H. Using the GNU C++ Debugger

Objectives

In this appendix you'll learn:

  • To use the run command to run a program in the debugger.

  • To use the break command to set a breakpoint.

  • To use the continue command to continue execution.

  • To use the print command to evaluate expressions.

  • To use the set command to change variable values during program execution.

  • To use the step, finish and next commands to control execution.

  • To use the watch command to see how a data member is modified during program execution.

  • To use the delete command to remove a breakpoint or a watchpoint.

And so shall I catch the fly.

William Shakespeare

We are built to make mistakes, coded for error.

Lewis Thomas

What we anticipate seldom occurs; what we least expect generally happens.

Benjamin Disraeli

He can run but he can't hide.

Joe Louis

It is one thing to show a man that he is in error, and another to put him in possession of truth.

John Locke

Outline

H.1 Introduction
H.2 Breakpoints and the run, stop, continue and print Commands
H.3 print and set Commands
H.4 Controlling Execution Using the step, finish and next Commands
H.5 watch Command
H.6 Wrap-Up