c - 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 func2, a pointer to local variable is passed to func2 -- the pointer is pointed to the stack. Is this safe for the rules of C?

Thanks.

Answer 1

The scope of i is func1 and it outlives the call to func2. So it is perfectly safe.