Comment 4 for bug 479081

The following stacktrace might me more useful (the crash seems to happen in libical.so.0.43.0):

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f44ef6c8910 (LWP 8023)]
icalparameter_get_partstat (param=0x0) at /build/buildd/libical-0.43/obj-x86_64-linux-gnu/src/libical/icalderivedparameter.c:1338
1338 /build/buildd/libical-0.43/obj-x86_64-linux-gnu/src/libical/icalderivedparameter.c: No such file or directory.
 in /build/buildd/libical-0.43/obj-x86_64-linux-gnu/src/libical/icalderivedparameter.c
(gdb) bt
#0 icalparameter_get_partstat (param=0x0) at /build/buildd/libical-0.43/obj-x86_64-linux-gnu/src/libical/icalderivedparameter.c:1338
#1 0x000000000042ae62 in check_owner_partstatus_for_declined (backend=<value optimized out>, icalcomp=0x15baa40) at e-cal-backend-exchange-calendar.c:719
#2 0x000000000042f325 in receive_objects (backend=0x1472bf0, cal=<value optimized out>, calobj=<value optimized out>) at e-cal-backend-exchange-calendar.c:1689
#3 0x00007f4503d127d6 in e_cal_backend_sync_receive_objects () from /usr/lib/libedata-cal-1.2.so.6
#4 0x00007f4503d128ca in ?? () from /usr/lib/libedata-cal-1.2.so.6
#5 0x00007f44fde1ad80 in ORBit_small_invoke_adaptor () from /usr/lib/libORBit-2.so.0
#6 0x00007f44fde2b13a in ?? () from /usr/lib/libORBit-2.so.0
#7 0x00007f44fde2b76a in ?? () from /usr/lib/libORBit-2.so.0
#8 0x00007f44fde13dcf in giop_thread_queue_process () from /usr/lib/libORBit-2.so.0
#9 0x00007f44fde14178 in ?? () from /usr/lib/libORBit-2.so.0
#10 0x00007f44fc9e6142 in ?? () from /lib/libglib-2.0.so.0
#11 0x00007f44fc9e4b44 in ?? () from /lib/libglib-2.0.so.0
#12 0x00007f4502a95a04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#13 0x00007f44fc6f080d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#14 0x0000000000000000 in ?? ()