~/core> gdb pcmanfm core.pcmanfm
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Reading symbols from pcmanfm...(no debugging symbols found)...done.
[New LWP 4399]
[New LWP 4402]
[New LWP 4401]

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 `pcmanfm --desktop --profile LXDE'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f702670f353 in fm_mime_type_ref () from /usr/lib/libfm.so.4
(gdb) backtrace
#0  0x00007f702670f353 in fm_mime_type_ref () from /usr/lib/libfm.so.4
#1  0x00007f70267130c4 in ?? () from /usr/lib/libfm.so.4
#2  0x00007f70267136e0 in ?? () from /usr/lib/libfm.so.4
#3  0x00007f7026713cff in ?? () from /usr/lib/libfm.so.4
#4  0x00007f702135fdf0 in ffi_call_unix64 () from /usr/lib/libffi.so.6
#5  0x00007f702135f861 in ffi_call () from /usr/lib/libffi.so.6
#6  0x00007f702613aecc in g_cclosure_marshal_generic_va () from /usr/lib/libgobject-2.0.so.0
#7  0x00007f702613a484 in ?? () from /usr/lib/libgobject-2.0.so.0
#8  0x00007f7026154077 in g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
#9  0x00007f70261549cf in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#10 0x00007f70263d0191 in ?? () from /usr/lib/libgio-2.0.so.0
#11 0x00007f7025e6592d in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#12 0x00007f7025e65d08 in ?? () from /usr/lib/libglib-2.0.so.0
#13 0x00007f7025e66032 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#14 0x00007f70278ef3f7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#15 0x000000000041205d in ?? ()
#16 0x00007f7025578040 in __libc_start_main () from /usr/lib/libc.so.6
#17 0x00000000004120ca in ?? ()
(gdb)