(gdb) run
Starting program: /home/wonder/gnome-session-2.91.91.1/tools/gnome-session-check-accelerated
[Thread debugging using libthread_db enabled]

Breakpoint 2, main (argc=1, argv=0xbffff824) at gnome-session-check-accelerated.c:83
83	        if (!g_spawn_sync (NULL, (char**)child_argv, NULL, 0,
(gdb) s
85	                is_accelerated = FALSE;
(gdb) s
86	                g_printerr ("gnome-session-check-accelerated: Failed to run helper: %s\n", error->message);
(gdb) n
gnome-session-check-accelerated: Failed to run helper: Failed to execute child process "/usr/lib/gnome-session/gnome-session-check-accelerated-helper" (Bad address)
87	                g_clear_error (&error);