https://bugs.kde.org/show_bug.cgi?id=374568
Bug ID: 374568
Summary: Applications crash when menu bar is accessed
Product: QtCurve
Version: git
Platform: Gentoo Packages
OS: Linux
Status: UNCONFIRMED
Severity: crash
Priority: NOR
Component: qt5
Assignee: yyc1...@gmail.com
Reporter: eugene.shalygin+bugzilla....@gmail.com
CC: h...@kde.org
Target Milestone: ---
GCC 6.3.0, -fsanitaze=address
==31500==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc
0x7ff7ec132047 bp 0x7ffd660bc7c0 sp 0x7ffd660bc740 T0)
#0 0x7ff7ec132046 in QString::startsWith(QString const&,
Qt::CaseSensitivity) const (/usr/lib64/libQt5Core.so.5+0x121046)
#1 0x7ff7cfbb5a6e in determineFileName
/home/eugene/develop/KDE/live/qtcurve/qt5/common/config_file.cpp:51
#2 0x7ff7cfb5b67a in loadImage(QString const&, QtCPixmap*)
(/home/eugene/develop/KDE/live/qtcurve/build/qt5/style/qtcurve.so+0x1867a)
#3 0x7ff7cfbabbc1 in QtCurve::updateMenuBarEvent(QMouseEvent*, QMenuBar*)
/home/eugene/develop/KDE/live/qtcurve/qt5/style/qtcurve_utils.cpp:250
#4 0x7ff7cfb7f42a in QtCurve::Style::eventFilter(QObject*, QEvent*)
/home/eugene/develop/KDE/live/qtcurve/qt5/style/qtcurve_api.cpp:969
#5 0x7ff7ec2496d1 in
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*)
(/usr/lib64/libQt5Core.so.5+0x2386d1)
#6 0x7ff7eca69a34 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(/usr/lib64/libQt5Widgets.so.5+0x159a34)
#7 0x7ff7eca7174c in QApplication::notify(QObject*, QEvent*)
(/usr/lib64/libQt5Widgets.so.5+0x16174c)
#8 0x7ff7ec249899 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(/usr/lib64/libQt5Core.so.5+0x238899)
#9 0x7ff7eca701cc in QApplicationPrivate::sendMouseEvent(QWidget*,
QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool)
(/usr/lib64/libQt5Widgets.so.5+0x1601cc)
#10 0x7ff7ecac7f2d (/usr/lib64/libQt5Widgets.so.5+0x1b7f2d)
#11 0x7ff7ecaca7da (/usr/lib64/libQt5Widgets.so.5+0x1ba7da)
#12 0x7ff7eca69a5b in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(/usr/lib64/libQt5Widgets.so.5+0x159a5b)
#13 0x7ff7eca70c08 in QApplication::notify(QObject*, QEvent*)
(/usr/lib64/libQt5Widgets.so.5+0x160c08)
#14 0x7ff7ec249899 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(/usr/lib64/libQt5Core.so.5+0x238899)
#15 0x7ff7ec57b752 in
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*)
(/usr/lib64/libQt5Gui.so.5+0xf0752)
#16 0x7ff7ec57d174 in
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)
(/usr/lib64/libQt5Gui.so.5+0xf2174)
#17 0x7ff7ec55f51a in
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(/usr/lib64/libQt5Gui.so.5+0xd451a)
#18 0x7ff7d57723bf (/usr/lib64/libQt5XcbQpa.so.5+0x703bf)
#19 0x7ff7e2be8096 in g_main_context_dispatch
(/usr/lib64/libglib-2.0.so.0+0x49096)
#20 0x7ff7e2be82c7 (/usr/lib64/libglib-2.0.so.0+0x492c7)
#21 0x7ff7e2be836b in g_main_context_iteration
(/usr/lib64/libglib-2.0.so.0+0x4936b)
#22 0x7ff7ec294fae in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(/usr/lib64/libQt5Core.so.5+0x283fae)
#23 0x7ff7ec248929 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(/usr/lib64/libQt5Core.so.5+0x237929)
#24 0x7ff7ec25014c in QCoreApplication::exec()
(/usr/lib64/libQt5Core.so.5+0x23f14c)
#25 0x4038f0 (/usr/bin/pictorialist+0x4038f0)
#26 0x7ff7eb387740 in __libc_start_main (/lib64/libc.so.6+0x20740)
#27 0x404148 (/usr/bin/pictorialist+0x404148)
The stacktrace is strange and seems to be corrupted. I don't understand how the
hack in updateMenuBarEvent() could work, but since QObject::event() is virtual
and public, I propose the following change:
diff --git a/qt5/style/qtcurve_utils.cpp b/qt5/style/qtcurve_utils.cpp
index 608876b1..057d4f15 100644
--- a/qt5/style/qtcurve_utils.cpp
+++ b/qt5/style/qtcurve_utils.cpp
@@ -238,16 +238,8 @@ updateMenuBarEvent(QMouseEvent *event, QMenuBar *menu)
}
};
- struct HackedMenu: public QMenuBar {
- void
- send(QMouseEvent *ev)
- {
- event(ev);
- }
- };
-
if (((HackEvent*)event)->adjust()) {
- ((HackedMenu*)menu)->send(event);
+ static_cast<QObject*>(menu)->event(event);
return true;
}
return false;
--
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