Re: [scratch/igc] 985247b6bee crash on Linux, KDE, Wayland

[Eli Zaretskii <eliz@gnu.org>]

> From: Eval EXEC <execvy@gmail.com>
> Cc: pipcet@protonmail.com,  gerd.moellmann@gmail.com,  emacs-devel@gnu.org
> Date: Fri, 06 Sep 2024 14:34:00 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> >> From: Eval EXEC <execvy@gmail.com>
> >> Cc: pipcet@protonmail.com,  gerd.moellmann@gmail.com,  emacs-devel@gnu.org
> >> Date: Fri, 06 Sep 2024 11:10:15 +0800
> >> 
> >> Eval EXEC <execvy@gmail.com> writes:
> (gdb) frame 10
> #10 0x00000000006919f8 in fix_cons (cons=0x7f08addd06b0, ss=0x7ffc7653e6f8) at /home/exec/Projects/git.savannah.gnu.org/git/emacs/src/igc.c:1751
> 1751        IGC_FIX12_OBJ (ss, &cons->u.s.car);
> (gdb) p *cons
> $3 = {
>   gc_header = {
>     v = 16630752781,
>     gcaligned = 13 '\r'
>   },
>   u = {
>     s = {
>       car = XIL(0x7f0889546b70),
>       u = {
>         cdr = XIL(0x7f08936d87d3),
>         chain = 0x7f08936d87d3
>       }
>     },
>     gcaligned = 112 'p'
>   }
> }
> (gdb) xcons
> Invalid cast.

Try these commands instead:

 (gdb) p *cons
 (gdb) p cons->u.s.car
 (gdb) xtype
 (gdb) xsymbol
 (gdb) p cons->u.s.u.cdr
 (gdb) xtype