STLport

#define _STLP_DONT_REDEFINE_STD
#define _STLP_WHOLE_NATIVE_STD
#include <string>
void foo()
{
   std::string std_str("std");
   stlport::string stlport_str("stlport");
   stlport_str.append(std_str.begin(), std_str.end());
   // Following is wrong because there is no assignment
   // operator for stlport::string on std::string.
   //std_str = stlport_str;
}