[Bug 281238] New: Kompare crashes opening files over 500MB

[jelizondob at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=281238

           Summary: Kompare crashes opening files over 500MB
           Product: kompare
           Version: 4.0.0
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kompare-devel at kde.org
        ReportedBy: jelizondob at gmail.com


Application: kompare (4.0.0)
KDE Platform Version: 4.4.5 (KDE 4.4.5)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-33-generic-pae i686
Distribution: Ubuntu 10.04.3 LTS

-- Information about the crash:
It crashed comparing two files, one 500MB and the other 593MB. It also crashed
opening a diff file of 593.9MB

The crash can be reproduced every time.

 -- Backtrace:
Application: Kompare (kompare), signal: Aborted
[KCrash Handler]
#6  0xb785a430 in __kernel_vsyscall ()
#7  0xb5d1e651 in *__GI_raise (sig=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:64
#8  0xb5d21a82 in *__GI_abort () at abort.c:92
#9  0xb5f2552f in __gnu_cxx::__verbose_terminate_handler() () from
/usr/lib/libstdc++.so.6
#10 0xb5f23465 in ?? () from /usr/lib/libstdc++.so.6
#11 0xb5f234a2 in std::terminate() () from /usr/lib/libstdc++.so.6
#12 0xb5f235e1 in __cxa_throw () from /usr/lib/libstdc++.so.6
#13 0xb5fb8b15 in qBadAlloc () at global/qglobal.cpp:2004
#14 0xb600c9f8 in q_check_ptr<void> (this=0x994a43c, alloc=1073741823) at
../../include/QtCore/../../src/corelib/global/qglobal.h:1697
#15 QString::realloc (this=0x994a43c, alloc=1073741823) at
tools/qstring.cpp:1242
#16 0xb600cfb7 in QString::append (this=0x994a43c, str=...) at
tools/qstring.cpp:1456
#17 0xb6063b29 in QString::operator+= (this=0x994a3d0, maxBytes=-1) at
../../include/QtCore/../../src/corelib/tools/qstring.h:269
#18 QTextStreamPrivate::fillReadBuffer (this=0x994a3d0, maxBytes=-1) at
io/qtextstream.cpp:588
#19 0xb6065e2b in QTextStreamPrivate::read (this=0x994a3d0, maxlen=2147483647)
at io/qtextstream.cpp:715
#20 0xb606612b in QTextStream::readAll (this=0xbf832624) at
io/qtextstream.cpp:1635
#21 0xb27e488b in QTextStream::read (this=0x98e8b28, fileName=...) at
/usr/include/qt4/QtCore/qtextstream.h:248
#22 Diff2::KompareModelList::readFile (this=0x98e8b28, fileName=...) at
../../../kompare/libdiff2/komparemodellist.cpp:535
#23 0xb27eb10e in Diff2::KompareModelList::openDiff (this=0x98e8b28,
diffFile=...) at ../../../kompare/libdiff2/komparemodellist.cpp:549
#24 0xb2818277 in KomparePart::openDiff (this=0x97e80d8, url=...) at
../../../kompare/komparepart/kompare_part.cpp:224
#25 0x08052c9e in KompareShell::openDiff (this=0x97a2408, url=...) at
../../kompare/kompare_shell.cpp:211
#26 0x0805129d in main (argc=5, argv=0xbf832bf4) at ../../kompare/main.cpp:124

Reported using DrKonqi

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