-// cs0626-3.cs: Method, operator, or accessor `ExternClass.implicit operator ExternClass(byte)' is marked external and has no attributes on it. Consider adding a DllImport attribute to specify the external implementation
+// CS0626: `ExternClass.implicit operator ExternClass(byte)' is marked as an external but has no DllImport attribute. Consider adding a DllImport attribute to specify the external implementation
// Line: 6
// Compiler options: -warnaserror -warn:1