Google Code-in

Print the values of variables used in a C++ program ‘tcp-bulk-send.cc’ using gdb (GNU Debugger). The program tcp-bulk-send.cc can be found in examples/tcp. Copy this program in scratch folder and follow the steps given below to start debugging a program using gdb in ns-3:

1. Copy tcp-bulk-send.cc from examples/tcp to scratch
2. Configure and build ns-3.
3. Execute command: ./waf shell
4. Execute command: gdb build/scratch/tcp-bulk-send
5. Print the values of variables: tracing
6. Set the value of variable tracing as true and print it again.
7. Print the value of variable maxbytes using gdb

Provide the snapshots at each step for evaluation of the completed task.

You can refer to the video for introduction to gdb

Reference to gdb commands