Thanks for your reply. > On Mon, Jun 24, 2024 at 08:28  Eli Zaretskii wrote: > Thanks, but we need a full GDB backtrace in order to investigate this, since your use case involves a lot of moving parts that are not part of Emacs. Here's GDB output after triggering the crash: Thread 1 "emacs" received signal SIGSEGV, Segmentation fault. Fget (symbol=XIL(0x555555f430d0), propname=XIL(0x6a20)) at /usr/src/debug/emacs/emacs-29.4/src/lisp.h:1152 1152 return p; (gdb) bt full #0 Fget (symbol=XIL(0x555555f430d0), propname=XIL(0x6a20)) at /usr/src/debug/emacs/emacs-29.4/src/lisp.h:1152 propval = propval = #1 Fget (symbol=XIL(0x555555f430d0), propname=XIL(0x6a20)) at /usr/src/debug/emacs/emacs-29.4/src/fns.c:2516 propval = #2 0x0000555555727621 in parse_modifiers (symbol=XIL(0x555555f430d0)) at /usr/src/debug/emacs/emacs-29.4/src/keyboard.c:6897 elements = elements = end = modifiers = unmodified = mask = #3 parse_modifiers (symbol=XIL(0x555555f430d0)) at /usr/src/debug/emacs/emacs-29.4/src/keyboard.c:6888 elements = end = modifiers = unmodified = mask = #4 0x00005555557377b8 in reorder_modifiers (symbol=) at /usr/src/debug/emacs/emacs-29.4/src/keyboard.c:7028 parsed = parsed = #5 access_keymap_1 (map=XIL(0x7ffff23971d3), idx=, t_ok=false, noinherit=false, autoload=true) at /usr/src/debug/emacs/emacs-29.4/src/keymap.c:342 No locals. #6 0x000055555572ce9b in access_keymap (noinherit=false, autoload=true, map=, idx=, t_ok=false) at /usr/src/debug/emacs/emacs-29.4/src/keymap.c:496 val = val = #7 read_char (commandflag=0, map=XIL(0), prev_event=XIL(0), used_mouse_menu=0x0, end_time=0x7fffffffd7c0) at /usr/src/debug/emacs/emacs-29.4/src/keyboard.c:3018 c = local_getcjmp = {{ __jmpbuf = {93825000565504, 4667065109654990781, 1, 4611686019484352512, 2, 140737238796840, 4667065109726293949, 1554282726522023869}, __mask_was_saved = 0, __saved_mask = { __val = {1, 93825000490048, 93825000490048, 2, 93825000490064, 140737488344640, 140737315869326, 140737488344608, 17179869184, 93825015026096, 93825002289856, 0, 140737334369465, 93825000490048, 93825002294160, 1} } }} save_jump = {{ __jmpbuf = {140737488344256, 93825042270568, 65, 93824995310266, 0, 1, 140737488344304, -2652607782311200768}, __mask_was_saved = 1478277908, __saved_mask = { __val = {1, 93825015026096, 140737488344512, 2, 140737488344560, 140737488344496, 140737318847622, 1, 140737318848059, 17910663985227853824, 93211218036, 140737238797520, 93825039174099, 140737488344400, 93824994824941, 1} } }} tem = save = XIL(0x17b9d60) previous_echo_area_message = XIL(0) also_record = XIL(0) reread = false recorded = false polling_stopped_here = false orig_kboard = 0x555555f430d0 retry = jmpcount = #8 0x00005555557f7c92 in read_filtered_event (no_switch_frame=false, ascii_required=false, error_nonascii=false, input_method=, seconds=XIL(0x555558272a9f)) at /usr/src/debug/emacs/emacs-29.4/src/lread.c:702 val = delayed_switch_frame = end_time = { tv_sec = 1719443489, tv_nsec = 949531303 } retry = #9 0x0000555555817c4c in exec_byte_code (fun=XIL(0), args_template=1, nargs=3, args=0x7ffff1200a28) at /usr/src/debug/emacs/emacs-29.4/src/bytecode.c:809 call_nargs = 3 call_fun = count1 = template = val = XIL(0xaaaaabc77570) call_args = 0x7ffff1200a28 original_fun = bytecode = op = type = (unknown: 0x6a20) targets = quitcounter = bc = top = pc = bytestr = XIL(0x6a20) vector = maxdepth = const_length = bytestr_length = vectorp = max_stack = frame_base = fp = 0xaaaaabc77570 bytestr_data = rest = mandatory = 5 nonrest = 10 pushedargs = 0 result = targets = {0x55555581c531 , 0x5555558180bb , 0x5555558180cd , 0x5555558180c4 , 0x555555817a29 , 0x555555817a2d , 0x55555581a4cd , 0x555555818075 , 0x555555819e5d , 0x555555819e54 , 0x555555819e4b , 0x555555819e30 , 0x555555817d05 , 0x555555817d10 , 0x555555817e1a , 0x555555819e39 , 0x55555581a15c , 0x555555819e8a , 0x555555819e81 , 0x555555819e78 , 0x555555817997 , 0x5555558179a0 , 0x55555581a06e , 0x55555581a080 , 0x55555581a053 , 0x55555581a04a , 0x555555817e47 , 0x555555817e3e , 0x555555817ca5 , 0x555555817cb0 , 0x555555819ffc , 0x55555581a05c , 0x555555819e27 , 0x555555819e1e , 0x55555581a126 , 0x55555581a11d , 0x555555817ac3 , 0x555555817ad0 , 0x555555817e2c , 0x55555581a092 , 0x55555581a141 , 0x55555581a138 , 0x55555581a12f , 0x555555817e50 , 0x555555817a6f , 0x555555817a78 , 0x555555819e66 , 0x55555581a14a , 0x55555581a6ca , 0x55555581a701 , 0x55555581a787 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581a1f3 , 0x5555558199b2 , 0x555555819965 , 0x555555819918 , 0x555555819be2 , 0x555555819edc , 0x555555819e93 , 0x555555819b61 , 0x555555819f77 , 0x55555581a165 , 0x555555819b99 , 0x555555819cc5 , 0x5555558197f6 , 0x555555819c67 , 0x555555819cfd , 0x555555819de8 , 0x555555819d71 , 0x5555558192f8 , 0x55555581957b , 0x555555819c31 , 0x55555581952b , 0x5555558194e2 , 0x555555819499 , 0x55555581944c , 0x555555819409 , 0x5555558193c6 , 0x5555558196e3 , 0x55555581967e , 0x555555819619 , 0x5555558195be , 0x555555819798 , 0x55555581984c , 0x55555581929a , 0x55555581923c , 0x555555819726 , 0x555555819167 , 0x5555558191cd , 0x555555819067 , 0x5555558190e7 , 0x555555818ff4 , 0x555555818f3c , 0x555555817d99 , 0x555555818e59 , 0x555555818e0a , 0x555555818d53 , 0x555555818d00 , 0x555555818cca , 0x555555818c8f , 0x555555818f01 , 0x555555818c4c , 0x555555818c14 , 0x55555581c535 , 0x555555818bd9 , 0x555555818b7e , 0x555555818b43 , 0x555555818ae8 , 0x555555818a6a , 0x555555818ab2 , 0x555555817d9d , 0x55555581c535 , 0x555555818a18 , 0x5555558189d9 , 0x5555558189a3 , 0x555555818955 , 0x555555818878 , 0x555555818842 , 0x55555581880c , 0x55555581890c , 0x555555818781 , 0x555555818738 , 0x5555558186fd , 0x5555558186c7 , 0x55555581c535 , 0x55555581a53c , 0x55555581a0a4 , 0x555555819fb7 , 0x555555817f90 , 0x555555817f4e , 0x555555817e59 , 0x555555817e9b , 0x55555581a582 , 0x55555581a00e , 0x55555581a513 , 0x55555581a5fe , 0x55555581a885 , 0x55555581a5ae , 0x55555581a7e6 , 0x55555581a799 , 0x55555581a269 , 0x555555819a2e , 0x55555581c535 , 0x555555818678 , 0x55555581863d , 0x5555558185cd , 0x555555818605 , 0x555555818592 , 0x555555818549 , 0x555555818500 , 0x5555558184a5 , 0x55555581845c , 0x5555558183ee , 0x5555558182d6 , 0x5555558188c3 , 0x5555558182a0 , 0x555555818232 , 0x5555558181c4 , 0x555555818365 , 0x55555581831f , 0x5555558183ab , 0x555555818f8f , 0x555555818e8f , 0x5555558180d6 , 0x55555581814e , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x5555558198aa , 0x555555819376 , 0x555555818da6 , 0x55555581a1a5 , 0x555555818027 , 0x55555581c535 , 0x55555581c535 , 0x555555817fd5 , 0x55555581a464 