#37 segfault while quitting if GUI could not be initialized

[Joerg Wunsch]

If the GUI failed to initialize (e. g. since $DISPLAY
was not set), the tool crashes on exit since it still
attempts to save the GUI state.

gpsim> Error initialising GUI, reverting to cmd-line mode.
gpsim> quit
Segmentation fault (core dumped)
$ gdb gpsim gpsim.core
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This GDB was configured as "i386-marcel-freebsd"...
Core was generated by `gpsim'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/local/lib/libgpsim.so.0...done.
Loaded symbols for /usr/local/lib/libgpsim.so.0
Reading symbols from
/usr/local/lib/libgpsimcli.so.0...done.
Loaded symbols for /usr/local/lib/libgpsimcli.so.0
Reading symbols from
/usr/local/lib/libgpsimgui.so.0...done.
Loaded symbols for /usr/local/lib/libgpsimgui.so.0
Reading symbols from
/usr/local/lib/libgpsim_eXdbm.so.0...done.
Loaded symbols for /usr/local/lib/libgpsim_eXdbm.so.0
Reading symbols from /usr/lib/libstdc++.so.5...done.
Loaded symbols for /usr/lib/libstdc++.so.5
Reading symbols from /usr/local/lib/libpopt.so.0...done.
Loaded symbols for /usr/local/lib/libpopt.so.0
Reading symbols from
/usr/local/lib/libgthread-2.0.so.0...done.
Loaded symbols for /usr/local/lib/libgthread-2.0.so.0
Reading symbols from
/usr/X11R6/lib/libgtkextra-x11-2.0.so.1...done.
Loaded symbols for /usr/X11R6/lib/libgtkextra-x11-2.0.so.1
Reading symbols from
/usr/X11R6/lib/libgtk-x11-2.0.so.0...done.
Loaded symbols for /usr/X11R6/lib/libgtk-x11-2.0.so.0
Reading symbols from
/usr/X11R6/lib/libgdk-x11-2.0.so.0...done.
Loaded symbols for /usr/X11R6/lib/libgdk-x11-2.0.so.0
Reading symbols from /usr/X11R6/lib/libXrandr.so.2...done.
Loaded symbols for /usr/X11R6/lib/libXrandr.so.2
Reading symbols from /usr/X11R6/lib/libXi.so.6...done.
Loaded symbols for /usr/X11R6/lib/libXi.so.6
Reading symbols from
/usr/X11R6/lib/libXinerama.so.1...done.
Loaded symbols for /usr/X11R6/lib/libXinerama.so.1
Reading symbols from /usr/local/lib/libatk-1.0.so.0...done.
Loaded symbols for /usr/local/lib/libatk-1.0.so.0
Reading symbols from
/usr/X11R6/lib/libgdk_pixbuf-2.0.so.0...done.
Loaded symbols for /usr/X11R6/lib/libgdk_pixbuf-2.0.so.0
Reading symbols from
/usr/X11R6/lib/libpangocairo-1.0.so.0...done.
Loaded symbols for /usr/X11R6/lib/libpangocairo-1.0.so.0
Reading symbols from /usr/X11R6/lib/libXcursor.so.1...done.
Loaded symbols for /usr/X11R6/lib/libXcursor.so.1
Reading symbols from /usr/X11R6/lib/libXfixes.so.3...done.
Loaded symbols for /usr/X11R6/lib/libXfixes.so.3
Reading symbols from /usr/local/lib/libcairo.so.2...done.
Loaded symbols for /usr/local/lib/libcairo.so.2
Reading symbols from /usr/local/lib/libpng.so.5...done.
Loaded symbols for /usr/local/lib/libpng.so.5
Reading symbols from
/usr/X11R6/lib/libpangoft2-1.0.so.0...done.
Loaded symbols for /usr/X11R6/lib/libpangoft2-1.0.so.0
Reading symbols from
/usr/X11R6/lib/libfontconfig.so.1...done.
Loaded symbols for /usr/X11R6/lib/libfontconfig.so.1
Reading symbols from /usr/local/lib/libexpat.so.6...done.
Loaded symbols for /usr/local/lib/libexpat.so.6
Reading symbols from
/usr/local/lib/libfreetype.so.9...done.
Loaded symbols for /usr/local/lib/libfreetype.so.9
Reading symbols from /lib/libz.so.3...done.
Loaded symbols for /lib/libz.so.3
Reading symbols from
/usr/X11R6/lib/libpango-1.0.so.0...done.
Loaded symbols for /usr/X11R6/lib/libpango-1.0.so.0
Reading symbols from /usr/X11R6/lib/libXrender.so.1...done.
Loaded symbols for /usr/X11R6/lib/libXrender.so.1
Reading symbols from /usr/X11R6/lib/libX11.so.6...done.
Loaded symbols for /usr/X11R6/lib/libX11.so.6
Reading symbols from /usr/X11R6/lib/libXext.so.6...done.
Loaded symbols for /usr/X11R6/lib/libXext.so.6
Reading symbols from
/usr/local/lib/libgobject-2.0.so.0...done.
Loaded symbols for /usr/local/lib/libgobject-2.0.so.0
Reading symbols from
/usr/local/lib/libgmodule-2.0.so.0...done.
Loaded symbols for /usr/local/lib/libgmodule-2.0.so.0
Reading symbols from
/usr/local/lib/libglib-2.0.so.0...done.
Loaded symbols for /usr/local/lib/libglib-2.0.so.0
Reading symbols from /usr/local/lib/libintl.so.6...done.
Loaded symbols for /usr/local/lib/libintl.so.6
Reading symbols from /usr/local/lib/libiconv.so.3...done.
Loaded symbols for /usr/local/lib/libiconv.so.3
Reading symbols from /lib/libreadline.so.6...done.
Loaded symbols for /lib/libreadline.so.6
Reading symbols from /lib/libm.so.4...done.
Loaded symbols for /lib/libm.so.4
Reading symbols from /usr/lib/libpthread.so.2...done.
Loaded symbols for /usr/lib/libpthread.so.2
Reading symbols from /lib/libc.so.6...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/libncurses.so.6...done.
Loaded symbols for /lib/libncurses.so.6
Reading symbols from
/usr/X11R6/lib/X11/locale/lib/common/xlcDef.so.2...done.
Loaded symbols for
/usr/X11R6/lib/X11/locale/lib/common/xlcDef.so.2
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 0x2825b269 in quit_gui () at gui_main.cc:387
387
gdk_window_get_root_origin(dispatcher_window->window,&x,&y);
[New LWP 100318]
(gdb) p dispatcher_window
$1 = (GtkWidget *) 0x0

[Roy Rankin]

not reproduced in svn 2038