1. Set Windows' display language to German.
2. Try to compile this code from Creator using MSVC 2013:

   int main(int argc, char *argv[])
   {
       for (int i : whatever()) {
       }
       return 0;
   }
   

3. See the Issues view.
   Creator displays the German umlaut "ü" strangely:
   

Umlauts should be correctly displayed like any other characters.