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Bug 338949

Summary:	NPE when opening CDT Content Assist
Product:	[Tools] CDT	Reporter:	Micha Riser <eclipse>
Component:	cdt-parser	Assignee:	Markus Schorn <mschorn.eclipse>
Status:	RESOLVED FIXED	QA Contact:	Markus Schorn <mschorn.eclipse>
Severity:	normal
Priority:	P3	CC:	cdtdoug, jens.elmenthaler, kentarou
Version:	8.0
Target Milestone:	8.0
Hardware:	PC
OS:	Linux
Whiteboard:

Description Micha Riser

2011-03-04 10:49:36 EST

What steps will reproduce the problem?
1. Open Content Assist in CDT Editor 
2. Error happens somtimes

-- Error Details --
Date: Fri Mar 04 16:47:28 CET 2011
Message: Error
Severity: Error
Product: Eclipse 1.3.1.20100913-1228 (org.eclipse.epp.package.rcp.product)
Plugin: org.eclipse.cdt.ui
Session Data:
eclipse.buildId=M20100909-0800
java.version=1.6.0_21
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.rcp.product --launcher.XXMaxPermSize 256m
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.rcp.product --launcher.XXMaxPermSize 256m


Exception Stack Trace:
java.lang.NullPointerException
	at org.eclipse.cdt.internal.core.dom.parser.ASTQueries.findTypeRelevantDeclarator(ASTQueries.java:107)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.ImplicitsAnalysis.paramHasTypeReferenceToTheAssociatedClassType(CPPClassScope.java:520)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.ImplicitsAnalysis.<init>(CPPClassScope.java:418)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.CPPClassScope.createImplicitMembers(CPPClassScope.java:107)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.CPPClassScope.<init>(CPPClassScope.java:73)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTCompositeTypeSpecifier.getScope(CPPASTCompositeTypeSpecifier.java:135)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTCompositeTypeSpecifier.getScope(CPPASTCompositeTypeSpecifier.java:1)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.getContainingScope(CPPVisitor.java:864)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.getContainingScopeOrNull(CPPVisitor.java:1122)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.getContainingScope(CPPVisitor.java:1020)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.getContainingScope(CPPVisitor.java:1016)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.getContainingScope(CPPVisitor.java:853)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor.getContainingNonTemplateScope(CPPVisitor.java:840)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.CPPFunctionScope.getParent(CPPFunctionScope.java:105)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics.getParentScope(CPPSemantics.java:1106)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics.lookup(CPPSemantics.java:930)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics.contentAssistLookup(CPPSemantics.java:3185)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics.findBindingsForContentAssist(CPPSemantics.java:3180)
	at org.eclipse.cdt.internal.core.dom.parser.cpp.CPPASTNamedTypeSpecifier.findBindings(CPPASTNamedTypeSpecifier.java:111)
	at org.eclipse.cdt.internal.ui.text.contentassist.DOMCompletionProposalComputer.computeCompletionProposals(DOMCompletionProposalComputer.java:133)
	at org.eclipse.cdt.internal.ui.text.contentassist.ParsingBasedProposalComputer.computeCompletionProposals(ParsingBasedProposalComputer.java:55)
	at org.eclipse.cdt.internal.ui.text.contentassist.CompletionProposalComputerDescriptor.computeCompletionProposals(CompletionProposalComputerDescriptor.java:300)
	at org.eclipse.cdt.internal.ui.text.contentassist.CompletionProposalCategory.computeCompletionProposals(CompletionProposalCategory.java:261)
	at org.eclipse.cdt.internal.ui.text.contentassist.ContentAssistProcessor.collectProposals(ContentAssistProcessor.java:270)
	at org.eclipse.cdt.internal.ui.text.contentassist.ContentAssistProcessor.computeCompletionProposals(ContentAssistProcessor.java:223)
	at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1834)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:556)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:553)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup$14.run(CompletionProposalPopup.java:1542)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.incrementalComplete(CompletionProposalPopup.java:1536)
	at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1659)
	at org.eclipse.cdt.internal.ui.editor.CEditor$AdaptedSourceViewer.doOperation(CEditor.java:328)
	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:498)
	at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185)
	at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:468)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:786)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:885)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:567)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:508)
	at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:123)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1524)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1257)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1294)
	at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:730)
	at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2841)
	at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:734)
	at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1743)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4796)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:4360)
	at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
	at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8168)
	at org.eclipse.swt.widgets.Display.eventProc(Display.java:1238)
	at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
	at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2229)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3159)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1383)

Comment 1 Kentarou Fukuda

2011-03-15 14:39:50 EDT

It seems to be for CDT.

Comment 2 Markus Schorn

2011-03-16 04:01:49 EDT

Can you provide the piece of code for which content assist failed?

Comment 3 Markus Schorn

2011-03-28 09:46:25 EDT

Fixed together with bug 340664.