From: Joe Buck <Joe.Buck@synopsys.COM>
To: Hiroshi Fujishima <hiroshi.fujishima@gmail.com>
Cc: Eric Botcazou <ebotcazou@libertysurf.fr>, gcc@gcc.gnu.org
Subject: Re: isinf
Date: Wed, 13 Jul 2005 23:29:00 -0000 [thread overview]
Message-ID: <20050713232903.GA14174@synopsys.com> (raw)
In-Reply-To: <7c64vee1qg.fsf@gmail.com>
On Thu, Jul 14, 2005 at 08:16:07AM +0900, Hiroshi Fujishima wrote:
> Eric Botcazou <ebotcazou@libertysurf.fr> writes:
>
> >> The configure script which is included in rrdtool[1] checks whether
> >> the system has isinf() as below.
> >>
> >> #include <math.h>
> >> int
> >> main ()
> >> {
> >> float f = 0.0; isinf(f)
> >> ;
> >> return 0;
> >> }
> >
> > The test is clearly fragile. Assigning the return value of isinf to a
> > variable should be sufficient for 4.0.x at -O0.
>
> Yes, I contact rrdtool maintainer. Thank you.
Best to make it a global variable, to guard against dead code elimination.
next prev parent reply other threads:[~2005-07-13 23:29 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-13 17:07 isinf Hiroshi Fujishima
2005-07-13 19:08 ` isinf Eric Botcazou
2005-07-13 22:32 ` isinf Hiroshi Fujishima
2005-07-13 22:59 ` isinf Eric Botcazou
2005-07-13 23:17 ` isinf Hiroshi Fujishima
2005-07-13 23:29 ` Joe Buck [this message]
2005-07-13 23:39 ` isinf Dale Johannesen
2005-07-13 23:48 ` isinf Hiroshi Fujishima
2005-07-14 6:27 ` isinf Eric Botcazou
2005-07-14 6:52 ` isinf Michael Veksler
2005-07-14 7:33 ` isinf Eric Botcazou
2005-07-14 7:56 ` isinf Michael Veksler
2005-07-14 8:59 ` isinf Andreas Schwab
2005-07-14 9:10 ` isinf Eric Botcazou
2005-07-14 9:27 ` isinf Hiroshi Fujishima
2005-07-14 9:35 ` isinf Jakub Jelinek
2005-07-14 9:47 ` isinf Andreas Schwab
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