bug#70059: 30.0.50; c-ts-mode crashes emacs

[Eli Zaretskii]

> From: Felix <felix.dick@web.de>
> Cc: Andrea Corallo <acorallo@gnu.org>,  70059@debbugs.gnu.org
> Date: Fri, 29 Mar 2024 11:51:06 +0100
> 
> I rebuild it without native-compilation, and it still crashes.
> Backtrace:
> 
> #0  0x000077b79c65c32c in ??? () at /usr/lib/libc.so.6
> #1  0x000077b79c60b6c8 in raise () at /usr/lib/libc.so.6
> #2  0x00005a5a428f94a2 in terminate_due_to_signal ()
> #3  0x00005a5a42933c23 in emacs_abort ()
> #4  0x00005a5a429ec268 in signal_or_quit ()
> #5  0x00005a5a429eb422 in Fsignal ()
> #6  0x00005a5a429eb401 in xsignal ()
> #7  0x00005a5a429e9aa2 in xsignal2 ()
> #8  0x00005a5a429c0865 in wrong_type_argument ()
> #9  0x00005a5a42965e1f in Fexpand_file_name ()
> #10 0x00005a5a42b3d200 in Fdo_auto_save.7873 ()
> #11 0x00005a5a428f9738 in shut_down_emacs ()
> #12 0x00005a5a428f946a in terminate_due_to_signal ()
> #13 0x00005a5a42935924 in handle_sigsegv ()
> #14 0x000077b79c60b770 in <signal handler called> () at /usr/lib/libc.so.6
> #15 0x00005a5a429a57f6 in process_mark_stack ()
> #16 0x00005a5a429a677b in mark_char_table ()
> #17 0x00005a5a429a68c6 in mark_char_table ()
> #18 0x00005a5a429a55bd in process_mark_stack ()
> #19 0x00005a5a429a677b in mark_char_table ()
> #20 0x00005a5a429a68c6 in mark_char_table ()
> #21 0x00005a5a429a55bd in process_mark_stack ()
> #22 0x00005a5a429a677b in mark_char_table ()
> #23 0x00005a5a429a68c6 in mark_char_table ()
> #24 0x00005a5a429a55bd in process_mark_stack ()
> #25 0x00005a5a429a677b in mark_char_table ()
> #26 0x00005a5a429a68c6 in mark_char_table ()
> #27 0x00005a5a429a55bd in process_mark_stack ()
> #28 0x00005a5a429a569b in process_mark_stack ()
> #29 0x00005a5a429a569b in process_mark_stack ()
> #30 0x00005a5a429a569b in process_mark_stack ()
> #31 0x00005a5a429a7b8e in garbage_collect ()
> #32 0x00005a5a429e76e7 in Ffuncall ()
> #33 0x00005a5a42a094f7 in mapcar1 ()
> #34 0x00005a5a42a091bf in Fmapconcat ()
> #35 0x00005a5a42ac9d90 in Ftreesit_pattern_expand ()
> #36 0x00005a5a429e87b3 in funcall_subr ()
> #37 0x00005a5a429e77f6 in Ffuncall ()
> #38 0x00005a5a42a094f7 in mapcar1 ()
> #39 0x00005a5a42a091bf in Fmapconcat ()
> #40 0x00005a5a42ac9d90 in Ftreesit_pattern_expand ()
> #41 0x00005a5a429e87b3 in funcall_subr ()
> #42 0x00005a5a429e77f6 in Ffuncall ()
> #43 0x00005a5a42a094f7 in mapcar1 ()
> #44 0x00005a5a42a091bf in Fmapconcat ()
> #45 0x00005a5a42aca243 in treesit_ensure_query_compiled ()
> #46 0x00005a5a42aca5c0 in Ftreesit_query_capture ()

Then it's strange, since it doesn't happen here.  Does it happen for
you with any C source file, including those in the Emacs source tree?
If this happens only for some files, can you post one such file?

Also, what version of the tree-sitter library are you using, and what
version of the C grammar library?

If you can build the emacs-29 branch, can you try reproducing there?

Yuan, any ideas, based on the backtrace?