[unknown] [Bug 462405] New: subtitlecomposer crashes when choosing a different audio stream

[Franco Pellegrini]

https://bugs.kde.org/show_bug.cgi?id=462405

            Bug ID: 462405
           Summary: subtitlecomposer crashes when choosing a different
                    audio stream
    Classification: Miscellaneous
           Product: unknown
           Version: unspecified
          Platform: Neon
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: frapell at gmail.com
  Target Milestone: ---

Application: subtitlecomposer (0.7.1)

Qt Version: 5.15.7
Frameworks Version: 5.100.0
Operating System: Linux 5.15.0-53-generic x86_64
Windowing System: X11
Distribution: KDE neon 5.26
DrKonqi: 5.26.3 [KCrashBackend]

-- Information about the crash:
I don't know which debug symbols I need to install in order to get better stack
traces... for some reason the KDE Crash Handler fails to do so automatically.
In any case, the way to reproduce it is super easy:

1) open a subtitle file for a MKV video with multiple audio streams
2) Right-click the video
3) Under the "Audio Streams" menu, choose the second stream

After this, the program just crashes

The crash can be reproduced every time.

-- Backtrace:
Application: Subtitle Composer (subtitlecomposer), signal: Segmentation fault

[KCrash Handler]
#4  0x000055ac053473ae in SubtitleComposer::FFPlayer::activeAudioStream
(streamIndex=1, this=0x55ac076b1810) at
./src/videoplayer/backend/ffplayer.cpp:291
#5  SubtitleComposer::VideoPlayer::selectAudioStream (streamIndex=1,
this=0x55ac071f5b90) at ./src/videoplayer/videoplayer.cpp:204
#6  SubtitleComposer::VideoPlayer::selectAudioStream (this=0x55ac071f5b90,
streamIndex=1) at ./src/videoplayer/videoplayer.cpp:197
#7  0x00007f6bbe4330f4 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6bbf716735 in KSelectAction::indexTriggered(int) () from
/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#9  0x00007f6bbe4330f4 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f6bbf716795 in KSelectAction::triggered(int) () from
/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#11 0x00007f6bbf71ae6a in KSelectAction::actionTriggered(QAction*) () from
/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#12 0x00007f6bbe4330f4 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f6bbeff6b53 in QActionGroup::triggered(QAction*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f6bbe433128 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f6bbeff2c56 in QAction::triggered(bool) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f6bbeff594c in QAction::activate(QAction::ActionEvent) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f6bbf181902 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f6bbf1894d9 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f6bbf03c87e in QWidget::event(QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f6bbeff9763 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f6bbf0013a4 in QApplication::notify(QObject*, QEvent*) () from
/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f6bbe3fb09a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f6bbefffe87 in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) ()
from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f6bbf056c13 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f6bbf0593a5 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f6bbeff9763 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f6bbe3fb09a in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f6bbe8eea87 in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
() from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#29 0x00007f6bbe8c2a6c in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
() from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#30 0x00007f6bb24e6c8e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#31 0x00007f6bbaed5d1b in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f6bbaf2a6f8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f6bbaed33c3 in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f6bbe454af8 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f6bbe3f99bb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f6bbe401f54 in QCoreApplication::exec() () from
/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x000055ac052b9af7 in main (argc=<optimized out>, argv=<optimized out>) at
./src/main.cpp:239
[Inferior 1 (process 11883) detached]

Reported using DrKonqi

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