This is the mail archive of the
gcc-help@gcc.gnu.org
mailing list for the GCC project.
RE: gcc 3.3: long long bug?
- From: "A.R. Ashok Kumar" <ashokar at sankhya dot com>
- To: Lev Assinovsky <LAssinovsky at algorithm dot aelita dot com>
- Cc: John Love-Jensen <eljay at adobe dot com>, Andreas Schwab <schwab at suse dot de>, Eric Botcazou <ebotcazou at libertysurf dot fr>, gcc-bugs at gcc dot gnu dot org, gcc-help at gcc dot gnu dot org
- Date: Mon, 7 Apr 2003 18:55:58 +0530 (IST)
- Subject: RE: gcc 3.3: long long bug?
Hi,
> I think gcc 3.2 (which didn't give me any errors)
> behaves more properly, automatically converting
> rvalue to lvalue. Such behavior also solves
> "long long long ..." problems.
Have you obtained correct result?
For me, the following program gives wrong result(using gcc 2.7.2 on
sparc-sun-solaris2.3).
------
const long long n = 34359738368LL;
int main() {
printf("%ld\n", n);
}
------
Obtained Result: 8
Expected Result: 34359738368
- AshokA-
> > -----Original Message-----
> > From: John Love-Jensen [mailto:eljay at adobe dot com]
> > Sent: Monday, April 07, 2003 5:01 PM
> > To: Andreas Schwab; Eric Botcazou
> > Cc: Lev Assinovsky; gcc-bugs at gcc dot gnu dot org; gcc-help at gcc dot gnu dot org
> > Subject: Re: gcc 3.3: long long bug?
> >
> >
> > Hi Andreas,
> >
> > > |> Append "LL" to the constant.
> > >
> > > That should not be needed.
> >
> > The "LL" should be needed, unless a "long long" is the same size as a
> > "long".
> >
> > The "long long" data type is an extension to the C (ISO 9989)
> > and C++ (ISO
> > 14882) specs. As such, automatically sizing a numeric
> > literal to "long
> > long" (like how a numeric literal that's too big for an "int"
> > becomes an
> > "unsigned int", and then a "long" and then an "unsigned
> > long") could cause
> > problems.
> >
> > Unfortunately, requiring the "LL" suffix causes other headaches.
> >
> > I wonder when we'll have "long long long" (128-bit) and "long
> > long long
> > long" (256-bit) numbers. With accompanying "LLL" and "LLLL" suffixes.
> > *sigh*
> >
> > --Eljay
> >
> >
>