NullPointerException on startup and compile

[DartBot]

This issue was originally filed by domi...@google.com

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Starting from command-line I get:

$ ./DartEditor.app/Contents/MacOS/DartEditor
!SESSION 2011-12-05 12:53:08.680 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_26
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments: -keyring /Users/dominich/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -consoleLog -data ../../../workspace -keyring /Users/dominich/.eclipse_keyring -showlocation

!ENTRY com.google.dart.tools.core 1 0 2011-12-05 12:53:14.656
!MESSAGE INFO: Exception caught while traversing an AST structure. Please report to the dartc team.
!STACK 0
java.lang.NullPointerException
    at java.io.File.<init>(File.java:305)
    at com.google.dart.tools.core.internal.util.ResourceUtil.getFile(ResourceUtil.java:49)
    at com.google.dart.tools.core.internal.util.ResourceUtil.getResources(ResourceUtil.java:113)
    at com.google.dart.tools.core.internal.model.DartLibraryImpl$1.visitImportDirective(DartLibraryImpl.java:566)
    at com.google.dart.tools.core.internal.model.DartLibraryImpl$1.visitImportDirective(DartLibraryImpl.java:1)
    at com.google.dart.compiler.ast.DartImportDirective.accept(DartImportDirective.java:49)
    at com.google.dart.compiler.ast.DartNodeTraverser.visit(DartNodeTraverser.java:413)
    at com.google.dart.compiler.ast.DartUnit.visitChildren(DartUnit.java:97)
    at com.google.dart.tools.core.dom.visitor.SafeDartNodeTraverser.visitChildren(SafeDartNodeTraverser.java:51)
    at com.google.dart.tools.core.dom.visitor.SafeDartNodeTraverser.visitNode(SafeDartNodeTraverser.java:39)
    at com.google.dart.compiler.ast.DartNodeTraverser.visitUnit(DartNodeTraverser.java:391)
    at com.google.dart.compiler.ast.DartUnit.accept(DartUnit.java:107)
    at com.google.dart.tools.core.internal.model.DartLibraryImpl.buildStructure(DartLibraryImpl.java:540)
    at com.google.dart.tools.core.internal.model.OpenableElementImpl.generateInfos(OpenableElementImpl.java:477)
    at com.google.dart.tools.core.internal.model.DartElementImpl.openWhenClosed(DartElementImpl.java:520)
    at com.google.dart.tools.core.internal.model.DartElementImpl.getElementInfo(DartElementImpl.java:298)
    at com.google.dart.tools.core.internal.model.DartElementImpl.getElementInfo(DartElementImpl.java:283)
    at com.google.dart.tools.core.internal.model.DartElementImpl.getChildren(DartElementImpl.java:237)
    at com.google.dart.tools.core.internal.model.DartModelManager.create(DartModelManager.java:427)
    at com.google.dart.tools.core.DartCore.create(DartCore.java:182)
    at com.google.dart.tools.ui.internal.text.editor.CompilationUnitDocumentProvider.createCompilationUnit(CompilationUnitDocumentProvider.java:1154)
    at com.google.dart.tools.ui.internal.text.editor.CompilationUnitDocumentProvider.createFileInfo(CompilationUnitDocumentProvider.java:1171)
    at org.eclipse.ui.editors.text.TextFileDocumentProvider.connect(TextFileDocumentProvider.java:478)
    at com.google.dart.tools.ui.internal.text.editor.CompilationUnitDocumentProvider.connect(CompilationUnitDocumentProvider.java:892)
    at org.eclipse.ui.texteditor.AbstractTextEditor.doSetInput(AbstractTextEditor.java:4213)
    at org.eclipse.ui.texteditor.StatusTextEditor.doSetInput(StatusTextEditor.java:237)
    at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.doSetInput(AbstractDecoratedTextEditor.java:1451)
    at com.google.dart.tools.ui.internal.text.editor.DartEditor.internalDoSetInput(DartEditor.java:3882)
    at com.google.dart.tools.ui.internal.text.editor.DartEditor.doSetInput(DartEditor.java:2711)
    at com.google.dart.tools.ui.internal.text.editor.CompilationUnitEditor.doSetInput(CompilationUnitEditor.java:1517)
    at org.eclipse.ui.texteditor.AbstractTextEditor$19.run(AbstractTextEditor.java:3200)
    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:2642)
    at org.eclipse.ui.texteditor.AbstractTextEditor.internalInit(AbstractTextEditor.java:3218)
    at org.eclipse.ui.texteditor.AbstractTextEditor.init(AbstractTextEditor.java:3245)
    at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:828)
    at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:647)
    at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:465)
    at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
    at org.eclipse.ui.internal.EditorAreaHelper.setVisibleEditor(EditorAreaHelper.java:271)
    at org.eclipse.ui.internal.EditorManager.setVisibleEditor(EditorManager.java:1459)
    at org.eclipse.ui.internal.EditorManager$5.runWithException(EditorManager.java:972)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3935)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3612)
    at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
    at org.eclipse.ui.internal.Workbench$33.runWithException(Workbench.java:1595)
    at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:135)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3935)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3612)
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494)
    at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
    at com.google.dart.tools.deploy.DartIDEApplication.start(DartIDEApplication.java:44)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    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:344)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
    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:597)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

