From owner-freebsd-hackers  Wed Feb 19 12:56:58 1997
Return-Path: <owner-hackers>
Received: (from root@localhost)
          by freefall.freebsd.org (8.8.5/8.8.5) id MAA18404
          for hackers-outgoing; Wed, 19 Feb 1997 12:56:58 -0800 (PST)
Received: from gvr.win.tue.nl (root@gvr.win.tue.nl [131.155.210.19])
          by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id MAA18122;
          Wed, 19 Feb 1997 12:54:31 -0800 (PST)
Received: (from guido@localhost) by gvr.win.tue.nl (8.8.5/8.8.2) id VAA02956; Wed, 19 Feb 1997 21:53:46 +0100 (MET)
From: Guido van Rooij <guido@gvr.win.tue.nl>
Message-Id: <199702192053.VAA02956@gvr.win.tue.nl>
Subject: Re: hmm
In-Reply-To: <199702191754.UAA03440@sonic.cris.net> from "Alexander V. Kalganov" at "Feb 19, 97 08:54:19 pm"
To: top@sonic.cris.net (Alexander V. Kalganov)
Date: Wed, 19 Feb 1997 21:53:45 +0100 (MET)
Cc: audit-bin@freebsd.org, FreeBSD-hackers@freebsd.org (FreeBSD-hackers)
X-Mailer: ELM [version 2.4ME+ PL28 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-hackers@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

Alexander V. Kalganov wrote:
> Hi
> Maybe this is a dumb question, but would someone explain me what the
> following is done for?
> 
> 	char *p;
> 
> 	if ((p = argv[0]) == NULL)
> 		errx(2,"test: argc is zero");
> 

It seems a bit strange to me. Just like the first part of the line
underneath btw:
	if (*p != '\0' && p[strlen(p) - 1] == '[') {
	    ^^^^^^^^^^

-Guido

Cc: freebsd-hackers@freebsd.org