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build i0206 (1700), win2k, j9sc20030205 I: - created Java project aaa - created Java project bbb - right-click properties on aaa and changed the Java Build Path to reference project bbb - hit ok - right-click properties on bbb and changed the Java Build Path to reference project aaa - hit ok Got a message saying that an error occurred and got the following in my log file. !ENTRY org.eclipse.jdt.ui 4 10001 Feb 07, 2003 17:24:53.959 !MESSAGE Internal Error !STACK 0 java.lang.reflect.InvocationTargetException: java.lang.NullPointerException at java.lang.Throwable.<init>(Throwable.java) at java.lang.Throwable.<init>(Throwable.java) at java.lang.NullPointerException.<init>(NullPointerException.java:63) at org.eclipse.jdt.internal.core.SetClasspathOperation$2.run(SetClasspat hOperation.java) at org.eclipse.jdt.internal.core.JavaModelOperation.runPostActions(JavaM odelOperation.java) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperati on.java) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java) at org.eclipse.jdt.internal.core.JavaElement.runOperation(JavaElement.ja va) at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject .java:2078) at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject .java:2042) at org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathsBlock.intern alConfigureJavaProject(BuildPathsBlock.java:653) at org.eclipse.jdt.internal.ui.wizards.buildpaths.BuildPathsBlock.config ureJavaProject(BuildPathsBlock.java:588) at org.eclipse.jdt.internal.ui.preferences.BuildPathsPropertyPage$1.run( BuildPathsPropertyPage.java:145) at org.eclipse.ui.actions.WorkspaceModifyDelegatingOperation.execute(Wor kspaceModifyDelegatingOperation.java:39) at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModify Operation.java:65) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOp eration.java:79) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalCont ext.java:296) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:246) at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDi alog.java:351) at org.eclipse.jdt.internal.ui.preferences.BuildPathsPropertyPage.perfor mOk(BuildPathsPropertyPage.java:153) at org.eclipse.jface.preference.PreferenceDialog.okPressed(PreferenceDia log.java:629) at org.eclipse.jface.preference.PreferenceDialog.buttonPressed(Preferenc eDialog.java:184) at org.eclipse.jface.dialogs.Dialog$1.widgetSelected(Dialog.java:417) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java) at org.eclipse.jface.window.Window.runEventLoop(Window.java) at org.eclipse.jface.window.Window.open(Window.java:541) at org.eclipse.ui.dialogs.PropertyDialogAction.run(PropertyDialogAction. java:158) at org.eclipse.jface.action.Action.runWithEvent(Action.java:804) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection (ActionContributionItem.java:450) at org.eclipse.jface.action.ActionContributionItem.handleWidgetEvent(Act ionContributionItem.java) at org.eclipse.jface.action.ActionContributionItem.access$0(ActionContri butionItem.java) at org.eclipse.jface.action.ActionContributionItem$ActionListener.handle Event(ActionContributionItem.java) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1289) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1272) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoa der.java:845) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461) at java.lang.reflect.AccessibleObject.invokeL(AccessibleObject.java:203) at java.lang.reflect.Method.invoke(Method.java:271) at org.eclipse.core.launcher.Main.basicRun(Main.java:247) at org.eclipse.core.launcher.Main.run(Main.java:703) at org.eclipse.core.launcher.Main.main(Main.java:539)
Increasing severity as this is easily reproducable. (not marking as critical since projects with cyclic build orders aren't common) On a side note, it looks like it prevents people from creating projects with cyclic dependancies so perhaps we can remove the new project build cycle support? :-)
Some cycles are working (we have regression tests for these), will investigate.
Cannot reproduce on jdk1.4.1_01. Could you give it a try on a different JRE ? If not reproduceable, then we should show your test case to j9 folks.
Works ok for me on IBM JRE 1.3.1 build cn131-20020403.
Closing as VM issue.
