GDB: Assign breakpoint to change of symbol

Question

I'm debugging a C application that has a segmentation fault. I already identified the variable that causes the problem. However, I do not know yet, when the variable is assigned so that it causes the Segmentation Fault.

Is there a way to set a breakpoint in GDB if a new value is being assigned to an existing variable?

Answer 1

You need a watchpoint:

(gdb) watch my_var