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Here is a typical stack captured while waiting for completion proposals: "main" prio=10 tid=0x09406400 nid=0x743d runnable [0xffea3000] java.lang.Thread.State: RUNNABLE at (C/C++) __kernel_vsyscall( ()) at (C/C++) Monitor::ILock(Thread*)( (/usr/local/buildtools/java/jdk6-google-v3/bin/../jre/lib/i386/client/libjvm.so)) at (C/C++) Monitor::lock_without_safepoint_check(Thread*)( (/usr/local/buildtools/java/jdk6-google-v3/bin/../jre/lib/i386/client/libjvm.so)) at (C/C++) Monitor::lock_without_safepoint_check()( (/usr/local/buildtools/java/jdk6-google-v3/bin/../jre/lib/i386/client/libjvm.so)) at (C/C++) SafepointSynchronize::block(JavaThread*)( (/usr/local/buildtools/java/jdk6-google-v3/bin/../jre/lib/i386/client/libjvm.so)) at (C/C++) ThreadSafepointState::handle_polling_page_exception()( (/usr/local/buildtools/java/jdk6-google-v3/bin/../jre/lib/i386/client/libjvm.so)) at (C/C++) SafepointSynchronize::handle_polling_page_exception(JavaThread*)( (/usr/local/buildtools/java/jdk6-google-v3/bin/../jre/lib/i386/client/libjvm.so)) at (C/C++) [Unknown frame (generated stub/JIT)]([Unknown source]) at java.lang.Character.toLowerCase(Character.java:3709) at java.lang.Character.toLowerCase(Character.java:3680) at org.eclipse.jdt.internal.compiler.parser.ScannerHelper.toLowerCase(ScannerHelper.java:319) at org.eclipse.jdt.core.compiler.CharOperation.indexOf(CharOperation.java:2126) at org.eclipse.jdt.core.compiler.CharOperation.indexOf(CharOperation.java:2063) at org.eclipse.jdt.internal.core.JavadocContents.computeChildRange(JavadocContents.java:148) at org.eclipse.jdt.internal.core.JavadocContents.computeMethodRange(JavadocContents.java:336) at org.eclipse.jdt.internal.core.JavadocContents.getMethodDoc(JavadocContents.java:126) - locked <0xbee9b0e8> (a org.eclipse.jdt.internal.core.JavadocContents) at org.eclipse.jdt.internal.core.BinaryMethod.getParameterNames(BinaryMethod.java:254) at org.eclipse.jdt.internal.codeassist.InternalCompletionProposal.findMethodParameterNames(InternalCompletionProposal.java:317) at org.eclipse.jdt.internal.codeassist.InternalCompletionProposal.findParameterNames(InternalCompletionProposal.java:1416) at org.eclipse.jdt.ui.text.java.CompletionProposalLabelProvider.appendUnboundedParameterList(CompletionProposalLabelProvider.java:112) at org.eclipse.jdt.ui.text.java.CompletionProposalLabelProvider.createMethodProposalLabel(CompletionProposalLabelProvider.java:271) at org.eclipse.jdt.ui.text.java.CompletionProposalLabelProvider.createStyledLabel(CompletionProposalLabelProvider.java:561) at org.eclipse.jdt.internal.ui.text.java.LazyJavaCompletionProposal.computeDisplayString(LazyJavaCompletionProposal.java:247) at org.eclipse.jdt.internal.ui.text.java.LazyJavaCompletionProposal.getStyledDisplayString(LazyJavaCompletionProposal.java:226) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.handleSetData(CompletionProposalPopup.java:829) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$24(CompletionProposalPopup.java:819) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$3.handleEvent(CompletionProposalPopup.java:583) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1258) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1282) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1267) at org.eclipse.swt.widgets.Table.checkData(Table.java:286) at org.eclipse.swt.widgets.Table.cellDataProc(Table.java:223) at org.eclipse.swt.widgets.Display.cellDataProc(Display.java:746) at (C/C++) [Unknown frame (generated stub/JIT)]([Unknown source]) at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method) at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:8168) at org.eclipse.swt.widgets.Display.eventProc(Display.java:1238) at (C/C++) [Unknown frame (generated stub/JIT)]([Unknown source]) at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method) at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:2229) at org.eclipse.swt.widgets.Shell.setVisible(Shell.java:1997) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.displayProposals(CompletionProposalPopup.java:1194) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.access$23(CompletionProposalPopup.java:1159) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$2.run(CompletionProposalPopup.java:500) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.text.contentassist.CompletionProposalPopup.showProposals(CompletionProposalPopup.java:482) at org.eclipse.jface.text.contentassist.ContentAssistant$2.run(ContentAssistant.java:376) at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35) at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134) - locked <0xa57e5d08> (a org.eclipse.swt.widgets.RunnableLock) at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3515) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3164) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2644) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2606) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2440) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:683) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:676) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) at (C/C++) [Unknown frame (generated stub/JIT)]([Unknown source]) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574) at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
Are you sure that you have 3.6.2 installed (you should have 'org.eclipse.jdt.core_3.6.2.v_A76_R36x.jar' in the 'plugins' folder)? We fixed bug 329288 for 3.6.2 which looks related to your issue. Which JRE are you using? Do you have source and/or Javadoc attached? If Javadoc is attached: is it on disk or fetched from the web?
Should be a dup of bug 329288.
*** This bug has been marked as a duplicate of bug 329288 ***
