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moose@natasha ~/build/ktorrent $ gdb /usr/bin/ktorrent
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(gdb) run --nofork --nocrashhandler
Starting program: /usr/bin/ktorrent --nofork --nocrashhandler

Program received signal SIGSEGV, Segmentation fault.
0x0806c132 in QString::unicode (this=0x3) at qstring.h:653
653         const QChar* unicode() const { return d->unicode; }
(gdb) bt
#0  0x0806c132 in QString::unicode (this=0x3) at qstring.h:653
#1  0x0806c14b in QString::isNull (this=0x3) at qstring.h:874
#2  0x08065ad0 in KTorrent::addToolWidget (this=0x81a9b80, w=0x83d02b8, icon=@0x3, caption=@0x0, dock=kt::GUIInterface::DOCK_BOTTOM) at ktorrent.cpp:773
#3  0x080653b5 in KTorrent::addWidgetBelowView (this=0x81a9b80, w=0x83d02b8, icon=@0x3, caption=@0x0) at ktorrent.cpp:760
#4  0xb63ad0d3 in kt::InfoWidgetPlugin::load (this=0x8397ab0) at infowidgetplugin.cpp:59
#5  0xb7def8de in kt::PluginManager::load (this=0x8351080, name=@0x8397adc) at pluginmanager.cpp:90
#6  0xb7defe55 in kt::PluginManager::loadPluginList (this=0x8351080) at pluginmanager.cpp:75
#7  0x08081243 in KTorrentCore::loadPlugins (this=0x8350ac8) at ktorrentcore.cpp:127
#8  0x0806ab9a in KTorrent (this=0x81a9b80) at ktorrent.cpp:184
#9  0x08087953 in KTorrentApp::newInstance (this=0xbf822340) at ktorrentapp.cpp:66
#10 0xb768c351 in KUniqueApplication::newInstanceNoFork () from /usr/kde/3.5/lib/libkdecore.so.4
#11 0xbf822340 in ?? ()
#12 0xb7f7b720 in _dl_make_stack_executable () from /lib/ld-linux.so.2
#13 0xb768cef8 in KUniqueApplication::qt_invoke () from /usr/kde/3.5/lib/libkdecore.so.4
#14 0xbf822340 in ?? ()
#15 0xb7f7b720 in _dl_make_stack_executable () from /lib/ld-linux.so.2
#16 0x080874f5 in KTorrentApp::qt_invoke (this=0xbf822340, _id=19, _o=0xbf821e84) at ktorrentapp.moc:77
#17 0xb70bbe19 in QObject::activate_signal () from /usr/qt/3/lib/libqt-mt.so.3
#18 0xb73ef2be in QSignal::signal () from /usr/qt/3/lib/libqt-mt.so.3
#19 0xb70d78dd in QSignal::activate () from /usr/qt/3/lib/libqt-mt.so.3
#20 0xb70deb83 in QSingleShotTimer::event () from /usr/qt/3/lib/libqt-mt.so.3
#21 0xb705d0da in QApplication::internalNotify () from /usr/qt/3/lib/libqt-mt.so.3
#22 0xb705db5f in QApplication::notify () from /usr/qt/3/lib/libqt-mt.so.3
#23 0xb75d81ca in KApplication::notify () from /usr/kde/3.5/lib/libkdecore.so.4
#24 0xbf822340 in ?? ()
#25 0x08196630 in ?? ()
#26 0xbf822124 in ?? ()
#27 0xb6e04019 in operator new () from /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/libstdc++.so.6
Previous frame inner to this frame (corrupt stack?)
(gdb)


ktorrent was working fine with 3.5.4. Once I restarted into 3.5.5, ktorrent crashes on start. Even after I've moved my config, and ktorrent tmp dir out of the way.

This is mu build command:
svn up && make clean && make -f Makefile.cvs && ./configure --enable-geoip --prefix=/usr --enable-new-ldflags --enable-debug=full && make -j5 && sudo make install && sudo ldconfig

I'm using gcc 4.1.1, kde 3.5.5, glibc 2.4, Qt 3.3.6, gentoo 2006.1.

I've rebuilt ktorrent from scratch a couple times, nothing seems to help.

#3 0x080653b5 in KTorrent::addWidgetBelowView (this=0x81a9b80, w=0x83d02b8, icon=@0x3, caption=@0x0) at ktorrent.cpp:760
#4 0xb63ad0d3 in kt::InfoWidgetPlugin::load (this=0x8397ab0) at infowidgetplugin.cpp:59

This is impossible, InfoWidgetPlugin::load does not call addWidgetBelowView

Do you have old plugins lying around on your harddisk somewhere ?

After "make uninstall"ing? I doubt it.....

Yet I did, though in KDE's lib dir, and they were there in 3.5.4, so I don't see why it picks a kde rebuild to start crashing.

Alright, now that its started, all the torrents were stopped, and a few of them "lost" all of the previously downloaded data, at least till a data check is done. IMO, if theres a crash, force all torrents to do a check once they are started (for download).