#0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
        tid = <optimized out>
        ret = 0
        pd = <optimized out>
        old_mask = {__val = {140024987302528}}
        ret = <optimized out>
        pd = <optimized out>
        old_mask = <optimized out>
        ret = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        __private = <optimized out>
        __oldval = <optimized out>
#1  __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
No locals.
#2  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
No locals.
#3  0x00007f5a1b83c406 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#4  0x00007f5a1b82287c in __GI_abort () at ./stdlib/abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x20, sa_sigaction = 0x20}, sa_mask = {__val = {94016287093104, 94016287093110, 140024986781056, 94016286947888, 0, 50975617251, 0, 140722398122792, 4860685168072215552, 5, 18446744073709550840, 11, 94016270090244, 425, 94016270090259, 94016287053760}}, sa_flags = 462026611, sa_restorer = 0x5581df62fa30}
#5  0x00007f5a1b82279b in __assert_fail_base (fmt=0x7f5a1b9b9f68 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x5581de61c013 "false", file=file@entry=0x5581de61c004 "../src/picom.c", line=line@entry=425, function=function@entry=0x5581de61de00 <__PRETTY_FUNCTION__.24> "destroy_backend") at ./assert/assert.c:92
        str = 0x5581df653170 "S\366\035X\005"
        total = 4096
#6  0x00007f5a1b833b86 in __assert_fail (assertion=assertion@entry=0x5581de61c013 "false", file=file@entry=0x5581de61c004 "../src/picom.c", line=line@entry=425, function=function@entry=0x5581de61de00 <__PRETTY_FUNCTION__.24> "destroy_backend") at ./assert/assert.c:101
No locals.
#7  0x00005581de5db57e in destroy_backend (ps=ps@entry=0x5581df645d00) at ../src/picom.c:425
        w = 0x5581df64b010
        __tmp = 0x5581df64b2d0
        __mptr = <optimized out>
        __PRETTY_FUNCTION__ = "destroy_backend"
        __func__ = "destroy_backend"
#8  0x00005581de5de497 in configure_root (ps=0x5581df645d00) at ../src/picom.c:602
        r = 0x5581df647b10
        has_root_change = <optimized out>
        top_w = <optimized out>
        r = <optimized out>
        __func__ = <optimized out>
        has_root_change = <optimized out>
        __PRETTY_FUNCTION__ = <optimized out>
        top_w = <optimized out>
        __e = <optimized out>
        __r = <optimized out>
        i = <optimized out>
#9  handle_root_flags (ps=0x5581df645d00) at ../src/picom.c:665
No locals.
#10 handle_pending_updates (loop=<optimized out>, ps=0x5581df645d00) at ../src/picom.c:1430
        e = 0x0
        __func__ = "handle_pending_updates"
#11 0x00005581de5e141c in draw_callback_impl (revents=<optimized out>, ps=0x5581df645d00, loop=0x7f5a1bf52720 <default_loop_struct>) at ../src/picom.c:1460
        fade_running = false
        animation = false
        was_redirected = <optimized out>
        bottom = <optimized out>
        __func__ = <optimized out>
        fade_running = <optimized out>
        animation = <optimized out>
        was_redirected = <optimized out>
        bottom = <optimized out>
        w = <optimized out>
        __tmp = <optimized out>
        __mptr = <optimized out>
        __mptr = <optimized out>
        _ = <optimized out>
        __mptr = <optimized out>
        w = <optimized out>
        paint = <optimized out>
#12 draw_callback (loop=0x7f5a1bf52720 <default_loop_struct>, w=0x5581df645d90, revents=<optimized out>) at ../src/picom.c:1550
        ps = 0x5581df645d00
#13 0x00007f5a1bf46773 in ev_invoke_pending (loop=0x7f5a1bf52720 <default_loop_struct>) at ev.c:3770
        p = <optimized out>
#14 0x00007f5a1bf4a041 in ev_run (flags=0, loop=0x7f5a1bf52720 <default_loop_struct>) at ev.c:4190
        __PRETTY_FUNCTION__ = "ev_run"
        waittime = <optimized out>
        sleeptime = <optimized out>
        prev_mn_now = <optimized out>
        to = <optimized out>
        to = <optimized out>
#15 ev_run (loop=0x7f5a1bf52720 <default_loop_struct>, flags=flags@entry=0) at ev.c:4021
        __PRETTY_FUNCTION__ = "ev_run"
        waittime = <optimized out>
        sleeptime = <optimized out>
        prev_mn_now = <optimized out>
        to = <optimized out>
        to = <optimized out>
#16 0x00005581de5d9d3d in session_run (ps=<optimized out>) at ../src/picom.c:2465
No locals.
#17 main (argc=<optimized out>, argv=<optimized out>) at ../src/picom.c:2567
        dpy = 0x5581df630990
        exit_code = 0
        config_file = <optimized out>
        all_xerrors = <optimized out>
        need_fork = false
        pfds = {-547169888, 21889}
        quit = <optimized out>
        ret_code = <optimized out>
        pid_file = <optimized out>
        __func__ = "main"