在vc6使用::std::map时debug的warning问题

我的头文件代码如下

#include <map>
typedef map<int, int> IntMap;

IntMap intmap1;

编译时产生warning如下：
warning C4786: 'std::_Tree<int,std::pair<int const ,int>,std::map<int,int,std::less<int>,std::allocator<int> >::_Kfn,std::less<int>,std::allocator<int> >::~_Tree<int,std::pair<int co
nst ,int>,std::map<int,int,std::less<int>,std::allocator<int> >::_Kfn,std::less<int>,std::allocator<int> >' : identifier was truncated to '255' characters in the debug information

查msdn说是The debugger cannot debug code with symbols longer than 255 characters.

应该怎么处理？