Description Arthur Daussy 2020-05-05 04:31:09 EDT

Hello,

In some case I get the two following NPEs when editing java files. When I reach a particular state, it prevents me from saving the file and each time I try to save it 2 NPEs are thrown. This state can't be reproduced easily (at least I have not succeeded yet to give you more information). Last time I have encountered it, I was editing the file in "Horizontal Split" mode. I don't know if it is linked because I think I already encountered this state without it.

I'm sorry I can't give more information. I have created this bug so those NPE are traced and maybe someone will recognize them and provide a nice, "step to reproduce".

----
java.lang.NullPointerException
	at org.eclipse.jdt.internal.ui.text.LineComparator.<init>(LineComparator.java:47)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility$2.getChangedLineRegions(EditorUtility.java:833)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility$2.run(EditorUtility.java:809)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.calculateChangedLineRegions(EditorUtility.java:782)
	at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider.commitWorkingCopy(CompilationUnitDocumentProvider.java:1413)
----

----
java.lang.NullPointerException
	at org.eclipse.ui.texteditor.SelectMarkerRulerAction.includesRulerLine(SelectMarkerRulerAction.java:293)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectAnnotationRulerAction.findJavaAnnotation(JavaSelectAnnotationRulerAction.java:160)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectAnnotationRulerAction.update(JavaSelectAnnotationRulerAction.java:111)
	at org.eclipse.ui.texteditor.AbstractRulerActionDelegate.update(AbstractRulerActionDelegate.java:130)
	at org.eclipse.ui.texteditor.AbstractRulerActionDelegate.setActiveEditor(AbstractRulerActionDelegate.java:90)
	at org.eclipse.ui.internal.EditorPluginAction.editorChanged(EditorPluginAction.java:69)
	at org.eclipse.ui.internal.EditorActionBuilder$EditorContribution.editorChanged(EditorActionBuilder.java:78)
----

Complete logs in attachment