Re: [ANNOUNCEMENT] GDB BuildBot

On Wed, 2015-01-21 at 17:53 -0500, Sergio Durigan Junior wrote:
> First, thanks to Mark Wielaard for setting up a Debian Wheezy x86_64
> machine as one of our buildslaves!

BTW. I saw more spurious failures on this setup than on the other
buildbot slaves. After lots of digging it turns out that all released
versions of dejagnu have a bug that causes spurious fails in some cases
on SMP machines...

The patch to fix that was posted back in 2005, and was picked up by
fedora in 2006. Which explains why I could reproduce it on my Fedora or
RHEL setups. But at least Debian based distros don't have this patch
yet, since it is not in the latest 1.5.1 dejagnu release yet.

It is in upstream dejagnu git now:
https://lists.gnu.org/archive/html/dejagnu/2011-03/msg00019.html

Full writeup is in the Debian bug report:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776362

If you are running a buildbot slave (or just make gdb-check) and run a
machine with multiple cores you might want to check that you have the
above patch applied to prevent some spurious FAILs.

Cheers,

Mark