Hello, this is another problem with rev. 117587. Starting from this revision (including rev. 117605) emacs compiled with X support segfaults when I run auto-complete[1] tests. Revision 117586 with X support and emacs of revision 117605 compiled without X support work fine. I attached output of gdb for all three cases. Some information about my system: OS: Archlinux x86_64 Compiler: gcc (GCC) 4.9.1 gtk3: 3.12.2 xorg-server: 1.16.0 intel-video: 2.99.914 tmux: 1.9a_122_gf8481f9 rxvt-unicode: 9.20 Configuration options with X support: --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libexecdir=/usr/lib --with-xpm --with-jpeg --with-tiff --with-gif --with-png --with-rsvg --with-x-toolkit=gtk3 --with-xft --with-libotf --with-dbus --with-gsettings --without-sound Configuration options without X support: --prefix=/usr --sysconfdir=/etc --localstatedir=/var --libexecdir=/usr/lib --with-dbus --without-x --with-gsettings --without-sound [1] https://github.com/auto-complete/auto-complete --- WBR, Vladimir Lomov -- The meek shall inherit the earth; the rest of us will go to the stars.