% lldb -c ~/firefox.core -- /usr/local/bin/firefox
(lldb) target create "/usr/local/bin/firefox" --core "/home/grahamperrin/firefox.core"
Core file '/home/grahamperrin/firefox.core' (x86_64) was loaded.
warning: This version of LLDB has no plugin for the language "assembler". Inspection of frame variables will be limited.
(lldb) bt
* thread #1, name = 'Renderer', stop reason = signal SIGSEGV
  * frame #0: 0x0000292e79f7a95a libc.so.7`__sys_thr_kill at thr_kill.S:4
    frame #1: 0x0000292e79ee8e24 libc.so.7`__raise(s=11) at raise.c:52:10
    frame #2: 0x0000292ea9298532 libxul.so`nsProfileLock::FatalSignalHandler(int, __siginfo*, void*) + 242
    frame #3: 0x0000292ea9c8e2b7 libxul.so`WasmTrapHandler(int, __siginfo*, void*) + 327
    frame #4: 0x0000292e79396fec libthr.so.3`handle_signal(actp=0x0000292f3441db80, sig=11, info=0x0000292f3441df70, ucp=0x0000292f3441dc00) at thr_sig.c:301:3
    frame #5: 0x0000292e79396579 libthr.so.3`thr_sighandler(sig=11, info=0x0000292f3441df70, _ucp=0x0000292f3441dc00) at thr_sig.c:246:2
(lldb) q
% ls -hln ~/firefox.core
-rw-------  1 1002  1002   2.8G 26 Feb 08:59 /home/grahamperrin/firefox.core
% date ; uname -aKU
Sun 26 Feb 2023 10:29:56 GMT
FreeBSD mowa219-gjp4-8570p-freebsd 14.0-CURRENT FreeBSD 14.0-CURRENT #33 main-n261014-cd406ac94d8b: Sun Feb 19 01:35:14 GMT 2023     grahamperrin@mowa219-gjp4-8570p-freebsd:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG amd64 1400081 1400081
% pkg info -x firefox
firefox-110.0_3,2
%