Bugzilla – Full Text Bug Listing
| Summary: | NPE in TypeExtensionManager.getProperty | ||
|---|---|---|---|
| Product: | [Eclipse Project] Platform | Reporter: | Igor Fedorenko <igor> |
| Component: | UI | Assignee: | Platform-UI-Inbox <Platform-UI-Inbox> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | critical | ||
| Priority: | P3 | CC: | Lars.Vogel, ob1.eclipse, pwebster, remy.suen |
| Version: | 4.2 | ||
| Target Milestone: | --- | ||
| Hardware: | PC | ||
| OS: | Mac OS X - Carbon (unsup.) | ||
| Whiteboard: | |||
| Bug Depends on: | |||
| Bug Blocks: | 370757 | ||
Hmmm, which JRE/JVM are you using? For line 95 I see: Class clazz= receiver instanceof Class ? (Class)receiver : receiver.getClass(); which AFAICT won't NPE ever. PW "receiver instanceof Class" is false when reciever==null, which results in attempt to evaluate receiver.getClass() and subsequent NPE. I am using Apple 1.6 bash-3.2$ java -version java version "1.6.0_29" Java(TM) SE Runtime Environment (build 1.6.0_29-b11-402-10M3527) Java HotSpot(TM) 64-Bit Server VM (build 20.4-b02-402, mixed mode) (In reply to comment #2) > "receiver instanceof Class" is false when reciever==null, which results in > attempt to evaluate receiver.getClass() and subsequent NPE. Sorry, you're right. PW We still haven't been able to reproduce this. Can you repo it with the tychodemo project and M6? PW Igor, do you still see this in Eclipse 4.3 or Eclipse 4.4? Similar to Paul, I'm unable to reproduce it. I therefore close this bug as fixed. Please reopen if you still see the problem. No, I haven't seen this since 4.2. Thank you for closing this for me. |
When using m2e pom.xml editor with 4.2M4 I fairly frequently get "Internal Error" popup with the following exception written to .log file. Killing Eclipse (and loosing all unsaved work), appears to be the only way to recover. !ENTRY org.eclipse.e4.ui.workbench 4 0 2011-12-12 12:23:30.142 !MESSAGE Internal Error !STACK 0 org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException) at org.eclipse.swt.SWT.error(SWT.java:4300) at org.eclipse.swt.SWT.error(SWT.java:4215) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:138) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3945) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3622) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:977) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:893) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:91) at org.eclipse.ui.internal.Workbench$3.run(Workbench.java:565) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:520) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124) 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:352) 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:624) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:579) at org.eclipse.equinox.launcher.Main.run(Main.java:1433) Caused by: java.lang.NullPointerException at org.eclipse.core.internal.expressions.TypeExtensionManager.getProperty(TypeExtensionManager.java:95) at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:96) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateOr(CompositeExpression.java:68) at org.eclipse.core.internal.expressions.OrExpression.evaluate(OrExpression.java:21) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.AndExpression.evaluate(AndExpression.java:29) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.IterateExpression.evaluate(IterateExpression.java:189) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.AndExpression.evaluate(AndExpression.java:29) at org.eclipse.ui.internal.handlers.HandlerActivation.evaluate(HandlerActivation.java:108) at org.eclipse.ui.internal.handlers.LegacyHandlerService$HandlerSelectionFunction.compute(LegacyHandlerService.java:110) at org.eclipse.e4.core.internal.contexts.ValueComputation.get(ValueComputation.java:59) at org.eclipse.e4.core.internal.contexts.EclipseContext.internalGet(EclipseContext.java:203) at org.eclipse.e4.core.internal.contexts.EclipseContext.get(EclipseContext.java:191) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.lookUpHandler(HandlerServiceImpl.java:46) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.canExecute(HandlerServiceImpl.java:99) at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerRendererFilter.updateElementVisibility(MenuManagerRendererFilter.java:344) at org.eclipse.e4.ui.workbench.renderers.swt.MenuManagerRendererFilter.updateElementVisibility(MenuManagerRendererFilter.java:326) at org.eclipse.ui.internal.WorkbenchWindow$6.run(WorkbenchWindow.java:562) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135) ... 23 more