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The following incident was reported via the automated error reporting: code: 10.000 plugin: org.eclipse.ltk.ui.refactoring_3.7.200.v20140625-1835 message: Internal Error fingerprint: 31134f4d exception class: java.lang.reflect.InvocationTargetException exception message: - number of children: 0 java.lang.reflect.InvocationTargetException: null at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:420) at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.run(RefactoringWizardDialog2.java:331) at org.eclipse.ltk.ui.refactoring.RefactoringWizard.internalPerformFinish(RefactoringWizard.java:637) at org.eclipse.ltk.ui.refactoring.UserInputWizardPage.performFinish(UserInputWizardPage.java:153) at org.eclipse.jdt.internal.ui.refactoring.ExtractInterfaceWizard$ExtractInterfaceInputPage.performFinish(ExtractInterfaceWizard.java:359) at org.eclipse.ltk.ui.refactoring.RefactoringWizard.performFinish(RefactoringWizard.java:710) at org.eclipse.ltk.internal.ui.refactoring.RefactoringWizardDialog2.okPressed(RefactoringWizardDialog2.java:455) at org.eclipse.jface.dialogs.Dialog.buttonPressed(Dialog.java:466) at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:619) 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:4362) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769) at org.eclipse.jface.window.Window.runEventLoop(Window.java:827) at org.eclipse.jface.window.Window.open(Window.java:803) at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation$1.run(RefactoringWizardOpenOperation.java:187) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:202) at org.eclipse.ltk.ui.refactoring.RefactoringWizardOpenOperation.run(RefactoringWizardOpenOperation.java:122) at org.eclipse.jdt.internal.ui.refactoring.actions.RefactoringStarter.activate(RefactoringStarter.java:38) at org.eclipse.jdt.internal.corext.refactoring.RefactoringExecutionStarter.startExtractInterfaceRefactoring(RefactoringExecutionStarter.java:290) at org.eclipse.jdt.ui.actions.ExtractInterfaceAction.run(ExtractInterfaceAction.java:147) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:279) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:251) at org.eclipse.jface.action.Action.runWithEvent(Action.java:473) 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:4362) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769) 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(null:-2) at sun.reflect.NativeMethodAccessorImpl.invoke(null:-1) at sun.reflect.DelegatingMethodAccessorImpl.invoke(null:-1) at java.lang.reflect.Method.invoke(null:-1) 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) caused by: java.lang.NullPointerException: null at org.eclipse.jdt.internal.corext.refactoring.structure.constraints.SuperTypeConstraintsModel.createMethodParameterVariable(SuperTypeConstraintsModel.java:409) at org.eclipse.jdt.internal.corext.refactoring.structure.constraints.SuperTypeConstraintsCreator.endVisit(SuperTypeConstraintsCreator.java:419) at org.eclipse.jdt.internal.corext.refactoring.structure.constraints.SuperTypeConstraintsCreator.endVisit(SuperTypeConstraintsCreator.java:533) at org.eclipse.jdt.core.dom.MethodInvocation.accept0(MethodInvocation.java:241) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759) at org.eclipse.jdt.core.dom.ExpressionStatement.accept0(ExpressionStatement.java:145) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782) at org.eclipse.jdt.core.dom.Block.accept0(Block.java:137) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759) at org.eclipse.jdt.core.dom.MethodDeclaration.accept0(MethodDeclaration.java:635) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782) at org.eclipse.jdt.core.dom.TypeDeclaration.accept0(TypeDeclaration.java:470) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782) at org.eclipse.jdt.core.dom.CompilationUnit.accept0(CompilationUnit.java:212) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.internal.corext.refactoring.structure.constraints.SuperTypeRefactoringProcessor.performFirstPass(SuperTypeRefactoringProcessor.java:742) at org.eclipse.jdt.internal.corext.refactoring.structure.constraints.SuperTypeRefactoringProcessor$3.acceptAST(SuperTypeRefactoringProcessor.java:1221) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:907) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:588) at org.eclipse.jdt.core.dom.ASTParser.createASTs(ASTParser.java:899) at org.eclipse.jdt.internal.corext.refactoring.structure.constraints.SuperTypeRefactoringProcessor.solveSuperTypeConstraints(SuperTypeRefactoringProcessor.java:1216) at org.eclipse.jdt.internal.corext.refactoring.structure.ExtractInterfaceProcessor.access$2(ExtractInterfaceProcessor.java:1) at org.eclipse.jdt.internal.corext.refactoring.structure.ExtractInterfaceProcessor$2.acceptAST(ExtractInterfaceProcessor.java:1097) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:907) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:588) at org.eclipse.jdt.core.dom.ASTParser.createASTs(ASTParser.java:899) at