#0 0x00007f2059821049 in ?? () No symbol table info available. #1 0x00007f205771fed0 in ?? () No symbol table info available. #2 0x0000000001c6d790 in ?? () No symbol table info available. #3 0x00007f205771ff10 in ?? () No symbol table info available. #4 0x0000000001c6daf0 in ?? () No symbol table info available. #5 0x0000000000000000 in ?? () No symbol table info available.