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The following incident was reported via the automated error reporting: code: 2 plugin: org.eclipse.jface_3.11.0.v20150121-1751 message: Problems occurred when invoking code from plug-in: "org.eclipse.jface". fingerprint: 98a51b78 exception class: java.lang.IllegalArgumentException exception message: Comparison method violates its general contract! number of children: 0 java.lang.IllegalArgumentException: Comparison method violates its general contract! at java.util.TimSort.mergeHi(TimSort.java:868) at java.util.TimSort.mergeAt(TimSort.java:485) at java.util.TimSort.mergeForceCollapse(TimSort.java:426) at java.util.TimSort.sort(TimSort.java:223) at java.util.TimSort.sort(TimSort.java:173) at java.util.Arrays.sort(Arrays.java:659) at org.eclipse.jface.viewers.ViewerComparator.sort(ViewerComparator.java:189) at org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:640) at org.eclipse.jface.viewers.AbstractTreeViewer.updateChildren(AbstractTreeViewer.java:2647) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1916) at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:684) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1891) at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1848) at org.eclipse.jface.viewers.StructuredViewer$8.run(StructuredViewer.java:1554) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1462) at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:366) at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1423) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1551) at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:534) at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1507) at org.eclipse.jdt.internal.ui.workingsets.AbstractWorkingSetWizardPage.createControl(AbstractWorkingSetWizardPage.java:223) at org.eclipse.jdt.internal.ui.workingsets.JavaWorkingSetPage.createControl(JavaWorkingSetPage.java:99) at org.eclipse.jface.wizard.WizardDialog.updateForPage(WizardDialog.java:1216) at org.eclipse.jface.wizard.WizardDialog.access$4(WizardDialog.java:1208) at org.eclipse.jface.wizard.WizardDialog$8.run(WizardDialog.java:1197) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.wizard.WizardDialog.showPage(WizardDialog.java:1194) at org.eclipse.ui.internal.dialogs.WorkingSetTypePage.handleDoubleClick(WorkingSetTypePage.java:200) at org.eclipse.ui.internal.dialogs.WorkingSetTypePage.access$1(WorkingSetTypePage.java:198) at org.eclipse.ui.internal.dialogs.WorkingSetTypePage$2.doubleClick(WorkingSetTypePage.java:123) at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:832) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:50) at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:173) at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:829) at org.eclipse.jface.viewers.StructuredViewer.handleDoubleSelect(StructuredViewer.java:1150) at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1263) at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:252) at org.eclipse.jface.util.OpenStrategy.access$0(OpenStrategy.java:249) at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:311) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4200) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669) at org.eclipse.jface.window.Window.runEventLoop(Window.java:827) at org.eclipse.jface.window.Window.open(Window.java:803) at org.eclipse.ui.internal.dialogs.AbstractWorkingSetDialog.createWorkingSet(AbstractWorkingSetDialog.java:268) at org.eclipse.ui.internal.dialogs.AbstractWorkingSetDialog$1.widgetSelected(AbstractWorkingSetDialog.java:125) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4200) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669) at org.eclipse.jface.window.Window.runEventLoop(Window.java:827) at org.eclipse.jface.window.Window.open(Window.java:803) at org.eclipse.ui.internal.dialogs.AbstractWorkingSetDialog.open(AbstractWorkingSetDialog.java:313) at org.eclipse.ui.dialogs.WorkingSetConfigurationBlock$1.widgetSelected(WorkingSetConfigurationBlock.java:304) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4200) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669) at org.eclipse.jface.window.Window.runEventLoop(Window.java:827) at org.eclipse.jface.window.Window.open(Window.java:803) at org.eclipse.ui.internal.handlers.WizardHandler$Import.executeHandler(WizardHandler.java:158) at org.eclipse.ui.internal.handlers.WizardHandler.execute(WizardHandler.java:290) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295) 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:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:247) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:229) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:149) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210) at org.eclipse.ui.internal.handlers.LegacyHandlerService.executeCommand(LegacyHandlerService.java:343) at org.eclipse.ui.internal.actions.CommandAction.runWithEvent(CommandAction.java:160) at org.eclipse.ui.internal.actions.CommandAction.run(CommandAction.java:175) at org.eclipse.ui.actions.ImportResourcesAction.run(ImportResourcesAction.java:99) at org.eclipse.ui.actions.BaseSelectionListenerAction.runWithEvent(BaseSelectionListenerAction.java:170) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:595) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:511) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:420) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4200) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1467) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1490) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1475) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1279) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4042) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3669) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:648) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:592) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) 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:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) General Information: reported-by: Sebastian Zarnekow anonymous-id: 4bea9201-b28a-4c92-b55b-aabb7c747f36 eclipse-build-id: 4.5.0.I20150203-1300 eclipse-product: org.eclipse.epp.package.committers.product operating system: MacOSX 10.10.2 (x86_64) - cocoa jre-version: 1.7.0_75-b13 The following plug-ins were present on the execution stack (*): 1. org.eclipse.core.commands_3.6.100.v20141026-0121 2. org.eclipse.core.databinding.observable_1.4.1.v20140910-2107 3. org.eclipse.core.databinding_1.4.100.v20141002-1314 4. org.eclipse.core.runtime_3.10.0.v20150112-1422 5. org.eclipse.e4.core.commands_0.10.2.v20140424-2344 6. org.eclipse.e4.core.contexts_1.3.100.v20140407-1019 7. org.eclipse.e4.core.di_1.4.0.v20140813-2240 8. org.eclipse.e4.ui.workbench_1.3.0.v20150113-2327 9. org.eclipse.e4.ui.workbench.swt_0.12.100.v20150114-0905 10. org.eclipse.equinox.app_1.3.200.v20130910-1609 11. org.eclipse.equinox.launcher_1.3.0.v20140415-2008 12. org.eclipse.jdt.ui_3.10.100.v20150212-0819 13. org.eclipse.jdt_3.11.0.v20150217-0800 14. org.eclipse.jface_3.11.0.v20150121-1751 15. org.eclipse.swt_3.104.0.v20150203-2243 16. org.eclipse.ui_3.107.0.v20150107-0903 17. org.eclipse.ui.ide.application_1.0.600.v20150120-1542 18. org.eclipse.ui.ide_3.10.100.v20150126-1117 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/54eae059e4b045c0d92bc017 * Manual: https://dev.eclipse.org/recommenders/community/confess/#/guide Thank you for your assistance. Your friendly error-reports-inbox.
*** This bug has been marked as a duplicate of bug 460618 ***