From: Warner Losh <imp@bsdimp.com>
To: Ronald Natalie <ron@ronnatalie.com>
Cc: TUHS main list <tuhs@minnie.tuhs.org>
Subject: Re: [TUHS] LSX on the PDP-11/03 (LSI-11)
Date: Sun, 31 May 2020 11:43:46 -0600 [thread overview]
Message-ID: <CANCZdfrpUd8JTAzf07xFu=j+TQyuXzzeHtO93BFv6YJMZGgp1w@mail.gmail.com> (raw)
In-Reply-To: <193c770d408ee131dbaa9a07dba6f068.squirrel@squirrelmail.tuffmail.net>
[-- Attachment #1: Type: text/plain, Size: 1507 bytes --]
On Sun, May 31, 2020 at 6:34 AM <ron@ronnatalie.com> wrote:
>
> > Anyway, I've tried compiling Hello World on LSX, and I get "1: External
> > definition syntax" error. Some help would be nice, but more generally, is
> > anyone on this list more than vaguely familiar with LSX, or 6th Edition
> > itself?
> >
> > void main () {
> > printf("Hello World!");
> > }
> >
> > It seems that the 7th Edition was the beginning of the standard library
> in
> > C, and that this is missing in LSX. I'm not sure if printf is an
> intrinsic
> > function in (6th Edition) C, or if it's from a library.
> >
>
> First off, VOID MAIN is not legal in any standard version of C. Even when
> the language allows implementation defined extensions to the main
> signature, it must still return int.
>
> If you have a later version of language supported, you have to define
> printf rather than allowing it default define as an int returning
> function.
>
> Add #include <stdio.h>
>
Or, alternatively, LSX is really old. The compiler there likely doesn't
support 'void'.
From the lsx part of tuhs:
# cp /dev/tty8 addr.c
main() {
int a;
printf("main address: %u (0%o)\n", main, main);
printf("stack address: %u (0%o)\n", &a, &a);
printf("heap address: %u (0%o)\n", sbrk(0), sbrk(0));
}
^D
# cc addr.c
# a.out
main address: 16410 (040032)
stack address: 40934 (0117746)
heap address: 17920 (043000)
None of the disks appear to have a /usr/include. The only .h files look
like they were from the kernel.
Warner
[-- Attachment #2: Type: text/html, Size: 2209 bytes --]
next prev parent reply other threads:[~2020-05-31 17:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-31 6:26 Paul Riley
2020-05-31 12:34 ` ron
2020-05-31 17:43 ` Warner Losh [this message]
2020-06-01 16:41 ` Heinz Lycklama
2020-05-31 13:50 Paul Ruizendaal
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CANCZdfrpUd8JTAzf07xFu=j+TQyuXzzeHtO93BFv6YJMZGgp1w@mail.gmail.com' \
--to=imp@bsdimp.com \
--cc=ron@ronnatalie.com \
--cc=tuhs@minnie.tuhs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).