From owner-freebsd-hackers  Sat Sep 28 09:54:38 1996
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Date: Sun, 29 Sep 1996 02:51:26 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199609281651.CAA00660@godzilla.zeta.org.au>
To: FreeBSD-hackers@FreeBSD.org, guido@gvr.win.tue.nl
Subject: Re: stack
Sender: owner-hackers@FreeBSD.org
X-Loop: FreeBSD.org
Precedence: bulk

>When I allocate something on the stack, isn't it supposed to be completely
>zero?

Certainly not.

>like:
>main(int argc, char **argv) {
>	char buf[1000];
>
>...
>}
>
>Then buf should be zero, or am I missing something here?

Stack variables in main() are often zero under multi-tasking systems
because the system starts processes with clean pages for security
reasons and nothing has used the stack yet.

Bruce