3.2.6. Using GDB watchpoints to stop execution on data access and changes

Procedure

• To place a watchpoint for data change (write):

  (gdb) watch expression

  Replace expression with an expression that describes what you want to watch. For variables, expression is equal to the name of the variable.

• To place a watchpoint for data access (read):

  (gdb) rwatch expression

• To place a watchpoint for any data access (both read and write):

  (gdb) awatch expression

• To inspect the status of all watchpoints and breakpoints:

  (gdb) info br

• To remove a watchpoint:

  (gdb) delete num

  Replace the num option with the number reported by the info br command.