Crash if no simulator found on the first start

papoteur-mga commented 3 weeks ago

Hello, I just build qucs-s 24.3.2 with Qt6.4 in Linux I launch it, then apply the default values in the first window. I get this crash:


Thread 1 "qucs-s" received signal SIGSEGV, Segmentation fault.
0x00007ffff77fa879 in QWidget::screen (this=0x0) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qwidget.cpp:2506
2506        if (auto associatedScreen = d->associatedScreen())
(gdb) bt full
#0  0x00007ffff77fa879 in QWidget::screen (this=0x0) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qwidget.cpp:2506
        associatedScreen = <optimized out>
        d = <optimized out>
        topLevel = <optimized out>
        topData = <optimized out>
        screenByPos = <optimized out>
#1  0x00007ffff77fa985 in QWidget::saveGeometry (this=0x0) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qwidget.cpp:7348
        array = {d = {d = 0x0, ptr = 0x0, size = 0}, static _empty = 0 '\000'}
        stream = {<QIODeviceBase> = {<No data fields>}, d = {d = 0x0}, dev = 0x2b96b70, owndev = true, noswap = false, byteorder = QDataStream::BigEndian, ver = 7, 
          q_status = QDataStream::Ok}
        magicNumber = 31051979
        majorVersion = 3
        minorVersion = 0
        screenNumber = <optimized out>
#2  0x00000000004e97d0 in saveApplSettings() ()
No symbol table info available.
#3  0x00007ffff65b96d5 in void doActivate<false>(QObject*, int, void**) () from /usr/lib64/libQt6Core.so.6
No symbol table info available.
#4  0x00007ffff78d3f22 in QAbstractButton::clicked (this=this@entry=0x2b6ac20, _t1=<optimized out>)
    at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/build/src/widgets/Widgets_autogen/include/moc_qabstractbutton.cpp:368
        _a = {0x0, 0x7fffffffc38c}
#5  0x00007ffff78d414a in QAbstractButtonPrivate::emitClicked (this=0x2b789d0) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/widgets/qabstractbutton.cpp:379
        q = 0x2b6ac20
        guard = <optimized out>
#6  0x00007ffff78d56b8 in QAbstractButtonPrivate::click (this=0x2b789d0) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/widgets/qabstractbutton.cpp:372
        q = <optimized out>
        changeState = <optimized out>
        guard = <optimized out>
#7  0x00007ffff78d58c6 in QAbstractButton::mouseReleaseEvent (this=0x2b6ac20, e=0x7fffffffc980) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/widgets/qabstractbutton.cpp:973
        d = 0x2b789d0
#8  0x00007ffff780bc08 in QWidget::event (this=0x2b6ac20, event=0x7fffffffc980) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qwidget.cpp:9205
        d = <optimized out>
#9  0x00007ffff77b6261 in QApplicationPrivate::notify_helper (this=this@entry=0xb6cba0, receiver=receiver@entry=0x2b6ac20, e=e@entry=0x7fffffffc980)
    at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qapplication.cpp:3315
        consumed = false
        filtered = false
#10 0x00007ffff77bf9c7 in QApplication::notify (this=<optimized out>, receiver=0x2b6ac20, e=0x7fffffffc980)
    at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qapplication.cpp:2803
        me = <incomplete type>
        mouse = 0x7fffffffc980
        relpos = {xp = 62, yp = 10}
        eventAccepted = <optimized out>
        pw = {wp = {d = 0x2b18190, value = 0x2b6ac20}}
        w = 0x2b6ac20
        d = <optimized out>
        isWindowType = <optimized out>
        isWidgetType = <optimized out>
        res = false
--Type <RET> for more, q to quit, c to continue without paging--c
#11 0x00007ffff655b798 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt6Core.so.6
No symbol table info available.
#12 0x00007ffff77be2c4 in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x2b6ac20, event=event@entry=0x7fffffffc980, alienWidget=<optimized out>, alienWidget@entry=0x2b6ac20, nativeWidget=0x2b5a290, buttonDown=buttonDown@entry=0x7ffff7d78a90 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qapplication.cpp:2387                                                                                                                                       
        receiverGuard = <optimized out>
        nativeGuard = <optimized out>
        alienGuard = <optimized out>
        activePopupWidget = <optimized out>
        graphicsWidget = false
        widgetUnderMouse = <optimized out>
        wasLeaveAfterRelease = <optimized out>
        result = true
#13 0x00007ffff781d1b7 in QWidgetWindow::handleMouseEvent (this=0x2b96750, event=0x7fffffffcc20) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qwidgetwindow.cpp:623
        translated = <incomplete type>
        contextMenuTrigger = QEvent::MouseButtonPress
        widget = 0x2b6ac20
        mapped = {xp = 62, yp = 10}
        initialPress = <optimized out>
        receiver = 0x2b6ac20
#14 0x00007ffff781fc68 in QWidgetWindow::event (this=0x2b96750, event=0x7fffffffcc20) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qwidgetwindow.cpp:241
No locals.
#15 0x00007ffff77b6261 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x2b96750, e=0x7fffffffcc20) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/widgets/kernel/qapplication.cpp:3315                                                                                                                                                                          
        consumed = false
        filtered = false
#16 0x00007ffff655b798 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt6Core.so.6
No symbol table info available.
#17 0x00007ffff6deeda3 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt6Gui.so.6
No symbol table info available.
#18 0x00007ffff6e3ee7c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt6Gui.so.6
No symbol table info available.
#19 0x00007ffff4f3204a in xcbSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt6XcbQpa.so.6
No symbol table info available.
#20 0x00007ffff5f17689 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
No symbol table info available.
#21 0x00007ffff5f17a18 in g_main_context_iterate.constprop () from /usr/lib64/libglib-2.0.so.0
No symbol table info available.
#22 0x00007ffff5f17a9c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
No symbol table info available.
#23 0x00007ffff67f59ec in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt6Core.so.6
No symbol table info available.
#24 0x00007ffff65671c3 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt6Core.so.6
No symbol table info available.
#25 0x00007ffff79f99f7 in QDialog::exec (this=0x2b5a290) at /usr/src/debug/qtbase6-6.4.1-5.mga9.x86_64/src/corelib/global/qflags.h:74
        eventLoop = <incomplete type>
        d = 0x2782610
        deleteOnClose = false
        wasShowModal = false
        guard = <optimized out>
        res = <optimized out>
#26 0x00000000005068f9 in QucsApp::slotSimSettings() ()
No symbol table info available.
#27 0x0000000000518880 in QucsApp::QucsApp() ()
No symbol table info available.
#28 0x00000000004df43b in main ()

