Set and remove breakpoints

An unconditional breakpoint stops the program object at a specific statement. A conditional breakpoint stops the program object when a specific condition at a specific statement is met.

When the program object stops, the Display Module Source display is shown. The appropriate module object is shown with the source positioned at the line where the breakpoint occurred. This line is highlighted. At this point, you can evaluate variables, set more breakpoints, and run any of the debug commands.

You should know the following characteristics about breakpoints before using them:

• When a breakpoint is bypassed, for example with the Goto (GOTO) statement, that breakpoint isn't processed.
• When a breakpoint is set on a statement, the breakpoint occurs before that statement is processed.
• When a statement with a conditional breakpoint is reached, the conditional expression associated with the breakpoint is evaluated before the statement is processed.
• Breakpoint functions are specified through debug commands.
  These functions include:

  • Adding breakpoints to program objects
  • Removing breakpoints from program objects
  • Displaying breakpoint information
  • Resuming the running of a program object after a breakpoint has been reached.