```cs /// <summary> /// X. /// </summary> public class K { } ``` `SA1514: Element documentation header should be preceded by blank line` is reported on the first `///` in the file. Adding the new line resolves the diagnostic but instead raises `SA1517: Code should not contain blank lines at start of file`, leading to an infinite loop. Furthermore, the class has been intentionally declared in the global namespace, so there is no space for a namespace declaration