std::string
get_str() {
  return "hello string";
}
// This is an example of an exported function.
__declspec(dllexport) BOOL _stdcall demoFunction(unsigned char *buffer, unsigned int size) {
  OutputDebugStringA("demoFunction1 in\n");
  printf("demoFunction1 in\n");
  static std::string the_string = get_str(); // crash on windows xp
  if (!the_string.empty()) {
    printf(the_string.c_str());
    OutputDebugStringA(the_string.c_str());
  } else {
	  // bad behavior on windows 7 and later.  string is always  emtpy
    OutputDebugStringA("the the_string is empty().\n");
    printf("the the_string is empty().\n");
  }
  OutputDebugStringA("demoFunction2 after static std::string\n");
  printf("demoFunction2 after static std::string\n");

  if (!buffer)
    return FALSE;

  char *p = "{f56fee02-16d1-44a3-b191-4d7535f92ca5}";
  memcpy_s(buffer, size, p, strlen(p));
  return TRUE;
}