org.eclipse.jdt.internal.corext.refactoring.structure.ExtractInterfaceProcessor.rewriteTypeOccurrences(ExtractInterfaceProcessor.java:1078) at org.eclipse.jdt.internal.corext.refactoring.structure.ExtractInterfaceProcessor.createChangeManager(ExtractInterfaceProcessor.java:422) at org.eclipse.jdt.internal.corext.refactoring.structure.ExtractInterfaceProcessor.checkFinalConditions(ExtractInterfaceProcessor.java:245) at org.eclipse.ltk.core.refactoring.participants.ProcessorBasedRefactoring.checkFinalConditions(ProcessorBasedRefactoring.java:224) at org.eclipse.ltk.core.refactoring.CheckConditionsOperation.run(CheckConditionsOperation.java:85) at org.eclipse.ltk.core.refactoring.CreateChangeOperation.run(CreateChangeOperation.java:121) at org.eclipse.ltk.core.refactoring.PerformChangeOperation.run(PerformChangeOperation.java:209) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2241) at org.eclipse.ltk.internal.ui.refactoring.WorkbenchRunnableAdapter.run(WorkbenchRunnableAdapter.java:87) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119) General Information: reported-by: Bruno M anonymous-id: e7461b45-d894-4cd5-a112-ff71f2a3b1ad eclipse-build-id: 4.5.0.I20150603-2000 eclipse-product: org.eclipse.epp.package.committers.product operating system: Windows7 6.1.0 (x86_64) - win32 jre-version: 1.8.0_45-b14 The following plug-ins were present on the execution stack (*): 1. org.eclipse.core.databinding.observable_1.5.0.v20150422-0725 2. org.eclipse.core.databinding_1.5.0.v20150422-0725 3. org.eclipse.core.resources_3.10.0.v20150423-0755 4. org.eclipse.core.runtime_3.11.0.v20150405-1723 5. org.eclipse.e4.ui.workbench_1.3.0.v20150531-1948 6. org.eclipse.e4.ui.workbench.swt_0.13.0.v20150504-0621 7. org.eclipse.equinox.app_1.3.300.v20150423-1356 8. org.eclipse.equinox.launcher_1.3.100.v20150511-1540 9. org.eclipse.jdt.core_3.11.0.v20150602-1242 10. org.eclipse.jdt_3.11.0.v20150603-2000 11. org.eclipse.jdt.ui_3.11.0.v20150527-0925 12. org.eclipse.jface_3.11.0.v20150602-1400 13. org.eclipse.ltk.core.refactoring_3.6.200.v20140826-0859 14. org.eclipse.ltk.ui.refactoring_3.7.200.v20140625-1835 15. org.eclipse.swt_3.104.0.v20150528-0211 16. org.eclipse.ui_3.107.0.v20150507-1945 17. org.eclipse.ui.ide.application_1.1.0.v20150422-0725 18. 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/558c0295e4b08735226ac886 * Manual: https://dev.eclipse.org/recommenders/community/confess/#/guide Thank you for your assistance. Your friendly error-reports-inbox.
I voted on this bug, since it's impact is rather high, as it breaks well over 50% of attempts to refactor, and nearly 100% of such attempts that span numerous classes and projects. Personally, I use refactoring several times an hour, so this is painful.
(In reply to Richard Steiger from comment #1) > I voted on this bug, since it's impact is rather high, as it breaks well > over 50% of attempts to refactor, and nearly 100% of such attempts that span > numerous classes and projects. Personally, I use refactoring several times > an hour, so this is painful. Can you provide steps to reproduce the problem?
I have yet to find a scenario that reliably repros this bug. It appears that changing a method name is reasonably likely to fail when the method is called from methods declared in multiple types, where these other types include ones related by inheritance, and others not related by inheritance, as well as types in the same and other projects. While I'll endeavor to discern a more precise pattern, I will say that the MTBF has shrunk as the number of projects in my workspace has grown into the dozens, and number of classes approaching 10K.
Based on recent recurrences of this bug, the typical case involved renaming a method M defined in some class A in project P, extended by class B in project Q that defines a method that overrides M. Am reporting before attempting a full repo case, just in case it's a useful hint to someone experienced in the refactoring machinery.
(In reply to Richard Steiger from comment #4) > Based on recent recurrences of this bug, the typical case involved renaming > a method M defined in some class A in project P, extended by class B in > project Q that defines a method that overrides M. Noopur, please try that.
(In reply to Richard Steiger from comment #4) > Based on recent recurrences of this bug, the typical case involved renaming > a method M defined in some class A in project P, extended by class B in > project Q that defines a method that overrides M. Am reporting before > attempting a full repo case, just in case it's a useful hint to someone > experienced in the refactoring machinery. I cannot reproduce it using these steps. The stacktrace shows that it happens during Extract Interface refactoring (not Rename refactoring). The code at NPE location (SuperTypeConstraintsModel.java:409) indicates that IMethodBinding.getDeclaringClass() returns null. So it could be that there is some compile error in the code while applying Extract interface refactoring and hence the bindings are not created properly. Please try to provide a code snippet that can reproduce this error.
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.
