Re: Possible miscompilation issue with floating point operations

[Sébastien Villemot <sebastien@debian.org>]

Le jeudi 11 février 2016 à 09:11 +0100, Aurelien Jarno a écrit :
> On 2016-02-10 14:14, Sébastien Villemot wrote:
> > [Please Cc me on replies, I'm not subscribed to the list]
> > 
> > Dear mips porters,
> > 
> > I attach a C source code that, when compiled with gcc-5, crashes with
> > "Illegal instruction" on mips, while it works correctly when compiled
> > with gcc-4.9 [tested on minkus.debian.org].
> > 
> > The problem looks like a miscompilation (the code only does some basic
> > floating-point operations), but it was pointed out by Julien Cristau
> > that it could also be a kernel issue (since floating point instructions
> > are emulated on Debian mips hardware).
> 
> This is actually a kernel issue, which has been fixed by this patch:
> 
> https://git.kernel.org/linus/e4553573b37c3f72533683cb5f3a1ad300b18d37
> 
> We are working on getting the fix deployed on the build daemons.

Great, thanks for your feedback and for your work on this.

If possible, please keep me (and Dirk in cc) informed about the
resolution of this issue (or is there a bug open?).

-- 
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