Segfault when canceling CSV import

[agoessling]

Problem description

When importing large CSV files and cancel is clicked on the progress modal a segfault occurs.

Steps to reproduce (important)

On Ubuntu 20.04.3 LTS with 3959575 hash

1. Open CSV file.
2. During import progress modal select "Cancel"
3. Segfault occurs.

Note, you can use the spacebar to select "Cancel" quickly when the modal appears.

CSV_1.csv

Loading compatible plugins from directory:  "/usr/local/bin"
"libDataLoadCSV.so is a DataLoader plugin"
"libDataLoadULog.so is a DataLoader plugin"
"libDataStreamSample.so is a DataStreamer plugin"  ...disabled, unless option -t is used
"libDataStreamUDP.so is a DataStreamer plugin"
"libDataStreamWebSocket.so is a DataStreamer plugin"
"libProtobufParser.so is a MessageParser plugin"
"libPublisherCSV.so is a StatePublisher plugin"
Type conversion already registered from type QString to type QwtText
"libToolboxFFT.so is a MessageParser plugin"
Type conversion already registered from type QString to type QwtText
"libToolboxQuaternion.so is a MessageParser plugin"
Number of plugins loaded:  8 

Loading compatible plugins from directory:  "/home/agoessling/.local/share/PlotJuggler"
Number of plugins loaded:  0 

Stack trace (most recent call last):
#31   Object "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x7fa26f004115, in QCoreApplication::exec()
#30   Object "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x7fa26effc3aa, in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
#29   Object "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x7fa26f055434, in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
#28   Object "/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0", at 0x7fa26dfc64a2, in g_main_context_iteration
#27   Object "/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0", at 0x7fa26dfc63ff, in 
#26   Object "/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0", at 0x7fa26dfc617c, in g_main_context_dispatch
#25   Object "/usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5", at 0x7fa26b25e32d, in 
#24   Object "/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5", at 0x7fa26f3c235a, in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
#23   Object "/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5", at 0x7fa26f3e810a, in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
#22   Object "/usr/lib/x86_64-linux-gnu/libQt5Gui.so.5", at 0x7fa26f3e67d2, in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
#21   Object "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x7fa26effd809, in QCoreApplication::notifyInternal2(QObject*, QEvent*)
#20   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa210ef, in QApplication::notify(QObject*, QEvent*)
#19   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa17a65, in QApplicationPrivate::notify_helper(QObject*, QEvent*)
#18   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa791eb, in 
#17   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa7635c, in 
#16   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa20456, in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool)
#15   Object "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x7fa26effd809, in QCoreApplication::notifyInternal2(QObject*, QEvent*)
#14   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa21342, in QApplication::notify(QObject*, QEvent*)
#13   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa17a65, in QApplicationPrivate::notify_helper(QObject*, QEvent*)
#12   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fa5a2b5, in QWidget::event(QEvent*)
#11   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fb0e034, in QAbstractButton::mouseReleaseEvent(QMouseEvent*)
#10   Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fb0de72, in 
#9    Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fb0ca2d, in 
#8    Object "/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5", at 0x7fa26fb0c805, in QAbstractButton::clicked(bool)
#7    Object "/usr/lib/x86_64-linux-gnu/libQt5Core.so.5", at 0x7fa26f02928b, in QMetaObject::activate(QObject*, int, int, void**)
#6    Object "plotjuggler", at 0x55da16f337d9, in 
#5    Object "plotjuggler", at 0x55da16f32625, in 
#4    Object "plotjuggler", at 0x55da16f6fa25, in 
#3    Object "plotjuggler", at 0x55da16f67e26, in 
#2    Object "plotjuggler", at 0x55da16f61125, in 
#1    Object "/usr/local/bin/libDataLoadCSV.so", at 0x7fa260ad03d8, in DataLoadCSV::readDataFromFile(PJ::FileLoadInfo*, PJ::PlotDataMapRef&)
#0    Object "/usr/local/bin/libDataLoadCSV.so", at 0x7fa260ad4731, in std::_Hashtable<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, PJ::StringSeries>, std::allocator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char
>, std::allocator<char> > const, PJ::StringSeries> >, std::__detail::_Select1st, std::equal_to<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::hash<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prim
e_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >::erase(std::__detail::_Node_const_iterator<std::pair<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const, PJ::StringSeries>, false, true>)
Segmentation fault (Address not mapped to object [0x168])
Segmentation fault (core dumped)