Thread 1 "X" received signal SIGABRT, Aborted.
0x00007f0d0bcc5a9e in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f0d0bcc5a9e in raise () from /lib64/libc.so.6
#1  0x00007f0d0bcc6d99 in abort () from /lib64/libc.so.6
#2  0x00007f0d0bd02fdf in ?? () from /lib64/libc.so.6
#3  0x00007f0d0bd090f5 in ?? () from /lib64/libc.so.6
#4  0x00007f0d0bd098ce in ?? () from /lib64/libc.so.6
#5  0x00005617983d906c in _CallCallbacks (pcbl=pcbl@entry=0x5617987c2c18 <ClientStateCallback>, 
    call_data=call_data@entry=0x7ffecde7fab0)
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/dixutils.c:737
#6  0x00005617983d32df in CallCallbacks (call_data=0x7ffecde7fab0, 
    pcbl=0x5617987c2c18 <ClientStateCallback>)
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/include/callback.h:83
#7  CloseDownClient (client=client@entry=0x56179a2f3cd0)
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/dispatch.c:3470
#8  0x00005617983d4078 in Dispatch ()
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/dispatch.c:492
#9  0x00005617983d7d77 in dix_main (argc=12, argv=0x7ffecde7fc88, envp=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/main.c:276
#10 0x00007f0d0bcb31c1 in __libc_start_main () from /lib64/libc.so.6
#11 0x00005617983c210a in _start ()
(gdb) bt full
#0  0x00007f0d0bcc5a9e in raise () from /lib64/libc.so.6                                                                                             
No symbol table info available.                                                                                                                      
#1  0x00007f0d0bcc6d99 in abort () from /lib64/libc.so.6                                                                                             
No symbol table info available.                                                                                                                      
#2  0x00007f0d0bd02fdf in ?? () from /lib64/libc.so.6                                                                                                
No symbol table info available.                                                                                                                      
#3  0x00007f0d0bd090f5 in ?? () from /lib64/libc.so.6                                                                                                
No symbol table info available.                                                                                                                      
#4  0x00007f0d0bd098ce in ?? () from /lib64/libc.so.6                                                                                                
No symbol table info available.                                                                                                                      
#5  0x00005617983d906c in _CallCallbacks (pcbl=pcbl@entry=0x5617987c2c18 <ClientStateCallback>, call_data=call_data@entry=0x7ffecde7fab0)            
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/dixutils.c:737                                                           
        cbl = 0x5617999ea030                                                                                                                         
        cbr = 0x561799a4d890                                                                                                                         
        pcbr = <optimized out>                                                                                                                       
#6  0x00005617983d32df in CallCallbacks (call_data=0x7ffecde7fab0, pcbl=0x5617987c2c18 <ClientStateCallback>)                                        
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/include/callback.h:83
No locals.
#7  CloseDownClient (client=client@entry=0x56179a2f3cd0) at 
/var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/dispatch.c:3470
        clientinfo = {client = 0x56179a2f3cd0, prefix = 0x0, setup = 0x0}
        really_close_down = <optimized out>
#8  0x00005617983d4078 in Dispatch () at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/dispatch.c:492
        result = <optimized out>
        start_tick = 180
#9  0x00005617983d7d77 in dix_main (argc=12, argv=0x7ffecde7fc88, envp=<optimized out>)
    at /var/tmp/portage/x11-base/xorg-server-9999/work/xorg-server-9999/dix/main.c:276
        i = <optimized out>
        alwaysCheckForInput = {0, 1}
#10 0x00007f0d0bcb31c1 in __libc_start_main () from /lib64/libc.so.6
No symbol table info available.
#11 0x00005617983c210a in _start ()
No symbol table info available.