Article View: mod.computers.pyramid
Article #31another c bug?
From: brahms
Date: Fri, 01 Aug 1986 22:48
Date: Fri, 01 Aug 1986 22:48
77 lines
2488 bytes
2488 bytes
The following problem came up while I was trying to compile larn on a
pyramid. I'm curious to know if it is a bug with the Pyramid C compiler
or something that just happens to work on a number of other machines but
not the Pyramid? It appears that the called procedure writes information
on what is believes is the top of the stack. Anyway, to get around it, I
modifed lprintf from larn to included extra arguments such as in
five_int_args below.
Script started on Fri Aug 1 15:39:12 1986
demo: cat t.c
#include <stdio.h>
five_int_args (args, a, b, c, d)
int args, a, b, c, d;
{
int *pargs;
int i;
pargs = &args;
while (*pargs != 0)
printf ("%d : ", *pargs++);
printf ("%d\n", 0);
}
show_int_args (args)
int args;
{
int *pargs;
int i;
pargs = &args;
while (*pargs != 0)
printf ("%d : ", *pargs++);
printf ("%d\n", 0);
}
main()
{
show_int_args (0);
show_int_args (1, 0);
show_int_args (1, 2, 0);
show_int_args (1, 2, 3, 0);
show_int_args (1, 2, 3, 4, 0);
show_int_args (1, 2, 3, 4, 5, 0);
five_int_args (1, 2, 3, 4, 0);
}
demo: cc -o t t.c
demo: t
0
1 : 0
1 : 2 : -1072901880 : 320 : 12 : -1072902016 : 0
1 : 2 : -1072901880 : 0
1 : 2 : -1072901880 : 4 : 0
1 : 2 : -1072901880 : 4 : 5 : 0
1 : 2 : 3 : 4 : 0
demo: what /lib/ccom
/lib/ccom
CCOMP_3.1.9 Mar 19 16:50:26 1986
yaccpar 4.1 (Berkeley) 2/11/83
FLUSH.c 1.2 6/10/81
NEW.c 1.3 6/10/81
UNIT.c 1.2 6/10/81
WRITLN.c 1.2 6/10/81
ERROR.c 1.10 1/10/83
PCEXIT.c 1.1 10/30/80
PCLOSE.c 1.6 1/21/83
PCSTART.c 1.8 1/10/83
PFCLOSE.c 1.3 (Berkeley) 1/21/83
PERROR.c 1.2 1/10/83
PFLUSH.c 1.2 1/21/83
EXCEPT.c 1.3 1/10/83
malloc.c 4.3 (Berkeley) 9/16/83
script done on Fri Aug 1 15:40:23 1986
Technical Details
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!decvax!decwrl!ucbvax!spp5.UUCP!brahms From: brahms@spp5.UUCP.UUCP Newsgroups: mod.computers.pyramid Subject: another c bug? Message-ID: <8608012248.AA06827@spp5.UUCP> Date: Fri, 1-Aug-86 18:48:00 EDT Article-I.D.: spp5.8608012248.AA06827 Posted: Fri Aug 1 18:48:00 1986 Date-Received: Sat, 2-Aug-86 03:21:22 EDT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 77 Approved: info-pyramid@mimsy.umd.edu