>> > At point cmcheckmagic, ¿abort? 1. MagicWrap 1, curY 3, vs. 3 - 1. Now >> tty has 3 rows, 14 cols > > So you are saying that the terminal lies to us? It has 3 rows, but > somehow wraps the cursor to the 4th row? What are the window and > frame dimensions at this point? I don't know enough to say whether the terminal is providing wrong numbers. But it seems that the positions and terminal dimensions aren't wrong, they're just outdated. They were right a moment ago (i.e. the terminal was really as large as reported) but I was resizing the window during a slow operation (GC) that was trying to display a message due to garbage-collection-messages t, and it seems that the GC message is using outdated information about the terminal size. That's my hypothesis. I have reproduced this in a more drastic way, e.g. the cursor in line 14 and the terminal being 4. At point cmcheckmagic, ¿abort? 1. MagicWrap 1, curY 13, vs. 4 - 1. Now tty has 4 rows, 80 cols > What are the window and > frame dimensions at this point? (I'm using the example mentioned above: 13, vs. 4 - 1). The frame seems 4 lines 80 columns. I'm not sure how to obtain the window dimensions from gdb, since there are several fields. Here are two attempts to get it, but total_cols/total_lines are 0 so it seems I'm not looking at the right fields. (gdb) bt #0 terminate_due_to_signal (sig=6, backtrace_limit=40) at emacs.c:443 #1 0x00005555556bdde1 in emacs_abort () at sysdep.c:2391 #2 0x0000555555669c8e in cmcheckmagic (tty=0x5555620ec360) at cm.c:124 #3 0x000055555566e1a0 in tty_write_glyphs (f=0x555562caa780, string=0x55555fb81720, len=80) at term.c:819 #4 0x0000555555678534 in write_glyphs (f=0x555562caa780, string=0x55555fb80820, len=80) at terminal.c:163 #5 0x0000555555591958 in update_frame_line (f=0x555562caa780, vpos=13, updating_menu_p=false) at dispnew.c:5321 #6 0x0000555555590a43 in update_frame_1 (f=0x555562caa780, force_p=true, inhibit_id_p=true, set_cursor_p=true, updating_menu_p=false) at dispnew.c:4980 #7 0x000055555558cfad in update_frame (f=0x555562caa780, force_p=true, inhibit_hairy_id_p=true) at dispnew.c:3346 #8 0x00005555555ca441 in echo_area_display (update_frame_p=true) at xdisp.c:13487 #9 0x00005555555c63fb in message3_nolog (m=XIL(0x55555fcf7e54)) at xdisp.c:12385 #10 0x00005555555c64a7 in message1_nolog (m=0x55555586f976 "Garbage collecting...") at xdisp.c:12413 #11 0x0000555555732a80 in garbage_collect () at alloc.c:6587 #12 0x0000555555732817 in maybe_garbage_collect () at alloc.c:6507 #13 0x0000555555769a95 in maybe_gc () at /w/emacs/src/lisp.h:5927 #14 0x000055555576f4d7 in eval_sub (form=XIL(0x5555616dda13)) at eval.c:2502 #15 0x000055555576a6f5 in Fprogn (body=XIL(0)) at eval.c:439 #16 0x000055555576a725 in prog_ignore (body=XIL(0x5555616dd8f3)) at eval.c:450 #17 0x000055555576c30a in Fwhile (args=XIL(0x5555616dd803)) at eval.c:1130 #18 0x000055555576f82d in eval_sub (form=XIL(0x5555616dd7f3)) at eval.c:2549 #19 0x000055555576a6f5 in Fprogn (body=XIL(0x5555616dd923)) at eval.c:439 #20 0x000055555576beb8 in FletX (args=XIL(0x5555616dd7a3)) at eval.c:1042 #21 0x000055555576f82d in eval_sub (form=XIL(0x5555616dd793)) at eval.c:2549 (gdb) frame 3 #3 0x000055555566e1a0 in tty_write_glyphs (f=0x555562caa780, string=0x55555fb81720, len=80) at term.c:819 (gdb) p *f $1 = { header = { size = 4611686018595348501 }, name = XIL(0x55555ffbf4a4), icon_name = XIL(0), […] text_cols = 80, text_lines = 4, text_width = 80, text_height = 4, total_cols = 80, total_lines = 4, pixel_width = 80, pixel_height = 4, new_width = -1, new_height = -1, […] (gdb) p *((struct window*) f->selected_window) $6 = { header = { size = 6152702861785432064 }, frame = XIL(0x55), next = XIL(0x5562caa9a5000000), prev = XIL(0x556252b675000055), parent = XIL(0xfff21ef0c7000055), normal_lines = XIL(0xfff2ba75bf00007f), normal_cols = XIL(0x1a00007f), new_total = XIL(0), new_normal = XIL(0x1a000000), new_pixel = XIL(0x5559e3af55000000), contents = XIL(0x5559e3af55000055), old_buffer = XIL(0x555f92c855000055), start = XIL(0x5559d0c41d000055), pointm = XIL(0x55604735d5000055), old_pointm = XIL(0xa000055), temslot = XIL(0), vertical_scroll_bar = XIL(0x30000000), vertical_scroll_bar_type = XIL(0), horizontal_scroll_bar = XIL(0x30000000), horizontal_scroll_bar_type = XIL(0), display_table = XIL(0), dedicated = XIL(0), combination_limit = XIL(0x5562913c43000000), window_parameters = XIL(0x30000055), cursor_type = XIL(0x555fcf7c94000000), mode_line_help_echo = XIL(0x5562966770000055), current_matrix = 0x5562a39930000055, desired_matrix = 0x55641a3233000055, prev_buffers = XIL(0x55), next_buffers = XIL(0x3cb000000), use_time = 3019898880, sequence_number = 3103784960, change_stamp = 117440512, pixel_left = 0, pixel_top = 117440512, left_col = 1342177280, top_line = 100663296, pixel_width = 100663296, pixel_height = 335544320, old_pixel_width = 100663296, old_pixel_height = 318767104, old_body_pixel_width = 1342177280, old_body_pixel_height = 100663296, total_cols = 0, total_lines = 0, hscroll = 0, min_hscroll = 0, hscroll_whole = 0, last_modified = 0, last_overlay_modified = 4144676995072, last_point = 3548213411840, last_mark = 0, base_line_number = 0, base_line_pos = -16777216, column_number_displayed = 72057594071482367, nrows_scale_factor = 16777216, ncols_scale_factor = 150994944, cursor = { x = 16777216, --Type for more, q to quit, c to continue without paging-- y = 150994944, hpos = 0, vpos = 0 }, phys_cursor = { x = 0, y = 0, hpos = 0, vpos = 0 }, output_cursor = { x = 0, y = 0, hpos = 150994944, vpos = -16777216 }, last_cursor_vpos = -1, left_fringe_width = 16777215, right_fringe_width = 0, left_margin_cols = -16777216, right_margin_cols = -1, scroll_bar_width = 33554431, scroll_bar_height = -16777216, mode_line_height = -1, header_line_height = -2080374785, tab_line_height = 352, window_end_pos = 1441151881060548608, window_end_vpos = 260, mini = false, horizontal = false, update_mode_line = false, last_had_star = false, start_at_line_beg = false, force_start = false, optional_new_start = false, phys_cursor_on_p = false, cursor_off_p = false, last_cursor_off_p = false, must_be_updated_p = false, pseudo_window_p = false, fringes_outside_margins = false, fringes_persistent = false, scroll_bars_persistent = false, window_end_valid = false, redisplay = false, suspend_auto_hscroll = false, preserve_vscroll_p = false, vscroll = 419430400, window_end_bytepos = 281543696187392 } (gdb) p *((struct window*) f->root_window) $7 = { header = { size = 6152702861785432064 }, frame = XIL(0x55620a01ed000055), next = XIL(0x55), prev = XIL(0), parent = XIL(0xfff2ba41a7000000), normal_lines = XIL(0xfff2ba419f00007f), normal_cols = XIL(0x3600007f), new_total = XIL(0), new_normal = XIL(0x36000000), new_pixel = XIL(0x5562caa9a5000000), contents = XIL(0x55599fab25000055), old_buffer = XIL(0x55), start = XIL(0), pointm = XIL(0), old_pointm = XIL(0x2000000), temslot = XIL(0), vertical_scroll_bar = XIL(0x30000000), vertical_scroll_bar_type = XIL(0), horizontal_scroll_bar = XIL(0x30000000), horizontal_scroll_bar_type = XIL(0), display_table = XIL(0), dedicated = XIL(0), combination_limit = XIL(0), window_parameters = XIL(0x30000000), cursor_type = XIL(0), mode_line_help_echo = XIL(0), current_matrix = 0x0, desired_matrix = 0x555d5785a3000000, prev_buffers = XIL(0x55), next_buffers = XIL(0x290000000), use_time = 3003121664, sequence_number = 100663296, change_stamp = 0, pixel_left = 0, pixel_top = 0, left_col = 1342177280, top_line = 218103808, pixel_width = 1207959552, pixel_height = 805306368, old_pixel_width = 1207959552, old_pixel_height = 788529152, old_body_pixel_width = 1342177280, old_body_pixel_height = 218103808, total_cols = 0, total_lines = 0, hscroll = 0, min_hscroll = 0, hscroll_whole = 36758880256, last_modified = 3741319168, last_overlay_modified = 1599271337984, last_point = 1589456666624, last_mark = 18740150272, base_line_number = 0, base_line_pos = 989855744, column_number_displayed = 72057594054705152, nrows_scale_factor = 0, ncols_scale_factor = 0, cursor = { x = 0, --Type for more, q to quit, c to continue without paging-- y = 0, hpos = 0, vpos = 0 }, phys_cursor = { x = 0, y = 0, hpos = 0, vpos = 0 }, output_cursor = { x = 0, y = 0, hpos = 0, vpos = -16777216 }, last_cursor_vpos = -1, left_fringe_width = 16777215, right_fringe_width = 0, left_margin_cols = -16777216, right_margin_cols = -1, scroll_bar_width = 33554431, scroll_bar_height = -16777216, mode_line_height = -1, header_line_height = 16777215, tab_line_height = 0, window_end_pos = 1152921504606846976, window_end_vpos = 0, mini = false, horizontal = false, update_mode_line = false, last_had_star = false, start_at_line_beg = false, force_start = false, optional_new_start = false, phys_cursor_on_p = false, cursor_off_p = false, last_cursor_off_p = false, must_be_updated_p = false, pseudo_window_p = false, fringes_outside_margins = false, fringes_persistent = false, scroll_bars_persistent = false, window_end_valid = false, redisplay = false, suspend_auto_hscroll = false, preserve_vscroll_p = false, vscroll = 1191182336, window_end_bytepos = 6152702647217422336 } On Fri, 31 May 2024 at 18:18, Eli Zaretskii wrote: > > From: Daniel Clemente > > Date: Fri, 31 May 2024 17:07:45 +0000 > > Cc: 71289@debbugs.gnu.org > > > > > Thanks, but these backtraces are not enough, because they don't > > > explain why was emacs_abort called. We need to see all the values > > > involved in this condition: > > > > > > if (curX (tty) == FrameCols (tty)) > > > { > > > if (!MagicWrap (tty) || curY (tty) >= FrameRows (tty) - 1) > <<<<<<<<<<< > > > emacs_abort (); > > > > > > These were the variables just before emacs_abort, and (abort==1) when > aborting. > > > > At point cmcheckmagic, ¿abort? 0. MagicWrap 1, curY 0, vs. 3 - 1. Now > > tty has 3 rows, 14 cols > > At point cmcheckmagic, ¿abort? 0. MagicWrap 1, curY 1, vs. 3 - 1. Now > > tty has 3 rows, 14 cols > > At point cmcheckmagic, ¿abort? 1. MagicWrap 1, curY 3, vs. 3 - 1. Now > > tty has 3 rows, 14 cols > > So you are saying that the terminal lies to us? It has 3 rows, but > somehow wraps the cursor to the 4th row? What are the window and > frame dimensions at this point? >