Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-620.cs

@@ -0,0 +1,29 @@
+//
+// fixed
+//
+class X {
+
+	static void A (ref int a)
+	{
+		a++;
+	}
+
+	// Int32&
+	static void B (ref int a)
+	{
+		// Int32&&
+		A (ref a);
+	}
+
+	public static int Main ()
+	{
+		int a = 10;
+
+		B (ref a);
+
+		if (a == 11)
+			return 0;
+		else
+			return 1;
+	}
+}