0004514: Sketcher crash upon mirroring box selected bspline - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0004514	Sketcher	Bug	public	2020-12-17 00:09	2020-12-20 18:30

Reporter	Vorpal	Assigned To	abdullah
Priority	normal	Severity	major	Reproducibility	always
Status	closed	Resolution	fixed
Platform	Linux	OS	Ubuntu	OS Version	18.04

Summary	0004514: Sketcher crash upon mirroring box selected bspline
Description	When box selecting a bspline such that the control points are also selected, then mirroring said selection, FreeCAD segfaults. I would expect the mirroring code to ignore the control points when mirroring instead of failing on them.
Steps To Reproduce	1. Open attached FreeCAD document 2. Box select bspline (as in attached image) 3. Select an axis or the origin to mirror about. 4. Press the mirror button in the toolbar. 5. FreeCAD segfaults
Additional Information	On most crashes I get stacktrace on the terminal, though sometimes it just crashes without a stacktrace: Program received signal SIGSEGV, Segmentation fault. #0 /lib/x86_64-linux-gnu/libc.so.6(+0x3f040) [0x7f5e8e9bf040] #1 /lib/x86_64-linux-gnu/libc.so.6(+0xa9c6a) [0x7f5e8ea29c6a] 0000002 0x7f5e8fff6b9d in operator==(SbName const&, char const) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libCoin.so.80+0xd 0000003 0x7f5e900ea645 in SoFieldData::hasField(char const) const from /tmp/.mount_freecaaobA25/usr/bin/../lib/libCoin.so.80+0x35 0000004 0x7f5e900ea69a in SoFieldData::addField(SoFieldContainer, char const, SoField const) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libCoin.so.80+0x2a 0000005 0x7f5e903555e5 in SoImage::SoImage() from /tmp/.mount_freecaaobA25/usr/bin/../lib/libCoin.so.80+0x195 0000006 0x7f5e9035594d in SoImage::createInstance() from /tmp/.mount_freecaaobA25/usr/bin/../lib/libCoin.so.80+0x1d 0000007 0x7f5e900e70c6 in SoFieldContainer::setToDefaults() from /tmp/.mount_freecaaobA25/usr/bin/../lib/libCoin.so.80+0x86 0000008 0x7f5dd833504c in SketcherGui::ViewProviderSketch::drawMergedConstraintIcons(std::vector<SketcherGui::ViewProviderSketch::constrIconQueueItem, std::allocator<SketcherGui::ViewProviderSketch::constrIconQueueItem> >) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0x5c 0000009 0x7f5dd8336953 in SketcherGui::ViewProviderSketch::combineConstraintIcons(std::vector<SketcherGui::ViewProviderSketch::constrIconQueueItem, std::allocator<SketcherGui::ViewProviderSketch::constrIconQueueItem> >) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0x473 0000010 0x7f5dd8337c5c in SketcherGui::ViewProviderSketch::drawConstraintIcons() from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0xd5c 0000011 0x7f5dd833c07c in SketcherGui::ViewProviderSketch::draw(bool, bool) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0x358c 0000012 0x7f5dd834b46e in SketcherGui::ViewProviderSketch::updateData(App::Property const) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0x1ae 0000013 0x7f5e915da316 in Gui::ViewProviderDocumentObject::update(App::Property const) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADGui.so+0x56 0000014 0x7f5e9121d02e in Gui::Document::slotChangedObject(App::DocumentObject const&, App::Property const&) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADGui.so+0x4e 0000015 /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADApp.so(+0x1a0eae) [0x7f5e9079beae] 0000016 0x7f5e907cea9c in App::DocumentObject::onChanged(App::Property const) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADApp.so+0x2bc 0000017 0x7f5e6a543010 in Part::Feature::onChanged(App::Property const) from /tmp/.mount_freecaaobA25/usr/lib/Part.so+0x50 0000018 0x7f5e0423f866 in Sketcher::SketchObject::onChanged(App::Property const) from /tmp/.mount_freecaaobA25/usr/lib/Sketcher.so+0x66 0000019 0x7f5e908d11fb in App::Property::hasSetValue() from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADApp.so+0x3b 0000020 0x7f5e6a55fd7c in Part::PropertyGeometryList::setValues(std::vector<Part::Geometry, std::allocator<Part::Geometry> > const&&) from /tmp/.mount_freecaaobA25/usr/lib/Part.so+0x11c 0000021 0x7f5e6a55ffb1 in Part::PropertyGeometryList::setValues(std::vector<Part::Geometry, std::allocator<Part::Geometry> > const&) from /tmp/.mount_freecaaobA25/usr/lib/Part.so+0xd1 0000022 0x7f5e04220493 in Sketcher::SketchObject::solve(bool) from /tmp/.mount_freecaaobA25/usr/lib/Sketcher.so+0x243 0000023 0x7f5dd827106e in SketcherGui::tryAutoRecompute(Sketcher::SketchObject, bool&) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0xae 0000024 0x7f5dd8271113 in SketcherGui::tryAutoRecomputeIfNotSolve(Sketcher::SketchObject) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0x23 0000025 0x7f5dd82aaa1a in CmdSketcherSymmetry::activated(int) from /tmp/.mount_freecaaobA25/usr/lib/SketcherGui.so+0x57a 0000026 0x7f5e91293686 in Gui::Command::invoke(int, Gui::Command::TriggerSource) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADGui.so+0x336 0000027 0x7f5e8f1060d2 in QMetaObject::activate(QObject, int, int, void) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Core.so.5+0x780 0000028 0x7f5e8f91596e in QAction::triggered(bool) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x32 0000029 0x7f5e8f917249 in QAction::activate(QAction::ActionEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0xcb 0000030 /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5(+0x20e28a) [0x7f5e8f9b428a] 0000031 0x7f5e8f9b434a in QAbstractButton::mouseReleaseEvent(QMouseEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x88 0000032 0x7f5e8fa4b1c6 in QToolButton::mouseReleaseEvent(QMouseEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0xa 0000033 0x7f5e8f945c23 in QWidget::event(QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x135 0000034 0x7f5e8fa4b25d in QToolButton::event(QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x4f 0000035 0x7f5e8f91a83a in QApplicationPrivate::notify_helper(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0xde 0000036 0x7f5e8f91f0a9 in QApplication::notify(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x79d 0000037 0x7f5e91257189 in Gui::GUIApplication::notify(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADGui.so+0x89 0000038 0x7f5e8f0efa9c in QCoreApplication::notifyInternal2(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Core.so.5+0x88 #39 0x7f5e8f91e553 in QApplicationPrivate::sendMouseEvent(QWidget, QMouseEvent, QWidget, QWidget, QWidget, QPointer<QWidget>&, bool, bool) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x283 #40 /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5(+0x1af580) [0x7f5e8f955580] 0000041 /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5(+0x1b03d2) [0x7f5e8f9563d2] 0000042 0x7f5e8f91a83a in QApplicationPrivate::notify_helper(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0xde 0000043 0x7f5e8f920405 in QApplication::notify(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Widgets.so.5+0x1af9 0000044 0x7f5e91257189 in Gui::GUIApplication::notify(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADGui.so+0x89 0000045 0x7f5e8f0efa9c in QCoreApplication::notifyInternal2(QObject, QEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Core.so.5+0x88 