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CreateCopyOfCompilationUnitChange.createChangeManager passed a negative offset to the constructor of ReplaceEdit. This is reproducible with one specific compilation unit (a modified AbstractTextEditor, no errors, no warnings): - start eclipse - click on AbstractTextEditor in Package Explorer - Ctrl-C, Ctrl-V - confirm suggested new name with Enter -> Error dialog box with undo/abort buttons: "An exception has been caught while processing the change 'Create file:/test/src/test4/CopyOfAbstractTextEditor'. Reason: Assertion failed: " - and nothing more apart from the description of the buttons. From the log: org.eclipse.jface.text.Assert$AssertionFailedException: Assertion failed: at org.eclipse.jface.text.Assert.isTrue(Assert.java:175) at org.eclipse.jface.text.Assert.isTrue(Assert.java:160) at org.eclipse.text.edits.TextEdit.<init>(TextEdit.java:137) at org.eclipse.text.edits.ReplaceEdit.<init>(ReplaceEdit.java:35) at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.createChangeManager(CreateCopyOfCompilationUnitChange.java:103) at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.getCopiedFileSource(CreateCopyOfCompilationUnitChange.java:81) at org.eclipse.jdt.internal.corext.refactoring.reorg.CreateCopyOfCompilationUnitChange.getOldFile(CreateCopyOfCompilationUnitChange.java:63) at org.eclipse.jdt.internal.corext.refactoring.nls.changes.CreateFileChange.perform(CreateFileChange.java:79) at org.eclipse.jdt.internal.corext.refactoring.CompositeChange.createUndoList(CompositeChange.java:122) at org.eclipse.jdt.internal.corext.refactoring.CompositeChange.perform(CompositeChange.java:149) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper$1.run(RefactoringExecutionHelper.java:80) at org.eclipse.jdt.internal.core.BatchOperation.executeOperation(BatchOperation.java:34) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:698) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1555) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1574) at org.eclipse.jdt.core.JavaCore.run(JavaCore.java:3129) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper$Operation.run(RefactoringExecutionHelper.java:78) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:302) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:252) at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:394) at org.eclipse.jdt.internal.ui.refactoring.RefactoringExecutionHelper.perform(RefactoringExecutionHelper.java:130) at org.eclipse.jdt.internal.ui.refactoring.reorg.ReorgCopyStarter.run(ReorgCopyStarter.java:70) at org.eclipse.jdt.internal.ui.refactoring.reorg.PasteAction$JavaElementAndResourcePaster.paste(PasteAction.java:402) at org.eclipse.jdt.internal.ui.refactoring.reorg.PasteAction.run(PasteAction.java:189) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:212) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:188) at org.eclipse.jface.action.Action.runWithEvent(Action.java:842) at org.eclipse.ui.actions.RetargetAction.runWithEvent(RetargetAction.java:212) at org.eclipse.ui.internal.commands.ActionHandler.execute(ActionHandler.java:40) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:390) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:763) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:803) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:486) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$0(WorkbenchKeyboard.java:421) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$1.handleEvent(WorkbenchKeyboard.java:215) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:692) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:846) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:871) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:856) at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1716) at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1712) at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3036) at org.eclipse.swt.widgets.Tree.WM_CHAR(Tree.java:1292) at org.eclipse.swt.widgets.Control.windowProc(Control.java:2939) at org.eclipse.swt.widgets.Display.windowProc(Display.java:2836) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1369) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1990) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1506) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1482) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:246) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:139) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:47) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:85) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:279) at org.eclipse.core.launcher.Main.run(Main.java:742) at org.eclipse.core.launcher.Main.main(Main.java:581)
The exception is thrown due to two inexact matches with erroneous start and end. Temporarily fixed in CreateCopyOfCompilationUnitChange by not considering inexact matches.
Fixed. Not considering inexact matches is in general a gooo idea for refactorings.
Verified in 200402120010
