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Bug#583858: libc6-i686: causes segfaults

On Mon, May 31, 2010 at 11:13:03PM +0200, Aurelien Jarno wrote:
> On Mon, May 31, 2010 at 09:53:45PM +0200, Stefan Fritsch wrote:
> > Hi,
> > 
> > I can reproduce this. I have attached a stacktrace and part of the 
> > update log which shows that the segfaults start while configuring 
> > locales (though probably that this is just the first package with a 
> > postinstall after configuring libc6-i686).
> > 
> > If you have ideas how I could help further, just ask.
> > 
> Thanks for the extra information. It seems SSE4.2 related, that's
> probably why I am not able to reproduce the issue. I'll try to find a
> Core i7 machine to debug the issue.

I have been able to find a machine to reproduce the issue. I have found
that the issue is not present when eglibc is built with gcc-4.4, so this
looks like a miscompilation.

I have switched i386 to gcc-4.3, with the hopes that the issue affecting
some Pentium 4 models when eglibc is built with gcc-4.4 is now gone.

Aurelien Jarno	                        GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net

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