#0  0x0000000000000000 in ?? ()
No symbol table info available.
#1  0x00007f92becaeaaf in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
No symbol table info available.
#2  0x00007f92becaf249 in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
No symbol table info available.
#3  0x00000000004040e6 in _start ()
No symbol table info available.