mcs/errors/cs0626.cs

   1 // CS0626: `ExternClass.ExternMethod()' is marked as an external but has no DllImport attribute. Consider adding a DllImport attribute to specify the external implementation
   2 // Line: 6
   3 // Compiler options: -warnaserror -warn:1
   4
   5 class ExternClass {
   6         public static extern void ExternMethod();
   7 }