Community
Participate
Working Groups
Hello there is a Nullpointer Exception in TextViewer. I'll push a bugfix to gerrit. java.lang.NullPointerException: Cannot invoke "org.eclipse.swt.custom.StyledText.getSelectionRanges()" because "this.fTextWidget" is null at org.eclipse.jface.text.TextViewer.computeSelection(TextViewer.java:2525) at org.eclipse.jface.text.TextViewer.getSelection(TextViewer.java:2481) at org.eclipse.debug.internal.ui.views.variables.VariablesView$SelectionProviderWrapper.getSelection(VariablesView.java:205) at org.eclipse.ui.internal.services.WorkbenchSourceProvider.updateSelection(WorkbenchSourceProvider.java:129) at org.eclipse.ui.internal.services.WorkbenchSourceProvider.getCurrentState(WorkbenchSourceProvider.java:112) at org.eclipse.ui.internal.services.WorkbenchSourceProvider.lambda$2(WorkbenchSourceProvider.java:614) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1280) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1059) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1084) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1069) at org.eclipse.swt.widgets.Decorations.WM_ACTIVATE(Decorations.java:1521) at org.eclipse.swt.widgets.Shell.WM_ACTIVATE(Shell.java:2314) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4750) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:340) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1480) at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2286) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5002) at org.eclipse.swt.internal.win32.OS.DestroyWindow(Native Method) at org.eclipse.swt.widgets.Control.destroyWidget(Control.java:782) at org.eclipse.swt.widgets.Shell.destroyWidget(Shell.java:732) at org.eclipse.swt.widgets.Widget.release(Widget.java:826) at org.eclipse.swt.widgets.Widget.dispose(Widget.java:423) at org.eclipse.swt.widgets.Decorations.dispose(Decorations.java:392) at org.eclipse.jface.window.Window.close(Window.java:335) at org.eclipse.jface.dialogs.Dialog.close(Dialog.java:988) at org.eclipse.ui.internal.statushandlers.InternalDialog.close(InternalDialog.java:651) at org.eclipse.jface.dialogs.Dialog.okPressed(Dialog.java:948) at org.eclipse.jface.dialogs.Dialog.buttonPressed(Dialog.java:468) at org.eclipse.ui.internal.statushandlers.InternalDialog.buttonPressed(InternalDialog.java:185) at org.eclipse.jface.dialogs.Dialog.lambda$0(Dialog.java:619) at org.eclipse.swt.events.SelectionListener$1.widgetSelected(SelectionListener.java:84) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:252) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4243) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1060) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4060) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3632) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1154) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1045) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:644) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:551) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:156) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596) at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
New Gerrit change created: https://git.eclipse.org/r/c/platform/eclipse.platform.text/+/191989
Gerrit change https://git.eclipse.org/r/c/platform/eclipse.platform.text/+/191989 was merged to [master]. Commit: http://git.eclipse.org/c/platform/eclipse.platform.text.git/commit/?id=be2ef6867a344a6ed42a235f139ab695bd8e31e8
Thanks, Denis!
*** Bug 579343 has been marked as a duplicate of this bug. ***
Seem to be regression from bug 466532, however that was changed in 4.22, not in 4.23, so there must be something else changed that uncovered this NPE. @Denis, Gunnar: was there any additional error in the log before the NPE?
@Andrey Loskutov No, no other error in the error log. This NPE was not reproducible and a very rare encounter. I've looked into the source code and i've found the regression. Best regards, Denis
This problem was actually found in a 4.22. I've corrected the "Version" flag. Sorry for the confusion.
Is it possible to release this bug fix to the Eclipse update site https://download.eclipse.org/releases/2021-12/? Unfortunately, this bug happens often if one uses the compare view. I would really appreciate it.
I second the Marcel's request.
