Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0553-2.cs

@@ -0,0 +1,15 @@
+// CS0553: User-defined conversion `plj.aClass.implicit operator plj.aClass(object)' cannot convert to or from a base class
+// Line: 10
+
+using System;
+
+namespace plj
+{
+	public abstract class aClass
+	{
+		public static implicit operator aClass(object o)
+		{ 
+			return null;
+		}
+	}
+}