Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs1648-3.cs

@@ -0,0 +1,26 @@
+// CS1648: Members of readonly field `Test.p' cannot be modified (except in a constructor or a variable initializer)
+// Line: 17
+
+using System;
+
+public class Test
+{
+	struct Container
+	{
+		public int this[int arg] {
+			set {
+			}
+		}
+	}
+	
+	readonly Container p;
+	
+	void Foo ()
+	{
+		p[0] = 0;
+	}
+
+	public static void Main ()
+	{
+	}
+}