Bug 212866

(In reply to comment #0)
> Application that crashed: kmail
> Version of the application: 1.12.2
> KDE Version: 4.3.2 (KDE 4.3.2)
> Qt Version: 4.6.0
> Operating System: Linux 2.6.30.9-90.fc11.x86_64 x86_64

@rdieter: Does Fedora 11 really ships KDE 4.3.2 with an unreleased Qt ?

No, qt-4.6.0 installed from kde-unstable repo

ok. Please fix your installation.

I don't understand what I should fix? 
everything is working good, except this crash

Christophe's asserting that debugging/diagnosing this using a non-final version of qt is likely not productive (and I partly agree).

What would be more fruitful is if you could reproduce this against stock/released versions of qt/kde.  If so, then please do re-open this.

hm, it sounds strange for me. 
what for are we testing pre released soft? 
ok, I'll check it when qt-4.6 will be released.
thank you.

The problem is that you use a KDE package which was built with a Qt version different than the one you installed.

Here's a simple example of the possible side effects: https://bugs.kde.org/212710

This is a korganizer report from a user who was using some packages linked against Qt 4.5.2 and had Qt 4.6.0tp1 installed.

After fixing his installation, the bug was gone.


Using Qt 4.5.3 instead of 4.5.2 would be harmless since it's only a patch level update.

Using Qt 4.6.0 instead of 4.5.x may have unexpected effects since it's a minor version update.

Well, while we also don't really support this combination in Fedora (the repository the reporter used is called "unstable" for a reason), it's still a bug somewhere if this doesn't work, as Qt is supposed to be backwards-compatible!

Mh... bug 218874 seems to be related to this but with Qt 4.5.2...

Ok, now I have the same crash and there is no relation with binary compatability to qt-4.6, because now I use QT from stable repo 
qt-4.5.3-9.fc11.x86_64
kdebase-4.3.4-1.fc11.x86_64
kdepim-4.3.4-2.fc11.x86_64

Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f303dc3f631 in KMail::MessageListView::Widget::viewStartDragRequest (this=<value optimized out>) at /usr/src/debug/kdepim-4.3.4/kmail/messagelistview/widget.cpp:776
#6  0x00007f303dc893d5 in KMail::MessageListView::Core::View::mouseMoveEvent (this=0x1725e30, e=<value optimized out>) at /usr/src/debug/kdepim-4.3.4/kmail/messagelistview/core/view.cpp:2074
#7  0x0000003ece1ddc0a in QWidget::event (this=0x1725e30, event=0x7fffae8507d0) at kernel/qwidget.cpp:7539
#8  0x0000003ece535986 in QFrame::event (this=0x1725e30, e=0x7fffae8507d0) at widgets/qframe.cpp:559
#9  0x0000003ece666a6b in QAbstractItemView::viewportEvent (this=0x1725e30, event=0x7fffae8507d0) at itemviews/qabstractitemview.cpp:1476
#10 0x0000003ece69d990 in QTreeView::viewportEvent (this=0x1725e30, event=0x7fffae8507d0) at itemviews/qtreeview.cpp:1266
#11 0x000000362893dec7 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x168ddf0, event=0x7fffae8507d0) at kernel/qcoreapplication.cpp:726
#12 0x0000003ece18f60c in QApplicationPrivate::notify_helper (this=0x11dbc30, receiver=0x168ddf0, e=0x7fffae8507d0) at kernel/qapplication.cpp:4061
#13 0x0000003ece1966e1 in QApplication::notify (this=<value optimized out>, receiver=0x168ddf0, e=0x7fffae8507d0) at kernel/qapplication.cpp:3767
#14 0x0000003432a11bd6 in KApplication::notify (this=0x7fffae8527e0, receiver=0x168ddf0, event=0x7fffae8507d0) at /usr/src/debug/kdelibs-4.3.4/kdeui/kernel/kapplication.cpp:302
#15 0x000000362893ebac in QCoreApplication::notifyInternal (this=0x7fffae8527e0, receiver=0x168ddf0, event=0x7fffae8507d0) at kernel/qcoreapplication.cpp:610
#16 0x0000003ece195fd0 in QCoreApplication::sendSpontaneousEvent (event=<value optimized out>, receiver=<value optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:216
#17 QApplicationPrivate::sendMouseEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qapplication.cpp:2924
#18 0x0000003ece1fba7e in QETWidget::translateMouseEvent (this=0x165e4c0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4408
#19 0x0000003ece1fab38 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fffae852300) at kernel/qapplication_x11.cpp:3549
#20 0x0000003ece22287c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#21 0x00000030f763790e in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#22 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#23 0x00000030f763b0e8 in g_main_context_iterate (context=0x11d5520, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2455
#24 0x00000030f763b20a in IA__g_main_context_iteration (context=0x11d5520, may_block=1) at gmain.c:2518
#25 0x0000003628966f36 in QEventDispatcherGlib::processEvents (this=0x119e770, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#26 0x0000003ece22202e in QGuiEventDispatcherGlib::processEvents (this=0x0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#27 0x000000362893d4b2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 36}) at kernel/qeventloop.cpp:149
#28 0x000000362893d884 in QEventLoop::exec (this=0x7fffae852630, flags={i = 0}) at kernel/qeventloop.cpp:201
#29 0x000000362893fa19 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#30 0x0000000000402e69 in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdepim-4.3.4/kmail/main.cpp:146
Warning: the current language does not match this frame.

What I was doing when the application crashed:
select all messages in "Searches" subfolder "asio" (created by filtering keyword on mailing list) folder and start to drag them to persistent folder

*** Bug 212190 has been marked as a duplicate of this bug. ***

*** Bug 218874 has been marked as a duplicate of this bug. ***

*** Bug 263066 has been marked as a duplicate of this bug. ***

Thank you for your report. Kmail1 is currently unmaintained and the code has changed sufficiently in Kmail2 so the backtraces are not really useful anymore. Should you experience the same crash in Kmail 4.8.5 or later, please open a new report for Kmail2. Thank you for your understanding