[Mono-dev] Mono 2.0 and FreeBSD
romain at blogreen.org
Mon Dec 8 09:02:16 EST 2008
[Note to Geoff Norton in CC]
I saw a message  from you about Mono working on FreeBSD so I put
you in CC since you may have some relevant information to provide ;-)
[End of note]
The BSD# project  aims to bring Mono 2.0 on the FreeBSD operating
system. While Mono is already available on this platform , it is
quite outdated: the latests available version is 184.108.40.206.
Updating to the latest version is unfortunately not as easy as
expected: basically, mono builds without incident, but not all programs
are working correctly. Regression tests are causing trouble, so I guess
they have to pass before we can try to see what is okay and what is not.
In the past few weeks, I tried to track down the mono subversion
tree to get to the commit that broke NullReferenceException down: the
test mono/tests/exception.exe pass with <=mono-220.127.116.11 but either ABRT
or hangs-on with more recent version of mono. I stopped my tests with the
version of 2006-10-31 (rev. 67196) from the trunk where the problem is
still present. As far I as understand, the development did not took
place in trunk or patches where applied for the release since
mono-1.2.5 was tagged many month after this date.
I am therefore still not able to understand what is happening and
I am so trying to get more info at the source. I have put the result of
running exception.exe here . The program [3.1] hangs consuming CPU
time until it gets killed.
I am not sure about the gdb backtrace [3.2]: I followed the
instructions about debugging  but I have weird results such as:
> #3 0x00000000 in ?? ()
> #4 0x00000000 in ?? ()
> #5 0x00000000 in ?? ()
> #6 0x00000001 in ?? ()
> #7 0x00000000 in ?? ()
... which I don't think is good (too much 0x00000000)...
This is on FreeBSD 7.1-PRERELEASE i386 with mono-2.0.1 [3.3].
Any idea for a better backtrace is welcomed. Any hint is welcomed.
Any branch of mono to checkout and test too. If required, I can even
provide an SSH connection to a FreeBSD box and assistance to a Mono-guru
to hack and fix this bug (Okay, I think you understood that I _really_
want this to work on FreeBSD!).
I hope that mixing the BSD# team's knowledge of FreeBSD and your
knowledge of Mono internals will result in having a working Mono 2.0 on
With kind regards,
on behalf of the BSD# Project.
Romain Tartière <romain at blogreen.org> http://romain.blogreen.org/
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