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1. Add a working set 2. Search for something in that working set 3. Remove the working set 4. Search via context menu ==> Log: Mon Dec 17 17:23:54 GMT+01:00 2001 4 org.eclipse.ui 0 java.util.ConcurrentModificationException java.util.ConcurrentModificationException at java.util.AbstractList$Itr.checkForComodification(AbstractList.java(Compiled Code)) at java.util.AbstractList$Itr.next(AbstractList.java(Compiled Code)) at org.eclipse.jdt.internal.ui.search.LRUWorkingSetList.removeDeletedWorkingSets(LRUWorkingSetList.java:51) at org.eclipse.jdt.internal.ui.search.LRUWorkingSetList.sortedIterator(LRUWorkingSetList.java:42) at org.eclipse.jdt.internal.ui.search.ReadReferencesSearchGroup.getActions(ReadReferencesSearchGroup.java:25) at org.eclipse.jdt.internal.ui.search.JavaSearchSubGroup.fill(JavaSearchSubGroup.java:30) at org.eclipse.jdt.internal.ui.search.JavaSearchGroup.fill(JavaSearchGroup.java:51) at org.eclipse.jdt.internal.ui.actions.ContextMenuGroup.add(ContextMenuGroup.java:25) at org.eclipse.jdt.internal.ui.packageview.PackageExplorerPart.menuAboutToShow(PackageExplorerPart.java:498) at org.eclipse.jface.action.MenuManager.fireAboutToShow(MenuManager.java:220) at org.eclipse.jface.action.MenuManager.handleAboutToShow(MenuManager.java:253) at org.eclipse.jface.action.MenuManager.access$0(MenuManager.java:250) at org.eclipse.jface.action.MenuManager$1.menuShown(MenuManager.java:280) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java(Compiled Code)) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java(Compiled Code)) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java(Compiled Code)) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java(Compiled Code)) at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:2915) at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code)) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java(Compiled Code)) at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code)) at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method) at org.eclipse.swt.widgets.Menu.setVisible(Menu.java:777) at org.eclipse.swt.widgets.Control.WM_CONTEXTMENU(Control.java:2740) at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code)) at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code)) at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method) at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java(Compiled Code)) at org.eclipse.swt.widgets.Tree.callWindowProc(Tree.java(Compiled Code)) at org.eclipse.swt.widgets.Control.WM_RBUTTONUP(Control.java:3590) at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code)) at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code)) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java(Compiled Code)) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java(Compiled Code)) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java(Compiled Code)) at org.eclipse.ui.internal.Workbench.run(Workbench.java:758) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:820) 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)
The LRU working set list was modified while iterating over it. Fixed. Available in builds > 20011217