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Eclipse version: Version: Neon.2 Release (4.6.2) Build id: 20161208-0600 The following unit tests causes an unhandled Exception when I attempt to run it via context menu > Run > Run as JUnit test. In fact, the submenu below Run and Debug there doesnt't even show up. import java.util.Iterator; import java.util.function.Function; public class LambdaUniqueKey { class O<T> { <R> O<R> g(Function<T, Iterable<R>> it) { return null; } } <T, R> void s(Function<O<Integer>, O<R>> mapper) { } @Test public void m() { this.s(f -> f.g(s -> () -> new Iterator<Integer>() { @Override public boolean hasNext() { return true; }; @Override public Integer next() { return 1; }; })); } } Exception: java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding.computeUniqueKey(TypeVariableBinding.java:362) at org.eclipse.jdt.internal.compiler.lookup.ParameterizedTypeBinding.computeUniqueKey(ParameterizedTypeBinding.java:358) at org.eclipse.jdt.internal.compiler.lookup.ParameterizedTypeBinding.computeUniqueKey(ParameterizedTypeBinding.java:358) at org.eclipse.jdt.internal.compiler.lookup.MethodBinding.computeUniqueKey(MethodBinding.java:429) at org.eclipse.jdt.internal.compiler.lookup.Binding.computeUniqueKey(Binding.java:118) at org.eclipse.jdt.internal.core.LambdaFactory.createLambdaMethod(LambdaFactory.java:49) at org.eclipse.jdt.internal.core.LambdaExpression.<init>(LambdaExpression.java:56) at org.eclipse.jdt.internal.core.LambdaFactory.createLambdaExpression(LambdaFactory.java:26) at org.eclipse.jdt.internal.core.util.HandleFactory.createElement(HandleFactory.java:216) at org.eclipse.jdt.internal.core.util.HandleFactory.createElement(HandleFactory.java:211) at org.eclipse.jdt.internal.core.util.HandleFactory.createElement(HandleFactory.java:182) at org.eclipse.jdt.internal.core.util.HandleFactory.createElement(HandleFactory.java:162) at org.eclipse.jdt.internal.core.hierarchy.HierarchyResolver.rememberAllTypes(HierarchyResolver.java:486) at org.eclipse.jdt.internal.core.hierarchy.HierarchyResolver.resolve(HierarchyResolver.java:831) at org.eclipse.jdt.internal.core.hierarchy.HierarchyResolver.resolve(HierarchyResolver.java:628) at org.eclipse.jdt.internal.core.hierarchy.HierarchyBuilder.buildSupertypes(HierarchyBuilder.java:116) at org.eclipse.jdt.internal.core.hierarchy.IndexBasedHierarchyBuilder.build(IndexBasedHierarchyBuilder.java:151) at org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy.compute(TypeHierarchy.java:315) at org.eclipse.jdt.internal.core.hierarchy.TypeHierarchy.refresh(TypeHierarchy.java:1286) at org.eclipse.jdt.internal.core.CreateTypeHierarchyOperation.executeOperation(CreateTypeHierarchyOperation.java:90) at org.eclipse.jdt.internal.core.JavaModelOperation.run(JavaModelOperation.java:724) at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:790) at org.eclipse.jdt.internal.core.SourceType.newSupertypeHierarchy(SourceType.java:743) at org.eclipse.jdt.internal.core.SourceType.newSupertypeHierarchy(SourceType.java:695) at org.eclipse.jdt.internal.launching.JavaLaunchableTester.hasSuperclass(JavaLaunchableTester.java:467) at org.eclipse.jdt.internal.launching.JavaLaunchableTester.test(JavaLaunchableTester.java:611) at org.eclipse.core.internal.expressions.Property.test(Property.java:58) at org.eclipse.core.internal.expressions.TestExpression.evaluate(TestExpression.java:100) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateOr(CompositeExpression.java:68) at org.eclipse.core.internal.expressions.OrExpression.evaluate(OrExpression.java:22) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.AndExpression.evaluate(AndExpression.java:31) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.IterateExpression.evaluate(IterateExpression.java:160) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.WithExpression.evaluate(WithExpression.java:75) at org.eclipse.core.internal.expressions.CompositeExpression.evaluateAnd(CompositeExpression.java:53) at org.eclipse.core.internal.expressions.EnablementExpression.evaluate(EnablementExpression.java:55) at org.eclipse.debug.internal.ui.launchConfigurations.LaunchShortcutExtension.evalEnablementExpression(LaunchShortcutExtension.java:281) at org.eclipse.debug.ui.actions.ContextualLaunchAction.isApplicable(ContextualLaunchAction.java:287) at org.eclipse.debug.ui.actions.ContextualLaunchAction.fillMenu(ContextualLaunchAction.java:218) at org.eclipse.debug.ui.actions.ContextualLaunchAction$1.menuShown(ContextualLaunchAction.java:141) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:256) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4418) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1103) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1088) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:802) at org.eclipse.jface.action.ActionContributionItem.copyMenu(ActionContributionItem.java:1243) at org.eclipse.jface.action.ActionContributionItem.handleShowProxy(ActionContributionItem.java:1223) at org.eclipse.jface.action.ActionContributionItem.lambda$7(ActionContributionItem.java:1186) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4418) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1079) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1103) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1084) at org.eclipse.swt.widgets.Control.WM_INITMENUPOPUP(Control.java:5160) at org.eclipse.swt.widgets.Control.windowProc(Control.java:4828) at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:359) at org.eclipse.swt.widgets.Decorations.windowProc(Decorations.java:1656) at org.eclipse.swt.widgets.Shell.windowProc(Shell.java:2199) at org.eclipse.swt.widgets.Display.windowProc(Display.java:5123) at org.eclipse.swt.internal.win32.OS.TrackPopupMenu(Native Method) at org.eclipse.swt.widgets.Menu._setVisible(Menu.java:262) at org.eclipse.swt.widgets.Display.runPopups(Display.java:4277) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3818) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:138) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243) 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:673) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610) at org.eclipse.equinox.launcher.Main.run(Main.java:1519) Session data: eclipse.buildId=4.6.2.M20161124-1400 java.version=1.8.0_121 java.vendor=Oracle Corporation BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=hu_HU Framework arguments: -product org.eclipse.epp.package.jee.product Command-line arguments: -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.jee.product
Same crash with Version: Oxygen Release Milestone 5 (4.7.0 M5) Build id: 20170202-1353
This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie.
