Description Markus Keller 2011-03-08 07:01:52 EST

Created attachment 190645 [details]
a.zip

I20110307-2110

Not a fully deterministic problem, but I could often reproduce with these steps:
- new workspace
- import attached projects (they save encodings of derived resources separately)
- open type p.C in Java editor
- repeat cleaning the workspace and restarting the workbench until the exceptions are written to the log

!ENTRY org.eclipse.core.resources 4 4 2011-03-08 12:48:07.559
!MESSAGE Exception occurred while setting derived flag for project derived preferences: /org.eclipse.core.expressions/.settings/org.eclipse.core.resou
rces.derived.prefs.
!STACK 1
org.eclipse.core.internal.resources.ResourceException: The resource tree is locked for modifications.
        at org.eclipse.core.internal.resources.WorkManager.checkIn(WorkManager.java:116)
        at org.eclipse.core.internal.resources.Workspace.prepareOperation(Workspace.java:2248)
        at org.eclipse.core.internal.resources.Resource.setDerived(Resource.java:1743)
        at org.eclipse.core.internal.resources.ProjectPreferences$1.run(ProjectPreferences.java:389)
        at org.eclipse.core.internal.resources.ProjectPreferences.flush(ProjectPreferences.java:395)
        at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:310)
        at org.eclipse.core.internal.preferences.EclipsePreferences.getChild(EclipsePreferences.java:413)
        at org.eclipse.core.internal.preferences.EclipsePreferences.internalNode(EclipsePreferences.java:542)
        at org.eclipse.core.internal.preferences.EclipsePreferences.node(EclipsePreferences.java:670)
        at org.eclipse.core.internal.resources.CharsetManager.getPreferences(CharsetManager.java:315)
        at org.eclipse.core.internal.resources.CharsetManager$ResourceChangeListener.processEntryChanges(CharsetManager.java:161)
        at org.eclipse.core.internal.resources.CharsetManager$ResourceChangeListener.resourceChanged(CharsetManager.java:235)
        at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
        at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
        at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
        at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
        at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
        at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1496)
        at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:45)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
!SUBENTRY 1 org.eclipse.core.resources 4 380 2011-03-08 12:48:07.571
!MESSAGE The resource tree is locked for modifications.

!ENTRY org.eclipse.equinox.preferences 4 4 2011-03-08 12:48:07.608
!MESSAGE Exception loading preferences from: C:/e/i/I20110307-2110/a/org.eclipse.core.expressions/.settings/org.eclipse.core.resources.derived.prefs.
!STACK 0
org.osgi.service.prefs.BackingStoreException: Exception occurred while setting derived flag for project derived preferences: /org.eclipse.core.express
ions/.settings/org.eclipse.core.resources.derived.prefs.
        at org.eclipse.core.internal.resources.ProjectPreferences.flush(ProjectPreferences.java:403)
        at org.eclipse.core.internal.preferences.EclipsePreferences.create(EclipsePreferences.java:310)
        at org.eclipse.core.internal.preferences.EclipsePreferences.getChild(EclipsePreferences.java:413)
        at org.eclipse.core.internal.preferences.EclipsePreferences.internalNode(EclipsePreferences.java:542)
        at org.eclipse.core.internal.preferences.EclipsePreferences.node(EclipsePreferences.java:670)
        at org.eclipse.core.internal.resources.CharsetManager.getPreferences(CharsetManager.java:315)
        at org.eclipse.core.internal.resources.CharsetManager$ResourceChangeListener.processEntryChanges(CharsetManager.java:161)
        at org.eclipse.core.internal.resources.CharsetManager$ResourceChangeListener.resourceChanged(CharsetManager.java:235)
        at org.eclipse.core.internal.events.NotificationManager$1.run(NotificationManager.java:291)
        at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
        at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
        at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
        at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:395)
        at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1496)
        at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:45)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)