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581a41f } #10 0x00005555557cd2ed in Ffuncall (nargs=4, args=0x7fffffffda10) at /usr/src/debug/emacs/emacs-29.4/src/eval.c:2999 count = val = #11 0x00005555557623c2 in call3 (fn=XIL(0x5555582280b5), arg1=XIL(0x7ffff239f304), arg2=XIL(0), arg3=XIL(0x30)) at /usr/src/debug/emacs/emacs-29.4/src/lisp.h:3262 No locals. #12 Fall_completions (string=XIL(0x7ffff239f304), collection=XIL(0x5555582280b5), predicate=XIL(0), hide_spaces=XIL(0)) at /usr/src/debug/emacs/emacs-29.4/src/minibuf.c:1869 tail = elt = eltstring = allmatches = type = 0 idx = 0 obsize = 0 bucket = tem = zero = #13 0x0000555555817c4c in exec_byte_code (fun=XIL(0), args_template=1, nargs=3, args=0x7ffff12006f8) at /usr/src/debug/emacs/emacs-29.4/src/bytecode.c:809 call_nargs = 3 call_fun = count1 = template = val = XIL(0xaaaaabc77570) call_args = 0x7ffff12006f8 original_fun = bytecode = op = type = (unknown: 0x6a20) targets = quitcounter = bc = top = pc = bytestr = XIL(0x6a20) vector = maxdepth = const_length = bytestr_length = vectorp = max_stack = frame_base = fp = 0xaaaaabc77570 bytestr_data = rest = mandatory = 5 nonrest = 7 pushedargs = 0 result = targets = {0x55555581c531 , 0x5555558180bb , 0x5555558180cd , 0x5555558180c4 , 0x555555817a29 , 0x555555817a2d , 0x55555581a4cd , 0x555555818075 , 0x555555819e5d , 0x555555819e54 , 0x555555819e4b , 0x555555819e30 , 0x555555817d05 , 0x555555817d10 , 0x555555817e1a , 0x555555819e39 , 0x55555581a15c , 0x555555819e8a , 0x555555819e81 , 0x555555819e78 , 0x555555817997 , 0x5555558179a0 , 0x55555581a06e , 0x55555581a080 , 0x55555581a053 , 0x55555581a04a , 0x555555817e47 , 0x555555817e3e , 0x555555817ca5 , 0x555555817cb0 , 0x555555819ffc , 0x55555581a05c , 0x555555819e27 , 0x555555819e1e , 0x55555581a126 , 0x55555581a11d , 0x555555817ac3 , 0x555555817ad0 , 0x555555817e2c , 0x55555581a092 , 0x55555581a141 , 0x55555581a138 , 0x55555581a12f , 0x555555817e50 , 0x555555817a6f , 0x555555817a78 , 0x555555819e66 , 0x55555581a14a , 0x55555581a6ca , 0x55555581a701 , 0x55555581a787 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581c535 , 0x55555581a1f3 , 0x5555558199b2 , 0x555555819965 , 0x555555819918 , 0x555555819be2 , 0x555555819edc , 0x555555819e93 , 0x555555819b61 , 0x555555819f77 , 0x55555581a165 , 0x555555819b99 , 0x555555819cc5 , 0x5555558197f6 , 0x555555819c67 , 0x555555819cfd , 0x555555819de8 , 0x555555819d71 , 0x5555558192f8 , 0x55555581957b , 0x555555819c31 , 0x55555581952b , 0x5555558194e2 , 0x555555819499 , 0x55555581944c , 0x555555819409 , 0x5555558193c6 , 0x5555558196e3 , 0x55555581967e , 0x555555819619 , 0x5555558195be , 0x555555819798 , 0x55555581984c , 0x55555581929a , 0x55555581923c , 0x555555819726 , 0x555555819167 , 0x5555558191cd , 0x555555819067 , 0x5555558190e7 , 0x555555818ff4 , 0x555555818f3c , 0x555555817d99 , 0x555555818e59 , 0x555555818e0a , 0x555555818d53 , 0x555555818d00 , 0x555555818cca , 0x555555818c8f , 0x555555818f01 , 0x555555818c4c , 0x555555818c14 , 0x55555581c535 , 0x555555818bd9 , 0x555555818b7e , 0x555555818b43 , 0x555555818ae8 , 0x555555818a6a , 0x555555818ab2 , 0x555555817d9d , 0x55555581c535 , 0x555555818a18 , 0x5555558189d9 , 0x5555558189a3 , 0x555555818955 , 0x555555818878 , 0x555555818842 , 0x55555581880c , 0x55555581890c , 0x555555818781