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This was originally classified as a Code Recommenders issue by the automated error reporting. As SubwordsSessionProcessor.initializeContext just calls into JDT land using CompilationUnit.codeComplete, I think this may actually hint at a bug in JDT. Unfortunately, the original error report has hidden the exception message, so I don't know which class (instead of the expected Statement) was seen. == The following incident was reported via the automated error reporting: code: 1 plugin: org.eclipse.recommenders.subwords.rcp_2.2.0.v20150609-1848 message: HIDDEN fingerprint: a6a283ea exception class: java.lang.ClassCastException exception message: HIDDEN number of children: 0 java.lang.ClassCastException: HIDDEN at org.eclipse.jdt.internal.codeassist.complete.CompletionParser.attachOrphanCompletionNode(CompletionParser.java:602) at org.eclipse.jdt.internal.codeassist.complete.CompletionParser.updateRecoveryState(CompletionParser.java:5213) at org.eclipse.jdt.internal.compiler.parser.Parser.resumeOnSyntaxError(Parser.java:12387) at org.eclipse.jdt.internal.codeassist.complete.CompletionParser.resumeOnSyntaxError(CompletionParser.java:5096) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:11018) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:11360) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:11317) at org.eclipse.jdt.internal.compiler.parser.Parser.dietParse(Parser.java:9732) at org.eclipse.jdt.internal.codeassist.complete.CompletionParser.dietParse(CompletionParser.java:4601) at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(CompletionEngine.java:1812) at org.eclipse.jdt.internal.core.Openable.codeComplete(Openable.java:131) at org.eclipse.jdt.internal.core.CompilationUnit.codeComplete(CompilationUnit.java:357) at org.eclipse.jdt.internal.core.CompilationUnit.codeComplete(CompilationUnit.java:345) at org.eclipse.recommenders.internal.subwords.rcp.SubwordsSessionProcessor.initializeContext(SubwordsSessionProcessor.java:116) at org.eclipse.recommenders.completion.rcp.processable.IntelligentCompletionProposalComputer.fireInitializeContext(IntelligentCompletionProposalComputer.java:243) at org.eclipse.recommenders.completion.rcp.processable.IntelligentCompletionProposalComputer.computeCompletionProposals(IntelligentCompletionProposalComputer.java:135) at org.eclipse.jdt.internal.ui.text.java.CompletionProposalComputerDescriptor.computeCompletionProposals(CompletionProposalComputerDescriptor.java:333) at org.eclipse.jdt.internal.ui.text.java.CompletionProposalCategory.computeCompletionProposals(CompletionProposalCategory.java:337) at org.eclipse.jdt.internal.ui.text.java.ContentAssistProcessor.collectProposals(ContentAssistProcessor.java:322) at org.eclipse.jdt.internal.ui.text.java.ContentAssistProcessor.computeCompletionProposals(ContentAssistProcessor.java:279) at org.eclipse.jface.text.contentassist.ContentAssistant$5.run(ContentAssistant.java:1904) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1902) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:573) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:570) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:505) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:499) at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1720) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor$AdaptedSourceViewer.doOperation(CompilationUnitEditor.java:180) 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:473) at org.eclipse.jface.commands.ActionHandler.execute(ActionHandler.java:122) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90) at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:252) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:234) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:493) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:486) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:286) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:507) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:558) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:378) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher.java:324) at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:86) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1105) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4225) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1491) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1514) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1499) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1528) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1524) at org.eclipse.swt.widgets.Canvas.sendKeyEvent(Canvas.java:496) at org.eclipse.swt.widgets.Control.doCommandBySelector(Control.java:1060) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5784) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(OS.java:-2) at org.eclipse.swt.internal.cocoa.NSResponder.interpretKeyEvents(NSResponder.java:68) at org.eclipse.swt.widgets.Composite.keyDown(Composite.java:594) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5694) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(OS.java:-2) at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:227) at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2130) at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2337) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5756) at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(OS.java:-2) at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5193) at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5342) at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(OS.java:-2) at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:128) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3695) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1127) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:654) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:598) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608) at org.eclipse.equinox.launcher.Main.run(Main.java:1515) General Information: reported-by: anonymous-id: 297b5320-0e0c-46cf-bc8e-b81b2f48285b eclipse-build-id: 4.5.0.I20150603-2000 eclipse-product: org.eclipse.epp.package.jee.product operating system: MacOSX 10.10.4 (x86_64) - cocoa jre-version: 1.8.0_45-b14 The following plug-ins were present on the execution stack (*): 1. org.eclipse.core.commands_3.7.0.v20150422-0725 2. org.eclipse.core.databinding.observable_1.5.0.v20150422-0725 3. org.eclipse.core.databinding_1.5.0.v20150422-0725 4. org.eclipse.core.runtime_3.11.0.v20150405-1723 5. org.eclipse.e4.core.commands_0.11.0.v20150422-0725 6. org.eclipse.e4.core.contexts_1.4.0.v20150421-2214 7. org.eclipse.e4.core.di_1.5.0.v20150421-2214 8. org.eclipse.e4.ui.bindings_0.11.0.v20150422-0725 9. org.eclipse.e4.ui.workbench_1.3.0.v20150531-1948 10. org.eclipse.e4.ui.workbench.swt_0.13.0.v20150504-0621 11. org.eclipse.equinox.app_1.3.300.v20150423-1356 12. org.eclipse.equinox.launcher_1.3.100.v20150511-1540 13. org.eclipse.jdt_3.11.0.v20150603-2000 14. org.eclipse.jdt.core_3.11.0.v20150602-1242 15. org.eclipse.jdt.ui_3.11.0.v20150527-0925 16. org.eclipse.jface_3.11.0.v20150602-1400 17. org.eclipse.jface.text_3.10.0.v20150603-1752 18. org.eclipse.recommenders.completion.rcp_2.2.0.v20150609-1848 19. org.eclipse.recommenders.subwords.rcp_2.2.0.v20150609-1848 20. org.eclipse.swt_3.104.0.v20150528-0211 21. org.eclipse.ui_3.107.0.v20150507-1945 22. org.eclipse.ui.ide.application_1.1.0.v20150422-0725 23. org.eclipse.ui.ide_3.11.0.v20150510-1749 Please note that: * Messages, stacktraces, and nested status objects may be shortened. * Bug fields like status, resolution, and whiteboard are sent back to reporters. * The list of present bundles and their respective versions was calculated by package naming heuristics. This may or may not reflect reality. Other Resources: * Report: https://dev.eclipse.org/recommenders/committers/confess/#/problems/559a5f8de4b08735226bab32 * Manual: https://dev.eclipse.org/recommenders/community/confess/#/guide Thank you for your assistance. Your friendly error-reports-inbox. This bug was created on behalf of andreas.sewe@codetrails.com.
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.