seek bug in stringstream?

[Lars Gullik Bjønnes]

This program:

#include <iostream>
#include <sstream>
#include <strstream>

int main()
{
        using namespace std;

        ostringstream ost;
        cout << ost.tellp() << endl;
        ost << "Hello";
        cout << ost.tellp() << endl;
        ost << " World!";
        cout << ost.tellp() << endl;

        ostrstream ost2;
        cout << ost2.tellp() << endl;
        ost2 << "Hello";
        cout << ost2.tellp() << endl;
        ost2 << " World";
        cout << ost2.tellp() << endl;
}                                    

Gives this result:

134538556
134558617
134558624
0
5
11

Is this correct behaviour?

	Lgb