The value pointed to by 'variable' is assigned only once, mark it as a pointer to const (con.4).

Pointers to variables whose values remain unchanged should be marked as const.

Code analysis name: USE_CONST_POINTER_FOR_VARIABLE

void useVal(int val);

void function1(int* ptr)
{
    int* p = ptr; // C26462, the value pointed to by p is unmodified
    ptr = nullptr;

    useVal(*p);
}

C++ Core Guidelines con.4.