-// cs0114.cs: Y.XX hides inherited member X.XX. Must use `override' or `new' keyword
+// cs0114.cs: `Y.XX()' hides inherited member `X.XX()'. To make the current member override that implementation, add the override keyword. Otherwise add the new keyword
// Line: 8
+// Compiler options: -warnaserror -warn:2
+
public abstract class X {
public abstract void XX ();
}