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Re: glibc regression on alpha with 2.34+



On Sun, Nov 20, 2022 at 01:47:59PM +0100, Frank Scheiner wrote:
> On 20.11.22 10:03, Michael Cree wrote:
> > On Sun, Nov 13, 2022 at 12:45:17AM +0100, John Paul Adrian Glaubitz wrote:
> > > I just noticed that there is a regression in glibc on alpha with version 2.34 or later.
> > > 
> > Interestingly the vast number of the failing tests pass if one builds
> > with a compiler that raises the baseline to EV67.  This has been
> > proposed a number of times in the past for the Debian distribution.
> > I think it is time we did it.  One of our last EV56 users has recently
> > bowed out due to hardware failure and I am only running EV67 hardware.
> 
> I still have the following pre EV67 machines available and in working order:
> 
> * AXPpci 33 (LCA4)
> * AlphaStation 200 (EV4) / 255 (EV45) / 500 (EV56)
> * PWS 500au (EV56)
> * AlphaServer 800 (EV56)
> 
> ...and can provide testing on them. All of them eventually ran Debian

Can you fix the ev4 based bugs in glibc?  If not, I am not interested.

With the usrmerge uploads now depending on a recent libc version Alpha
is now dead in the water.  Nothing can be built.  Thus we have to fix
glibc to continue building.

I am not prepared to fix ev4 issues so if no one else is prepared to
fix them then without a architecture baseline raise this is the end
of Alpha on Debian Ports.

Given that ev67 fixed the glibc test suite failures, and that it is
most likely BWX that is the issue, I am going to work towards
upping the baseline Alpha architecture to include BWX, i.e. ev56, in
Debian ports.  It will probably take me a few days work to rebuild
gcc and glibc with the baseline raised and fix any remaining issues
in glibc.

So if people want the baseline to remain at ev4 you have a few days
to fix all the test suite failures in glibc before I upload the raise
of the architecture baseline.

Cheers
Michael.


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