#0  0x00007f21e8214f40 in g_type_check_instance_is_a () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#1  0x0000000000438dfe in ?? ()
No symbol table info available.
#2  0x00007f21e3884a14 in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
No symbol table info available.
#3  0x00007f21e3884435 in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
No symbol table info available.
#4  0x00007f21e81f1567 in g_cclosure_marshal_generic () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#5  0x00007f21e81f10a4 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#6  0x00007f21e820302a in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#7  0x00007f21e820c6b1 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#8  0x00007f21e820c852 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#9  0x00000000004bfda3 in ?? ()
No symbol table info available.
#10 0x00000000004c9673 in ?? ()
No symbol table info available.
#11 0x00000000004c97d0 in ?? ()
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#12 0x00000000004c999b in ?? ()
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#13 0x00000000004c9eca in ?? ()
No symbol table info available.
#14 0x00007f21ea44fe58 in ?? () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#15 0x00007f21e81f10a4 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#16 0x00007f21e8202e5f in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#17 0x00007f21e820c483 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#18 0x00007f21e820c852 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
No symbol table info available.
#19 0x00007f21ea57de39 in ?? () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#20 0x00007f21ea44f63a in gtk_propagate_event () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#21 0x00007f21ea44fa3b in gtk_main_do_event () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#22 0x00007f21ea0c8102 in ?? () from /usr/lib/libgdk-3.so.0
No symbol table info available.
#23 0x00007f21e7d2ba5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#24 0x00007f21e7d2c258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#25 0x00007f21e7d2c792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#26 0x00007f21ea44ee1d in gtk_main () from /usr/lib/libgtk-3.so.0
No symbol table info available.
#27 0x00007f21e88e9a4e in g_application_run () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#28 0x000000000042af90 in ?? ()
No symbol table info available.
#29 0x00007f21e72ae30d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#30 0x000000000042afd1 in ?? ()
No symbol table info available.
#31 0x00007fff8952b2d8 in ?? ()
No symbol table info available.
#32 0x000000000000001c in ?? ()
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#33 0x0000000000000002 in ?? ()
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#34 0x00007fff8952ca83 in ?? ()
No symbol table info available.
#35 0x00007fff8952ca8c in ?? ()
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#36 0x0000000000000000 in ?? ()
No symbol table info available.