[ https://issues.jboss.org/browse/JBIDE-26158?page=com.atlassian.jira.plugi... ] Andre Dietisheim edited comment on JBIDE-26158 at 7/2/18 5:12 PM: ------------------------------------------------------------------ The NPE occurs at the following code in the eclipse platform: {code:title=org.eclipse.core.internal.resources.CheckMissingNaturesListener#updateRange} FileUtil.transferStreams(input, output, file.getLocation().toString(), new NullProgressMonitor()); {code} The culprit is {code} file.getLocation() {code} The file (<project-nam>.project) has no location, but the project for it is accessible. The file that's being used (*L/nodejs-ex (1)/.project*) is a project that the chromium tooling created behind the scenes. It is not visible in the project explorer but it is in the navigator (decorated with a chrome tools icon): !image-2018-07-02-22-49-45-246.png! This latter project is created and opened by the chromium tools in {code:title=org.eclipse.wst.jsdt.chromium.debug.core.util.ChromiumDebugPluginUtil#createEmptyProject} try { project.create(description, null); project.open(null); return project; } catch (CoreException e) { ChromiumDebugPlugin.log(e); return null; } {code} *project.open(null)* causes the *CheckMissingNaturesListener* to check for the missing natures. {code} CheckMissingNaturesListener$3(InternalWorkspaceJob).<init>(String) line: 27 CheckMissingNaturesListener$3(WorkspaceJob).<init>(String) line: 63 CheckMissingNaturesListener$3.<init>(CheckMissingNaturesListener, String, Set, IProject, Set) line: 163 CheckMissingNaturesListener.updateMarkers(Collection<IProject>) line: 163 CheckMissingNaturesListener.resourceChanged(IResourceChangeEvent) line: 46 NotificationManager$1.run() line: 297 SafeRunner.run(ISafeRunnable) line: 42 NotificationManager.notify(ResourceChangeListenerList$ListenerEntry[], ResourceChangeEvent, boolean) line: 287 NotificationManager.broadcastChanges(ElementTree, ResourceChangeEvent, boolean) line: 150 Workspace.broadcastPostChange() line: 376 Workspace.endOperation(ISchedulingRule, boolean) line: 1499 Project.open(int, IProgressMonitor) line: 1098 Project.open(IProgressMonitor) line: 1107 ChromiumDebugPluginUtil.createEmptyProject(String) line: 143 VProjectWorkspaceBridge.<init>(String, ConnectedTargetData, JavascriptVm) line: 101 VProjectWorkspaceBridge$FactoryImpl.attachedToVm(ConnectedTargetData, JavascriptVm) line: 78 ConnectedTargetData.initWorkspaceRelations() line: 222 ConnectedTargetData.setVmEmbedder(JavascriptVmEmbedder) line: 85 DebugTargetImpl.attach(DebugTargetImpl, JavascriptVmEmbedder$ConnectionToRemote, DestructingGuard, Runnable, IProgressMonitor) line: 86 StandaloneV8LaunchType(LaunchTypeBase).launch(ILaunchConfiguration, String, ILaunch, IProgressMonitor) line: 101 LaunchConfigurationWorkingCopy(LaunchConfiguration).launch(String, IProgressMonitor, boolean, boolean) line: 859 LaunchConfigurationWorkingCopy(LaunchConfiguration).launch(String, IProgressMonitor, boolean) line: 717 DebugUIPlugin.buildAndLaunch(ILaunchConfiguration, String, IProgressMonitor) line: 1039 DebugUIPlugin$8.run(IProgressMonitor) line: 1256 Worker.run() line: 60 {code} was (Author: adietish): The NPE occurs at the following code in the eclipse platform: {code:title=org.eclipse.core.internal.resources.CheckMissingNaturesListener#updateRange} FileUtil.transferStreams(input, output, file.getLocation().toString(), new NullProgressMonitor()); {code} The culprit is {code} file.getLocation() {code} The file that's being used (*L/nodejs-ex (1)/.project*) is a project that the chromium tooling created behind the scenes. It is not visible in the project explorer but it is in the navigator (decorated with a chrome tools icon): !image-2018-07-02-22-49-45-246.png! This latter project is created and opened by the chromium tools in {code:title=org.eclipse.wst.jsdt.chromium.debug.core.util.ChromiumDebugPluginUtil#createEmptyProject} try { project.create(description, null); project.open(null); return project; } catch (CoreException e) { ChromiumDebugPlugin.log(e); return null; } {code} *project.open(null)* causes the *CheckMissingNaturesListener* to check for the missing natures. {code} CheckMissingNaturesListener$3(InternalWorkspaceJob).<init>(String) line: 27 CheckMissingNaturesListener$3(WorkspaceJob).<init>(String) line: 63 CheckMissingNaturesListener$3.<init>(CheckMissingNaturesListener, String, Set, IProject, Set) line: 163 CheckMissingNaturesListener.updateMarkers(Collection<IProject>) line: 163 CheckMissingNaturesListener.resourceChanged(IResourceChangeEvent) line: 46 NotificationManager$1.run() line: 297 SafeRunner.run(ISafeRunnable) line: 42 NotificationManager.notify(ResourceChangeListenerList$ListenerEntry[], ResourceChangeEvent, boolean) line: 287 NotificationManager.broadcastChanges(ElementTree, ResourceChangeEvent, boolean) line: 150 Workspace.broadcastPostChange() line: 376 Workspace.endOperation(ISchedulingRule, boolean) line: 1499 Project.open(int, IProgressMonitor) line: 1098 Project.open(IProgressMonitor) line: 1107 ChromiumDebugPluginUtil.createEmptyProject(String) line: 143 VProjectWorkspaceBridge.<init>(String, ConnectedTargetData, JavascriptVm) line: 101 VProjectWorkspaceBridge$FactoryImpl.attachedToVm(ConnectedTargetData, JavascriptVm) line: 78 ConnectedTargetData.initWorkspaceRelations() line: 222 ConnectedTargetData.setVmEmbedder(JavascriptVmEmbedder) line: 85 DebugTargetImpl.attach(DebugTargetImpl, JavascriptVmEmbedder$ConnectionToRemote, DestructingGuard, Runnable, IProgressMonitor) line: 86 StandaloneV8LaunchType(LaunchTypeBase).launch(ILaunchConfiguration, String, ILaunch, IProgressMonitor) line: 101 LaunchConfigurationWorkingCopy(LaunchConfiguration).launch(String, IProgressMonitor, boolean, boolean) line: 859 LaunchConfigurationWorkingCopy(LaunchConfiguration).launch(String, IProgressMonitor, boolean) line: 717 DebugUIPlugin.buildAndLaunch(ILaunchConfiguration, String, IProgressMonitor) line: 1039 DebugUIPlugin$8.run(IProgressMonitor) line: 1256 Worker.run() line: 60 {code} The project file (.project has no location, but the project for it is accessible) -- This message was sent by Atlassian JIRA (v7.5.0#75005)