Testing fold expressions

src/wesnoth.cpp

@@ -701,6 +701,14 @@ static void check_fpu()
 }
 #endif
 
+namespace
+{
+template<typename... T>
+void fold_test(std::ostream& os, T... values)
+{
+	(os << ... << values);
+}
+} // namespace
 /**
  * Setups the game environment and enters
  * the titlescreen or game loops.
@@ -878,6 +886,9 @@ static int do_gameloop(const std::vector<std::string>& args)
 
 		cursor::set(cursor::NORMAL);
 
+		std::ostringstream test;
+		fold_test(test, 1, 2, 3, 4, 5);
+
 		// If loading a game, skip the titlescreen entirely
 		if(game->has_load_data() && game->load_game()) {
 			game->launch_game(game_launcher::reload_mode::RELOAD_DATA);