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Bug 7760

Summary:	Walkback in target when inspecting variable
Product:	[Eclipse Project] JDT	Reporter:	Peter Burka <peter_burka>
Component:	Debug	Assignee:	Darin Wright <darin.eclipse>
Status:	RESOLVED DUPLICATE	QA Contact:
Severity:	normal
Priority:	P3
Version:	2.0
Target Milestone:	---
Hardware:	PC
OS:	Windows NT
Whiteboard:
Bug Depends on:	1564
Bug Blocks:

Description Peter Burka

2002-01-16 11:24:40 EST

I was debugging a new Eclipse editor.  I selected a variable in the text view 
of the debugger and selected 'Inspect' from the context menu.  The following 
walkback occurred in the debug target:

java.lang.ClassNotFoundException: org.eclipse.ui.part.CodeSnippet_1
	at org.eclipse.core.internal.boot.DelegatingURLClassLoader.loadClass
(DelegatingURLClassLoader.java:755)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:257)
	at java.lang.Class.forName1(Native Method)
	at java.lang.Class.forName(Class.java:134)
	at org.eclipse.ui.part.MultiPageSelectionProvider.getSelection
(MultiPageSelectionProvider.java:75)
	at org.eclipse.ui.views.tasklist.TaskList.partActivated
(TaskList.java:630)
	at org.eclipse.ui.views.tasklist.TaskList$1.partActivated
(TaskList.java:134)
	at org.eclipse.ui.internal.PartListenerList$1.run
(PartListenerList.java:37)
	at org.eclipse.core.internal.runtime.InternalPlatform.run
(InternalPlatform.java:821)
	at org.eclipse.core.runtime.Platform.run(Platform.java:395)
	at org.eclipse.ui.internal.PartListenerList.firePartActivated
(PartListenerList.java:35)
	at org.eclipse.ui.internal.WorkbenchPage.firePartActivated
(WorkbenchPage.java:637)
	at org.eclipse.ui.internal.WorkbenchPage.setActivePart
(WorkbenchPage.java:1427)
	at org.eclipse.ui.internal.WorkbenchPage.requestActivation
(WorkbenchPage.java:1231)
	at org.eclipse.ui.internal.PartPane.requestActivation(PartPane.java:222)
	at org.eclipse.ui.internal.EditorPane.requestActivation
(EditorPane.java:112)
	at org.eclipse.ui.internal.PartPane.handleEvent(PartPane.java:181)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:74)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:839)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:825)
	at org.eclipse.swt.widgets.Shell.setActiveControl(Shell.java:689)
	at org.eclipse.swt.widgets.Shell.WM_MOUSEACTIVATE(Shell.java:979)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2627)
	at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1116)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1155)
	at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:71)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2662)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1155)
	at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:71)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2662)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1155)
	at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:71)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2662)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1155)
	at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:71)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2662)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1155)
	at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:71)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2662)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java:1155)
	at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java:71)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:2662)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:1794)
	at org.eclipse.swt.internal.win32.OS.PeekMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.PeekMessage(OS.java:1519)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1195)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:815)
	at org.eclipse.ui.internal.Workbench.run(Workbench.java:798)
	at org.eclipse.core.internal.boot.InternalBootLoader.run
(InternalBootLoader.java:821)
	at org.eclipse.core.boot.BootLoader.run(BootLoader.java:285)
	at java.lang.reflect.Method.invoke(Native Method)
	at org.eclipse.core.launcher.Main.basicRun(Main.java:151)
	at org.eclipse.core.launcher.Main.run(Main.java:502)
	at org.eclipse.core.launcher.UIMain.main(UIMain.java:52)

Comment 1 Darin Wright

2002-01-16 11:30:42 EST

Require some more details:

* Eclispe version
* The stack frame you were in (source/binary/system package, etc)
* the exrepssion evaluated

Comment 2 Peter Burka

2002-01-16 11:39:40 EST

Eclipse version: 20011219
Stack frame I was in: 
org.eclipse.ui.part.MultiPageSelectionProvider.getSelection
Target VM: HDK 1.3
Selection: 'activeEditor', a temporary variable

The debugger had stopped because of a NullPointerException breakpoint.

MultiPageSelectionProvider was not loaded in my workspace, but its source was 
displayed in the debugger.

Comment 3 Darin Wright

2002-01-16 12:17:49 EST

Known problem. The current evaluation technology, when self-hosting, only works 
for projects that are "source projects"  (as opposed to imported binary 
projects). The reason for this is that the Eclipse class loader is unable to 
see the "temp eval file" we deploy to do the evaluation.

Comment 4 Darin Wright

2002-01-24 15:54:38 EST


*** This bug has been marked as a duplicate of 1546 ***