Comment 1 Jared Burns 2003-09-19 17:28:28 EDT

The following was in the log:

!SESSION Sep 19, 2003 14:22:41.994 ---------------------------------------------
java.version=1.4.1-rc
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Command-line arguments: -pdelaunch -data /home/jburns/runtime-workspace -feature org.
eclipse.platform -dev bin -os linux -ws gtk -arch x86 -nl en_US -configuration file:
/home/jburns/target/.metadata/.plugins/org.eclipse.pde.
core/_home_jburns_runtime-workspace/platform.cfg -install file:/home/jburns/host/eclipse/
!ENTRY org.eclipse.ui.workbench 4 2 Sep 19, 2003 14:22:41.998
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.NullPointerException
	at org.eclipse.jdt.internal.compiler.parser.Scanner.getNextToken(Scanner.java:829)
	at org.eclipse.jdt.core.JavaConventions.scannedIdentifier(JavaConventions.java:130)
	at org.eclipse.jdt.core.JavaConventions.validateIdentifier(JavaConventions.java:263)
	at org.eclipse.jdt.core.JavaConventions.validateCompilationUnitName(JavaConventions.
java:182)
	at org.eclipse.jdt.internal.core.Util.isValidCompilationUnitName(Util.java:837)
	at org.eclipse.jdt.internal.core.JavaModelManager.create(JavaModelManager.java:260)
	at org.eclipse.jdt.core.JavaCore.create(JavaCore.java:895)
	at org.eclipse.jdt.core.JavaCore.create(JavaCore.java:867)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectMarkerRulerAction.
getCompilationUnit(JavaSelectMarkerRulerAction.java:127)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectMarkerRulerAction.
getJavaAnnotationPosition(JavaSelectMarkerRulerAction.java:90)
	at org.eclipse.jdt.internal.ui.javaeditor.JavaSelectMarkerRulerAction.
update(JavaSelectMarkerRulerAction.java:78)
	at org.eclipse.ui.texteditor.AbstractRulerActionDelegate.
update(AbstractRulerActionDelegate.java:112)
	at org.eclipse.ui.texteditor.AbstractRulerActionDelegate.
setActiveEditor(AbstractRulerActionDelegate.java:84)
	at org.eclipse.ui.internal.EditorPluginAction.editorChanged(EditorPluginAction.java:65)
	at org.eclipse.ui.internal.EditorActionBuilder$EditorContribution.
editorChanged(EditorActionBuilder.java:86)
	at org.eclipse.ui.internal.EditorActionBuilder$ExternalContributor.
setActiveEditor(EditorActionBuilder.java:131)
	at org.eclipse.ui.internal.EditorActionBars.partChanged(EditorActionBars.java:178)
	at org.eclipse.ui.internal.WorkbenchPage$2.run(WorkbenchPage.java:447)
	at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatform.java:1016)
	at org.eclipse.core.runtime.Platform.run(Platform.java:420)
	at org.eclipse.ui.internal.WorkbenchPage.activatePart(WorkbenchPage.java:439)
	at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:2506)
	at org.eclipse.ui.internal.WorkbenchPage.requestActivation(WorkbenchPage.java:2242)
	at org.eclipse.ui.internal.PartPane.requestActivation(PartPane.java:334)
	at org.eclipse.ui.internal.EditorPane.requestActivation(EditorPane.java:136)
	at org.eclipse.ui.internal.PartPane.setFocus(PartPane.java:356)
	at org.eclipse.ui.internal.EditorWorkbook$2.widgetSelected(EditorWorkbook.java:178)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:89)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:948)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:972)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:957)
	at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:827)
	at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:1739)
	at org.eclipse.swt.custom.CTabFolder.onMouseDown(CTabFolder.java:1927)
	at org.eclipse.swt.custom.CTabFolder.access$4(CTabFolder.java:1919)
	at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:201)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:948)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1872)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1652)
	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2037)
	at org.eclipse.ui.internal.Workbench.run(Workbench.java:2020)
	at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:858)
	at org.eclipse.core.boot.BootLoader.run(BootLoader.java:461)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.
java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at org.eclipse.core.launcher.Main.basicRun(Main.java:295)
	at org.eclipse.core.launcher.Main.run(Main.java:751)
	at org.eclipse.core.launcher.Main.main(Main.java:587)

Comment 2 Olivier Thomann 2003-09-19 17:54:47 EDT

Could you please provide a test case?

Comment 3 Jared Burns 2003-09-19 19:17:44 EDT

This is the code I was testing with, but I can't reproduce the problem. I swiped the contents of the 
main method except for the last line and hit ctrl+/ to comment it out (so the program would only 
print out the "at Grah..."). I then tried to save and got the error dialog ("save failed"). That's when I 
noticed the errors in the console and found the error in the log.

public class Grah {
  String blah= "blah";
  public static void main(String[] args) {
    System.out.println(args[0]);
    for (int i= 0; i < 10; i++) {
      System.out.println("la");
    }
    new Grah().foo();
    String grah= "grah ";
    String grah1= "grah  ";
    System.err.print("at Grah.main(Grah.java:12)");
  }
public void foo() {
  System.out.println("foo");
  blah= "dah";
}
}

Comment 4 Philipe Mulet 2003-09-22 12:49:53 EDT

Offending line in Scanner is:
			int offset = 0;

Highly suspecting a VM bug...
Please reopen if symptoms persist.