Hi. When debugging emacs from within emacs for bug#57364. Emacs segfaulted. 1. gdb -i=mi --args emacs -q -nw 2. then on the emacs from previous step M-x gdb 'gdb -i=mi --args ./emacs -q -f toggle-debug-on-error --fg-daemon. 3. On emacs from step two. You would need to open two different frames on different DISPLAY's. And Apply specific commands to each one of those two x-frames. {the steps for each frame are detailed on bug#57364} 3. When emacs from steps-two commits suicide. emacs from step one segfaults. Best Regards