Bug 981056

Good nows, this is a compiler bug! Just rebuilding from the srpm fixed it, can you please bump & rebuild ?

strange.. the koji rebuild didn't fix this..

Actually, rebuilding with CFLAGS="-O0 -g" does fix it it seem, so it is a compiler bug...!

Created attachment 800563 [details]
fix

There is a hacky loop through the members of the struct, which won't work if the compiler inserts a padding between them.

Compiling with "CFLAGS=-fno-aggressive-loop-optimizations" fix issue too. The reason is gcc 4.8:
http://gcc.gnu.org/gcc-4.8/changes.html

AFAICS, this still occurs in Fedora 20. With the information provided by Ilya in comment 5, does the patch in comment 4 still make sense?

How responsive is upstream expected to be on this? Would be great if the fix could be applied to the Fedora packages if not.

My patch and Ilya's option are not mutually exclusive. The loop used in the original code can still possibly break, with or without "-fno-aggressive-loop-optimizations", because, as I mentioned, the C standard doesn't guarantee there will be no paddings between the struct's fields (C 2011 (N1570) 6.7.2.1 15, “There may be unnamed padding within a structure object, but not at its beginning.”).

The flag fixes it for gcc 4.8, that's all.

Submitted it upstream, but don't hold your breath, sofia-sip came from Nokia Research.

Upstream bug with references to various other downstream reports: https://sourceforge.net/p/sofia-sip/bugs/121/

sofia-sip-1.12.11-8.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/sofia-sip-1.12.11-8.fc20

sofia-sip-1.12.11-8.fc19 has been submitted as an update for Fedora 19.
https://admin.fedoraproject.org/updates/sofia-sip-1.12.11-8.fc19

Package sofia-sip-1.12.11-8.fc19:
* should fix your issue,
* was pushed to the Fedora 19 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing sofia-sip-1.12.11-8.fc19'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2013-22879/sofia-sip-1.12.11-8.fc19
then log in and leave karma (feedback).

Hmmm, unfortunately with the -8 version from updates-testing, on both Fedora 19 and Fedora 20, the symptoms persist. I'm unable to call my echo test or a landline, the call never "connects".

In build sofia-sip-1.12.11-8.fc19 was added only supplied patch?
Did flag "-fno-aggressive-loop-optimizations" was added to this build?

sofia-sip-1.12.11-7.fc20.x86_64 is still broken.

I manually build sofia-sip master from git and the bug seems solved.

It's because sofia-sip-1.12.11-7.fc20 is not the fixed build. I just installed telepathy-rakia-0.8.0-1.fc20 and sofia-sip-1.12.11-8.fc20 from updates-testing and it worked without problems.

Radist: odd, as 1.12.11-8.fc20 did not work for me (re-tested just now). The call doesn't connect/initiate.

Odd indeed. I just called my desk and my mobile using youmagic.ru as a SIP provider. Both were ok. I reinstalled the system recently, so it shouldn't have any custom packages.

Try rebuilding 1.12.11-8 with CFLAGS="-O0 -g" to see if there is some other optimization issue. When I was digging the sources there were several places with the warnings, maybe the patches should be introduced for all of them.

Also can you check that the error is indeed the same: empty content of all SIP messages (as described here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=729301 ).

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