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Date: Tue, 25 Jun 2002 20:35:35 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: some Win32 exit codes become 0
Message-ID: <20020626003535.GH5480@redhat.com>
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References: <2D9D5132D9067C49A484611CD8CE08D469F7A1 AT VELOCE DOT performant DOT com>
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User-Agent: Mutt/1.3.23.1i

On Tue, Jun 25, 2002 at 03:39:53PM -0700, Ted Romer wrote:
>In cygwin-1.3.11-3, if I invoke a Win32 process that exits with
>negative status (or status >= 256), cygwin converts the status to 0.
>
>Good practice or not, programs often use -1 as an exit status
>indicating failure, so this makes error checking challenging.
>
>Easy to reproduce:
>
>% perl -e 'exit(-1)' % echo $?  0 % jython nosuchscript.py % echo $?  0
>
>The cause is that sigproc.cc:stopped_or_terminated assumes that the
>EXIT_SIGNAL bit in the exit code in fact indicates that the process
>exited due to a signal.  This is true for cygwin processes, but not for
>Win32 processes.

There are some cases where we can't accommodate pure Windows processes.
This is one of them.

cgf

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