bug#70385: Crash in note_fringe_highlight

[Vladimir Kazanov]

Hi Juri,

This must be related to the recent patch introducing the function.

Can you reliably reproduce the crash?

On Sun, 14 Apr 2024 at 17:18, Juri Linkov <juri@linkov.net> wrote:
>
> Hopefully this backtrace could help to find where is the bug:
>
> Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
> 0x00005555556120fe in note_fringe_highlight (part=<optimized out>, 
> y=<optimized out>, x=<optimized out>, window=XIL(0x5555564aa62d)) at 
> xdisp.c:35762
> 35762     struct glyph *glyph = MATRIX_ROW_GLYPH_START (w->current_matrix, 
> vpos);
>
> (gdb) bt
> #0  0x00005555556120fe in note_fringe_highlight (part=<optimized out>, 
> y=<optimized out>, x=<optimized out>, window=XIL(0x5555564aa62d)) at 
> xdisp.c:35762
> #1  note_mouse_highlight (f=0x5555564aa198, x=<optimized out>, y=<optimized 
> out>) at xdisp.c:36017
> #2  0x000055555568afd0 in XTframe_up_to_date (f=0x5555564aa198) at 
> xterm.c:7633
> #3  0x0000555555743903 in garbage_collect () at alloc.c:6587
> #4  0x0000555555766c65 in maybe_gc () at lisp.h:5891
> #5  Ffuncall (nargs=3, args=0x7fffffff7cd0) at eval.c:3017
> #6  0x00007fffdfc5eae6 in F70726f6a6563742d7472792d7663_project_try_vc_0 () 
> at project-5477de5a-135e3ef0.eln
> #7  0x0000555555766bb7 in Ffuncall (nargs=2, args=0x7fffffff7e30) at 
> eval.c:3022
> #8  0x0000555555765adb in run_hook_with_args (nargs=2, args=0x7fffffff7e30, 
> funcall=0x555555766ac0 <Ffuncall>) at eval.c:2881
> #9  0x0000555555766bb7 in Ffuncall (nargs=3, args=0x7fffffff7e28) at 
> eval.c:3022
> #10 0x00007fffdfc5d5fe in 
> F70726f6a6563742d2d66696e642d696e2d6469726563746f7279_project__find_in_directory_0
>  () at project-5477de5a-135e3ef0.eln
> #11 0x0000555555766bb7 in Ffuncall (nargs=2, args=0x7fffffff7ea0) at 
> eval.c:3022
> #12 0x00007fffdfc5d405 in F70726f6a6563742d63757272656e74_project_current_0 
> () at project-5477de5a-135e3ef0.eln
> #13 0x0000555555766bb7 in Ffuncall (nargs=1, args=0x7fffffff7f58) at 
> eval.c:3022
> #14 0x00007fffdfc6761a in 
> F70726f6a6563742d6d6f64652d6c696e652d666f726d6174_project_mode_line_format_0 
> () at project-5477de5a-135e3ef0.eln
> #15 0x000055555576a516 in eval_sub (form=<optimized out>) at lisp.h:2242
> #16 0x000055555576c9c4 in Feval (form=XIL(0x55555700d1b3), lexical=<optimized 
> out>) at eval.c:2389
> #17 0x0000555555766bb7 in Ffuncall (nargs=nargs@entry=3, 
> args=args@entry=0x7fffffff8230) at eval.c:3022
> #18 0x00005555555cd15f in funcall_with_backtraces (nargs=nargs@entry=3, 
> args=args@entry=0x7fffffff8230) at xdisp.c:3081
> #19 0x0000555555765361 in internal_condition_case_n 
> (bfun=bfun@entry=0x5555555cd130 <funcall_with_backtraces>, 
> nargs=nargs@entry=3, args=args@entry=0x7fffffff8230, 
> handlers=handlers@entry=XIL(0x30), hfun=hfun@entry=0x5555555e14d0 
> <dsafe_eval_handler>) at eval.c:1617
> #20 0x00005555555ce7d2 in dsafe__call (inhibit_quit=inhibit_quit@entry=true, 
> f=0x5555555cd130 <funcall_with_backtraces>, nargs=nargs@entry=3, 
> args=args@entry=0x7fffffff8230) at lisp.h:1191
> #21 0x00005555555fd701 in dsafe__call (args=0x7fffffff8230, nargs=3, 
> f=<optimized out>, inhibit_quit=true) at xdisp.c:3056
> #22 dsafe_eval (sexpr=<optimized out>) at xdisp.c:3103
> #23 display_mode_element (it=0x7fffffff83d0, depth=4, field_width=0, 
> precision=-39, elt=<optimized out>, props=XIL(0), risky=false) at 
> xdisp.c:27876
