[Bug 53575] New: Autoproject part crashes invoking the "add files to target" dialog

Hamish Rodda meddie at yoyo.its.monash.edu.au
Wed Jan 29 13:24:02 UTC 2003 

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http://bugs.kde.org/show_bug.cgi?id=53575     
           Summary: Autoproject part crashes invoking the "add files to
                    target" dialog
           Product: kdevelop
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: crash
          Priority: NOR
         Component: gideon
        AssignedTo: kdevelop-devel at kdevelop.org
        ReportedBy: meddie at yoyo.its.monash.edu.au


Version:            (using KDE Devel)
Installed from:    Compiled sources
Compiler:          gcc 2.95 (debian)
OS:          Linux

Upon invoking the "add files" action on a target in the automake part, gideon will most likely crash on my computer.  This appears to be due to KDirWatch, but I'm submitting it here first just in case someone can do a better interpretation than I.

The backtrace:
[New Thread 16384 (LWP 2218)]
0x41533a39 in wait4 () from /lib/libc.so.6
#0  0x41533a39 in wait4 () from /lib/libc.so.6
#1  0x415a6ba0 in sys_sigabbrev () from /lib/libc.so.6
#2  0x413c9061 in waitpid () from /lib/libpthread.so.0
#3  0x40ba247a in KCrash::defaultCrashHandler (sig=11) at kcrash.cpp:235
#4  0x414c0898 in sigaction () from /lib/libc.so.6
#5  0x41106d0a in QString::operator+= () from /usr/lib/libqt-mt.so.3
#6  0x407471ed in KDirWatchPrivate::removeEntry (this=0x824fd68, instance=0x0,
    _path=@0x873328c, sub_entry=0x0) at ../../kdecore/kdebug.h:178
#7  0x40749114 in KDirWatchPrivate::slotRemoveDelayed (this=0x824fd68)
    at kdirwatch.cpp:939
#8  0x4074c8a9 in KDirWatchPrivate::qt_invoke (this=0x824fd68, _id=5, 
    _o=0xbfffed30) at kdirwatch_p.moc:91
#9  0x40ee7a59 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#10 0x41147d53 in QSignal::signal () from /usr/lib/libqt-mt.so.3
#11 0x40efd105 in QSignal::activate () from /usr/lib/libqt-mt.so.3
#12 0x40f02583 in QSingleShotTimer::event () from /usr/lib/libqt-mt.so.3
#13 0x40e95a93 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#14 0x40e95894 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#15 0x40b1fb3a in KApplication::notify (this=0xbffff990, receiver=0x848ae00,
    event=0xbfffefa4) at kapplication.cpp:454
#16 0x40e78303 in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#17 0x40e5a33c in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#18 0x40ea71fe in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#19 0x40e95c4a in QApplication::enter_loop () from /usr/lib/libqt-mt.so.3
#20 0x4100f4f1 in QDialog::exec () from /usr/lib/libqt-mt.so.3
#21 0x41c37c0b in AutoProjectWidget::slotAddExistingFile (this=0x843c5a0)
    at autoprojectwidget.cpp:879
#22 0x41c3d979 in AutoProjectWidget::qt_invoke (this=0x843c5a0, _id=59,
    _o=0xbffff334) at autoprojectwidget.moc:153
#23 0x40ee7a59 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#24 0x40ee799e in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#25 0x4114ef10 in QButton::clicked () from /usr/lib/libqt-mt.so.3
#26 0x40f52d47 in QButton::mouseReleaseEvent () from /usr/lib/libqt-mt.so.3
#27 0x40f122a6 in QWidget::event () from /usr/lib/libqt-mt.so.3
#28 0x40e95a93 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#29 0x40e9553b in QApplication::notify () from /usr/lib/libqt-mt.so.3
#30 0x40b1fb3a in KApplication::notify (this=0xbffff990, receiver=0x844a9c8, 
    event=0xbffff5ec) at kapplication.cpp:454
#31 0x40e4a624 in QETWidget::translateMouseEvent () from /usr/lib/libqt-mt.so.3
#32 0x40e48918 in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#33 0x40e59e02 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#34 0x40ea71fe in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#35 0x40ea715b in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#36 0x40e95bea in QApplication::exec () from /usr/lib/libqt-mt.so.3
#37 0x08064649 in main (argc=7, argv=0xbffffaf4) at main.cpp:78

