[Bug 292966] New: kompare crash when comparing 2 large text files from Dolphin

Peter Schübel peter.schuebel at gmx.de
Tue Jan 31 14:54:34 UTC 2012 

https://bugs.kde.org/show_bug.cgi?id=292966

           Summary: kompare crash when comparing 2 large text files from
                    Dolphin
           Product: kompare
           Version: unspecified
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kompare-devel at kde.org
        ReportedBy: peter.schuebel at gmx.de


Application: kompare (4.0.1)
KDE Platform Version: 4.7.4 (4.7.4)
Qt Version: 4.7.4
Operating System: Linux 2.6.37.6-0.11-default x86_64
Distribution: "openSUSE 11.4 (x86_64)"

-- Information about the crash:
- What I was doing when the application crashed:

I tried to compare two large text files (8.6MB each). Kompare was not running.
I selected both files (from same folder) in Dolphin and clicked on the
"kompare" icon in the Dolphin toolbar. Kompare started and briefly showed an
empty window (as it does if the comparison calculation takes a while), but it
crashed in less than a second.
The files have 128 lines with each line having around 60,000 characters (or
more). That may probably be a bit too much for kompare...(?).

The crash can be reproduced every time.

-- Backtrace:
Application: Kompare (kompare), signal: Segmentation fault
[KCrash Handler]
#6  0x00007f3241253aad in setContent (this=0x7ffffaeb1bf0, sequences=<value
optimized out>) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/levenshteintable.h:109
#7  Diff2::LevenshteinTable<Diff2::DifferenceStringPair>::createTable
(this=0x7ffffaeb1bf0, sequences=<value optimized out>) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/levenshteintable.h:164
#8  0x00007f3241253473 in Diff2::Difference::determineInlineDifferences
(this=0x93b130) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/difference.cpp:118
#9  0x00007f3241257848 in Diff2::ParserBase::parseUnifiedHunkBody
(this=0x85c920) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/parserbase.cpp:628
#10 0x00007f3241257cc4 in Diff2::ParserBase::parseUnified (this=0x85c920) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/parserbase.cpp:754
#11 0x00007f3241257124 in Diff2::ParserBase::parse (this=0x85c920,
malformed=0x7ffffaeb213f) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/parserbase.cpp:105
#12 0x00007f3241254fb8 in Diff2::Parser::parse (this=0x8cacd0, diffLines=...,
malformed=0x7ffffaeb213f) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/parser.cpp:92
#13 0x00007f324124aa82 in Diff2::KompareModelList::parseDiffOutput
(this=0x9734f0, diff=<value optimized out>) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/komparemodellist.cpp:920
#14 0x00007f324124d442 in Diff2::KompareModelList::slotDiffProcessFinished
(this=0x9734f0, success=<value optimized out>) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/komparemodellist.cpp:483
#15 0x00007f324124d96f in Diff2::KompareModelList::qt_metacall (this=0x9734f0,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffffaeb2330)
at /usr/src/debug/kdesdk-4.7.4/build/kompare/libdiff2/komparemodellist.moc:150
#16 0x00007f324e58fe8f in QMetaObject::activate (sender=0x845410, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7ffffaeb2330)
at kernel/qobject.cpp:3287
#17 0x00007f3241244eaf in KompareProcess::diffHasFinished (this=<value
optimized out>, _t1=true) at
/usr/src/debug/kdesdk-4.7.4/build/kompare/libdiff2/kompareprocess.moc:92
#18 0x00007f3241244ffc in KompareProcess::slotFinished (this=0x845410,
exitCode=1, exitStatus=QProcess::NormalExit) at