I don't know if the problem is with your application, or Qt 6. Papoteur

papoteur-mga commented 3 weeks ago

A similar error occurs with Qt5

(gdb) bt full
#0  0x00007ffff798ecb4 in QWidget::frameGeometry() const () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#1  0x00007ffff798edb3 in QWidget::saveGeometry() const () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#2  0x00000000004cdac1 in saveApplSettings() ()
No symbol table info available.
#3  0x00007ffff6cd3f84 in void doActivate<false>(QObject*, int, void**) () from /usr/lib64/libQt5Core.so.5
No symbol table info available.
#4  0x00007ffff7a4d652 in QAbstractButton::clicked(bool) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#5  0x00007ffff7a4d86a in QAbstractButtonPrivate::emitClicked() () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#6  0x00007ffff7a4f2f8 in QAbstractButtonPrivate::click() () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#7  0x00007ffff7a4f507 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#8  0x00007ffff79a0d28 in QWidget::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#9  0x00007ffff796240e in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#10 0x00007ffff796a2c2 in QApplication::notify(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#11 0x00007ffff6c9e888 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
No symbol table info available.
#12 0x00007ffff796844b in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#13 0x00007ffff79b9059 in QWidgetWindow::handleMouseEvent(QMouseEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#14 0x00007ffff79bc1b9 in QWidgetWindow::event(QEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#15 0x00007ffff796240e in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#16 0x00007ffff6c9e888 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib64/libQt5Core.so.5
No symbol table info available.
#17 0x00007ffff713c13c in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib64/libQt5Gui.so.5
No symbol table info available.
#18 0x00007ffff7110f2c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Gui.so.5
No symbol table info available.
#19 0x00007ffff371cb8a in xcbSourceDispatch(_GSource*, int (*)(void*), void*) () from /usr/lib64/libQt5XcbQpa.so.5
No symbol table info available.
#20 0x00007ffff5c4c689 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
No symbol table info available.
#21 0x00007ffff5c4ca18 in g_main_context_iterate.constprop () from /usr/lib64/libglib-2.0.so.0
No symbol table info available.
#22 0x00007ffff5c4ca9c in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
No symbol table info available.
#23 0x00007ffff6cf31f6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
No symbol table info available.
--Type <RET> for more, q to quit, c to continue without paging--c
#24 0x00007ffff6c9d46b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQt5Core.so.5
No symbol table info available.
#25 0x00007ffff7b53247 in QDialog::exec() () from /usr/lib64/libQt5Widgets.so.5
No symbol table info available.
#26 0x00000000004e9ca9 in QucsApp::slotSimSettings() ()
No symbol table info available.
#27 0x00000000004f773f in QucsApp::QucsApp() ()
No symbol table info available.
#28 0x00000000004c4919 in main ()

ra3xdh commented 3 weeks ago

I have just tested a fresh start of the application and I cannot reproduce this. There is no crash using Manjaro+Wayland+Qt6.7.2 Please post a full information about your platform. A test in the VM environment may be required.

papoteur-mga commented 3 weeks ago

My system is Mageia 9, using Plasma - X11 Graphic driver is amdgpu. Do you need other info?

ra3xdh commented 3 weeks ago

My system is Mageia 9, using Plasma - X11

Yes, this information is sufficient.

I have also tried fresh application start using Ubuntu+Qt6.2.4 and still cannot reproduce the crash. The test in VM using Mageia is required.

papoteur-mga commented 2 weeks ago

My system is Mageia 9, using Plasma - X11

The test in VM using Mageia is required.

I just did one, in Mageia Cauldron (development version). I still get a crash as exposed above. Qt6.7

ra3xdh commented 2 weeks ago

I have installed Mageia9 in the VM and I can reproduce the crash. The Qucs-S crashes only if it cannot find any simulator on the first startup. This should not normally happen. The Qucs-S should find at least QucsatorRF with is compailed together with GUI.

I have found the following issues in Mageia installation:

You probably forgot git submodule init && git submodule update after the clone repository. Qucsator was not compiled and installed. Please try to recompile Qucs-S with submodules.
The Mageia Ngspice package seems to be broken. It doesn't contain ngspice executable. Please compile Ngspice from source.

Workaround for this issue

Press the Cancel button in the dialog window on the first application start. You will be able to launch the application and configure simulators later using Simulation->Simulator settings. But anyway you should provide a correct Ngspcie installation and compile Qucs-S with submodule.

TODO

I will provide a fix for crash soon. Anyway the application should not crash if the simulator not found by some reason.

ra3xdh commented 2 weeks ago

The crash fixed by #992

ra3xdh / qucs_s

Crash if no simulator found on the first start #979