Passing pointer to local variable to function: is it safe?

Question

For example:

void func1(){
    int i = 123;
    func2(&i);
}
void func2(int *a){
    *a = 456;
}

When func1 calling

Answer 1

Yes, your code is safe.

As long as the object's lifetime is not over, it's safe to pass local variables like you do.