=> 0x7f16778a7f39:	Cannot access memory at address 0x7f16778a7f39
$7 = -99Python Exception <class 'gdb.MemoryError'> Cannot access memory at address 0x7f16780403c8: 
.
#0  0x00007f16778a7f39 in ?? ()
No symbol table info available.
Cannot access memory at address 0x7f16780403c8