Bugzilla – Full Text Bug Listing
| Summary: | [1.5] NPE in TypeVariableBinding.checkBounds | ||
|---|---|---|---|
| Product: | [Eclipse Project] JDT | Reporter: | Kory Markevich <vulcannis> |
| Component: | Core | Assignee: | Kent Johnson <kent_johnson> |
| Status: | CLOSED FIXED | QA Contact: | |
| Severity: | normal | ||
| Priority: | P3 | CC: | philippe_mulet |
| Version: | 3.1 | ||
| Target Milestone: | 3.1 RC2 | ||
| Hardware: | PC | ||
| OS: | Windows 2000 | ||
| Whiteboard: | |||
Just an update: content assist, content information, quick fix (but not assist), and some refactorings (sometimes just display the refactoring menu) also trigger this. I have this bug happening in a large project and it pretty much reduces Eclipse to a basic text editor. Reduced testcase with 2 files:
public class Test<
K extends Key<T, K>,
T extends Test<K, T>> {
}
public class Key<
TT extends Test<KK, TT>,
KK extends Key<TT, KK>> {
}
Fixed. Hover over any of the types/variables. Added ResolveTest_1_5 test0097 Verified using N20050606-0010 + JDT/Core HEAD Verified for 3.1 RC2 using build I20050610-0010 close |
Found in 3.1M7. Using the following code, each class in it's own source file: public class Test< T extends Test< T, B, C >, B extends Key< T, B, C >, C extends State > { } public class Key< T extends Test< T, K, S >, K extends Key< T, K, S >, S extends State > { } public class State { } Attempting to Open Declaration or Source Hover over the types inside the type restrictions results in an NPE. e.g., put the cursor in "State" of the fragment "S extends State" of Test.java, and hit F3. The following NPE should occur: Error 2005-05-16 15:12:41.25 java.lang.NullPointerException java.lang.NullPointerException at org.eclipse.jdt.internal.compiler.lookup.TypeVariableBinding.boundCheck(TypeVariableBinding.java:73) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.checkBounds(ParameterizedSingleTypeReference.java:41) at org.eclipse.jdt.internal.compiler.ast.TypeParameter.checkBounds(TypeParameter.java:36) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.checkParameterizedTypeBounds(ClassScope.java:680) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:867) at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:254) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:249) at org.eclipse.jdt.internal.codeassist.impl.Engine.accept(Engine.java:84) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.askForType(LookupEnvironment.java:131) at org.eclipse.jdt.internal.compiler.lookup.PackageBinding.getTypeOrPackage(PackageBinding.java:178) at org.eclipse.jdt.internal.compiler.lookup.Scope.getTypeOrPackage(Scope.java:2489) at org.eclipse.jdt.internal.compiler.lookup.Scope.getType(Scope.java:2235) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.internalResolveType(ParameterizedSingleTypeReference.java:101) at org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference.resolveType(ParameterizedSingleTypeReference.java:214) at org.eclipse.jdt.internal.compiler.lookup.Scope.connectTypeVariables(Scope.java:402) at org.eclipse.jdt.internal.compiler.lookup.ClassScope.connectTypeHierarchy(ClassScope.java:861) at org.eclipse.jdt.internal.compiler.lookup.CompilationUnitScope.connectTypeHierarchy(CompilationUnitScope.java:254) at org.eclipse.jdt.internal.compiler.lookup.LookupEnvironment.completeTypeBindings(LookupEnvironment.java:249) at org.eclipse.jdt.internal.codeassist.SelectionEngine.select(SelectionEngine.java:646) at org.eclipse.jdt.internal.core.Openable.codeSelect(Openable.java:165) at org.eclipse.jdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:314) at org.eclipse.jdt.internal.core.CompilationUnit.codeSelect(CompilationUnit.java:308) at org.eclipse.jdt.internal.ui.actions.SelectionConverter.codeResolve(SelectionConverter.java:219) at org.eclipse.jdt.internal.ui.actions.SelectionConverter.codeResolve(SelectionConverter.java:153) at org.eclipse.jdt.internal.ui.actions.SelectionConverter.codeResolve(SelectionConverter.java:162) at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:128) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:226) at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:198) at org.eclipse.jface.action.Action.runWithEvent(Action.java:996) at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:182) at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper.execute(LegacyHandlerWrapper.java:108) at org.eclipse.core.commands.Command.execute(Command.java:311) at org.eclipse.core.commands.ParameterizedCommand.execute(ParameterizedCommand.java:396) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:452) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:722) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:766) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:543) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$3(WorkbenchKeyboard.java:486) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter.handleEvent(WorkbenchKeyboard.java:110) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:781) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:841) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:866) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:851) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:879) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:875) at org.eclipse.swt.widgets.Widget.wmKeyDown(Widget.java:1467) at org.eclipse.swt.widgets.Control.WM_KEYDOWN(Control.java:3347) at org.eclipse.swt.widgets.Control.windowProc(Control.java:3067) at org.eclipse.swt.widgets.Display.windowProc(Display.java:3513) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1650) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2552) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1601) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1565) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:315) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103) at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:230) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:371) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:160) 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.core.launcher.Main.invokeFramework(Main.java:330) at org.eclipse.core.launcher.Main.basicRun(Main.java:274) at org.eclipse.core.launcher.Main.run(Main.java:977) at org.eclipse.core.launcher.Main.main(Main.java:952) If the Key and Test classes share the same source file, then this error doesn't occur.