Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs1649.cs

@@ -0,0 +1,26 @@
+// CS1649: Members of readonly field `B.a' cannot be passed ref or out (except in a constructor)
+// Line: 13
+
+class B
+{
+	public struct A
+	{
+	    public int val;
+	}
+
+	public readonly A a = new A ();
+}
+
+class C
+{
+    static void f (ref int i)
+    {
+	i = 44;
+    }
+
+    static void Main ()
+    {
+	B b = new B (); 
+	f (ref b.a.val);
+    }
+}