Bug#394311: libgl1-mesa-dri: i965_dri.so miscompiled with current gcc

[Ben Hutchings]

On Sat, 2006-10-21 at 12:08 -0400, Ryan Richter wrote:
> On Sat, Oct 21, 2006 at 10:18:41AM +0200, Michel Dänzer wrote:
> > On Fri, 2006-10-20 at 12:47 -0400, ryan at tau.solarneutrino.net wrote:
> > > Package: libgl1-mesa-dri
> > > Version: 6.5.1-0.2
> > > Severity: normal
> > > 
> > > The current build contains a faulty i965_dri.so causing all GL clients
> > > to crash and lock up the display.  This is apparently caused by a
> > > miscompilation with gcc-4.1.  Rebuilding with gcc-3.4 fixes the problem.
> > 
> > Ben, do you happen to know whether this was built with
> > -fno-strict-aliasing? If not, that might be worth a try, as the Mesa
> > code generally isn't strict aliasing safe.
> 
> I can't find -fno-strict-aliasing anywhere in configs/debian*, so I
> don't think anything is built with that.

I didn't modify any of the build options, so I suppose I can't have used
-fno-strict-aliasing.  Unfortunately pbuilder doesn't log (or I have not
configured it to, if that's possible).

You had better try that because I don't have any machine with an i965 to
test on.

Ben.

-- 
Ben Hutchings -- ben at decadentplace.org.uk shortened to ben at decadent.org.uk
If you've signed my GPG key, please send a signature on and to the new uid.
In a hierarchy, every employee tends to rise to his level of incompetence.
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