Migrated from http://lampsvn.epfl.ch/trac/scala/ticket/3255
Reporter willem
I do not know how to reproduce this one, but I think the stack trace would help.
At some point I pressed Ctl-S to save; and a "Save Failed" dialog popped up. Here is the stack trace
java.lang.NullPointerException at scala.tools.nsc.symtab.Types$Type.findMember(Types.scala:824)
at scala.tools.nsc.symtab.Types$Type.nonPrivateMembers(Types.scala:444)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$class.conflictsIn$1(ScalaStructureBuilder.scala:72)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$$anonfun$shouldForward$1$1.apply(ScalaStructureBuilder.scala:95)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$$anonfun$shouldForward$1$1.apply(ScalaStructureBuilder.scala:97)
at scala.tools.nsc.symtab.SymbolTable.atPhase(SymbolTable.scala:99)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$class.shouldForward$1(ScalaStructureBuilder.scala:87)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$$anonfun$addForwarders$1$1.apply(ScalaStructureBuilder.scala:102)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$$anonfun$addForwarders$1$1.apply(ScalaStructureBuilder.scala:102)
at scala.collection.TraversableLike$WithFilter$$anonfun$foreach$1.apply(TraversableLike.scala:1232)
at scala.collection.LinearSeqLike$class.foreach(LinearSeqLike.scala:97)
at scala.collection.immutable.List.foreach(List.scala:46)
at scala.collection.TraversableLike$WithFilter.foreach(TraversableLike.scala:1231)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$class.addForwarders$1(ScalaStructureBuilder.scala:102)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$$anonfun$complete$1.apply(ScalaStructureBuilder.scala:168)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$$anonfun$complete$1.apply(ScalaStructureBuilder.scala:163)
at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:62)
at scala.collection.mutable.HashMap$$anonfun$foreach$1.apply(HashMap.scala:62)
at scala.collection.Iterator$class.foreach(Iterator.scala:582)
at scala.collection.mutable.HashTable$$anon$1.foreach(HashTable.scala:160)
at scala.collection.mutable.HashTable$class.foreachEntry(HashTable.scala:193)
at scala.collection.mutable.HashMap.foreachEntry(HashMap.scala:21)
at scala.collection.mutable.HashMap.foreach(HashMap.scala:62)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Owner$class.complete(ScalaStructureBuilder.scala:163)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser$Builder.complete(ScalaStructureBuilder.scala:723)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser.atBuilder(ScalaStructureBuilder.scala:833)
at scala.tools.eclipse.javaelements.ScalaStructureBuilder$StructureBuilderTraverser.traverse(ScalaStructureBuilder.scala:759)
at scala.tools.eclipse.javaelements.ScalaCompilationUnit$$anonfun$buildStructure$1.apply(ScalaCompilationUnit.scala:87)
at scala.tools.eclipse.javaelements.ScalaCompilationUnit$$anonfun$buildStructure$1.apply(ScalaCompilationUnit.scala:78)
at scala.tools.eclipse.util.Cached$$anonfun$apply$3.apply(Cached.scala:58)
at scala.tools.eclipse.util.Cached$class.locked(Cached.scala:83)
at scala.tools.eclipse.util.Cached$class.apply(Cached.scala:56)
at scala.tools.eclipse.ScalaPresentationCompiler$CachedCompilerResult.apply(ScalaPresentationCompiler.scala:67)
at scala.tools.eclipse.ScalaPresentationCompiler.withCompilerResult(ScalaPresentationCompiler.scala:90)
at scala.tools.eclipse.ScalaProject$$anonfun$withCompilerResult$1.apply(ScalaProject.scala:374)
at scala.tools.eclipse.ScalaProject$$anonfun$withCompilerResult$1.apply(ScalaProject.scala:373)
at scala.tools.eclipse.util.Cached$$anonfun$apply$1.apply(Cached.scala:22)
at scala.tools.eclipse.util.Cached$$anonfun$apply$1.apply(Cached.scala:21)
at scala.tools.eclipse.util.Cached$class.locked(Cached.scala:83)
at scala.tools.eclipse.util.Cached$class.apply(Cached.scala:20)
at scala.tools.eclipse.ScalaProject$$anon$1.apply(ScalaProject.scala:38)
at scala.tools.eclipse.ScalaProject.withPresentationCompiler(ScalaProject.scala:369)
at scala.tools.eclipse.ScalaProject.withCompilerResult(ScalaProject.scala:373)
at scala.tools.eclipse.javaelements.ScalaCompilationUnit$class.withCompilerResult(ScalaCompilationUnit.scala:37)
at scala.tools.eclipse.javaelements.ScalaSourceFile.withCompilerResult(ScalaSourceFile.scala:40)
at scala.tools.eclipse.javaelements.ScalaCompilationUnit$class.buildStructure(ScalaCompilationUnit.scala:78)
at scala.tools.eclipse.javaelements.ScalaSourceFile.buildStructure(ScalaSourceFile.scala:40)
at org.eclipse.jdt.internal.core.Openable.generateInfos(Openable.java:258)
at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(JavaElement.java:515)
