Imported Upstream version 3.12.0

Former-commit-id: cf92446697332992ec36726e78eb8703e1f259d7

mcs/errors/cs1736-2.cs

@@ -0,0 +1,16 @@
+// CS1736: The expression being assigned to optional parameter `s' must be a constant or default value
+// Line: 11
+
+struct S
+{
+	public S ()
+	{		
+	}
+}
+
+class X
+{
+	public void Foo (S s = new S ())
+	{
+	}
+}