db Xephyr
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This GDB was configured as "x86_64-pc-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) run :1
Starting program: /usr/bin/Xephyr :1
[Thread debugging using libthread_db enabled]
[New Thread 46935657794784 (LWP 19529)]
Extended Input Devices not yet supported. Impelement it at line 625 in kinput.c
Could not init font path element /usr/share/fonts/TTF/, removing from list!
Could not init font path element /usr/share/fonts/OTF, removing from list!

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 46935657794784 (LWP 19529)]
0x0000000000000000 in ?? ()
(gdb) bt full
#0  0x0000000000000000 in ?? ()
No symbol table info available.
#1  0x00000000006c118f in AnimCurRealizeCursor (pScreen=0x920640, pCursor=0x9fd8f0) at animcur.c:268
        as = (AnimCurScreenPtr) 0x9350e0
        ret = 9570752
#2  0x0000000000449204 in AllocGlyphCursor (source=<value optimized out>, sourceChar=<value optimized out>, mask=<value optimized out>, maskChar=1, foreRed=<value optimized out>,
    foreGreen=<value optimized out>, foreBlue=0, backRed=4294967295, backGreen=4294967295, backBlue=4294967295, ppCurs=0x7fff9c955850, client=0x91e790) at cursor.c:407
        sourcefont = <value optimized out>
        maskfont = <value optimized out>
        srcbits = (unsigned char *) 0x9fd7d0 ""
        mskbits = (unsigned char *) 0x9e8d60 "\017ð"
        cm = {width = 16, height = 16, xhot = 7, yhot = 7}
        res = <value optimized out>
        bits = <value optimized out>
        pCurs = (CursorPtr) 0x9fd8f0
        nscr = 0
        pscr = (ScreenPtr) 0x920340
        pShare = <value optimized out>
#3  0x0000000000449523 in CreateRootCursor (pfilename=0x71cb92 "cursor", glyph=0) at cursor.c:449
        curs = <value optimized out>
        err = <value optimized out>
        fontID = 60
#4  0x000000000043909b in main (argc=2, argv=0x7fff9c9559b8, envp=<value optimized out>) at main.c:411
        pScreen = <value optimized out>
        i = 1
        error = 0
        xauthfile = <value optimized out>
        alwaysCheckForInput = {0, 1}
#5  0x00002ab00f13e374 in __libc_start_main (main=0x438ce0 <main>, argc=2, ubp_av=0x7fff9c9559b8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>,
    stack_end=0x7fff9c9559a8) at libc-start.c:238
        result = <value optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {46935640034208, -69218629046717621, 0, 140735820421552, 0, 0, -69126323565368405, -69176091808935836}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0,
      0x71caa0, 0x7fff9c9559b8}, data = {prev = 0x0, cleanup = 0x0, canceltype = 7457440}}}
        not_first_call = <value optimized out>
#6  0x000000000041f2d9 in _start ()
No symbol table info available.
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00000000006c118f in AnimCurRealizeCursor (pScreen=0x920640, pCursor=0x9fd8f0) at animcur.c:268
#2  0x0000000000449204 in AllocGlyphCursor (source=<value optimized out>, sourceChar=<value optimized out>, mask=<value optimized out>, maskChar=1, foreRed=<value optimized out>,
    foreGreen=<value optimized out>, foreBlue=0, backRed=4294967295, backGreen=4294967295, backBlue=4294967295, ppCurs=0x7fff9c955850, client=0x91e790) at cursor.c:407
#3  0x0000000000449523 in CreateRootCursor (pfilename=0x71cb92 "cursor", glyph=0) at cursor.c:449
#4  0x000000000043909b in main (argc=2, argv=0x7fff9c9559b8, envp=<value optimized out>) at main.c:411
#5  0x00002ab00f13e374 in __libc_start_main (main=0x438ce0 <main>, argc=2, ubp_av=0x7fff9c9559b8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>,
    stack_end=0x7fff9c9559a8) at libc-start.c:238
#6  0x000000000041f2d9 in _start ()