at scala.tools.eclipse.javaelements.ScalaSourceFile.makeConsistent(ScalaSourceFile.scala:65)
at org.eclipse.jdt.internal.core.CompilationUnit.makeConsistent(CompilationUnit.java:1062)
at org.eclipse.jdt.internal.core.CommitWorkingCopyOperation.executeOperation(CommitWorkingCopyOperation.java:124)
at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:728)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:793)
at org.eclipse.jdt.internal.core.CompilationUnit.commitWorkingCopy(CompilationUnit.java:389)
at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider.commitWorkingCopy(CompilationUnitDocumentProvider.java:1330)
at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider$4.execute(CompilationUnitDocumentProvider.java:1401)
at org.eclipse.ui.editors.text.TextFileDocumentProvider$DocumentProviderOperation.run(TextFileDocumentProvider.java:132)
at org.eclipse.ui.actions.WorkspaceModifyDelegatingOperation.execute(WorkspaceModifyDelegatingOperation.java:69)
at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModifyOperation.java:106)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:75)
at org.eclipse.ui.internal.editors.text.WorkspaceOperationRunner.run(WorkspaceOperationRunner.java:65)
at org.eclipse.ui.editors.text.TextFileDocumentProvider.executeOperation(TextFileDocumentProvider.java:456)
at org.eclipse.ui.editors.text.TextFileDocumentProvider.saveDocument(TextFileDocumentProvider.java:772)
at org.eclipse.ui.texteditor.AbstractTextEditor.performSave(AbstractTextEditor.java:4945)
at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.performSave(CompilationUnitEditor.java:1230)
at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.doSave(CompilationUnitEditor.java:1283)
at scala.tools.eclipse.ScalaSourceFileEditor.doSave(ScalaSourceFileEditor.scala:56)
at org.eclipse.ui.texteditor.AbstractTextEditor$TextEditorSavable.doSave(AbstractTextEditor.java:7066)
at org.eclipse.ui.Saveable.doSave(Saveable.java:214)
at org.eclipse.ui.internal.SaveableHelper.doSaveModel(SaveableHelper.java:346)
at org.eclipse.ui.internal.SaveableHelper$3.run(SaveableHelper.java:193)
at org.eclipse.ui.internal.SaveableHelper$5.run(SaveableHelper.java:274)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:464)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:372)
at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:759)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:756)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2579)
at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(SaveableHelper.java:282)
at org.eclipse.ui.internal.SaveableHelper.runProgressMonitorOperation(SaveableHelper.java:261)
at org.eclipse.ui.internal.SaveableHelper.saveModels(SaveableHelper.java:204)
at org.eclipse.ui.internal.SaveableHelper.savePart(SaveableHelper.java:144)
at org.eclipse.ui.internal.EditorManager.savePart(EditorManager.java:1357)
at org.eclipse.ui.internal.WorkbenchPage.savePart(WorkbenchPage.java:3328)
at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPage.java:3341)
at org.eclipse.ui.internal.SaveAction.run(SaveAction.java:76)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:185)
at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:109)
at org.eclipse.core.commands.Command.executeWithChecks(Command.java:476)
at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
at org.eclipse.ui.internal.handlers.HandlerService.executeCommand(HandlerService.java:169)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:470)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:824)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:880)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:569)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:510)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:125)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1191)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1002)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1027)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1012)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1040)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1036)
at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1368)
at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4053)
at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:346)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:3946)
at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:342)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4589)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2410)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3471)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)