Hello all, I cannot understand why, but reverting nlinum to version 1.7 fixed this. stable nlinum version for me: http://git.savannah.gnu.org/cgit/emacs/elpa.git/commit/?id=e885224c70f5fc03b23590304dd0fd21524d27e1 Also I couldn't figure out how to reproduce this issue on emacs -Q. But here are some observations (on emacs 25.3): - I started this bug saying that I can reproduce this crash only on the company CAD built emacs 25.3. But turns out that the crash happens on my build of emacs-25 branch that I had done a long time back, only when running emacs, not emacsclient. - Crash happened only when I loaded nlinum (not linum) AND had my config call the below modi/blend-linum function in wrapper function in window-setup-hook. - Couldn't recreate crash if I commented out the lines calling that function, *or* the lines loading nlinum in my config. - Even if I commented out the call to modi/blend-linum, emacs 25.3 does not crash, but the line numbers look BAD (see this gifv to see what I mean: https://i.imgur.com/8npahiz.gifv). That is with current line number highlight enabled in nlinum. - The crash AND visual artifact issue went away on reverted to nlinum 1.7 without having to comment out the call to modi/blend-linum, on emacs 25.3. ===== (defun modi/blend-linum () "Set the linum foreground face to that of `font-lock-comment-face' and background color to that of the theme." (interactive) (set-face-attribute 'linum nil :height 0.9 :foreground (if (string= (face-foreground 'font-lock-comment-face) "unspecified-fg") "#8f8f8f" (face-foreground 'font-lock-comment-face)) :background (if (string= (face-background 'default) "unspecified-bg") "#282828" (face-background 'default)))) ===== **I couldn't reproduce the visual artifact issues or crash on emacs 26.x+.** Appendix: I generate my theme-loading function 'load-theme/smyx' (that loads my custom theme smyx). That is the wrapper fn I referred above, that's called in window-setup-hook. That wrapper fn calls modi/blend-linum. Relevant part from my config[1]. [1]: https://github.com/kaushalmodi/.emacs.d/blob/1e37e3502ed1337420d7fb0db7f940c52694bdca/setup-files/setup-visual.el#L157-L221 On Mon, Oct 30, 2017 at 10:17 AM Kaushal Modi wrote: > The CAD department built 25.3 again, this time, with libotf. But I still > get the segmentation fault. See the backtrace below. The backtrace looks > different this time though.. "xdisp.c: No such file or directory"!? > > Emacs version: GNU Emacs 25.3.1 (x86_64-unknown-linux-gnu, GTK+ Version > 2.24.23) > of 2017-10-30, built using commit . > > ./configure options: > --prefix=/cad/adi/apps/gnu/linux/x86_64/6/local/emacs/25.3 --with-modules > > Features: > XPM JPEG TIFF GIF PNG RSVG SOUND DBUS GCONF NOTIFY ACL LIBSELINUX GNUTLS > LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS GTK2 X11 MODULES > > > ===== > > Starting program: > /cad/adi/apps/gnu/linux/x86_64/6/local/emacs/25.3/bin/emacs > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/lib64/libthread_db.so.1". > [New Thread 0x7fffef071700 (LWP 10664)] > > Thread 1 "emacs" received signal SIGSEGV, Segmentation fault. > 0x000000000043d101 in append_glyph (it=0x7fffffff2390) at xdisp.c:25880 > 25880 xdisp.c: No such file or directory. > (gdb) bt > #0 0x000000000043d101 in append_glyph (it=0x7fffffff2390) at xdisp.c:25880 > #1 x_produce_glyphs (it=0x7fffffff2390) at xdisp.c:27175 > #2 0x0000000000452032 in display_line (it=0x7fffffff2390) at xdisp.c:20676 > #3 0x0000000000457868 in try_window (window=18793157, pos=..., flags=1) > at xdisp.c:17251 > #4 0x0000000000460e41 in redisplay_window (window=18793157, > just_this_one_p=false) > at xdisp.c:16700 > #5 0x0000000000463b36 in redisplay_window_0 (window=) at > xdisp.c:14491 > #6 0x000000000055e7c6 in internal_condition_case_1 (bfun=0x463b10 > , > arg=18793157, handlers=, hfun=0x429b40 > ) > at eval.c:1339 > #7 0x000000000044612e in redisplay_windows (window=) at > xdisp.c:14471 > #8 0x000000000045cfd5 in redisplay_internal () at xdisp.c:14031 > #9 0x00000000004f5299 in read_char (commandflag=1, map=109811619, > prev_event=0, > used_mouse_menu=0x7fffffffb11f, end_time=0x0) at keyboard.c:2482 > #10 0x00000000004f90c0 in read_key_sequence (keybuf=0x7fffffffb190, > prompt=0, > dont_downcase_last=false, can_return_switch_frame=true, > fix_current_buffer=true, > prevent_redisplay=false, bufsize=30) at keyboard.c:9068 > #11 0x00000000004fa3ba in command_loop_1 () at keyboard.c:1370 > #12 0x000000000055e82a in internal_condition_case (bfun=0x4fa1f0 > , > handlers=, hfun=0x4f8200 ) at eval.c:1315 > #13 0x00000000004f81ec in command_loop_2 (ignore=) at > keyboard.c:1112 > #14 0x000000000055e8b8 in internal_catch (tag=, > func=0x4f81d0 , arg=0) at eval.c:1080 > #15 0x00000000004f7f67 in command_loop () at keyboard.c:1091 > #16 0x00000000004f7ff5 in recursive_edit_1 () at keyboard.c:697 > #17 0x00000000004f8135 in Frecursive_edit () at keyboard.c:768 > #18 0x00000000004e997e in main (argc=, argv= out>) at emacs.c:1629 > > -- > > Kaushal Modi > -- Kaushal Modi