possible (since
 `WIFEXITED(s)` and `WIFSIGNALED(s)` are mutually exclusive) to encode
 signals as negative integers

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7229#comment:28>
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