Re: weird segfault crash

[Perry E. Metzger]

On 9/1/21 10:30, Ben Mezger wrote:
> Are you able to run with lldb --file /path/to/emacs/bin and see the
> traceback with bt? I am unable to test this out atm.

Running under LLDB gives me:

Process 85909 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = 
EXC_BAD_ACCESS (code=1, address=0x2488cc8fb)
    frame #0: 0x0000000100227a2b Emacs`keyremap_step.cold.2 at 
keyboard.c:2208:29 [opt]
   2205        }
   2206
   2207      /* Terminate Emacs in batch mode if at eof.  */
-> 2208      if (noninteractive && FIXNUMP (c) && XFIXNUM (c) < 0)
   2209        Fkill_emacs (make_fixnum (1));
   2210
   2211      if (FIXNUMP (c))
Target 1: (Emacs) stopped.

Doing a backtrace gives me:

(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = 
EXC_BAD_ACCESS (code=1, address=0x2488cc8fb)
  * frame #0: 0x0000000100227a2b Emacs`keyremap_step.cold.2 at 
keyboard.c:2208:29 [opt]
    frame #1: 0x00000001000db18a Emacs`keyremap_step [inlined] 
SYMBOL_NAME at lisp.h:0 [opt]
    frame #2: 0x00000001000db182 Emacs`keyremap_step at keyboard.c:9193 
[opt]
    frame #3: 0x00000001000db08c 
Emacs`keyremap_step(keybuf=0x00007ffeefbff190, fkey=0x00007ffeefbff038, 
input=1, doit=true, diff=0x00007ffeefbff0b8, prompt=0x0000000000000000) 
at keyboard.c:9218 [opt]
    frame #4: 0x00000001000cad9f 
Emacs`read_key_sequence(keybuf=<unavailable>, prompt=0x0000000000000000, 
dont_downcase_last=false, can_return_switch_frame=true, 
fix_current_buffer=true, prevent_redisplay=<unavailable>) at 
keyboard.c:10103:11 [opt]
    frame #5: 0x00000001000c871c Emacs`command_loop_1 at 
keyboard.c:1376:15 [opt]
    frame #6: 0x00000001001521af 
Emacs`internal_condition_case(bfun=(Emacs`command_loop_1 at 
keyboard.c:1262), handlers=0x0000000000000090, hfun=(Emacs`cmd_error at 
keyboard.c:925)) at eval.c:1478:25 [opt]
    frame #7: 0x00000001000c81fe 
Emacs`command_loop_2(handlers=0x0000000000000090) at keyboard.c:1117:11 
[opt]
    frame #8: 0x000000010015173e 
Emacs`internal_catch(tag=0x000000000000d9e0, func=(Emacs`command_loop_2 
at keyboard.c:1113), arg=0x0000000000000090) at eval.c:1198:25 [opt]
    frame #9: 0x00000001002277c8 Emacs`recursive_edit_1.cold.1 at 
keyboard.c:1095:2 [opt]
    frame #10: 0x00000001000c7a9c Emacs`recursive_edit_1 [inlined] 
command_loop at keyboard.c:1092:5 [opt]
    frame #11: 0x00000001000c7a97 Emacs`recursive_edit_1 at 
keyboard.c:720 [opt]
    frame #12: 0x00000001000c7c2b Emacs`Frecursive_edit at 
keyboard.c:792:3 [opt]
    frame #13: 0x00000001000c6c5e Emacs`main(argc=<unavailable>, 
argv=0x00007ffeefbff5a0) at emacs.c:2310:3 [opt]
    frame #14: 0x00007fff20548f3d libdyld.dylib`start + 1
(lldb)

Perry