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Bug 575791

Summary:	[model] NPE in HashtableOfObjectToInt.java:75
Product:	[Eclipse Project] JDT	Reporter:	Aurelien Pupier <apupier>
Component:	Core	Assignee:	Jörg Kubitz <jkubitz-eclipse>
Status:	CLOSED WONTFIX	QA Contact:	Jay Arthanareeswaran <jarthana>
Severity:	normal
Priority:	P3	CC:	jarthana, jkubitz-eclipse, manoj.palat
Version:	4.20
Target Milestone:	4.24 M1
Hardware:	PC
OS:	Linux
See Also:	https://git.eclipse.org/r/c/jdt/eclipse.jdt.core/+/185058
Whiteboard:

Description Aurelien Pupier

2021-09-02 20:00:59 EDT

java.lang.NullPointerException
 	at org.eclipse.jdt.internal.compiler.util.HashtableOfObjectToInt.get(HashtableOfObjectToInt.java:75)
 	at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveNewId(JavaModelManager.java:4581)
 	at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveClasspathEntry(JavaModelManager.java:4535)
 	at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveClasspathEntries(JavaModelManager.java:4530)
 	at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveContainers(JavaModelManager.java:4572)
 	at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.saveProjects(JavaModelManager.java:4636)
 	at org.eclipse.jdt.internal.core.JavaModelManager$VariablesAndContainersSaveHelper.save(JavaModelManager.java:4477)
 	at org.eclipse.jdt.internal.core.JavaModelManager.saveVariablesAndContainers(JavaModelManager.java:4448)
 	at org.eclipse.jdt.internal.core.JavaModelManager.saving(JavaModelManager.java:4680)
 	at org.eclipse.core.internal.resources.SaveManager.executeLifecycle(SaveManager.java:387)
 	at org.eclipse.core.internal.resources.SaveManager$1.run(SaveManager.java:204)
 	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
 	at org.eclipse.core.internal.resources.SaveManager.broadcastLifecycle(SaveManager.java:207)
 	at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1164)
 	at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1143)
 	at org.eclipse.core.internal.resources.DelayedSnapshotJob.run(DelayedSnapshotJob.java:55)
 	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)


I do not know how to reproduce. it appears in log of my tests on this PR https://github.com/MoreUnit/MoreUnit-Eclipse/pull/109/checks?check_run_id=3501233002

Comment 1 Jörg Kubitz

2021-09-06 13:01:37 EDT

IClasspathEntry was null

as returned from IClasspathContainer.getClasspathEntries()

It is impossible to see which IClasspathContainer did that.

I see one possible null for IClasspathEntry in 
javadoc.JavaDocLocations.convertContainer().

We can fix that an fail earlier.

Comment 2 Eclipse Genie

2021-09-06 13:29:33 EDT

New Gerrit change created: https://git.eclipse.org/r/c/jdt/eclipse.jdt.core/+/185058

Comment 3 Jay Arthanareeswaran

2021-11-19 01:21:46 EST

Bulk move out of 4.22.

If this is going to make it to 4.22, feel free to set the target back.