Bug#607557: backtrace with gnome-panel debug symbols

[Julien Cristau]

On Mon, Dec 20, 2010 at 13:50:17 +0100, Bastien wrote:

> Sure. I also compiled the library without the -O flag, so I can look
> at the value of any variable.
> 
> I get this running the "simple" example.
> 
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x00007ffff5f19163 in panel_applet_factory_main_closure
> (iid=0x665d38 "OAFIID:SimplePA_Factory", applet_type=6682016,
>     closure=0x610170) at panel-applet.c:1773
> 1773            iid, DisplayString (gdk_display));
> 
> (gdb) bt
> #0  0x00007ffff5f19163 in panel_applet_factory_main_closure
> (iid=0x665d38 "OAFIID:SimplePA_Factory", applet_type=6682016,
>     closure=0x610170) at panel-applet.c:1773
> #1  0x00007ffff5f1924e in panel_applet_factory_main (iid=0x665d38
> "OAFIID:SimplePA_Factory", applet_type=6682016, callback=
>     0x406c64 <Gnome::Panel::(anonymous
> namespace)::SignalProxy_Factory::c_callback(PanelApplet*, gchar
> const*, void*)>,
>     data=0x7fffffffded0) at panel-applet.c:1798
> #2  0x0000000000408942 in Gnome::Panel::factory_main<MyApplet> (iid=...)
>     at ../../libpanelapplet/libpanelappletmm/factory.h:99
> #3  0x0000000000408077 in main (argc=1, argv=0x7fffffffe078) at main.cc:138
> 
> (gdb) list
> 1768        closure = bonobo_closure_store (closure,
> panel_applet_marshal_BOOLEAN__STRING);
> 1769
> 1770        data = panel_applet_callback_data_new (applet_type, closure);
> 1771
> 1772        display_iid = bonobo_activation_make_registration_id (
> 1773            iid, DisplayString (gdk_display));
> 1774        retval = bonobo_generic_factory_main (
> 1775            display_iid,
> 1776            (BonoboFactoryCallback) panel_applet_factory_callback,
> 1777            data);
> 
> (gdb) print gdk_display
> $3 = (Display *) 0x0
> 
So the display doesn't ever get opened?  Is that actually a bug in the
library, or in the example program?

Cheers,
Julien
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