$ gdb ./ristretto 
GNU gdb (GDB) 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-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/hashimo/git/xfce.d/apps/ristretto/src/ristretto...done.
(gdb) run
Starting program: /home/hashimo/git/xfce.d/apps/ristretto/src/ristretto 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
[New Thread 0x7fffebff3700 (LWP 13495)]
[New Thread 0x7fffeb7f2700 (LWP 13496)]
[New Thread 0x7fffeaff1700 (LWP 13497)]
[Thread 0x7fffeaff1700 (LWP 13497) exited]
[Thread 0x7fffebff3700 (LWP 13495) exited]

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff61bcc88 in g_utf8_validate () from /usr/lib/libglib-2.0.so.0
(gdb) quit
A debugging session is active.

	Inferior 1 [process 13488] will be killed.

Quit anyway? (y or n) y