Logpoints can't be evaluated

When adding logpoints to sun.awt.X11.XDragSourcePeer, I often get errors.

Environment

• Operating System: Ubuntu 22.04.4 LTS
• JDK version: OpenJDK Runtime Environment Temurin-17.0.11+9 (build 17.0.11+9)
• Visual Studio Code version: 1.91.1
• Java extension version: v1.32.0
• Java Debugger extension version: v0.58.0

Steps To Reproduce

1. Use attached source file
2. Extract jdk src.zip and add to classpath (I forget how I did this)
3. Open "Java Projects" > java.desktop > sun.awt.X11 > XDragSourceContextPeer, add "Hello world" logpoint to line 483 (which is doUpdateTargetWindow(subwindow, time);.
4. Get error [Logpoint] Log message 'Hello world' error: Cannot evaluate because of compilation error(s): Evaluations must contain either an expression or block of well-formed statements
5. Observe > [Warn - 3:19:18 PM] Jul 23, 2024, 3:19:18 PM Compile error during code evaluation: sun.awt.X11.XMotionEvent cannot be resolved to a type in the Language Support for Java log.

Sample program:

import javax.swing.*;
import java.awt.*;
import java.awt.datatransfer.*;
import java.awt.dnd.*;
import java.awt.event.*;
import java.util.logging.ConsoleHandler;

import java.util.logging.Level;
import java.util.logging.Logger;

public class DragAndDropExample extends JFrame {

    public DragAndDropExample() {
        setTitle("Drag and Drop Example");
        setSize(400, 300);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        JTextArea sourceTextArea = new JTextArea("Drag this text");
        sourceTextArea.setDragEnabled(true);
        sourceTextArea.setLineWrap(true);
        sourceTextArea.setWrapStyleWord(true);
        JScrollPane sourceScrollPane = new JScrollPane(sourceTextArea);

        JTextArea targetTextArea = new JTextArea("Drop here");
        targetTextArea.setLineWrap(true);
        targetTextArea.setWrapStyleWord(true);
        JScrollPane targetScrollPane = new JScrollPane(targetTextArea);

        new DropTarget(targetTextArea, new DropTargetListener() {
            @Override
            public void dragEnter(DropTargetDragEvent dtde) {
                if (dtde.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                    dtde.acceptDrag(DnDConstants.ACTION_COPY);
                    System.out.println("Drag Enter: Data flavor supported");
                } else {
                    dtde.rejectDrag();
                    System.out.println("Drag Enter: Data flavor not supported");
                }
            }

            @Override
            public void dragOver(DropTargetDragEvent dtde) {
                // No action needed here
            }

            @Override
            public void dropActionChanged(DropTargetDragEvent dtde) {
                // No action needed here
            }

            @Override
            public void dragExit(DropTargetEvent dte) {
                System.out.println("Drag Exit");
            }

            @Override
            public void drop(DropTargetDropEvent dtde) {
                try {
                    if (dtde.isDataFlavorSupported(DataFlavor.stringFlavor)) {
                        dtde.acceptDrop(DnDConstants.ACTION_COPY);
                        String droppedText = (String) dtde.getTransferable().getTransferData(DataFlavor.stringFlavor);
                        targetTextArea.append(droppedText);
                        dtde.dropComplete(true);
                        System.out.println("Drop: Success");
                    } else {
                        dtde.rejectDrop();
                        System.out.println("Drop: Data flavor not supported");
                    }
                } catch (Exception ex) {
                    ex.printStackTrace();
                    dtde.dropComplete(false);
                    System.out.println("Drop: Exception occurred");
                }
            }
        });

        setLayout(new GridLayout(2, 1));
        add(sourceScrollPane);
        add(targetScrollPane);
    }

    public static void main(String[] args) {

        Logger platformLogger = Logger.getLogger("sun.awt.X11.xembed.xdnd.XDnDDropSourceProtocol");
        platformLogger.setLevel(Level.ALL);
        
        ConsoleHandler consoleHandler = new ConsoleHandler();
        consoleHandler.setLevel(Level.ALL);
        platformLogger.addHandler(consoleHandler);