/usr/src/debug/kdesdk-4.7.4/kompare/libdiff2/kompareprocess.cpp:279
#19 0x00007f324124519d in KompareProcess::qt_metacall (this=0x845410,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffffaeb2520)
at /usr/src/debug/kdesdk-4.7.4/build/kompare/libdiff2/kompareprocess.moc:80
#20 0x00007f324e58fe8f in QMetaObject::activate (sender=0x845410, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7ffffaeb2520)
at kernel/qobject.cpp:3287
#21 0x00007f324e518ddf in QProcess::finished (this=<value optimized out>,
_t1=1, _t2=QProcess::NormalExit) at .moc/release-shared/moc_qprocess.cpp:142
#22 0x00007f324e51dd57 in QProcessPrivate::_q_processDied (this=0x7ed630) at
io/qprocess.cpp:1051
#23 0x00007f324e51de29 in QProcess::qt_metacall (this=0x845410,
_c=QMetaObject::InvokeMetaMethod, _id=13, _a=0x7ffffaeb26f0) at
.moc/release-shared/moc_qprocess.cpp:115
#24 0x00007f324e9ce388 in KProcess::qt_metacall (this=0x845410,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value
optimized out>) at /usr/src/debug/kdelibs-4.7.4/build/kdecore/kprocess.moc:69
#25 0x00007f3241245140 in KompareProcess::qt_metacall (this=0x845410,
_c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7ffffaeb26f0)
at /usr/src/debug/kdesdk-4.7.4/build/kompare/libdiff2/kompareprocess.moc:74
#26 0x00007f324e58fe8f in QMetaObject::activate (sender=0x84bfd0, m=<value
optimized out>, local_signal_index=<value optimized out>, argv=0x7ffffaeb26f0)
at kernel/qobject.cpp:3287
#27 0x00007f324e5d8a5e in QSocketNotifier::activated (this=<value optimized
out>, _t1=21) at .moc/release-shared/moc_qsocketnotifier.cpp:89
#28 0x00007f324e5966db in QSocketNotifier::event (this=0x84bfd0,
e=0x7ffffaeb2da0) at kernel/qsocketnotifier.cpp:317
#29 0x00007f324ef532c4 in QApplicationPrivate::notify_helper (this=0x642f30,
receiver=0x84bfd0, e=0x7ffffaeb2da0) at kernel/qapplication.cpp:4481
#30 0x00007f324ef5b87a in QApplication::notify (this=<value optimized out>,
receiver=0x84bfd0, e=0x7ffffaeb2da0) at kernel/qapplication.cpp:4360
#31 0x00007f324fc6ae36 in KApplication::notify (this=0x7ffffaeb32e0,
receiver=0x84bfd0, event=0x7ffffaeb2da0) at
/usr/src/debug/kdelibs-4.7.4/kdeui/kernel/kapplication.cpp:311
#32 0x00007f324e57b7cc in QCoreApplication::notifyInternal
(this=0x7ffffaeb32e0, receiver=0x84bfd0, event=0x7ffffaeb2da0) at
kernel/qcoreapplication.cpp:787
#33 0x00007f324e5a5fb9 in sendEvent (source=0x640f40) at
kernel/qcoreapplication.h:215
#34 socketNotifierSourceDispatch (source=0x640f40) at
kernel/qeventdispatcher_glib.cpp:110
#35 0x00007f324a720bd3 in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
#36 0x00007f324a7213b0 in ?? () from /lib64/libglib-2.0.so.0
#37 0x00007f324a721650 in g_main_context_iteration () from
/lib64/libglib-2.0.so.0
#38 0x00007f324e5a65df in QEventDispatcherGlib::processEvents (this=0x61fef0,
flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#39 0x00007f324eff941e in QGuiEventDispatcherGlib::processEvents (this=<value
optimized out>, flags=<value optimized out>) at
kernel/qguieventdispatcher_glib.cpp:204
#40 0x00007f324e57ac22 in QEventLoop::processEvents (this=<value optimized
out>, flags=...) at kernel/qeventloop.cpp:149
#41 0x00007f324e57ae35 in QEventLoop::exec (this=0x7ffffaeb2ff0, flags=...) at
kernel/qeventloop.cpp:201
#42 0x00007f324e57f27b in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1064
#43 0x000000000040a452 in main (argc=-85249232, argv=0x7ffffaeb3ba8) at
/usr/src/debug/kdesdk-4.7.4/kompare/main.cpp:228

Reported using DrKonqi

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