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Error Internal compiler error java.lang.ClassCastException: org.eclipse.jdt.internal.compiler.ast.FieldReference at org.eclipse.jdt.internal.compiler.flow.LoopingFlowContext.complainOnFinalAssignmentsInLoop(LoopingFlowContext.java:58) at org.eclipse.jdt.internal.compiler.ast.ForStatement.analyseCode(ForStatement.java:138) at org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration.analyseCode(ConstructorDeclaration.java:94) at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.analyseCode(TypeDeclaration.java:415) at org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.analyseCode(CompilationUnitDeclaration.java:76) at org.eclipse.jdt.internal.compiler.Compiler.process(Compiler.java:540) at org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:337) at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:194) at org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:144) at org.eclipse.jdt.internal.core.builder.IncrementalImageBuilder.build(IncrementalImageBuilder.java:106) at org.eclipse.jdt.internal.core.builder.JavaBuilder.buildDeltas(JavaBuilder.java:190) at org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:118) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:384) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:852) at org.eclipse.core.runtime.Platform.run(Platform.java:413) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:120) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:176) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:186) at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:146) at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:852) at org.eclipse.core.runtime.Platform.run(Platform.java:413) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:160) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:211) at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:861) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1569) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:79) at org.eclipse.ui.texteditor.AbstractTextEditor.performSaveOperation(AbstractTextEditor.java:2790) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.performSaveOperation(CompilationUnitEditor.java:849) at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.doSave(CompilationUnitEditor.java:913) at org.eclipse.ui.internal.EditorManager$11.run(EditorManager.java:1032) at org.eclipse.ui.internal.EditorManager$8.run(EditorManager.java:901) at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:296) at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:246) at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:432) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:65) at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:429) at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:1174) at org.eclipse.ui.internal.EditorManager.runProgressMonitorOperation(EditorManager.java:907) at org.eclipse.ui.internal.EditorManager.saveEditor(EditorManager.java:1037) at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPage.java:2143) at org.eclipse.ui.internal.SaveAction.run(SaveAction.java:30) at org.eclipse.jface.action.Action.runWithEvent(Action.java:769) at org.eclipse.ui.internal.WWinKeyBindingService.invoke(WWinKeyBindingService.java:139) at org.eclipse.ui.internal.WWinKeyBindingService.pressed(WWinKeyBindingService.java:120) at org.eclipse.ui.internal.WWinKeyBindingService$6.widgetSelected(WWinKeyBindingService.java:376) at org.eclipse.ui.internal.AcceleratorMenu$2.handleEvent(AcceleratorMenu.java:55) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:825) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1692) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1410) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1446) at org.eclipse.ui.internal.Workbench.run(Workbench.java:1429) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:845) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:462) 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:247) at org.eclipse.core.launcher.Main.run(Main.java:703) at org.eclipse.core.launcher.Main.main(Main.java:539) Test.java test line 0 Can be easily reproduced with: public class Test { private final int testVal; public Test() { for (int i = 0; i < 10; i++) { this.testVal = i; } } }
Removed offending cast which wasn't necessary anymore. Thanks for the test case. Fixed.
Verified.