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Date: Tue, 28 Oct 2003 10:56:21 -0500
From: Christopher Faylor <cgf-rcm AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 1.5.5-1: fprintf(stdout, ...) writes to serial port when used by apcupsd
Message-ID: <20031028155621.GA29657@redhat.com>
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On Tue, Oct 28, 2003 at 10:27:23AM +0100, Alexander Schremmer wrote:
>Christopher Faylor wrote:
>> This is not a cygwin problem.  It is a problem with a program 
>> that assumes that it has a valid stdout.  It is perfectly
>> possible that a program can be started with no stdout, stdin, or stderr.
>
>The author said that it must a problem of cygwin ...

The author is wrong.  It happens.

You can probably get the same behavior from:

#!/bin/sh
exec 0<&- 1>&-
apcupsd

>Is it enough to call ftell(stdout) and check for != -1 to check for a valid
>stdout? Then I'd submit that patch to apcupsd.

Why don't you verify this for yourself rather than ask for corroboration
from people who have never used the program?  There is no magic here.

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