        SwingUtilities.invokeLater(() -> {
            new DragAndDropExample().setVisible(true);
        });
    }
}

Language support for Java logs:

Jul 23, 2024 3:18:58 PM org.apache.aries.spifly.BaseActivator log
INFO: Registered provider ch.qos.logback.classic.servlet.LogbackServletContainerInitializer of service jakarta.servlet.ServletContainerInitializer in bundle ch.qos.logback.classic
Jul 23, 2024 3:18:58 PM org.apache.aries.spifly.BaseActivator log
INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic
Jul 23, 2024 3:19:01 PM com.microsoft.java.debug.plugin.internal.JavaDebuggerServerPlugin start
INFO: Starting com.microsoft.java.debug.plugin
Jul 23, 2024 3:19:13 PM com.microsoft.java.debug.core.UsageDataSession recordInfo
INFO: launch debug info
Jul 23, 2024 3:19:14 PM com.microsoft.java.debug.core.UsageDataSession recordResponse
WARNING: abnormal response
[Warn  - 3:19:18 PM] Jul 23, 2024, 3:19:18 PM Compile error during code evaluation: sun.awt.X11.XMotionEvent cannot be resolved to a type
[Error - 3:19:18 PM] Jul 23, 2024, 3:19:18 PM [Logpoint]: Cannot evaluate because of compilation error(s): Evaluations must contain either an expression or a block of well-formed statements.
Cannot evaluate because of compilation error(s): Evaluations must contain either an expression or a block of well-formed statements.
com.microsoft.java.debug.core.DebugException: Cannot evaluate because of compilation error(s): Evaluations must contain either an expression or a block of well-formed statements.
	at com.microsoft.java.debug.core.adapter.AdapterUtils.createUserErrorDebugException(AdapterUtils.java:274)
	at com.microsoft.java.debug.plugin.internal.eval.JdtEvaluationProvider.evaluate(JdtEvaluationProvider.java:176)
	at com.microsoft.java.debug.plugin.internal.eval.JdtEvaluationProvider.evaluateForBreakpoint(JdtEvaluationProvider.java:108)
	at com.microsoft.java.debug.core.adapter.handler.SetBreakpointsRequestHandler.lambda$registerBreakpointHandler$7(SetBreakpointsRequestHandler.java:206)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

Jul 23, 2024 3:19:18 PM com.microsoft.java.debug.core.adapter.handler.SetBreakpointsRequestHandler handleEvaluationResult
SEVERE: [Logpoint]: Cannot evaluate because of compilation error(s): Evaluations must contain either an expression or a block of well-formed statements.
com.microsoft.java.debug.core.DebugException: Cannot evaluate because of compilation error(s): Evaluations must contain either an expression or a block of well-formed statements.
	at com.microsoft.java.debug.core.adapter.AdapterUtils.createUserErrorDebugException(AdapterUtils.java:274)
	at com.microsoft.java.debug.plugin.internal.eval.JdtEvaluationProvider.evaluate(JdtEvaluationProvider.java:176)
	at com.microsoft.java.debug.plugin.internal.eval.JdtEvaluationProvider.evaluateForBreakpoint(JdtEvaluationProvider.java:108)
	at com.microsoft.java.debug.core.adapter.handler.SetBreakpointsRequestHandler.lambda$registerBreakpointHandler$7(SetBreakpointsRequestHandler.java:206)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$AsyncRun.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)

Current Result

Error message is shown instead of log messages.

Expected Result

Log messages are logged.

Additional Informations

This seems to be the relevant error:

[Warn - 3:19:18 PM] Jul 23, 2024, 3:19:18 PM Compile error during code evaluation: sun.awt.X11.XMotionEvent cannot be resolved to a type

Commencez par suivre JdtEvaluationProvider.evaluateForBreakpoint et le chemin de SetBreakpointsRequestHandler indiqué dans la stack trace. Reproduisez le logpoint sur sun.awt.X11.XDragSourcePeer et cherchez pourquoi l’évaluation indique que sun.awt.X11.XMotionEvent ne peut pas être résolu. Le travail est terminé lorsque le même logpoint produit son message sans l’erreur de compilation.