Imported Upstream version 5.10.0.47

Former-commit-id: d0813289fa2d35e1f8ed77530acb4fb1df441bc0

mcs/tests/test-ref-04.cs

@@ -0,0 +1,45 @@
+class X
+{
+	int field;
+
+	public static int Main ()
+	{
+		var x = new X ();
+
+		x.field = 5;
+		if (!x.Test1 ())
+			return 1;
+
+		x.Test2 ();
+
+		if (x.Test3 ()++ != 6)
+			return 2;
+
+		if (x.field != 7)
+			return 3;
+
+		return 0;
+	}
+
+	bool Test1 ()
+	{
+		ref var x = ref field;
+		int v = x;
+		++x;
+
+		return x == 6;
+	}
+
+	void Test2 ()
+	{
+		ref int x = ref field;
+		x.ToString ();
+	}
+
+	ref int Test3 ()
+	{
+		ref int l = ref field;
+		ref int v = ref l;
+		return ref l;
+	}
+}