I have determined that the dialog is in the process of being created when it crashes (indeed you see a flicker of the dialog on the screen before it disappears).  The one time it worked for me while testing some potential fixes, I got the following warning:

kio (KDirWatch): WARNING: KDirWatch::removeDir can't handle '???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

So, KDirWatch seems to be getting some bad info somewhere.  (I'd like to valgrind this but my valgrind says it can't handle signal 252, I think my glibc is too new).  Here's a more complete debug log from the KDir* stuff from just before the crash:

kio (KDirLister): +KDirLister
kio (KDirLister): [bool KDirLister::openURL(const KURL &, bool = false, bool = false)] file:/opt/kde/kdevelop/parts/autoproject/ keep=false reload=false
kio (KDirListerCache): [void KDirListerCache::listDir(KDirLister *, const KURL &, bool, bool)] 0x873c740 url=file:/opt/kde/kdevelop/parts/autoproject keep=false reload=false
kio (KDirListerCache): [void KDirListerCache::stop(KDirLister *)] lister: 0x873c740
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *)] 0x873c740
kio (KDirListerCache): listDir: Entry in cache: file:/opt/kde/kdevelop/parts/autoproject
kio (KDirWatch): Cancelled FAM (Req 1) for /opt/kde/kdevelop/parts/autoproject
kio (KDirWatch): Removed Dir /opt/kde/kdevelop/parts/autoproject [KDirWatch-1]
kio (KDirWatch): Added Dir /opt/kde/kdevelop/parts/autoproject [KDirWatch-1]
kio (KDirWatch):  Setup FAM (Req 12) for /opt/kde/kdevelop/parts/autoproject
kio (KDirLister): [bool KDirLister::openURL(const KURL &, bool = false, bool = false)] file:/opt/kde/kdevelop/parts/autoproject/ keep=false reload=true
kio (KDirListerCache): [void KDirListerCache::listDir(KDirLister *, const KURL &, bool, bool)] 0x873c740 url=file:/opt/kde/kdevelop/parts/autoproject keep=false reload=true
kio (KDirListerCache): [void KDirListerCache::stop(KDirLister *)] lister: 0x873c740
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *)] 0x873c740
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *, const KURL &, bool)] 0x873c740 url: file:/opt/kde/kdevelop/parts/autoproject
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *, const KURL &, bool)] 0x873c740 item moved into cache: file:/opt/kde/kdevelop/parts/autoproject
kio (KDirListerCache): listDir: Entry not in cache or reloaded: file:/opt/kde/kdevelop/parts/autoproject
kio (KDirWatch): Added already watched Entry /opt/kde/kdevelop/parts/autoproject (now 1 clients) [KDirWatch-1]
kio (KDirLister): [bool KDirLister::openURL(const KURL &, bool = false, bool = false)] file:/home/hamish/source/med/src/communications/protocols/high-level/hl7/ keep=false reload=false
kio (KDirListerCache): [void KDirListerCache::listDir(KDirLister *, const KURL &, bool, bool)] 0x873c740 url=file:/home/hamish/source/med/src/communications/protocols/high-level/hl7 keep=false reload=false
kio (KDirListerCache): [void KDirListerCache::stop(KDirLister *)] lister: 0x873c740
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *)] 0x873c740
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *, const KURL &, bool)] 0x873c740 url: file:/opt/kde/kdevelop/parts/autoproject
kio (KDirListerCache): listDir: Entry not in cache or reloaded: file:/home/hamish/source/med/src/communications/protocols/high-level/hl7
kio (KDirWatch): Added Dir /home/hamish/source/med/src/communications/protocols/high-level/hl7 [KDirWatch-1]
kio (KDirWatch):  Setup FAM (Req 13) for /home/hamish/source/med/src/communications/protocols/high-level/hl7
kio (KDirWatch): Cancelled FAM (Req 12) for /opt/kde/kdevelop/parts/autoproject
kio (KDirWatch): Removed Dir /opt/kde/kdevelop/parts/autoproject

So, is this not the automake part's fault? Can I reassign this to kio?

Thanks,
Hamish.

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