Re: [Tinycc-devel] Bug: unsigned arithmetic on x86-64

[ghe]

> > Hi list,
> >
> > The following code fails with tcc version 0.9.25 on AMD64 (Debian): 
> > srem and squo are correct, but urem and uquo are zero...  The code 
> > works on i386.
>
> Works for me on win64 with latest mob, maybe it was fixed:
>   http://repo.or.cz/w/tinycc.git?a=shortlog;h=refs/heads/mob
>
> Maybe we should release tcc-0.9.26, eventually.
>
> --- grischka

Indeed, it also works for me.  Sorry, I didn't check the latest 
development version before posting...

--ghe

> > int main ()
> > {
> >   unsigned long long int unum, uden, uquo, urem;
> >   long long int snum, sden, squo, srem;
> >
> >   unum = 2111062325329920;
> >   snum = unum;
> >   uden = 52428800;
> >   sden = uden;
> >
> >   uquo = unum / uden;
> >   urem = unum % uden;
> >   squo = snum / sden;
> >   srem = snum % sden;
> >
> >   if (uquo != squo || urem != srem)
> >     {
> >       printf ("BUG:\n");
> >       printf (" %lld != %lld\n", uquo, squo);
> >       printf (" %lld != %lld\n", urem, srem);
> >     }
> >   else
> >     printf ("OK\n");
> > }
> >
> > Thanks,
> >
> > --ghe