Bug 425005

Description Andreas Sewe 2014-01-07 07:29:12 EST

The following stack trace shows up in the Error Log when completing on "sysout". Debugging the currently running Eclipse instance showed that the AbstractJavaCompletionProposal in question was the EmptyCompletionProposal:

Caused by: java.lang.NullPointerException
at org.eclipse.jdt.internal.ui.text.java.AbstractJavaCompletionProposal.getCamelCaseCompound(AbstractJavaCompletionProposal.java:876)
at org.eclipse.jdt.internal.ui.text.java.AbstractJavaCompletionProposal.getPrefixCompletionText(AbstractJavaCompletionProposal.java:723)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.completeCommonPrefix(CompletionProposalPopup.java:1643)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$35(CompletionProposalPopup.java:1607)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup$14.run(CompletionProposalPopup.java:1582)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.incrementalComplete(CompletionProposalPopup.java:1565)
at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1686)
at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor$AdaptedSourceViewer.doOperation(CompilationUnitEditor.java:183)
at org.eclipse.ui.texteditor.ContentAssistAction$1.run(ContentAssistAction.java:82)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.texteditor.ContentAssistAction.run(ContentAssistAction.java:80)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:499)
at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:120)
... 65 more

I am not entirely sure what the root cause of this problem is (Johannes hasn't been able to reproduce this in his install).

Also, DiscoverCompletionProposal may suffer from the same problem. Will investigate further.