(gdb) bt
#0  0x00000037632e8bdf in poll () from /lib64/libc.so.6
#1  0x00007f514367b185 in wl_display_dispatch_queue (display=0x2429190, queue=0x2429218) at wayland-client.c:1112
#2  0x00007f514367b309 in wl_display_dispatch (display=0x2429190) at wayland-client.c:1190
#3  0x0000000000403a3e in frame_callback_wait (client=0x2429130, done=0x7fff0f83cef4) at weston-test-client-helper.c:73
#4  0x0000000000403b4e in move_client (client=0x2429130, x=-99, y=0) at weston-test-client-helper.c:98
#5  0x00000000004029de in check_client_move (client=0x2429130, x=-99, y=0) at event-test.c:297
#6  0x0000000000402b40 in test_surface_output () at event-test.c:330
#7  0x00000000004048e6 in run_test (t=0x4097a0) at weston-test-runner.c:51
#8  0x00000000004049ca in main (argc=1, argv=0x7fff0f83d108) at weston-test-runner.c:81
(gdb) bt full
#0  0x00000037632e8bdf in poll () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f514367b185 in wl_display_dispatch_queue (display=0x2429190, queue=0x2429218) at wayland-client.c:1112
        pfd = {{fd = 4, events = 1, revents = 0}, {fd = 4206881, events = 0, revents = 0}}
        ret = 84
#2  0x00007f514367b309 in wl_display_dispatch (display=0x2429190) at wayland-client.c:1190
No locals.
#3  0x0000000000403a3e in frame_callback_wait (client=0x2429130, done=0x7fff0f83cef4) at weston-test-client-helper.c:73
        __PRETTY_FUNCTION__ = "frame_callback_wait"
#4  0x0000000000403b4e in move_client (client=0x2429130, x=-99, y=0) at weston-test-client-helper.c:98
        surface = 0x242dbe0
        done = 0
#5  0x00000000004029de in check_client_move (client=0x2429130, x=-99, y=0) at event-test.c:297
        __PRETTY_FUNCTION__ = "check_client_move"
#6  0x0000000000402b40 in test_surface_output () at event-test.c:330
        client = 0x2429130
        x = -99
        y = 0
        __PRETTY_FUNCTION__ = "test_surface_output"
#7  0x00000000004048e6 in run_test (t=0x4097a0) at weston-test-runner.c:51
No locals.
#8  0x00000000004049ca in main (argc=1, argv=0x7fff0f83d108) at weston-test-runner.c:81
        success = 0
        hardfail = 0
        t = 0x4097a0
        pid = 0
        total = 0
        pass = 9
        info = {si_signo = 17, si_errno = 0, si_code = 1, _sifields = {_pad = {31332, 1000, 0, 32767, 260296720, 32767, 9, 0, 1663106656, 55, 1130697928, 32593, 260297078, 32767, 260296984, 32767, 15774463, 0, 4199897, 0, 1, 0, 4227709, 
              0, 13238272, 0, 0, 0}, _kill = {si_pid = 31332, si_uid = 1000}, _timer = {si_tid = 31332, si_overrun = 1000, si_sigval = {sival_int = 0, sival_ptr = 0x7fff00000000}}, _rt = {si_pid = 31332, si_uid = 1000, si_sigval = {
                sival_int = 0, sival_ptr = 0x7fff00000000}}, _sigchld = {si_pid = 31332, si_uid = 1000, si_status = 0, si_utime = 140733453684752, si_stime = 9}, _sigfault = {si_addr = 0x3e800007a64}, _sigpoll = {
              si_band = 4294967327332, si_fd = 0}}}
        __PRETTY_FUNCTION__ = "main"