Example of the On Access Breakpoint

To set an On Access breakpoint to stop whenever the address that contains y is modified, you would set the following in the Details pane:

• Event On Access wa &y
• Action Stop
• Option ‰ NONE

You can set an On Access breakpoint to stop whenever the contents of a string change. For example, your program has a variable defined as:

char * sp = "hello world\n"

To find where a change occurs in the value of sp, set the following in the Details pane:

• Event On Access wa sp, 12
• Action Stop
• Option NONE

The sp does not require an ampersand (&) because you want to watch the string.

To set an On Access breakpoint to stop whenever any portion of the string is used (read), set the following:

• Event On Access rb sp, 12
• Action Stop
• Option NONE

You can just type a variable name if the variable contains the address of another variable you want to watch.