> #24 0x00005555555fd862 in display_mode_element (it=0x7fffffff83d0, depth=1, 
> field_width=0, precision=0, elt=<optimized out>, props=XIL(0), risky=false) 
> at lisp.h:1538
> #25 0x00005555555ff020 in display_mode_line (w=w@entry=0x5555564aa410, 
> face_id=MODE_LINE_ACTIVE_FACE_ID, format=XIL(0x7fffeff37a4b)) at lisp.h:1191
> #26 0x00005555556010be in display_mode_lines (w=w@entry=0x5555564aa410) at 
> lisp.h:751
> #27 0x0000555555616722 in redisplay_window (window=<optimized out>, 
> just_this_one_p=<optimized out>) at xdisp.c:20921
> #28 0x000055555561a513 in redisplay_window_0 
> (window=window@entry=XIL(0x5555564aa415)) at xdisp.c:18012
> #29 0x000055555576520c in internal_condition_case_1 
> (bfun=bfun@entry=0x55555561a4e0 <redisplay_window_0>, 
> arg=arg@entry=XIL(0x5555564aa415), handlers=<optimized out>, 
> hfun=hfun@entry=0x5555555d0e60 <redisplay_window_error>) at eval.c:1561
> #30 0x00005555555ce379 in redisplay_windows (window=XIL(0x5555564aa415)) at 
> xdisp.c:17981
> #31 0x00005555556021b1 in redisplay_internal () at xdisp.c:17381
> #32 0x000055555560387d in redisplay_preserve_echo_area 
> (from_where=from_where@entry=8) at xdisp.c:17744
> #33 0x00005555556eb27e in detect_input_pending_run_timers 
> (do_display=do_display@entry=true) at keyboard.c:11555
> #34 0x00005555557c7798 in wait_reading_process_output 
> (time_limit=time_limit@entry=82, nsecs=nsecs@entry=0, 
> read_kbd=read_kbd@entry=-1, do_display=do_display@entry=true, 
> wait_for_cell=wait_for_cell@entry=XIL(0), wait_proc=wait_proc@entry=0x0, 
> just_wait_proc=<optimized out>) at process.c:5839
> #35 0x00005555555bd354 in sit_for (timeout=timeout@entry=make_fixnum(82), 
> reading=reading@entry=true, display_option=display_option@entry=1) at 
> lisp.h:1191
> #36 0x00005555556e5404 in read_char (commandflag=1, map=XIL(0x555565074e43), 
> prev_event=XIL(0), used_mouse_menu=0x7fffffffde9b, end_time=0x0) at 
> lisp.h:1225
> #37 0x00005555556e7161 in read_key_sequence (keybuf=0x7fffffffdff0, 
> prompt=XIL(0), dont_downcase_last=<optimized out>, 
> can_return_switch_frame=true, fix_current_buffer=true, 
> prevent_redisplay=<optimized out>, disable_text_conversion_p=false) at 
> keyboard.c:10722
> #38 0x00005555556e8f8f in command_loop_1 () at lisp.h:1191
> #39 0x0000555555765177 in internal_condition_case 
> (bfun=bfun@entry=0x5555556e8dc0 <command_loop_1>, 
> handlers=handlers@entry=XIL(0x90), hfun=hfun@entry=0x5555556dd2d0 
> <cmd_error>) at eval.c:1537
> #40 0x00005555556d51ea in command_loop_2 (handlers=handlers@entry=XIL(0x90)) 
> at keyboard.c:1167
> #41 0x00005555557650b9 in internal_catch (tag=tag@entry=XIL(0x10740), 
> func=func@entry=0x5555556d51c0 <command_loop_2>, arg=arg@entry=XIL(0x90)) at 
> eval.c:1217
> #42 0x00005555556d5186 in command_loop () at lisp.h:1191
> #43 0x00005555556dce35 in recursive_edit_1 () at keyboard.c:753
> #44 0x00005555556dd1e4 in Frecursive_edit () at keyboard.c:836
> #45 0x00005555555b23f1 in main (argc=<optimized out>, argv=<optimized out>) 
> at emacs.c:2618
>
> Lisp Backtrace:
> "Automatic GC" (0x0)
> "cl-find-if" (0xffff7cd8)
> "project-try-vc" (0xffff7e38)
> "run-hook-with-args-until-success" (0xffff7e30)
> "project--find-in-directory" (0xffff7ea8)
> "project-current" (0xffff7f60)
> "project-mode-line-format" (0xffff8030)
> "eval" (0xffff8238)
> "redisplay_internal (C function)" (0x0)
>
>
>


-- 
Regards,

Vladimir Kazanov