bug#66068: 30.0.50; xwidget-webkit-browse-url makes Emacs abort

[Po Lu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Stephen Berman <stephen.berman@gmx.net> writes:

> On Mon, 18 Sep 2023 22:11:31 +0800 Po Lu <luangruo@yahoo.com> wrote:
>
>> Stephen Berman <stephen.berman@gmx.net>
>>
>>> (gdb) up 0
>>> #0 x_error_quitter (display=0x555555ead980, event=0x7fffffffc950)
>>>     at /home/steve/src/emacs/emacs-master/src/xterm.c:26905
>>> 26905	{
>>> (gdb) p *error
>>> $1 = {void (const char *, ...)} 0x55555575ae68 <error>
>>>
>>> FWIW, I get the same output when I run Emacs in gdb with -xrm
>>> "emacs.synchronous: true", as requested by Eli.
>>
>> My apologies, I intended to ask for:
>>
>>   (gdb) p *event
>
> No problem:
>
> (gdb) r -Q -xrm "emacs.synchronous: true"
> [...]
> (gdb) frame 0
> #0  x_error_quitter (display=0x555555ead980, event=0x7fffffffc930)
>     at /home/steve/src/emacs/emacs-master/src/xterm.c:26905
> 26905	{
> (gdb) p *event
> $1 = {
>   type = 0,
>   display = 0x555555ead980,
>   resourceid = 62914833,
>   serial = 3527,
>   error_code = 168 '\250',
>   request_code = 151 '\227',
>   minor_code = 32 ' '
> }

Would you please send the backtrace from this as well?  The request code
does not match that of any core request or extension on your display,
and the backtrace you previously enclosed was not produced from an Emacs
running synchronously.

TIA.