GNU gdb (GDB) 7.9
Copyright (C) 2015 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-unknown-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/gnome-shell...(no debugging symbols found)...done.
[New LWP 13092]
[New LWP 13101]

warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/bin/gnome-shell'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x00007f6fb80f5ac0 in g_logv () from /usr/lib/libglib-2.0.so.0
(gdb) bt
#0  0x00007f6fb80f5ac0 in g_logv () from /usr/lib/libglib-2.0.so.0
#1  0x00007f6fb80f5cff in g_log () from /usr/lib/libglib-2.0.so.0
#2  0x00007f6fb9a1d6ce in meta_clutter_init () from /usr/lib/libmutter.so.0
#3  0x00007f6fb9a4df12 in meta_init () from /usr/lib/libmutter.so.0
#4  0x0000000000401ddb in main ()