#0  0x00007f65d71b4968 in JSC::JSCell::toPrimitive(JSC::ExecState*, JSC::PreferredPrimitiveType) const () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-3.0.so.0
No symbol table info available.
#1  0x00007f65d721a33b in JSC::JSValue::toStringSlowCase(JSC::ExecState*) const () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-3.0.so.0
No symbol table info available.
#2  0x00007f65d7085d65 in ?? () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-3.0.so.0
No symbol table info available.
#3  0x00007f65d7086242 in ?? () from /usr/lib/x86_64-linux-gnu/libjavascriptcoregtk-3.0.so.0
No symbol table info available.
#4  0x00007f656cd7ea5e in ?? ()
No symbol table info available.
#5  0x0000000000000000 in ?? ()
No symbol table info available.