Re: gcc/libm floating-point bug?

From: Morten Rodal <morten_at_rodal.no>
Date: Tue, 20 May 2003 18:29:58 +0200
Then we have the same hardware (and laptop for that matter).  Also
make sure you are not running with any optimizations (i.e. use default
CFLAGS; -O -pipe).

On Tue, May 20, 2003 at 12:16:10PM -0400, Jon Lido wrote:
> Well, I do have a P4, and had built everything with -march=pentium4.
> However, rebuilding the kernel and modules with -march=pentium3
> produces the same results.
> 
> Incidentally, my audio hardware is:
> pcm0: <Intel 82801CA (ICH3)> port 0xdc80-0xdcbf,0xd800-0xd8ff irq 11 at device 
> 31.5 on pci0
> pcm0: <Cirrus Logic CS4205 AC97 Codec>
> 
> (Dell Inspiron 8200 laptop)
> 
> -Jon
> 
> On Tuesday 20 May 2003 11:30 am, Morten Rodal wrote:
> > On Tue, May 20, 2003 at 10:25:30AM -0400, Jon Lido wrote:
> > > Where I've noticed the problem is playing when lossy
> > > audio.  When playing MP3s with artsd, xmms, or mpg123, I can get
> > > extremely noisy output (like static), with the audio distorted, but
> > > recognizable underneath.
> >
> > I get the same problem with sound if I compile the kernel sound
> > drivers with the ``CPUTYPE=p4'' (which adds -march=pentium4 to the
> > compiler).  When I went down to ``CPUTYPE=p3'' everything works fine.
> > Wether this is a bug in the math library or with gcc (more likely?) I
> > don't know.

-- 
Morten Rodal


Received on Tue May 20 2003 - 07:30:02 UTC

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