bug#60237: 30.0.50; tree sitter core dumps when I edebug view a node

[Yuan Fu <casouri@gmail.com>]

> On Feb 24, 2023, at 11:55 PM, Eli Zaretskii <eliz@gnu.org> wrote:
> 
>> From: Yuan Fu <casouri@gmail.com>
>> Date: Fri, 24 Feb 2023 15:29:15 -0800
>> Cc: eliz@gnu.org,
>> 60237@debbugs.gnu.org
>> 
>> Maybe it will help us understand the problem better, so here is the
>> backtrace for the infinite loop. I’m not sure why treesit_delete_parser
>> would trigger gc, as it just calls two tree_sitter functions:
>> 
>> void
>> treesit_delete_parser (struct Lisp_TS_Parser *lisp_parser)
>> {
>>  ts_tree_delete (lisp_parser->tree);
>>  ts_parser_delete (lisp_parser->parser);
>> }
> 
> According to the backtrace, it's the other way around: Emacs called
> some function via funcall, and funcall decided it was a good time to
> do a GC.  Then GC called treesit_delete_parser, presumably because
> that parser object was no longer in use?

Ah, right. I forgot it’s not a callstack.

Yuan