Description Andrew Johnson 2019-09-23 03:24:02 EDT

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.