std::List doesn't releases the memory ...

Hi,

I have compiled the following source code on SuSE linux with g++
compiler version 3.4.3.

#include <iostream>
#include <list>

void PopulateList(std::list<int> & li, int numitr)
{
         for(int i = 0; i < numitr; i++){
                 li.push_back(i);
         }

}

void testList()
{
         char ch;
         int numitr;

                 std::list<int> li;
                 std::cout << "Enter any charater to continue : Before
Populating std::list<int> : take memory reading: ";
                 std::cin >> ch;
                 std::cout << "How many iteration: ";
                 std::cin >> numitr;

                 PopulateList(li, numitr);

                 std::cout << "Press any charater to continue : After
Populating std::list<int> : take memory reading: ";
                 std::cin >> ch;

                 li.clear();

                 std::cout << "Press any character to continue : After
clearing std::list<int> : take memory reading: ";
                 std::cin >> ch;

}

int main()
{
         while(1) {
                 testList();
                 std::cout << "==>\n";
                 std::cout << "==> End of while\n";
                 std::cout << "==>\n";
         } // End of While

}

OBSERVATION:

The multiple iteration of while loop doesn't release the memory
occupied by the std::list

Is this a bug with std::List or incorrect usage of it?

The same behaviour is not observed with std::vector?

Does anyone knows the solution for this?

Thanks and With Warm Regards,

-RV
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