5.4 Stepping through the program
To move forward and execute the line displayed above, use the command
step:
(gdb) step
7 return foo (p);
After executing line 6, the debugger displays the next line to be
executed. The pointer p will now have been set to zero (null):
(gdb) print p
$1 = (int *) 0x0
The command step will follow the execution of the program
interactively through any functions that are called in the current
line. If you want to move forward without tracing these calls,
use the command next instead.
