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Build Identifier: Eclipse 3.6.1 The following NPE was thrown during debug. The problem can't be reproduced at will. It looks that Display.getCurrent() returns null. java.lang.NullPointerException at org.eclipse.jface.resource.JFaceResources.getResources(JFaceResources.java:207) at org.eclipse.jface.resource.ImageRegistry.<init>(ImageRegistry.java:152) at org.eclipse.jface.resource.ImageRegistry.<init>(ImageRegistry.java:124) at com.ibm.debug.pdt.internal.common.CommonUtils.initializeImageRegistry(CommonUtils.java:149) at com.ibm.debug.pdt.internal.common.CommonUtils.getImage(CommonUtils.java:181) at com.ibm.debug.pdt.common.DebugImageDescriptor.addOverlays(DebugImageDescriptor.java:81) at com.ibm.debug.pdt.common.DebugImageDescriptor.drawCompositeImage(DebugImageDescriptor.java:59) at org.eclipse.jface.resource.CompositeImageDescriptor.getImageData(CompositeImageDescriptor.java:154) at org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:273) at org.eclipse.jface.resource.ImageDescriptor.createResource(ImageDescriptor.java:165) at org.eclipse.jface.resource.DeviceResourceManager.allocate(DeviceResourceManager.java:56) at org.eclipse.jface.resource.AbstractResourceManager.create(AbstractResourceManager.java:88) at org.eclipse.jface.resource.ResourceManager.createImageWithDefault(ResourceManager.java:192) at org.eclipse.jface.resource.ImageRegistry.get(ImageRegistry.java:212) at com.ibm.debug.pdt.internal.ui.PICLUtils.getImage(PICLUtils.java:374) at com.ibm.debug.pdt.internal.ui.PDTModelPresentation.getImage(PDTModelPresentation.java:198) at org.eclipse.debug.internal.ui.LazyModelPresentation.getImage(LazyModelPresentation.java:127) at org.eclipse.debug.internal.ui.DelegatingModelPresentation.getImage(DelegatingModelPresentation.java:143) at org.eclipse.debug.internal.ui.views.launch.DebugElementHelper.getImageDescriptor(DebugElementHelper.java:70) at org.eclipse.debug.internal.ui.model.elements.DebugElementLabelProvider.getImageDescriptor(DebugElementLabelProvider.java:72) at org.eclipse.debug.internal.ui.model.elements.ElementLabelProvider.getImageDescriptor(ElementLabelProvider.java:289) at org.eclipse.debug.internal.ui.model.elements.BreakpointLabelProvider.getImageDescriptor(BreakpointLabelProvider.java:43) at org.eclipse.debug.internal.ui.model.elements.ElementLabelProvider.retrieveLabel(ElementLabelProvider.java:216) at org.eclipse.debug.internal.ui.model.elements.ElementLabelProvider$LabelUpdater.run(ElementLabelProvider.java:160) at org.eclipse.debug.internal.ui.model.elements.ElementLabelProvider$LabelJob.run(ElementLabelProvider.java:74) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54) Reproducible: Couldn't Reproduce
(In reply to comment #0) > The following NPE was thrown during debug. The problem can't be reproduced at > will. It looks that Display.getCurrent() returns null. Since the trace shows that the code is being run from a job, having the current display be 'null' is not surprising. I would suggest trying to get the display from the workbench instead (PlatformUI.getWorkbench().getDisplay()) instead of using the no-argument ImageRegistry constructor. Debug, do you agree?
Note that if your debug mode presentation requires the UI thread for generating labels/images then it should implement org.eclipse.debug.ui.IDebugModelPresentationExtension. Otherwise a non-UI thread is used to generate labels. For example, the JDT model presentation builds a cache of images, and requires the UI thread until the cache is initialized.
The normal way to run this is with an asyncExec() on the display to init the image registry. Looks like there might be race that this causing the trouble. Likely not an Eclipse issue.
Looks like an issue with com.ibm.debug.pdt. Closing as Not Eclipse.
