#0  0x00007fc795cbd4ec in g_type_check_instance_cast ()
   from /usr/lib/libgobject-2.0.so.0
#1  0x000000000045e185 in ?? ()
#2  0x00007fc7950c1264 in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007fc79c9363ea in start_thread () from /lib/libpthread.so.0
#4  0x00007fc794769c6d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()