STL Map : Uninitialized Memory Read

[humble_learner]

Hi,

This is regarding a problem encountered on executing code developed using VS2005 using C++ Standard Libraries.

I have a member in a class of type std::map. The class definition is indicated below (There are some other class members which I am not indicating here so as to not occupy space)

class DataHolder
{
private :
map<DWORD, MyClass *> m_MyMap;

public :
DataHolder()
{
   m_MyMap.clear();
}

void MyMethod()
{
        DWORD j = GetValue();
         map<DWORD,MyClass*>::iterator it = m_MyMap.begin();
         it = m_MyMap.find(j); //Rational Purifier indicated a problem in this line
         if (it == m_MyMap.end())
         {
               printf("Data has not been found in the map");
         }

}
.
.
.
.
.
.
}

When the above class is used in the execution of a program and the Rational Purifier tool is being used to analyze memory issues, the following error was indicated in the line marked above :

"Uninitialized Memory Read "

The next level of instructions displayed by the Rational Purifier editor shows the following

    std::_Tree<class std::_Tmap_traits<unsigned long,class MyClass *,struct std::less<unsigned long>,class std::allocator<struct std::pair<unsigned long const ,class MyClass *> >,0> >::_Lbound(unsigned long const &)const  [c:\program files\microsoft visual studio 8\vc\include\xtree.:1174]
                _Nodeptr _Wherenode = _Myhead;    // end() if search fails
        
                while (!_Isnil(_Pnode))
     =>             if (_DEBUG_LT_PRED(this->comp, _Key(_Pnode), _Keyval))
                        _Pnode = _Right(_Pnode);    // descend right subtree
                    else
                        {    // _Pnode not less than _Keyval, remember it

The problem is indicated in the line shown by "=> " in the snippet above.

Can someone please provide some clues on why this is being indicated and what would be the possible solution.