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This bug was originally marked as duplicate of bug 141644, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.0.2 (Build 201411181905) VM: Java HotSpot(TM) 64-Bit Server VM, 25.0-b70, Java(TM) SE Runtime Environment, 1.8.0-b132 OS: Windows 7 User Comments: GUEST: Annotation: An unexpected internal exception occured in debug interface layer. Please submit this to your JVM vendor. Annotation: An unexpected internal exception occured in debug interface layer. Please submit this to your JVM vendor. An unexpected internal exception occured in debug interface layer. Please submit this to your JVM vendor. An unexpected internal exception occured in debug interface layer. Please submit this to your JVM vendor. Caused: com.sun.jdi.InternalException: Unexpected JDWP Error: 13 at com.sun.tools.jdi.JDWPException.toJDIException(JDWPException.java:47) at com.sun.tools.jdi.ThreadReferenceImpl.currentContendedMonitor(ThreadReferenceImpl.java:433) at org.netbeans.modules.debugger.jpda.jdi.ThreadReferenceWrapper.currentContendedMonitor(ThreadReferenceWrapper.java:60) at org.netbeans.modules.debugger.jpda.models.JPDAThreadImpl.checkForBlockingThreads(JPDAThreadImpl.java:1202) at org.netbeans.modules.debugger.jpda.SingleThreadWatcher.run(SingleThreadWatcher.j msauer: Neverending stream of exceptions while having debugger session active. bburette: Debugging GUEST: Deleted a watch. sreimers: fix in place GUEST: debugging app tkellerer: Debugging a JavaSE (Swing) application GUEST: While debugging presses continue and let the debugged program exit normally. Most likely the debugger couldn't handle the attached process endning The remote program was started with "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y" (jdk 6) fzamboj: was using F8 while debugging GUEST: I've just debugging my Java project. The error occured when my program tried to put null value to hash and debugging stopped. GUEST: debugging an application sidlo: debug program bburette: Debugging bburette: debug fzamboj: I was debugging application in JDK sources (Thread.java) when I got the exception. bburette: Debugging bburette: Debugging bburette: Debugging bburette: Debugging GUEST: continuing to step through a method in debug mode...Had an assert exception just before this and reported it.. probably related! bburette: Debugging yardus: debugging GUEST: debugging and error keeps popping up like hell please fix this shitty bug!!! bburette: Debugging bburette: Debugging bburette: Debugging GUEST: Trying to run a test UI app, with source adapted for IntelliJ, but originally written in NetBeans 6.5. mgoe: Exiting a program which has been debugged. msauer: Applying code changes haskovec: nothing just sitting at a breakpoint bburette: Debugging GUEST: When restart tomcat in debug mode aldobrucale: Debugging j2se application (keeps happening while I type) stefan79: Step by Step debugging GUEST: no idea really, was busy debugging and suddenly noticed this little red icon in the bottom right bburette: Debugging GUEST: class Message. contain an internal enum. contain a variable of this enum. contain a function that receive an int. switch on the variable of the enum. hang on this switch. bburette: Debugging GUEST: debugging bburette: Debugging fmcorp: Debug bburette: Debugging bburette: Debugging bburette: Debugging GUEST: Review in tbrunhoff: In debugger exception Stacktrace: com.sun.jdi.InternalException: Unexpected JDWP Error: 15 at com.sun.tools.jdi.JDWPException.toJDIException(JDWPException.java:65) at com.sun.tools.jdi.ThreadReferenceImpl.currentContendedMonitor(ThreadReferenceImpl.java:490) at org.netbeans.modules.debugger.jpda.jdi.ThreadReferenceWrapper.currentContendedMonitor(ThreadReferenceWrapper.java:75) at org.netbeans.modules.debugger.jpda.models.JPDAThreadImpl.checkForBlockingThreads(JPDAThreadImpl.java:1868) at org.netbeans.modules.debugger.jpda.SingleThreadWatcher.run(SingleThreadWatcher.java:87) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
Created attachment 154282 [details] stacktrace
JDWP Error 15 is: Thread has not been started or is now dead.
Fixed by 289067:73f6a39774d9 http://hg.netbeans.org/core-main/rev/73f6a39774d9
Integrated into 'main-silver', will be available in build *201506260309* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-silver/rev/73f6a39774d9 User: mentlicher@netbeans.org Log: #253058: Do not ask threads that did not start yet, or died already, for current contended monitor.