Whole document tree

11. Altering Execution

Once you think you have found an error in your program, you might want to find out for certain whether correcting the apparent error would lead to correct results in the rest of the run. You can find the answer by experiment, using the GDB features for altering execution of the program.

For example, you can store new values into variables or memory locations, give your program a signal, restart it at a different address, or even return prematurely from a function.

11.1 Assignment to variables
11.2 Continuing at a different address
11.3 Giving your program a signal
11.4 Returning from a function
11.5 Calling program functions		Calling your program's functions
11.6 Patching programs		Patching your program