#121 Undefined C language feature triggered

[Olivier Crête]

There is a patch at
https://bugzilla.redhat.com/show_bug.cgi?id=981056

[Simon McVittie]

Here is a version of the patch without whitespace damage so git/patch can apply it.

Other downstream references to this bug include:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=729301
https://bugs.launchpad.net/ubuntu/+source/sofia-sip/+bug/1246171
http://lists.freedesktop.org/archives/telepathy/2013-November/006536.html
http://lists.freedesktop.org/archives/telepathy/2013-December/006542.html

[Simon McVittie]

Steps to reproduce:

• compile with gcc 4.8
• various uses of SIP, including running the telepathy-rakia regression tests as described on http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=729301

Expected result:

• tests pass, SIP calls work, etc.

Actual result:

• the symptom I saw in the failing regression tests was that the body of a MESSAGE was 0 bytes long, rather than the expected 5 ("hello")

Workaround:

• gcc -fno-aggressive-loop-optimizations