Bugzilla – Full Text Bug Listing
| Summary: | [platform] NPE in DetachedDropAgent.drop | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Eclipse Project] Platform | Reporter: | EPP Error Reports <error-reports-inbox> | ||||
| Component: | UI | Assignee: | Stefan Xenos <sxenos> | ||||
| Status: | RESOLVED FIXED | QA Contact: | |||||
| Severity: | normal | ||||||
| Priority: | P3 | CC: | c4rrizo, cedric.brun, daniel_megert, eclipse, jacek.wozniak, marcel.bruch, nobody, ray, sxenos, zakgof | ||||
| Version: | 4.5 | Flags: | daniel_megert:
review+
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| Target Milestone: | 4.6 RC1 | ||||||
| Hardware: | All | ||||||
| OS: | All | ||||||
| See Also: |
https://git.eclipse.org/r/71818 https://git.eclipse.org/c/platform/eclipse.platform.ui.git/commit/?id=6ef2ad0aea0b7208066f047de8d2bcbefc65a5af https://bugs.eclipse.org/bugs/show_bug.cgi?id=515879 |
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| Whiteboard: | |||||||
| Attachments: |
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I've looked up the top-3 most similar bug groups and printed the closest bug of
each group below. This report may or may not be duplicate of those (low or sim-
ilar scores for all entries may indicate that this hasn't been reported yet):
> 1. Bug 446585: [platform] Unable to resolve plug-in "platform:/plugin/org.eclipse.mylyn.tasks.ui/icons/... (err_grp: eead2761) – 17,7
> 2. Bug 445474: Conflicting handlers for org.eclipse.ui.navigate.backwardHistory: {ActionHand... (err_grp: 711b4029) – 17,7
> 3. Bug 445475: [p2] Error in cflow of InstallWizard.planChanged (err_grp: 3662b207) – 17,7
If this report actually is a duplicate of those, please mark it as such. This
information helps me to improve the recommendations further for the next issue.
Thank you for your assistance.
Your friendly error-reports-inbox.
Moving to platform team for review. *** Bug 452004 has been marked as a duplicate of this bug. *** Pop-up asked me to updated this bug after encountering. I opened the "Git Staging" view and then tried to dragged that tab to its own window. It was the first time I had ever opened the Git Staging view. When I tried to re-create the error and pop-up notification, I was unable to. Maybe related to virgin run/opening of Git Staging view? NOTE: Running eclipse remotely on a head-less box via X over ssh. i.e. ssh -X headless "eclipse" Remote box is Redhat, local workstation is Mint. I can reproduce this bug once per Eclipse instance when detaching a part. Here is a little tricky way to reproduce it but it works for me every time (and for my RCP end users). OS: Windows 7, Aero theme. 1. Restart Eclipse 2. From a part stack, drag a part slowly to the edge of the workbench window. When dragging over the workbench edge, the mouse cursor changes like this: (a) "Hand"+frame (inside workbench - ready to be dropped) - > (b) "Stop sign" (over edge, no frame - not possible to drop) -> (c) "Hand" (outer edge, no frame) -> (d) "Hand" + frame (possible to drop it as detached window). 3. Drop it when you are at (c): - the mouse pointer is on the outer edge of the window - it has the hand cursor - no frame is visible then this NullPointerException occurs. If I move the part out of the workbench (so the target frame is visible) I can not reproduce the issue and need to start over from point 1. I am not sure why eclipse suggested I hit this bug. Or rather, I saw no symptom of the problem. I am running on Ubuntu 14.04 with WOLips, a plugin for interacting with WebObjects components.
