Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-iter-02.cs

@@ -0,0 +1,35 @@
+// Compiler options: -langversion:default
+
+using System;
+using System.Collections;
+
+class X {
+	static int start, end;
+	static int i;
+
+	static IEnumerator GetRange ()
+	{
+		yield return 1;
+		for (i = start; i < end; i++)
+			yield return i;
+		yield return 100;
+	}
+
+	public static int Main ()
+	{
+		start = 10;
+		end = 30;
+
+		int total = 0;
+		
+		IEnumerator e = GetRange ();
+		while (e.MoveNext ()){
+			Console.WriteLine ("Value=" + e.Current);
+			total += (int) e.Current;
+		}
+
+		if (total != 491)
+			return 1;
+		return 0;
+	}
+}