Bug 149805

Summary:	undo crash use case
Product:	[Applications] umbrello	Reporter:	Ayvind Binde <omb>
Component:	general	Assignee:	Umbrello Development Group <umbrello-devel>
Status:	RESOLVED FIXED
Severity:	crash	CC:	kde
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:	4.13.0
Sentry Crash Report:

Description Ayvind Binde 2007-09-12 15:35:59 UTC

Version:           1.5.71 (using KDE KDE 3.5.7)
Installed from:    Compiled From Sources
Compiler:          gcc 

When clicking 'ctrl+z' (undo) in use case umbrello crashes. I compiled from source (on arch using kdemod 3.5.7)

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Using host libthread_db library "/lib/libthread_db.so.1".
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[New Thread -1233283360 (LWP 8945)]
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[KCrash handler]
#6  0xb72af1af in QValueList<QGListIterator*>::detachInternal ()
   from /opt/qt/lib/libqt-mt.so.3
#7  0xb72ae52d in QGListIterator::QGListIterator ()
   from /opt/qt/lib/libqt-mt.so.3
#8  0x081865eb in Model_Utils::findObjectInList ()
#9  0x0819a070 in UMLPackage::findObjectById ()
#10 0x081be601 in UMLDoc::findObjectById ()
#11 0x08166686 in UMLFolder::load ()
#12 0x08166490 in UMLFolder::load ()
#13 0x081eb00a in UMLObject::loadFromXMI ()
#14 0x081670ac in UMLFolder::load ()
#15 0x08166490 in UMLFolder::load ()
#16 0x081eb00a in UMLObject::loadFromXMI ()
#17 0x081c6980 in UMLDoc::loadUMLObjectsFromXMI ()
#18 0x081c669d in UMLDoc::loadUMLObjectsFromXMI ()
#19 0x081cbe6b in UMLDoc::loadFromXMI ()
#20 0x081c44c3 in UMLDoc::loadUndoData ()
#21 0x081b45d0 in UMLApp::slotEditUndo ()
#22 0x081b9797 in UMLApp::qt_invoke ()
#23 0xb700950d in QObject::activate_signal () from /opt/qt/lib/libqt-mt.so.3
#24 0xb700a08d in QObject::activate_signal () from /opt/qt/lib/libqt-mt.so.3
#25 0xb786f049 in KAction::activated () from /opt/kde/lib/libkdeui.so.4
#26 0xb78a69c2 in KAction::slotActivated () from /opt/kde/lib/libkdeui.so.4
#27 0xb7967171 in KAction::qt_invoke () from /opt/kde/lib/libkdeui.so.4
#28 0xb700950d in QObject::activate_signal () from /opt/qt/lib/libqt-mt.so.3
#29 0xb700a08d in QObject::activate_signal () from /opt/qt/lib/libqt-mt.so.3
#30 0xb75bfef9 in KAccelPrivate::menuItemActivated ()
   from /opt/kde/lib/libkdecore.so.4
#31 0xb760fc37 in KAccelPrivate::emitActivatedSignal ()
   from /opt/kde/lib/libkdecore.so.4
#32 0xb76a03b8 in KAccelPrivate::eventFilter ()
   from /opt/kde/lib/libkdecore.so.4
#33 0xb7008d2c in QObject::activate_filters () from /opt/qt/lib/libqt-mt.so.3
#34 0xb7008d9b in QObject::event () from /opt/qt/lib/libqt-mt.so.3
#35 0xb70417fc in QWidget::event () from /opt/qt/lib/libqt-mt.so.3
#36 0xb70f7a32 in QMainWindow::event () from /opt/qt/lib/libqt-mt.so.3
#37 0xb6fab8aa in QApplication::internalNotify ()
   from /opt/qt/lib/libqt-mt.so.3
#38 0xb6faca00 in QApplication::notify () from /opt/qt/lib/libqt-mt.so.3
#39 0xb76a61c2 in KApplication::notify () from /opt/kde/lib/libkdecore.so.4
#40 0xb761b1d7 in KAccelEventHandler::x11Event ()
   from /opt/kde/lib/libkdecore.so.4
#41 0xb76a464a in KApplication::x11EventFilter ()
   from /opt/kde/lib/libkdecore.so.4
#42 0xb6f3c7c5 in ?? () from /opt/qt/lib/libqt-mt.so.3
#43 0xbfc611b4 in ?? ()
#44 0xbfc610b8 in ?? ()
#45 0xb6f41ddb in QETWidget::translateKeyEventInternal ()
   from /opt/qt/lib/libqt-mt.so.3
#46 0xb6f4b2fe in QApplication::x11ProcessEvent ()
   from /opt/qt/lib/libqt-mt.so.3
#47 0xb6f5bf6d in QEventLoop::processEvents () from /opt/qt/lib/libqt-mt.so.3
#48 0xb6fc2060 in QEventLoop::enterLoop () from /opt/qt/lib/libqt-mt.so.3
#49 0xb6fc1ef6 in QEventLoop::exec () from /opt/qt/lib/libqt-mt.so.3
#50 0xb6fab4cf in QApplication::exec () from /opt/qt/lib/libqt-mt.so.3
#51 0x08180090 in main ()

Comment 1 Oliver Kellogg 2007-09-17 21:27:54 UTC

Caonnt confirm with current SVN branches/KDE/3.5/kdesdk/umbrello.

It would help if you could:
1) Describe the last few actions that you did before pressing Ctrl-Z
2) Invoke the "configure" script with --enable-debug=full
   so that we see line numbers in your backtrace

Thanks.

Comment 2 Jukka Rantanen 2008-07-24 09:33:57 UTC

I seem to be getting the same kind of crash with the same output, in Umbrello 1.5.8 (Using KDE 3.5.9-5.fc8) on Fedora 8.

The bug appears in every default view, when you
1) add a component, that does not show a dialog box (eg association, box etc...)
2) right click the view field, so the cursor returns to the "select" state
3) ctr-z to undo

Tried it about 10 times in different views, works every time.

Comment 3 Pedram GANJEH-HADIDI 2010-09-27 11:52:08 UTC

Umbrello crashes everytime when "undo- stack/array" is empty!

It definitely do not depend on kind of diagram, because I can reproduce the crash every time by: Class-, Use-Case-,..., and last but not least Entity-Relationship- Diagram!

It seems to me that the problem is a function call without checking if the data-structure (which contains the done last actions) has any elements, which produces a Null-Pointer-Exception/Error.

Regards