I did see this in the .log file:
!ENTRY org.eclipse.ui 4 0 2015-09-08 14:37:31.412
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.NullPointerException
at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60)
at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159)
at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:93)
at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276)
at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243)
at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4481)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1327)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3819)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3430)
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(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
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)
at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
~
Hello, I can confirm this bug happening in Ubuntu 14.04 with Eclipse Mars. I don't see a clear pattern but when eclipse hangs it always leaves a blank tooltip like it was trying to render a javadoc or something. Actually I thought it was the old xulrunner bug that I resolved by setting mozillia as the swt.browser, but this is clearly not the same bug. This is the error trace: eclipse.buildId=4.5.0.I20150603-2000 java.version=1.7.0_80 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments: -product org.eclipse.epp.package.jee.product -showlocation Command-line arguments: -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.jee.product -showlocation Unhandled event loop exception: java.lang.NullPointerException at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60) at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159) at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:93) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4481) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1327) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3819) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3430) 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(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) 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) at org.eclipse.equinox.launcher.Main.main(Main.java:1488) Scenario to reproduce in Eclipse IDE: - Open Eclipse, open at least two editors is the same stack (java source files in my case) - Restart Eclipse (File / Restart) - Try to drag and drop an *inactive* editor tab out of main window (do it quickly !) Editor does not get detached. In you check Error Log, exception is logged: Unhandled event loop exception java.lang.NullPointerException at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60) at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159) at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:111) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4353) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4172) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3761) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135) 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(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) Created attachment 257892 [details]
Proposed patch
(In reply to Alexander Zakusylo from comment #9) > Created attachment 257892 [details] > Proposed patch Thanks for the patch. Can you please turn into a gerrit review? https://wiki.eclipse.org/Platform_UI/How_to_Contribute New Gerrit change created: https://git.eclipse.org/r/71818 I stumbled on this while investigating bug 492842. Fix attached. Gerrit change https://git.eclipse.org/r/71818 was merged to [master]. Commit: http://git.eclipse.org/c/platform/eclipse.platform.ui.git/commit/?id=6ef2ad0aea0b7208066f047de8d2bcbefc65a5af Setting review+ since Sergey reviewed the Gerrit change. Guys, please set the review+ flag when reviewing and approving a change for RC1. For details see https://www.eclipse.org/eclipse/development/plans/freeze_plan_4_6.php |
Hello committers, we received a new error report for Eclipse 4.5.0.I20140918-0330. General Information: anonymous-id: cb778dfd-6956-4ebb-9e2f-81dcdcb9cf51 eclipse-build-id: 4.5.0.I20140918-0330 eclipse-product: org.eclipse.epp.package.modeling.product operating system: Linux 3.13.0 (x86_64) - gtk java-runtime-version: 1.8.0_20-b26 The following plug-ins were present on the execution stack (*): 1. org.eclipse.core.databinding.observable_1.4.1.v20140910-2107 2. org.eclipse.core.databinding_1.4.100.v20140910-2107 3. org.eclipse.core.runtime_3.10.0.v20140724-1132 4. org.eclipse.e4.ui.workbench_1.2.0.v20140905-1352 5. org.eclipse.e4.ui.workbench.swt_0.12.100.v20140908-1525 6. org.eclipse.equinox.app_1.3.200.v20130910-1609 7. org.eclipse.equinox.launcher_1.3.0.v20140415-2008 8. org.eclipse.swt_3.104.0.v20140916-1012 9. org.eclipse.ui_3.107.0.v20140911-1616 10. org.eclipse.ui.ide.application_1.0.600.v20140909-1818 11. org.eclipse.ui.ide_3.10.100.v20140905-0917 Error Status: code: 0 plugin: org.eclipse.ui_3.107.0.v20140911-1616 message: HIDDEN fingerprint: 3c84f4d0 exception class: java.lang.NullPointerException exception message: HIDDEN number of children: 0 java.lang.NullPointerException: HIDDEN at org.eclipse.e4.ui.workbench.addons.dndaddon.DetachedDropAgent.drop(DetachedDropAgent.java:60) at org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent.dragFinished(DragAgent.java:159) at org.eclipse.e4.ui.workbench.addons.dndaddon.PartDragAgent.dragFinished(PartDragAgent.java:93) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.finishDrag(DnDManager.java:276) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager.startDrag(DnDManager.java:243) at org.eclipse.e4.ui.workbench.addons.dndaddon.DnDManager$1.dragDetected(DnDManager.java:87) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:127) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4464) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3803) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3413) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:637) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:580) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:141) 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(NativeMethodAccessorImpl.java:-2) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Messages, stacktraces, and nested status objects may be shortened. Please visit http://dev.eclipse.org/recommenders/committers/confess/0.5/reports/543e6c79e4b0a3790171b478 for the complete error log. Some general information and guidelines about how to use this bug report: 1. Feel free to move this bug to your own product and components. Please note that this bug is only accessible to Eclipse committers. If you move this bug please make sure that it's still in the "Security Advisor" group. 2. The bug contents of the fields status, resolution, keywords, and whitelist are presented to reporters. If you needs more information, please set the keyword "needinfo". This will trigger a specialized dialog asking the user to provide further details. 3. Use the following resolutions for the following situations: * CLOSED / FIXED: This bug has been fixed. Please provide additional information in the whiteboard field. * CLOSED / WORKSFORME: Use this resolution if you can't reproduce this issue and request further information. 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Your friendly error-reports-inbox. -- * Note: The list of present bundles and their respective versions was calculated by package naming heuristics. This may or may not reflect reality.