Re: [CRYPTO]: Miscompiling sha256.c by gcc 3.2.3 and arch pentium3,4

[James Morris]

On Fri, 30 Jan 2004, R CHAN wrote:

> 2.6.2-rc2 sha256.c is miscompiled with gcc 3.2.3.
> (User space is RedHat 3ES.)
> 
> Just an observation:
> 
> gcc 3.2.3 is miscompiling sha256.c when using
> -O2 -march=pentium3
> or pentium4.
> 
> gcc 3.3.x is ok, or the problem disappears
> if I use arch=i686 or reduce the optimisation level to -O2.
> 
> Sympthoms are all the sha256 test vectors fail.
> If I extract the guts of the file to compile in user space
> the same problem occurs.

Have you noticed if this happens for any of the other crypto algorithms?



- James
-- 
James Morris
<jmorris@xxxxxxxxxx>


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