Date: Wed, 19 Feb 1997 14:31:03 -0800 (PST) From: John-Mark Gurney <jmg@nike.efn.org> To: Guido van Rooij <guido@gvr.win.tue.nl> Cc: "Alexander V. Kalganov" <top@sonic.cris.net>, audit-bin@FreeBSD.ORG, FreeBSD-hackers <FreeBSD-hackers@FreeBSD.ORG> Subject: Re: hmm Message-ID: <Pine.BSF.3.95q.970219142947.405n-100000@hydrogen.nike.efn.org> In-Reply-To: <199702192053.VAA02956@gvr.win.tue.nl>
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On Wed, 19 Feb 1997, Guido van Rooij wrote:
> 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] == '[') {
> ^^^^^^^^^^
that makes sure that the strlen(p) > 0... you wouldn't want to access
p[-1] would you??
hope this helps... ttyl..
John-Mark
gurney_j@efn.org
http://resnet.uoregon.edu/~gurney_j/
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