Blank line viewing thread stack in thread overview

[eclipsewebmaster]

| --- | --- |
| Bugzilla Link | 551360 |
| Status | NEW |
| Importance | P3 normal |
| Reported | Sep 23, 2019 03:24 EDT |
| Modified | Sep 23, 2019 03:24 EDT |
| Version | 1.9 |
| Reporter | Andrew Johnson |

Description

With a dump from IBM Java 8 I ran the thread overview query and expanded one of the threads in the tree view. I then expanded the stack frames and saw that one was blank apart from an outbound object icon.

In the error log I saw:

java.lang.NullPointerException
at org.eclipse.mat.snapshot.query.ObjectListResult$Tree.suffix(ObjectListResult.java:267)
at org.eclipse.mat.inspections.threads.ThreadOverviewQuery$ThreadInfoList.suffix(ThreadOverviewQuery.java:440)
at org.eclipse.mat.ui.internal.viewer.RefinedResultViewer.applyTextAndImage(RefinedResultViewer.java:410)
at org.eclipse.mat.ui.internal.viewer.RefinedTreeViewer.doUpdateChild(RefinedTreeViewer.java:491)
at org.eclipse.mat.ui.internal.viewer.RefinedTreeViewer.doUpdateChildren(RefinedTreeViewer.java:477)
at org.eclipse.mat.ui.internal.viewer.RefinedTreeViewer.doExpand(RefinedTreeViewer.java:202)
at org.eclipse.mat.ui.internal.viewer.RefinedTreeViewer.access$0(RefinedTreeViewer.java:164)
at org.eclipse.mat.ui.internal.viewer.RefinedTreeViewer$1.handleEvent(RefinedTreeViewer.java:74)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:86)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4118)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1052)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1076)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1061)
at org.eclipse.swt.widgets.Tree.wmNotifyChild(Tree.java:7532)
at org.eclipse.swt.widgets.Control.wmNotify(Control.java:5786)
at org.eclipse.swt.widgets.Composite.wmNotify(Composite.java:2001)
at org.eclipse.swt.widgets.Control.WM_NOTIFY(Control.java:5344)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4821)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4757)
at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
at org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2197)
at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java:1551)
at org.eclipse.swt.widgets.Tree.WM_LBUTTONDOWN(Tree.java:6428)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4801)
at org.eclipse.swt.widgets.Tree.windowProc(Tree.java:5960)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4757)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2303)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3532)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1170)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1059)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:667)
at org.eclipse.ui.internal.Workbench$$Lambda$14.0000000010ACA7B0.run(Unknown Source)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:597)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
at org.eclipse.mat.ui.rcp.Application.start(Application.java:26)
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:388)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:90)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
at java.lang.reflect.Method.invoke(Method.java:508)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:656)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:592)
at org.eclipse.equinox.launcher.Main.run(Main.java:1498)
at org.eclipse.equinox.launcher.Main.main(Main.java:1471)

Clicking on the line did show the object in the inspector.