From owner-freebsd-hackers@FreeBSD.ORG  Sat Feb 18 21:14:02 2006
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To: stefan@fafoe.narf.at
From: "M. Warner Losh" <imp@bsdimp.com>
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Cc: freebsd-hackers@freebsd.org, joerg@britannica.bec.de
Subject: Re: different behaviour on fbsd and linux
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In message: <20060218174216.GC578@wombat.fafoe.narf.at>
            Stefan Farfeleder <stefan@fafoe.narf.at> writes:
: On Sat, Feb 18, 2006 at 06:21:52PM +0100, joerg@britannica.bec.de wrote:
: > On Sat, Feb 18, 2006 at 06:17:18PM +0100, Divacky Roman wrote:
: > >       execl("/bin/ls", NULL);
: > 
: > This is wrong. You must specify arg0 != NULL (POSIX says so) and you
: > must NULL-terminate the *following* list.
: > 
: > E.g.:
: > 	execl("/bin/ls", "/bin/ls", NULL);
: > is what you want to do.
: 
: execl("/bin/ls", "/bin/ls", (char *)NULL); as NULL might expand to an
: integer 0.

This is one of the times that the difference is important, since
this function is a varadic one, and you must always cast when passing
through varadic args.

Warner