This bug report will be sent to the Bug-GNU-Emacs mailing list and the GNU bug tracker at debbugs.gnu.org. Please check that the From: line contains a valid email address. After a delay of up to one day, you should receive an acknowledgment at that address. Please write in English if possible, as the Emacs maintainers usually do not have translators for other languages. Please describe exactly what actions triggered the bug, and the precise symptoms of the bug. If you can, give a recipe starting from `emacs -Q': I can't reliably reproduce the bug. All I can say that the auto-indentation thingymajig in cc-mode stops working at random every 5-15 minutes or so. I can get it working again by reloading the file I am editing. When the indentation is broken, pressing enter will leave no indentation space for braces and such. it looks like this if(1) { foo(); bar(); zot(); } when it should look like this if(1) { foo(); bar(); zot(); } I'm pretty sure the indentation was working in some previous version, about two years ago or so, but not in any of the newer versions of Emacs. If Emacs crashed, and you have the Emacs process in the gdb debugger, please include the output from the following gdb commands: `bt full' and `xbacktrace'. For information about debugging Emacs, please read the file /usr/share/emacs/24.3/etc/DEBUG. In GNU Emacs 24.3.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.12.2) of 2014-06-11 on var-lib-archbuild-staging-x86_64-jgc Windowing system distributor `The X.Org Foundation', version 11.0.11502000 Configured using: `configure '--prefix=/usr' '--sysconfdir=/etc' '--libexecdir=/usr/lib' '--localstatedir=/var' '--with-x-toolkit=gtk3' '--with-xft' 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4' 'LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro' 'CPPFLAGS=-D_FORTIFY_SOURCE=2'' Important settings: value of $LC_COLLATE: fi_FI.UTF-8 value of $LC_CTYPE: fi_FI.UTF-8 value of $LC_MESSAGES: en_US.UTF-8 value of $LC_MONETARY: fi_FI.UTF-8 value of $LC_NUMERIC: en_US.UTF-8 value of $LC_TIME: en_DK.UTF-8 value of $LANG: en_US.UTF-8 locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Lisp Interaction Minor modes in effect: electric-indent-mode: t cua-mode: t global-subword-mode: t subword-mode: t show-paren-mode: t global-hl-line-mode: t tooltip-mode: t mouse-wheel-mode: t menu-bar-mode: t file-name-shadow-mode: t global-font-lock-mode: t font-lock-mode: t blink-cursor-mode: t auto-composition-mode: t auto-encryption-mode: t auto-compression-mode: t column-number-mode: t line-number-mode: t transient-mark-mode: t Recent input: M-x c o - m C-a C-k C-g M-x r e o p e p o r Recent messages: For information about GNU Emacs and the GNU system, type C-h C-a. Loading /home/fzzy/.emacs.d/session.10ded9d363000140534073900000004430047...done Restored session data Making completion list... [3 times] Quit Making completion list... [2 times] Load-path shadows: None found. Features: (shadow sort gnus-util mail-extr emacsbug message idna format-spec rfc822 mml mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils help-mode easymenu electric preview-latex tex-site auto-loads cc-styles cc-align cc-engine cc-vars cc-defs bison-mode-autoloads glsl-mode-autoloads go-mode-autoloads package cua-base subword bs paren edmacro kmacro hl-line delsel server time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces cus-face macroexp files text-properties overlay sha1 md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind dynamic-setting system-font-setting font-render-setting move-toolbar gtk x-toolkit x multi-tty emacs)