Bus Errors!

Suman_Saraf (ssaraf@hss.hns.com)
Sat, 7 Feb 1998 11:34:01 +0530 (IST)

Sorry for the earlier goof up with the cd thing :-) What I was trying out
is :-

This is a snip from man 7 signal
----------------
A SIGBUS is missing; this is because the 386 hardware does
not generate such a signal, but makes porting from other
architectures unnecessarily difficult.
----------------
Then how come netscape dumps core with a bus error on my 386 running Linux
(when I try to access a Java Enables page)??

I have upgraded my libc with gnumalloc() patch and now it is ok but what I
want to point out is how is a bus error generated in the 1st case on a 386
machine when the man page says otherwise.

And one more question: Do the later x86's generate this signal ?

I tried this program :-

main()
{
long l=1234;
char *c ;
int *i;
c=&l;
c++;
i=&l;
printf("%d\n",i);
printf("%d\n",*i);
i=(int *)c;
printf("%d\n",i);
printf("%d",*i);
}

As fas as my CS theory goes , bus error occurs when I try to access an int
on an odd location. This program dumps core with a bus error on HP-UX and
Solaris and not on Linux .

Any pointers would be greatly appreciated.

Also I would like to know , has anyone ever come across a program on Linux
which dumps core with a SIG_BUS other than netscape ??

--suman

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