Imported Upstream version 5.10.0.47

Former-commit-id: d0813289fa2d35e1f8ed77530acb4fb1df441bc0

mcs/tests/test-ref-07.cs

@@ -0,0 +1,30 @@
+// Compiler options: -langversion:latest
+
+public readonly partial ref struct Test
+{
+	public static void Main ()
+	{
+		var m = new Test ();
+		m.Method ();
+	}
+
+	Test Method ()
+	{
+		return new Test ();
+	}
+}
+
+ref struct Second
+{
+	Test field;
+}
+
+public abstract class P
+{
+	public abstract Test Span { get; }
+}
+
+public interface II
+{
+	Test Span { get; }
+}