Comment 10 for bug 777249

Yes, bug #778075 looks like a duplicate of this one. I often get the same crash (segfault at 318) when running Java applications. I got a stack trace from gdb that shows it crashing in g_closure_invoke ():

(gdb) run
Starting program: /usr/bin/unity-window-decorator
[Thread debugging using libthread_db enabled]
[New Thread 0x7fffedb8b700 (LWP 7766)]
[New Thread 0x7fffe367d700 (LWP 7767)]

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

(unity-window-decorator:7762): GLib-GObject-WARNING **: invalid unclassed pointer in cast to `GObject'

(unity-window-decorator:7762): GLib-GObject-CRITICAL **: g_object_get_data: assertion `G_IS_OBJECT (object)' failed

Program received signal SIGSEGV, Segmentation fault.
0x0000000000415d6f in ?? ()
(gdb) backtrace
#0 0x0000000000415d6f in ?? ()
#1 0x00007ffff4ed581c in g_closure_invoke ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#2 0x00007ffff4ee7019 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#3 0x00007ffff4ef0258 in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4 0x00007ffff4ef041f in g_signal_emit ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5 0x00007ffff7228d44 in ?? () from /usr/lib/libwnck-1.so.22
#6 0x00007ffff72293d4 in ?? () from /usr/lib/libwnck-1.so.22
#7 0x00007ffff4609bcd in g_main_context_dispatch ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x00007ffff460a3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9 0x00007ffff460a9f2 in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007ffff6d04af7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#11 0x0000000000409864 in main ()