-// cs1690.cs: Cannot call methods, properties, or indexers on 'A.point' because it is a value type member of a marshal-by-reference class
-// Line: 21
+// CS1690: Cannot call methods, properties, or indexers on `A.point' because it is a value type member of a marshal-by-reference class
+// Line: 22
+// Compiler options: -warn:1 -warnaserror