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Bug 457623

Summary:	IllegalArgumentException computing proposals for inner class field in display view
Product:	[Eclipse Project] JDT	Reporter:	Michael Rennie <Michael_Rennie>
Component:	Debug	Assignee:	JDT-Debug-Inbox <jdt-debug-inbox>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	normal
Priority:	P3	CC:	sarika.sinha
Version:	4.5
Target Milestone:	---
Hardware:	PC
OS:	Windows 7
Whiteboard:	stalebug

Description Michael Rennie

2015-01-15 11:21:27 EST

Consider the snippet from bug 45507 (changed a bit):
public class MyClass {
  public Runnable m1() {
    return new Runnable() {
      private int innerClassField;
      public void run() {
        innerClassField++; // << breakpoint goes here
      }
    };
  }
  
  public static void main(String[] args) {
	MyClass mc = new MyClass();
	mc.m1().run();
}
}

If you open the Display view, enter 'inner' and activate content assist, you get the following exception:
 

java.lang.IllegalArgumentException
	at org.eclipse.jdt.core.Signature.appendClassTypeSignature(Signature.java:589)
	at org.eclipse.jdt.core.Signature.appendTypeSignature(Signature.java:912)
	at org.eclipse.jdt.core.Signature.appendTypeSignature(Signature.java:856)
	at org.eclipse.jdt.core.Signature.toCharArray(Signature.java:2638)
	at org.eclipse.jdt.ui.text.java.CompletionProposalCollector.getDeclaringType(CompletionProposalCollector.java:619)
	at org.eclipse.jdt.ui.text.java.CompletionProposalCollector.isFiltered(CompletionProposalCollector.java:573)
	at org.eclipse.jdt.internal.debug.ui.contentassist.JavaDebugCompletionProposalCollector.isFiltered(JavaDebugCompletionProposalCollector.java:49)
	at org.eclipse.jdt.ui.text.java.CompletionProposalCollector.accept(CompletionProposalCollector.java:245)
	at org.eclipse.jdt.internal.codeassist.CompletionEngine.findFields(CompletionEngine.java:6444)
	at org.eclipse.jdt.internal.codeassist.CompletionEngine.findFields(CompletionEngine.java:6579)
	at org.eclipse.jdt.internal.codeassist.CompletionEngine.findVariablesAndMethods(CompletionEngine.java:11835)
	at org.eclipse.jdt.internal.codeassist.CompletionEngine.completionOnSingleNameReference(CompletionEngine.java:3295)
	at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(CompletionEngine.java:1713)
	at org.eclipse.jdt.internal.codeassist.CompletionEngine.complete(CompletionEngine.java:2083)
	at org.eclipse.jdt.internal.core.SourceType.codeComplete(SourceType.java:131)
	at org.eclipse.jdt.internal.core.SourceType.codeComplete(SourceType.java:91)
	at org.eclipse.jdt.internal.core.SourceType.codeComplete(SourceType.java:79)
	at org.eclipse.jdt.internal.debug.ui.contentassist.JavaDebugContentAssistProcessor.computeCompletionProposals(JavaDebugContentAssistProcessor.java:145)
	at org.eclipse.jface.text.contentassist.ContentAssistant$5.run(ContentAssistant.java:1904)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.jface.text.contentassist.ContentAssistant.computeCompletionProposals(ContentAssistant.java:1902)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.computeProposals(CompletionProposalPopup.java:573)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$16(CompletionProposalPopup.java:570)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:505)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
	at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:499)
	at org.eclipse.jface.text.contentassist.ContentAssistant.showPossibleCompletions(ContentAssistant.java:1720)
	at org.eclipse.jface.text.source.SourceViewer.doOperation(SourceViewer.java:967)
	at org.eclipse.jdt.internal.debug.ui.display.DisplayViewAction.run(DisplayViewAction.java:52)
	at org.eclipse.jdt.internal.debug.ui.display.DisplayView$3.execute(DisplayView.java:288)
	at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
	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.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:55)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:247)
	at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:229)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
	at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:149)
	at org.eclipse.core.commands.Command.executeWithChecks(Command.java:499)
	at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:508)
	at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.executeCommand(KeyBindingDispatcher.java:286)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.press(KeyBindingDispatcher.java:507)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.processKeyEvent(KeyBindingDispatcher.java:558)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.filterKeySequenceBindings(KeyBindingDispatcher.java:378)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher.access$0(KeyBindingDispatcher.java:324)
	at org.eclipse.e4.ui.bindings.keys.KeyBindingDispatcher$KeyDownFilter.handleEvent(KeyBindingDispatcher.java:86)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
	at org.eclipse.swt.widgets.Display.filterEvent(Display.java:1262)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1060)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1085)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1070)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1112)
	at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1108)
	at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1529)
	at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:4746)
	at org.eclipse.swt.widgets.Canvas.WM_CHAR(Canvas.java:343)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4627)
	at org.eclipse.swt.widgets.Canvas.windowProc(Canvas.java:339)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:5042)
	at org.eclipse.swt.internal.win32.OS.CallWindowProcW(Native Method)
	at org.eclipse.swt.internal.win32.OS.CallWindowProc(OS.java:2443)
	at org.eclipse.swt.internal.BidiUtil.windowProc(BidiUtil.java:640)
	at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
	at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:2549)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3759)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
	at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:648)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:592)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
	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:380)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
	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:648)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1465)

The exception occurs with and without the fix from bug 45507.

Comment 1 Eclipse Genie

2020-02-14 11:24:26 EST

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. As such, we're closing this bug.

If you have further information on the current state of the bug, please add it and reopen this bug. 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.