How can I use GDB scripting for advanced debugging?

How can I use GDB scripting for advanced debugging?

GDB scripting allows you to automate debugging tasks. You can write scripts in Python or use GDB's built-in command language.

What are some common use cases for GDB scripting?

Common use cases include automating repetitive tasks, setting breakpoints conditionally, and logging variable states during execution.

Can you show me a simple example of a GDB script?

Sure! Here's a simple script that sets a breakpoint and prints a variable's value:

import gdb

def print_var():
    print(gdb.parse_and_eval('my_variable'))

gdb.Breakpoint('main', internal=True)
gdb.events.stop.connect(print_var)

How do I run a GDB script from the command line?

You can run a GDB script by using the -x option followed by the script filename: gdb -x myscript.gdb ./myprogram.