0000046 0x7f5e8f496724 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Gui.so.5+0x684 0000047 0x7f5e8f4972f7 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Gui.so.5+0x175 0000048 0x7f5e8f484020 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Gui.so.5+0x64 0000049 /tmp/.mount_freecaaobA25/usr/plugins/platforms/../../lib/libQt5XcbQpa.so.5(+0x5b1ea) [0x7f5e892901ea] 0000050 /tmp/.mount_freecaaobA25/usr/bin/../lib/./libglib-2.0.so.0(g_main_context_dispatch+0x2cb) [0x7f5e8b22cdeb] 0000051 /tmp/.mount_freecaaobA25/usr/bin/../lib/./libglib-2.0.so.0(+0x55031) [0x7f5e8b22d031] 0000052 /tmp/.mount_freecaaobA25/usr/bin/../lib/./libglib-2.0.so.0(g_main_context_iteration+0x2e) [0x7f5e8b22d0be] 0000053 0x7f5e8f11ed23 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Core.so.5+0x63 0000054 0x7f5e8f0ec4d7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Core.so.5+0x187 0000055 0x7f5e8f0f034f in QCoreApplication::exec() from /tmp/.mount_freecaaobA25/usr/bin/../lib/libQt5Core.so.5+0x105 0000056 0x7f5e911cd577 in Gui::Application::runApplication() from /tmp/.mount_freecaaobA25/usr/bin/../lib/libFreeCADGui.so+0x15e7 0000057 /tmp/.mount_freecaaobA25/usr/bin/freecad(+0x37cd) [0x55fda81207cd] 0000058 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7) [0x7f5e8e9a1bf7] 0000059 /tmp/.mount_freecaaobA25/usr/bin/freecad(+0x4559) [0x55fda8121559]
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FreeCAD Information	OS: Ubuntu 18.04.5 LTS (X-Cinnamon/cinnamon) Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19.23323 (Git) AppImage Build type: Release Branch: master Hash: 512d5c6141aec52b6eecc67370336a28fde862a6 Python version: 3.8.6 Qt version: 5.12.5 Coin version: 4.0.0 OCC version: 7.4.0 Locale: English/United Kingdom (en_GB)

Vorpal 2020-12-17 00:09 reporter	broken_mirror_2.FCStd (4,433 bytes) freecad_box_select.png (13,656 bytes) freecad_box_select.png (13,656 bytes)

Vorpal 2020-12-17 00:25 reporter ~0015154	I experimented some more. Interestingly this seems to be unique to bsplines. The centre points of circles and arcs as well as the various control lines of ellipses and hyperbola do not cause crashes: The control lines seem to actually act more like free-standing construction elements, and it is possible to not mirror them (very weird). On the other hand, the circle/arc centre points seem to be special but ignored.

chennes 2020-12-19 19:38 administrator ~0015159	I'm getting a slightly different failure: instead of a seg fault immediately, I get an assertion failure on the first mouseMove event in the viewer window. The assertion is: `index ?= 0 && index < this->numCoords` My version is: OS: Windows 10 Version 2004 Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19.23448 (Git) Build type: Debug Branch: master Hash: c276139f192a51bd9c57a911e1d70f1398e69d01 Python version: 3.8.6+ Qt version: 5.15.1 Coin version: 4.0.1 OCC version: 7.5.0 Locale: English/United States (en_US) Backtrace: > ucrtbased.dll!common_assert_to_message_box<wchar_t>(const wchar_t * const expression, const wchar_t * const file_name, const unsigned int line_number, void * const return_address) Line 388 C++ ucrtbased.dll!common_assert<wchar_t>(const wchar_t * const expression, const wchar_t * const file_name, const unsigned int line_number, void * const return_address) Line 424 C++ ucrtbased.dll!