After this, any attempt to recompile gets:

!ENTRY com.google.dart.tools.core 1 0 2011-12-05 12:54:53.179
!MESSAGE INFO: Exception caught while building file:/Users/dominich/devel/dart/flightTest/flightTest.dart
!STACK 0
java.lang.NullPointerException
    at java.io.File.<init>(File.java:305)
    at com.google.dart.tools.core.internal.util.ResourceUtil.getFile(ResourceUtil.java:49)
    at com.google.dart.tools.core.internal.util.ResourceUtil.getResource(ResourceUtil.java:76)
    at com.google.dart.tools.core.internal.builder.CompilerListener.getResource(CompilerListener.java:119)
    at com.google.dart.tools.core.internal.builder.CompilerListener.processError(CompilerListener.java:161)
    at com.google.dart.tools.core.internal.builder.CompilerListener.onError(CompilerListener.java:77)
    at com.google.dart.compiler.DartCompilerMainContext.onError(DartCompilerMainContext.java:62)
    at com.google.dart.compiler.DartCompilerMainContext.getLibraryUnit(DartCompilerMainContext.java:126)
    at com.google.dart.compiler.DartCompiler$Compiler.updateLibraries(DartCompiler.java:343)
    at com.google.dart.compiler.DartCompiler$Compiler.updateLibraries(DartCompiler.java:366)
    at com.google.dart.compiler.DartCompiler$Compiler.updateAndResolve(DartCompiler.java:202)
    at com.google.dart.compiler.DartCompiler$Compiler.compile(DartCompiler.java:169)
    at com.google.dart.compiler.DartCompiler$Compiler.access$3(DartCompiler.java:166)
    at com.google.dart.compiler.DartCompiler.compileLib(DartCompiler.java:1129)
    at com.google.dart.compiler.DartCompiler.compileLib(DartCompiler.java:1105)
    at com.google.dart.tools.core.utilities.compiler.DartCompilerUtilities.secureCompileLib(DartCompilerUtilities.java:737)
    at com.google.dart.tools.core.internal.builder.DartBuilder.buildLibrary(DartBuilder.java:356)
    at com.google.dart.tools.core.internal.builder.DartBuilder.buildAllApplications(DartBuilder.java:275)
    at com.google.dart.tools.core.internal.builder.DartBuilder.build(DartBuilder.java:249)
    at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
    at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
    at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
    at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
    at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
    at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
    at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
    at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

[DartBot]

This comment was originally written by drfibonacci@google.com

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Added Area-Editor, OpSys-OSX, Triaged labels.

[bwilkerson]

Set owner to @bwilkerson.
Added Accepted label.

[bwilkerson]

Are there any known steps that will reproduce the problem?

I have checked in a change (http://codereview.chromium.org/8771050/) that will at the very least capture more information to help us track down the cause of this issue, but I don't currently have the ability to reproduce the exception.

[bwilkerson]

Added AssumedStale label.