Loaded symbols for /usr/lib/libxfce4menu-0.1.so.0
0x00007fa8fbaaf743 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=3377)
    at ../sysdeps/unix/sysv/linux/poll.c:87
87      ../sysdeps/unix/sysv/linux/poll.c: Datei oder Verzeichnis nicht gefunden.
        in ../sysdeps/unix/sysv/linux/poll.c
(gdb) break gdk_x_error
Function "gdk_x_error" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (gdk_x_error) pending.
(gdb) c
Continuing.

Program exited with code 01.
(gdb)