[konsole] [Bug 447478] New: Q_ASSERT crash in screen.cpp when trying to select, searching

[Martin Sandsmark]

https://bugs.kde.org/show_bug.cgi?id=447478

            Bug ID: 447478
           Summary: Q_ASSERT crash in screen.cpp when trying to select,
                    searching
           Product: konsole
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: martin.sandsmark at kde.org
  Target Milestone: ---

Crashing on Q_ASSERT(screenLine <= _screenLinesSize);

screenLine is 437, _screenLinesSize is 61, _columns is 113, the rest of the
useful are optimized out.

#0  0x00007f72f8d3cd22 in raise () at /usr/lib/libc.so.6
#1  0x00007f72f8d26862 in abort () at /usr/lib/libc.so.6
#2  0x00007f72f9172f26 in qt_assert(char const*, char const*, int) () at
/usr/lib/libQt5Core.so.5
#3  0x00007f72f9172f86 in qt_assert_x(char const*, char const*, char const*,
int) () at /usr/lib/libQt5Core.so.5
#4  0x00007f72fa5ab9b4 in Konsole::Screen::copyLineToStream(int, int, int,
Konsole::TerminalCharacterDecoder*, bool, bool,
QFlags<Konsole::Screen::DecodingOption>) const
    (this=<optimized out>, line=<optimized out>, start=90, count=1,
decoder=<optimized out>, appendNewLine=<optimized out>,
isBlockSelectionMode=false, options=...) at
/usr/src/debug/konsole/src/Screen.cpp:1543
#5  0x00007f72fa5d4884 in
Konsole::Screen::writeToStream(Konsole::TerminalCharacterDecoder*, int, int,
QFlags<Konsole::Screen::DecodingOption>) const
    (this=0x561ca8a084d0, decoder=0x7ffd7906a840, startIndex=<optimized out>,
endIndex=<optimized out>, options=...) at
/usr/src/debug/konsole/src/Screen.cpp:1454
#6  0x00007f72fa5d7ca2 in Konsole::Screen::text(int, int,
QFlags<Konsole::Screen::DecodingOption>) const (this=this at entry=0x561ca8a084d0,
startIndex=50262, endIndex=50262, options=options at entry=...)
    at /usr/src/debug/konsole/src/Screen.cpp:1421
#7  0x00007f72fa5d7e0b in
Konsole::Screen::selectedText(QFlags<Konsole::Screen::DecodingOption>) const
(this=0x561ca8a084d0, options=options at entry=...) at
/usr/src/debug/konsole/src/Screen.cpp:1402
#8  0x00007f72fa5c0c13 in Konsole::Emulation::checkSelectedText()
(this=0x561ca8a1af90) at /usr/include/qt/QtCore/qflags.h:121
#9  0x00007f72f938ead3 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007f72fa63037a in Konsole::TerminalDisplay::extendSelection(QPoint
const&) (this=this at entry=0x561ca89f07c0, position=...) at
/usr/src/debug/konsole/src/terminalDisplay/TerminalDisplay.cpp:1450
#11 0x00007f72fa63091e in
Konsole::TerminalDisplay::mouseMoveEvent(QMouseEvent*) (this=0x561ca89f07c0,
ev=0x7ffd7906b1a0) at
/usr/src/debug/konsole/src/terminalDisplay/TerminalDisplay.cpp:1299
#12 0x00007f72f9e7ea96 in QWidget::event(QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#13 0x00007f72f9e481a6 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#14 0x00007f72f9e4cfd7 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#15 0x00007f72f935df8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#16 0x00007f72f9e4b99f in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) ()
at /usr/lib/libQt5Widgets.so.5
#17 0x00007f72f9e9c837 in  () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f72f9e9e3dc in  () at /usr/lib/libQt5Widgets.so.5
#19 0x00007f72f9e481a6 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#20 0x00007f72f935df8a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#21 0x00007f72f97c7fa0 in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() at /usr/lib/libQt5Gui.so.5
#22 0x00007f72f97b35e5 in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() at /usr/lib/libQt5Gui.so.5
#23 0x00007f72f2d89daa in  () at /usr/lib/libQt5XcbQpa.so.5
#24 0x00007f72f935626b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#25 0x00007f72f93619b7 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#26 0x0000561ca776080b in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at /usr/src/debug/konsole/src/main.cpp:242


Seemingly same issue as https://bugs.kde.org/show_bug.cgi?id=440619#c2, which
seems to be happening when searching.

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