Check iterator pointer in c++

Question

I want to know if the following check is necessary:

std::list<int> myList;
.....
for (std::list<int>::iterator itr = myList.begin(); itr != myList.end(); ++itr)
{
   if (itr != NULL) // Is This Check Necessary?
   {
      // DO SOMTHING.
   }    
}

I have seen this check in some places and I'm wondering if that is a necessary check. Maybe this check is necessary if the list is an input to a function?

Thanks, Ofer.

Answer 1

No, it is an unnecessary check. You might want to check *itr != nullptr, if the list held some kind of pointers.

Answer 2

No, it's not necessary. I am not sure it's even valid.