GNU bug report logs - #76847
31.0.50; feature/igc: Breakpoint 1, terminate_due_to_signal (sig=sig@entry=11, backtrace_limit=backtrace_limit@entry=40) at ./src/emacs.c:425

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Gregor Zattler <telegraph <at> gmx.net>
Cc: 76847 <at> debbugs.gnu.org
Subject: bug#76847: 31.0.50; feature/igc: Breakpoint 1, terminate_due_to_signal (sig=sig <at> entry=11, backtrace_limit=backtrace_limit <at> entry=40) at ./src/emacs.c:425
Date: Sat, 08 Mar 2025 12:27:31 +0200

> Date: Fri, 07 Mar 2025 23:46:50 +0100
> From:  Gregor Zattler via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> Dear Emacs developers, I just typed into
> an email reply when Emacs stopped
> working.
> 
> Infos regarding this Emacs binary and
> the GDB output below.
> 
> The GDB session is still running on this
> laptop.
> 
> #0  terminate_due_to_signal (sig=sig <at> entry=11, backtrace_limit=backtrace_limit <at> entry=40) at ./src/emacs.c:425
> #1  0x00005555555b39ec in handle_fatal_signal (sig=11) at ./src/sysdep.c:1793
> #2  deliver_thread_signal (handler=<optimized out>, sig=11) at ./src/sysdep.c:1785
> #3  deliver_fatal_thread_signal (sig=11) at ./src/sysdep.c:1805
> #4  handle_sigsegv (sig=11, siginfo=0x555555b17430 <sigsegv_stack+64496>, arg=<optimized out>) at ./src/sysdep.c:1943
> #5  0x00007ffff3cfc050 in <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
> #6  0x00007ffff3cfc267 in kill () at /lib/x86_64-linux-gnu/libc.so.6
> #7  0x00005555559b30f4 in sigHandle ()
> #8  0x00007ffff3cfc050 in <signal handler called> () at /lib/x86_64-linux-gnu/libc.so.6
> #9  indirect_function (object=object <at> entry=XIL(0x7fffcd16d9f0)) at ./src/lisp.h:1160
> #10 0x0000555555787f23 in get_keymap (object=object <at> entry=XIL(0x7fffcd16d9f0), autoload=autoload <at> entry=true, error_if_not_keymap=false) at ./src/keymap.c:200

What is this object, which is the 1st argument of get_keymap?  Can you
display it using xtype and/or pp?

> #23 0x0000555555821f5f in Ffuncall (nargs=nargs <at> entry=2, args=args <at> entry=0x7fffffffc660) at ./src/eval.c:3114
> #24 0x000055555577b8ce in read_char (commandflag=1, map=Python Exception <class 'gdb.error'>: value has been optimized out
> , map <at> entry=XIL(0x7fffe518777b), prev_event=Python Exception <class 'gdb.error'>: value has been optimized out
> , used_mouse_menu=used_mouse_menu <at> entry=0x7fffffffcb0b, end_time=end_time <at> entry=0x0) at ./src/keyboard.c:3272

This seems to indicate read_char called some input method:

      /* Call the input method.  */
      tem = calln (Vinput_method_function, c);

What is the value of Vinput_method_function?  Can you show its value
in human-readable form using xtype and/or pp?

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