Date: Tue, 01 Sep 1998 18:59:45 +0000 From: Mike Smith <mike@smith.net.au> To: John Polstra <jdp@polstra.com> Cc: current@FreeBSD.ORG Subject: Re: ELF binaries size Message-ID: <199809011859.SAA02773@dingo.cdrom.com> In-Reply-To: Your message of "Tue, 01 Sep 1998 18:49:49 MST." <199809020149.SAA16932@austin.polstra.com>
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> > > I don't understand what you're getting at. A program has to be able
> > > to write its data. That's where the variables are.
> >
> > dingo:/tmp>cat a.c
> > char *foo = "test";
> > int bar;
> > void main(void)
> > {
> > foo[0] = 0;
> > }
> > dingo:/tmp>./a.out
> > Bus error (core dumped)
> ...
> > As you can see, 'foo' is in the data segment, and it's pretty
> > clearly read-only.
>
> No, foo is writable. What foo points to is read-only. Foo is in
> the data segment, but what it points to is in the text segment.
Oops, you're quite right. Where's that pointy hat? 8(
--
\\ Sometimes you're ahead, \\ Mike Smith
\\ sometimes you're behind. \\ mike@smith.net.au
\\ The race is long, and in the \\ msmith@freebsd.org
\\ end it's only with yourself. \\ msmith@cdrom.com
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