From owner-freebsd-questions@FreeBSD.ORG  Wed May 17 18:37:16 2006
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Date: Wed, 17 May 2006 12:36:40 -0600
From: Lorin Lund <wbs@infowest.com>
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To: Andy Greenwood <greenwood.andy@gmail.com>
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Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
Subject: Re: C coding question
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Andy Greenwood wrote:

> I am helping someone work on porting some code to Freebsd, and the
> code below works on Linux, but not on FreeBSD (compiles, but gives
> Segmentation Fault: 11). I'm not sure where the problem is, and any
> pointers would be much appreciated.
>
>        /* Check if we must stop */
>        if(tf_stat_file != NULL)
>        {
>            tf_stat = fopen(tf_stat_file, "r");
>            if (tf_stat != NULL)
>            {
>                /* Get state */
>                stat_state=fgetc(tf_stat);
>
>                /* Torrentflux asked to shutdown the torrent */
>                if (stat_state == '0')
>                {
>                    mustDie = 1;
>                }
>            }
>            fclose(tf_stat);
>        }
> _______________________________________________ 

I think I would move the
    fclose( tf_stat)
up a line.  No need to close a file that failed to open.  The fclose( ) 
acting on
a NULL pointer might be your error.