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Bug 256562

Summary:	NullPointerException at javax.swing.text.JTextComponent.setCaretPosition
Product:	platform	Reporter:	Alexander Pepin <apepin>
Component:	Text	Assignee:	Miloslav Metelka <mmetelka>
Status:	NEW ---
Severity:	normal	CC:	abalint21, alexvsimon, bartvdc, Danny1071, emiddio, issues, javatlacati, jiai, legitalk, lolo_101, markiewb, nzero2002, obrejla, rrohm, stefan79, Vitex
Priority:	P2
Version:	8.1
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	220724
Attachments:	stacktrace stacktrace stacktrace stacktrace stacktrace

Description Alexander Pepin 2015-11-12 16:43:49 UTC

Build: NetBeans IDE 8.1 (Build cnd-build-11765-on-20151112)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.60-b23, Java(TM) SE Runtime Environment, 1.8.0_60-b27
OS: Linux

User Comments:
apepin: -set breakpoint in java code on a native method invocation 
-set breakpoint in java code after  a native method invocation
- start debugging  
- when the first breakpoint is reached do step into the native method
- do step over in the native code then press continue
- when the second BP is reached press continue to complete debugging
Result: NPE occurs together with couple of debugger error  windows.

GUEST: debugging




Stacktrace: 
java.lang.NullPointerException
   at javax.swing.text.JTextComponent.setCaretPosition(JTextComponent.java:1631)
   at org.openide.text.DocumentOpenClose$DocumentLoad$1.run(DocumentOpenClose.java:806)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)

Comment 1 Alexander Pepin 2015-11-12 16:43:51 UTC

Created attachment 157312 [details]
stacktrace

Comment 2 Alexander Pepin 2015-11-12 16:46:55 UTC

In CND the same situation occurs with a bit different exceptions and debugger error windows

Comment 3 Alexander Pepin 2015-11-12 16:50:42 UTC

please disregard the latest comment #2

Comment 4 Alexander Pepin 2015-11-12 16:52:10 UTC

see also bug #256544

Comment 5 Alexander Pepin 2015-11-12 16:57:59 UTC

One more concomitant exception
java.lang.NullPointerException
	at org.netbeans.modules.cnd.debugger.gdb2.GdbDebuggerImpl.makeThreadCurrent(GdbDebuggerImpl.java:1860)
	at org.netbeans.modules.cnd.debugger.gdb2.GdbDebuggerImpl$21.onDone(GdbDebuggerImpl.java:2320)
	at org.netbeans.modules.cnd.debugger.gdb2.mi.MICommandManager.dispatch(MICommandManager.java:194)
	at org.netbeans.modules.cnd.debugger.gdb2.mi.MIProxy.dispatch(MIProxy.java:188)
	at org.netbeans.modules.cnd.debugger.gdb2.Gdb$MyMIProxy.dispatch(Gdb.java:697)
	at org.netbeans.modules.cnd.debugger.gdb2.mi.MIProxy.result(MIProxy.java:193)
	at org.netbeans.modules.cnd.debugger.gdb2.mi.MIProxy.processLine(MIProxy.java:157)
	at org.netbeans.modules.cnd.debugger.gdb2.Tap$4.run(Tap.java:327)
Caused: java.lang.Exception: when processing line: 155^done,threads=[]

	at org.netbeans.modules.cnd.debugger.gdb2.Tap$4.run(Tap.java:329)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
	at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
	at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)

Comment 6 Alexander Simon 2015-12-15 14:19:59 UTC

Created attachment 157795 [details]
stacktrace

close editor

Comment 7 Exceptions Reporter 2015-12-17 14:08:04 UTC

This bug already has 5 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=220724

Comment 8 Vitex 2015-12-17 15:08:03 UTC

Created attachment 157824 [details]
stacktrace

Closing projec opened twice

Comment 9 markiewb 2016-02-14 18:37:49 UTC

Created attachment 158495 [details]
stacktrace

Closing several files, while switching to a differnt git branch

Comment 10 stefan79 2017-01-27 08:59:43 UTC

Created attachment 163482 [details]
stacktrace

NullPointer occured (after closing a Java-src-file).

Comment 11 javatlacati 2017-04-30 21:59:06 UTC

Issue has already 45 duplicates