Invalid read of size 4
  in main::{lambda()#2}::operator()() const in /home/nkrupenko/Development/PersistentIndex_Crash/main.cpp:54
  1: QAbstractItemModelPrivate::rowsRemoved(QModelIndex const&, int, int) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  2: QAbstractItemModel::endRemoveRows() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  3: QStandardItem::removeRows(int, int) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  4: QStandardItemModel::removeRows(int, int, QModelIndex const&) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  5: main::{lambda()#2}::operator()() const in /home/nkrupenko/Development/PersistentIndex_Crash/main.cpp:54
  6: QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, main::{lambda()#2}>::call({lambda()#2}&, void**) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:146
  7: void QtPrivate::Functor<main::{lambda()#2}, 0>::call<QtPrivate::List<>, void>({lambda()#2}&, void*, {lambda()#2}&*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:256
  8: QtPrivate::QFunctorSlotObject<main::{lambda()#2}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:439
  9: QMetaObject::activate(QObject*, int, int, void**) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  10: QAbstractButton::clicked(bool) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  11: QAbstractButtonPrivate::emitClicked() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  12: QAbstractButtonPrivate::click() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  13: QAbstractButton::mouseReleaseEvent(QMouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  14: QWidget::event(QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  15: QApplicationPrivate::notify_helper(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  16: QApplication::notify(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  17: QCoreApplication::notifyInternal2(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  18: QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  19: QWidgetWindow::handleMouseEvent(QMouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  20: QWidgetWindow::event(QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  21: QApplicationPrivate::notify_helper(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  22: QApplication::notify(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  23: QCoreApplication::notifyInternal2(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  24: QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  25: QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
Address 0x12abee80 is 0 bytes inside a block of size 32 free'd  1: operator delete(void*) in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so
  2: (anonymous namespace)::clear(QVariant::Private*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  3: QStandardItem::~QStandardItem() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  4: QStandardItem::removeRows(int, int) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  5: QStandardItemModel::removeRows(int, int, QModelIndex const&) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  6: main::{lambda()#2}::operator()() const in /home/nkrupenko/Development/PersistentIndex_Crash/main.cpp:54
  7: QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, main::{lambda()#2}>::call({lambda()#2}&, void**) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:146
  8: void QtPrivate::Functor<main::{lambda()#2}, 0>::call<QtPrivate::List<>, void>({lambda()#2}&, void*, {lambda()#2}&*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:256
  9: QtPrivate::QFunctorSlotObject<main::{lambda()#2}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:439
  10: QMetaObject::activate(QObject*, int, int, void**) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  11: QAbstractButton::clicked(bool) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  12: QAbstractButtonPrivate::emitClicked() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  13: QAbstractButtonPrivate::click() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  14: QAbstractButton::mouseReleaseEvent(QMouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  15: QWidget::event(QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  16: QApplicationPrivate::notify_helper(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  17: QApplication::notify(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  18: QCoreApplication::notifyInternal2(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  19: QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  20: QWidgetWindow::handleMouseEvent(QMouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  21: QWidgetWindow::event(QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  22: QApplicationPrivate::notify_helper(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  23: QApplication::notify(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  24: QCoreApplication::notifyInternal2(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  25: QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
Block was alloc'd at  1: operator new(unsigned long) in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so
  2: QPersistentModelIndexData::create(QModelIndex const&) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  3: QPersistentModelIndex::QPersistentModelIndex(QModelIndex const&) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  4: main::{lambda()#1}::operator()() const in /home/nkrupenko/Development/PersistentIndex_Crash/main.cpp:46
  5: QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, main::{lambda()#1}>::call({lambda()#1}&, void**) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:146
  6: void QtPrivate::Functor<main::{lambda()#1}, 0>::call<QtPrivate::List<>, void>({lambda()#1}&, void*, {lambda()#1}&*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:256
  7: QtPrivate::QFunctorSlotObject<main::{lambda()#1}, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/include/QtCore/qobjectdefs_impl.h:439
  8: QMetaObject::activate(QObject*, int, int, void**) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  9: QAbstractButton::clicked(bool) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  10: QAbstractButtonPrivate::emitClicked() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  11: QAbstractButtonPrivate::click() in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  12: QAbstractButton::mouseReleaseEvent(QMouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  13: QWidget::event(QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  14: QApplicationPrivate::notify_helper(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  15: QApplication::notify(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  16: QCoreApplication::notifyInternal2(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  17: QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  18: QWidgetWindow::handleMouseEvent(QMouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  19: QWidgetWindow::event(QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  20: QApplicationPrivate::notify_helper(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  21: QApplication::notify(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Widgets.so.5.13.0
  22: QCoreApplication::notifyInternal2(QObject*, QEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Core.so.5.13.0
  23: QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  24: QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0
  25: QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) in /home/nkrupenko/Development/Qt/5.13.0/gcc_64/lib/libQt5Gui.so.5.13.0