Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-iter-06.cs

@@ -0,0 +1,78 @@
+// Compiler options: -langversion:default
+
+using System;
+using System.Collections;
+
+struct S {
+	int j;
+	
+	public IEnumerable Get (int a)
+	{
+		Console.WriteLine ("Sending: " + a);
+		yield return a;
+		j = 10;
+		Console.WriteLine ("Sending: " + j);
+		yield return j;
+	}
+
+	public static IEnumerable GetS (int a)
+	{
+		yield return 100;
+		yield return a;
+		yield return 1000;
+	}
+}
+
+class X {
+	IEnumerable Get (int a)
+	{
+		yield return 1;
+		yield return 2;
+		yield return a;
+	}
+
+	static IEnumerable GetS (int a)
+	{
+		yield return a;
+		yield return a;
+		yield return 1;
+	}
+	
+	public static int Main ()
+	{
+		X y = new X ();
+
+		int total = 0;
+		foreach (int x in y.Get (5)){
+			total += x;
+		}
+		if (total != 8)
+			return 1;
+
+		total = 0;
+		foreach (int x in GetS (3)){
+			total += x;
+		}
+	        if (total != 7)
+			return 2;
+
+		S s = new S();
+		total = 0;
+		foreach (int x in s.Get (100)){
+			Console.WriteLine ("Got: " + x);
+			total += x;
+		}
+		if (total != 110)
+			return 3;
+
+		total = 0;
+		foreach (int x in S.GetS (1)){
+			total += x;
+		}
+		if (total != 1101)
+			return 4;
+		
+		Console.WriteLine ("OK");
+		return 0;
+	}
+}