How do I set persistent and conditional watchpoints on locally scoped variables?

Question

1. If I set a watchpoint for a variable local to the current scope, it will be auto deleted when going out of the scope. Is there any way to set it once and keep it au

Answer 1

You can set a watchpoint that does not go out of scope by setting it to the memory address.

(gdb) p &var1
$1 = (int *) 0x41523c0
(gdb) watch *(int *)0x41523c0
Hardware watchpoint 1: *(int *)0x41523c0

This also works for other data types and pointers.