_wassert(const wchar_t * expression, const wchar_t * file_name, unsigned int line_number) Line 444 C++ Coin4d.dll!SoCoordinateElement::get3(const int index) Line 178 C++ Coin4d.dll!SoLineSet::generatePrimitives(SoAction * action) Line 722 C++ Coin4d.dll!SoShape::rayPick(SoRayPickAction * action) Line 464 C++ Coin4d.dll!SoNode::rayPickS(SoAction * action, SoNode * node) Line 1170 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action, const int first, const int last) Line 381 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action) Line 451 C++ Coin4d.dll!SoGroup::doAction(SoAction * action) Line 552 C++ Coin4d.dll!SoSeparator::doAction(SoAction * action) Line 490 C++ Coin4d.dll!SoSeparator::rayPick(SoRayPickAction * action) Line 866 C++ Coin4d.dll!SoNode::rayPickS(SoAction * action, SoNode * node) Line 1170 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action, const int first, const int last) Line 381 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action) Line 451 C++ Coin4d.dll!SoGroup::doAction(SoAction * action) Line 552 C++ Coin4d.dll!SoSeparator::doAction(SoAction * action) Line 490 C++ Coin4d.dll!SoSeparator::rayPick(SoRayPickAction * action) Line 866 C++ Coin4d.dll!SoNode::rayPickS(SoAction * action, SoNode * node) Line 1170 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action, const int first, const int last) Line 381 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action) Line 451 C++ Coin4d.dll!SoGroup::doAction(SoAction * action) Line 552 C++ Coin4d.dll!SoSeparator::doAction(SoAction * action) Line 490 C++ Coin4d.dll!SoSeparator::rayPick(SoRayPickAction * action) Line 866 C++ Coin4d.dll!SoNode::rayPickS(SoAction * action, SoNode * node) Line 1170 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action, const int first, const int last) Line 381 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action) Line 451 C++ Coin4d.dll!SoGroup::doAction(SoAction * action) Line 552 C++ Coin4d.dll!SoSeparator::doAction(SoAction * action) Line 490 C++ Coin4d.dll!SoSeparator::rayPick(SoRayPickAction * action) Line 866 C++ Coin4d.dll!SoNode::rayPickS(SoAction * action, SoNode * node) Line 1170 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoAction::beginTraversal(SoNode * node) Line 1273 C++ Coin4d.dll!SoPickAction::beginTraversal(SoNode * node) Line 141 C++ Coin4d.dll!SoRayPickAction::beginTraversal(SoNode * node) Line 1062 C++ Coin4d.dll!SoAction::apply(SoNode * root) Line 566 C++ FreeCADGui_d.dll!Gui::View3DInventorViewer::getPointOnRay(const SbVec2s & pos, Gui::ViewProvider * vp) Line 1159 C++ FreeCADGui_d.dll!Gui::ViewProvider::getPointOnRay(const SbVec2s & pos, const Gui::View3DInventorViewer * viewer) Line 610 C++ SketcherGui_d.pyd!SketcherGui::ViewProviderSketch::mouseMove(const SbVec2s & cursorPos, Gui::View3DInventorViewer * viewer) Line 1129 C++ FreeCADGui_d.dll!Gui::ViewProvider::eventCallback(void * ud, SoEventCallback * node) Line 258 C++ Coin4d.dll!SoEventCallback::handleEvent(SoHandleEventAction * action) Line 358 C++ Coin4d.dll!SoNode::handleEventS(SoAction * action, SoNode * node) Line 1114 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action, const int first, const int last) Line 381 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action) Line 451 C++ Coin4d.dll!SoGroup::doAction(SoAction * action) Line 552 C++ Coin4d.dll!SoSeparator::doAction(SoAction * action) Line 490 C++ Coin4d.dll!SoSeparator::handleEvent(SoHandleEventAction * action) Line 819 C++ FreeCADGui_d.dll!Gui::SoFCUnifiedSelection::handleEvent(SoHandleEventAction * action) Line 726 C++ Coin4d.dll!SoNode::handleEventS(SoAction * action, SoNode * node) Line 1114 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action, const int first, const int last) Line 381 C++ Coin4d.dll!SoChildList::traverse(SoAction * const action) Line 451 C++ Coin4d.dll!SoGroup::doAction(SoAction * action) Line 552 C++ Coin4d.dll!SoSeparator::doAction(SoAction * action) Line 490 C++ Coin4d.dll!SoSeparator::handleEvent(SoHandleEventAction * action) Line 819 C++ Coin4d.dll!SoNode::handleEventS(SoAction * action, SoNode * node) Line 1114 C++ Coin4d.dll!SoAction::traverse(SoNode * const node) Line 951 C++ Coin4d.dll!SoHandleEventAction::beginTraversal(SoNode * node) Line 380 C++ Coin4d.dll!SoAction::apply(SoNode * root) Line 566 C++ Coin4d.dll!SoEventManager::actuallyProcessEvent(const SoEvent * const event) Line 367 C++ Coin4d.dll!SoEventManager::processEvent(const SoEvent * const event) Line 316 C++ FreeCADGui_d.dll!SIM::Coin3D::Quarter::QuarterWidget::processSoEvent(const SoEvent * event) Line 1087 C++ FreeCADGui_d.dll!SIM::Coin3D::Quarter::SoQTQuarterAdaptor::processSoEvent(const SoEvent * event) Line 715 C++ FreeCADGui_d.dll!Gui::View3DInventorViewer::processSoEventBase(const SoEvent * const ev) Line 2572 C++ FreeCADGui_d.dll!Gui::NavigationStyle::processSoEvent(const SoEvent * const ev) Line 1491 C++ FreeCADGui_d.dll!Gui::BlenderNavigationStyle::processSoEvent(const SoEvent * const ev) Line 382 C++ FreeCADGui_d.dll!Gui::NavigationStyle::processEvent(const SoEvent * const ev) Line 1455 C++ FreeCADGui_d.dll!Gui::View3DInventorViewer::processSoEvent(const SoEvent * ev) Line 2567 C++ FreeCADGui_d.dll!SIM::Coin3D::Quarter::EventFilter::eventFilter(QObject * obj, QEvent * qevent) Line 173 C++ [External Code] FreeCADGui_d.dll!Gui::GUIApplication::notify(QObject * receiver, QEvent * event) Line 92 C++ [External Code] FreeCADGui_d.dll!Gui::GUIApplication::notify(QObject * receiver, QEvent * event) Line 92 C++ [External Code] FreeCADGui_d.dll!Gui::Application::runApplication() Line 2287 C++ FreeCAD_d.exe!main(int argc, char * * argv) Line 302 C++ FreeCAD_d.exe!WinMain(HINSTANCE__ * __formal, HINSTANCE__ * __formal, char * __formal, int __formal) Line 97 C++ [External Code]

abdullah 2020-12-20 18:30 manager ~0015163	Fix committed to master branch.

FreeCAD: master 2ebed71e 2020-12-20 10:42:45 abdullah Committer: abdullahtahiriyo Details Diff	Sketcher: fix crash on mirroring geometry defined by internal alignment geometry ================================================================================ Internal Alignment constraint mirroring was never implemented. With the enhancements brought with implementation of geometry extensions in the sketcher, this lack of implementation became a crash, as geometry was marked as being internal alignment, while no associated internal alignment constraint was created. Restrictions: - Internal alignment geometry is only to be mirrored if the geometry it defines is also being mirrored. Internal alignment geometry is otherwise skipped. This is because it does not make sense to have a pole without a b-spline, or a major axis of a ellipse without an ellipse. fixes 0004514		Affected Issues 0004514
	mod - src/Mod/Sketcher/App/SketchObject.cpp		Diff File

Date Modified	Username	Field	Change
2020-12-17 00:09	Vorpal	New Issue
2020-12-17 00:09	Vorpal	File Added: broken_mirror_2.FCStd
2020-12-17 00:09	Vorpal	File Added: freecad_box_select.png
2020-12-17 00:25	Vorpal	Note Added: 0015154
2020-12-19 19:38	chennes	Note Added: 0015159
2020-12-20 18:30	abdullah	Changeset attached	=> FreeCAD master 2ebed71e
2020-12-20 18:30	abdullah	Note Added: 0015163
2020-12-20 18:30	abdullah	Assigned To	=> abdullah
2020-12-20 18:30	abdullah	Status	new => closed
2020-12-20 18:30	abdullah	Resolution	open => fixed