Cygwin crashes in kill_pgrp, _pinfo truncation issue.

[Christopher Faylor]

On Wed, Aug 15, 2012 at 04:54:42PM +0400, Andrey Khalyavin wrote:
>I finally got a cygwin crash dump from our build bots. It shows, that
>cygwin1.dll crashes in kill_pgrp function on line:
>	  (pid > 1 && p->pgid != pid) ||
>where p is a pointer to _pinfo. This function enumerates all _pinfo's
>and executes this line for all of them which pass p->exists() check.
>In crash dump p points to _pinfo that has process_state equal to
>PID_IN_USE | PID_EXECED.

Thanks for tracking this down.  I've added a check for "execed" to
_pinfo::exists.

cgf

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