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Re: Help wanted testing gcc-3.3 / gcc-snapshot

On Sat, Mar 01, 2003 at 08:03:30PM +0100, Matthias Klose wrote:
> For the upcoming GCC 3.3 release, the compiler collection should be
> tested with real word applications according to the release
> criteria. As many of the real-world applications mentioned on
> 	http://gcc.gnu.org/gcc-3.3/criteria.html
> are part of Debian, it may be useful for Debian to check these even
> before GCC 3.3 is released and becomes the default compiler at least
> on some platforms.

How about XFree86? 3d acceleration has been *broken* on the radeon
family of cards on i386 since xfree86 -5, which was compiled with gcc
3.2. (#178242). -6 is also affected. About a month ago I was able to
duplicate the problem with gcc-snapshot. I then compiled the package
with mainline gcc and GL acceleration began to work. I posted to
gcc@gcc.gnu.org asking for suggestions for tracking down this bug so I
could backport the fix to 3.3, but since I'm not familiar with what
exactly the miscompilation is, nobody was able to help me. IMHO this is
a very severe bug, even though apparently XFree86 4.3 (which is not yet
officially packed) does not cause this miscompilation.

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