Bug#671866: gmp: causes gcc ICEs on amd64 and kfreebsd-amd64

Julien Cristau jcristau at debian.org
Wed May 9 11:34:06 CEST 2012

On Wed, May  9, 2012 at 10:04:11 +0200, Torbjorn Granlund wrote:

> "Steve M. Robbins" <steve at sumost.ca> writes:
>   Torbjorn: which emulator caused a problem for GMP in the past?  What
>   was the symptom?  How does the run-time detection get confused by it?
>   Was the GMP patch applied?
> I cannot recall which one it was.  Please search the mailing list
> archive for the last few months.
> I wouldn't say GMP's run-time detection got confused in that particular
> case since it did what it was designed to do.  There, the emulator [as
> configured by the user] claimed "I support AMD64", then "I am a Pentium
> 2".  It was proposed that GMP should distrust the latter claim and trust
> the former claim, and make correct! guesses of which AMD64 instructions
> it is safe to use.  I remain unconvinced that GMP can safely handle such
> situations, and I consider the emulator or its configuration in the
> particular case to be buggy.
Seems to match http://comments.gmane.org/gmane.comp.lib.gmp.bugs/3472
and https://bugzilla.novell.com/show_bug.cgi?id=757852
I'll try and get our qemu-kvm package fixed.  Thanks.


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