[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 duncan):

 What would `exitWith (ExitTerminated signal)` mean on Windows?

 Having the abstract `ExitStatus` type as Simon and I proposed would not
 have that issue, since it's only for the reading side, not the throwing
 side, and on Windows can always return Nothing.

 My view is still that using a structured type is a lot nicer than using a
 bit twiddling encoding. Related to this is that we want an extra
 `CreateProcess` option to do the WCE automatically. We still have the mad
 situation that System.Cmd can mask ctl-c for us, but System.Process lacks
 that feature.

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7229#comment:22>
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