kripton@miramis ~ $ firefox
Segmentation fault
kripton@miramis ~ $ dmesg | tail -n1
[49627.940706] firefox[23667]: segfault at 0 ip 00007f6d29097600 sp 00007fff26b4f978 error 4 in libglib-2.0.so.0.3000.3[7f6d2901f000+122000]
kripton@miramis ~ $ gdb firefox
GNU gdb (Gentoo 7.4 p1) 7.4
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/firefox...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/firefox
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffe34ce700 (LWP 26513)]
 
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff0897600 in g_utf8_validate () from /usr/lib64/libglib-2.0.so.0
(gdb) bt
#0  0x00007ffff0897600 in g_utf8_validate () from /usr/lib64/libglib-2.0.so.0
#1  0x00007fffe6c07162 in gconf_value_from_corba_value () from /usr/lib64/libgconf-2.so.4
#2  0x00007fffe6c1468e in gconf_engine_all_entries () from /usr/lib64/libgconf-2.so.4
#3  0x00007fffe6c17de4 in ?? () from /usr/lib64/libgconf-2.so.4
#4  0x00007fffe6c1aebb in gconf_client_add_dir () from /usr/lib64/libgconf-2.so.4
#5  0x00007fffe79d66fc in ?? () from /usr/lib64/libgnomeui-2.so.0
#6  0x00007fffe72c74ce in gnome_program_postinit () from /usr/lib64/libgnome-2.so.0
#7  0x00007fffe72c78f9 in ?? () from /usr/lib64/libgnome-2.so.0
#8  0x00007fffe72c7b6d in gnome_program_initv () from /usr/lib64/libgnome-2.so.0
#9  0x00007fffe72c7c6a in gnome_program_init () from /usr/lib64/libgnome-2.so.0
#10 0x00007ffff51cbccb in ?? () from /usr/lib64/firefox/libxul.so
#11 0x00007ffff51c4f98 in XRE_main () from /usr/lib64/firefox/libxul.so
#12 0x00000000004024c4 in _start ()
(gdb) q
A debugging session is active.
 
        Inferior 1 [process 26443] will be killed.
 
Quit anyway? (y or n) y