CODEWITHSUNDEEP
c++listiterator
José Del Valle
José Del Valle

Reputation: 691

List Iterator not dereferencable

I have been looking for the same problem I have with iterators; and I found a lot of topics with almost the same title, and similar problems, but mine is a little bit different.

I'm trying to get the *iterator at a specific position, but I get the error: "list iterator not deferencable" at run time, here is my code:

 CompetidorFormula2000* retornarCompetidorF2000(int pos){
        list<Competidor*>::iterator itr=miLista.begin();
        CompetidorFormula2000* f1=new CompetidorFormula2000(); 

        if(pos>0 && pos<=miLista.size()){
            advance(itr,pos);

        }
        f1=(CompetidorFormula2000*) (*itr);
        return f1;
        delete f1;
    }

Upvotes: 0

Views: 6047

Answers (1)

K-ballo
K-ballo

Reputation: 81349

If pos equals miLista.size() then you will get an iterator to the end of the list, the same iterator you get when you call miLista.end(). An iterator to the end of the list is not dereferenceable.

Upvotes: 3

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