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Build 3.5M3 When fixing compiler bug 257849, I triggered a type hierarchy in a workspace where the offending unit (causing a NPE) to the compiler was eligible amongst potential subtypes (so far all it fine). During hierarchy resolution, compiler NPE occurred, and NO hierarchy was surfaced. In this particular case, the offending unit had nothing to do to the hierarchy focus. Hierarchy resolution could have been more resilient and scope the error to avoid no hierarchy at all in the end (i.e. it could be missing a portion of the hierarchy until compiler error is resolved). !ENTRY org.eclipse.jdt.ui 4 10001 2008-12-08 12:30:02.755 !MESSAGE Internal Error !STACK 0 java.lang.reflect.InvocationTargetException at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:415) at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:759) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:756) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2577) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle.ensureRefreshedTypeHierarchy(TypeHierarchyLifeCycle.java:122) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyViewPart.updateInput(TypeHierarchyViewPart.java:534) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyViewPart.setInputElement(TypeHierarchyViewPart.java:497) at org.eclipse.jdt.internal.ui.util.OpenTypeHierarchyUtil.openInViewPart(OpenTypeHierarchyUtil.java:95) at org.eclipse.jdt.internal.ui.util.OpenTypeHierarchyUtil.open(OpenTypeHierarchyUtil.java:72) at org.eclipse.jdt.ui.actions.OpenTypeHierarchyAction.run(OpenTypeHierarchyAction.java:229) at org.eclipse.jdt.ui.actions.OpenTypeHierarchyAction.run(OpenTypeHierarchyAction.java:179) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:278) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250) 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:471) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:823) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:879) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:570) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:511) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:126) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1190) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1002) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1040) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1036) at org.eclipse.swt.widgets.Widget.wmKeyDown(Widget.java:1659) at org.eclipse.swt.widgets.Control.WM_KEYDOWN(Control.java:4247) at org.eclipse.swt.widgets.Control.windowProc(Control.java:3943) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:342) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4584) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2392) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3468) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2384) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2348) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2200) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:495) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:333) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:490) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193) 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:366) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177) 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:550) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:505) at org.eclipse.equinox.launcher.Main.run(Main.java:1237) at org.eclipse.equinox.launcher.Main.main(Main.java:1213) Caused by: java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.internalResolveType(ParameterizedSingleTypeReference.java:197) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.resolveType(ParameterizedSingleTypeReference.java:282) at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveTypeArgument(TypeReference.java:209) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.internalResolveType(ParameterizedSingleTypeReference.java:180) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.resolveType(ParameterizedSingleTypeReference.java:282) at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveSuperType(TypeReference.java:179) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.findSupertype(ClassScope.java:1164) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectSuperInterfaces(ClassScope.java:955) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:1008) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectMemberTypes(ClassScope.java:832) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:1015) at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:294) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:250) at org.eclipse.jdt.internal.core.hierarchy.HierarchyResolver.resolve(HierarchyResolver.java:759) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.buildForProject(IndexBasedHierarchyBuilder.java:226) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.buildFromPotentialSubtypes(IndexBasedHierarchyBuilder.java:306) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.build(IndexBasedHierarchyBuilder.java:131) at org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy.compute(TypeHierarchy.java:300) at org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy.refresh(TypeHierarchy.java:1255) at org.eclipse.jdt.internal.core.CreateTypeHierarchyOperation.executeOperation(CreateTypeHierarchyOperation.java:90) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:721) at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:781) at org.eclipse.jdt.internal.core.SourceType.newTypeHierarchy(SourceType.java:814) at org.eclipse.jdt.internal.core.SourceType.newTypeHierarchy(SourceType.java:772) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle.createTypeHierarchy(TypeHierarchyLifeCycle.java:133) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle.doHierarchyRefresh(TypeHierarchyLifeCycle.java:172) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle$1.run(TypeHierarchyLifeCycle.java:113) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121) Root exception: java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.internalResolveType(ParameterizedSingleTypeReference.java:197) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.resolveType(ParameterizedSingleTypeReference.java:282) at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveTypeArgument(TypeReference.java:209) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.internalResolveType(ParameterizedSingleTypeReference.java:180) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.resolveType(ParameterizedSingleTypeReference.java:282) at org.eclipse.jdt.internal.compiler.ast.TypeReference.resolveSuperType(TypeReference.java:179) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.findSupertype(ClassScope.java:1164) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectSuperInterfaces(ClassScope.java:955) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:1008) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectMemberTypes(ClassScope.java:832) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:1015) at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:294) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:250) at org.eclipse.jdt.internal.core.hierarchy.HierarchyResolver.resolve(HierarchyResolver.java:759) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.buildForProject(IndexBasedHierarchyBuilder.java:226) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.buildFromPotentialSubtypes(IndexBasedHierarchyBuilder.java:306) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.build(IndexBasedHierarchyBuilder.java:131) at org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy.compute(TypeHierarchy.java:300) at org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy.refresh(TypeHierarchy.java:1255) at org.eclipse.jdt.internal.core.CreateTypeHierarchyOperation.executeOperation(CreateTypeHierarchyOperation.java:90) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:721) at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:781) at org.eclipse.jdt.internal.core.SourceType.newTypeHierarchy(SourceType.java:814) at org.eclipse.jdt.internal.core.SourceType.newTypeHierarchy(SourceType.java:772) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle.createTypeHierarchy(TypeHierarchyLifeCycle.java:133) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle.doHierarchyRefresh(TypeHierarchyLifeCycle.java:172) at org.eclipse.jdt.internal.ui.typehierarchy.TypeHierarchyLifeCycle$1.run(TypeHierarchyLifeCycle.java:113) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Original testcase: public class ProblemClass { public interface ID {}; public abstract class DomainObject<T extends ID> {}; public interface DAO<T extends DomainObject<ID>> {}; public abstract class HibernateDAOBase<DomainObject> implements DAO<DomainObject<ID>> {}; } located in a project dependent of jdt/core (a testing project), and trying to construct a type hierarchy on (compiler.ast)TypeReference from jdt/core.
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.
