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Build Identifier: I don't know how to reproduce it. But since my update yesterday I am getting crazy, because every about 15-30 minutes I get this error and I have to close the tab, reopen the file and take care that my last changes have been saved. In the error log I could find the following error: Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench". java.lang.NullPointerException at org.eclipse.ui.texteditor.SelectMarkerRulerAction.includesRulerLine(SelectMarkerRulerAction.java:293) at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectAnnotationRulerAction.findJavaAnnotation(JavaSelectAnnotationRulerAction.java:157) at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectAnnotationRulerAction.update(JavaSelectAnnotationRulerAction.java:108) at org.eclipse.ui.texteditor.AbstractRulerActionDelegate.update(AbstractRulerActionDelegate.java:132) at org.eclipse.ui.texteditor.AbstractRulerActionDelegate.setActiveEditor(AbstractRulerActionDelegate.java:89) at org.eclipse.ui.internal.EditorPluginAction.editorChanged(EditorPluginAction.java:75) at org.eclipse.ui.internal.EditorActionBuilder$EditorContribution.editorChanged(EditorActionBuilder.java:83) at org.eclipse.ui.internal.EditorActionBuilder$ExternalContributor.setActiveEditor(EditorActionBuilder.java:129) at org.eclipse.ui.internal.EditorActionBars.partChanged(EditorActionBars.java:346) at org.eclipse.ui.internal.WorkbenchPage$3.run(WorkbenchPage.java:709) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.runtime.Platform.run(Platform.java:888) at org.eclipse.ui.internal.WorkbenchPage.activatePart(WorkbenchPage.java:698) at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3632) at org.eclipse.ui.internal.WorkbenchPage.toggleFastView(WorkbenchPage.java:3980) at org.eclipse.ui.internal.WorkbenchPage.hideFastView(WorkbenchPage.java:3960) at org.eclipse.ui.internal.FastViewPane$2.setState(FastViewPane.java:95) at org.eclipse.ui.internal.FastViewPane$3.handleEvent(FastViewPane.java:306) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123) 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:344) 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:622) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577) at org.eclipse.equinox.launcher.Main.run(Main.java:1410) at org.eclipse.equinox.launcher.Main.main(Main.java:1386) Reproducible: Couldn't Reproduce Steps to Reproduce: I have opened some file I am working on. After some time after I switched to another application(e.g. the browser) and I switch back, suddenly the tab shows me a blank text area with the only text error(hopefully I am able to add a screenshot). Then I have to close the tab and reopen the file and control if my last changes have been saved
Created attachment 203479 [details] the empty tab after the error occurs
Created attachment 203480 [details] the dialog which occurs when switching to the empty tab
Created attachment 203481 [details] Event details dialog of the error log
Which release and build id are you using? Can you try to provide steps? Maybe something went wrong with the update. I suggest you try to download a complete new build.
I've just tried a clean install of indigo on linux and I'm getting exactly the same issue. Session Data: eclipse.buildId=I20110613-1736 java.version=1.6.0_26 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_GB Framework arguments: -product org.eclipse.epp.package.jee.product Command-line arguments: -os linux -ws gtk -arch x86 -product org.eclipse.epp.package.jee.product Unfortunately, it's not possible to give steps to reproduce as it appears the issue is random. In my case, I have a few java classes opened up and after switching between the classes a number of times I'll select one of the java tabs and it will npe with exactly the same stack trace as reported above.
(In reply to comment #5) > I've just tried a clean install of indigo on linux and I'm getting exactly the > same issue. > > Session Data: > eclipse.buildId=I20110613-1736 > java.version=1.6.0_26 > java.vendor=Sun Microsystems Inc. > BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_GB > Framework arguments: -product org.eclipse.epp.package.jee.product > Command-line arguments: -os linux -ws gtk -arch x86 -product > org.eclipse.epp.package.jee.product > > Unfortunately, it's not possible to give steps to reproduce as it appears the > issue is random. In my case, I have a few java classes opened up and after > switching between the classes a number of times I'll select one of the java > tabs and it will npe with exactly the same stack trace as reported above. Very strange. Can you try with a build from here: http://download.eclipse.org/eclipse/downloads/drops/M20110909-1335/index.php
(In reply to comment #6) > > Very strange. Can you try with a build from here: > http://download.eclipse.org/eclipse/downloads/drops/M20110909-1335/index.php I'm having the same problems with build M20110909-1335. !SESSION eclipse.buildId=M20110909-1335 java.version=1.6.0_27 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Command-line arguments: -os linux -ws gtk -arch x86_64 -data eclipse/workspaces/indigo I can't explicitly describe how to reproduce it. But in my case this issue begin with exceptions as follows !ENTRY org.eclipse.ui 4 0 2011-09-17 14:04:19.754 !MESSAGE Unhandled event loop exception !STACK 0 org.eclipse.core.runtime.AssertionFailedException: assertion failed: at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110) at org.eclipse.core.runtime.Assert.isTrue(Assert.java:96) at org.eclipse.jface.text.source.AnnotationModel.getRegionAnnotationIterator(AnnotationModel.java:742) at org.eclipse.jface.text.source.AnnotationModel.getAnnotationIterator(AnnotationModel.java:700) at org.eclipse.jface.text.source.AnnotationRulerColumn.doPaint1(AnnotationRulerColumn.java:727) at org.eclipse.jface.text.source.AnnotationRulerColumn.doubleBufferPaint(AnnotationRulerColumn.java:541) at org.eclipse.jface.text.source.AnnotationRulerColumn.access$3(AnnotationRulerColumn.java:517) at org.eclipse.jface.text.source.AnnotationRulerColumn$1.paintControl(AnnotationRulerColumn.java:289) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:229) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267) at org.eclipse.swt.widgets.Control.gtk_expose_event(Control.java:2961) at org.eclipse.swt.widgets.Composite.gtk_expose_event(Composite.java:701) at org.eclipse.swt.widgets.Canvas.gtk_expose_event(Canvas.java:167) at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1739) at org.eclipse.swt.widgets.Control.windowProc(Control.java:5016) at org.eclipse.swt.widgets.Display.windowProc(Display.java:4408) at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method) at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8422) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1245) at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2276) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3207) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123) 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:344) 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:622) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577) at org.eclipse.equinox.launcher.Main.run(Main.java:1410) at org.eclipse.equinox.launcher.Main.main(Main.java:1386) Eventually switching tabs lead to NullPointerException, and Eclipse even cannot exit correctly. I don't have this problem on clean install/empty workspace without any plugins installed. But it seems start to happen after Eclipse Checkstyle plugin installation.
It seems that this bug related to error in Eclipse Checkstyle plugin version 5.4.0.201109110000, http://sourceforge.net/projects/eclipse-cs/forums/forum/274377/topic/4708915 For me, after installing snapshot version eclipse-cs http://eclipse-cs.sf.net/net.sf.eclipsecs-updatesite-5.4.1-SNAPSHOT-bin.zip the problem is gone.
I'll try the checkstyle snapshot and give you a feedback latest today at 16:00 CEST. I can remember now that checkstyle was updated.
Installing the snapshot version of the Checkstyle plugin resolves the issue for me - thanks Oleg.
Since I installed the snapshot of Checkstyle the error didn't occur anymore. I close this issue because it's caused by the Checkstyle Plugin
*** Bug 358045 has been marked as a duplicate of this bug. ***
*** Bug 358306 has been marked as a duplicate of this bug. ***
