0004598: Segfault when deleting template without page - FreeCAD Tracker

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ID	Project	Category	View Status	Date Submitted	Last Update

0004598	TechDraw	Bug	public	2021-03-17 10:30	2021-03-27 12:30

Reporter	matthijskooijman	Assigned To	wmayer
Priority	high	Severity	crash	Reproducibility	always
Status	closed	Resolution	fixed
Product Version	0.19
Target Version	0.20

Summary	0004598: Segfault when deleting template without page
Description	Fiddling around with templates and pages in TechDraw, I managed a segfault, that I can reliably reproduce with 0.19 stable (from the PPA). I've skipped making a post on the forum, since a segfault is clearly a bug. If that's not ok, let me know and I'll go through the extra step of writing a bug report on the forum first next time.
Steps To Reproduce	1. Create a new document, select TechDraw 2. Create 2 default pages (TechDraw -> Insert Default Page) 3. Expand both pages in the tree view. 4. Drag "Template" and drop it onto "Template001". This replaces the latter with the former, so now both pages use "Template". The original "Template001" is now shown next to both pages. 5. Delete "Template001" -> Segfault.
Additional Information	Backtrace Program received signal SIGSEGV, Segmentation fault. #0 /lib/x86_64-linux-gnu/libc.so.6(+0x46210) [0x7f3ea80d4210] #1 0x7f3eaa1360c4 in App::PropertyString::getValue() const from /usr/lib/freecad-python3/lib/libFreeCADApp.so+0x4 0000002 0x7f3e2c47cb68 in TechDrawGui::ViewProviderTemplate::onDelete(std::vector<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > > > const&) from /usr/lib/freecad-python3/lib/TechDrawGui.so+0xc 8 0000003 0x7f3eaa7f2c76 in StdCmdDelete::activated(int) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x676 0000004 0x7f3eaa7e52b0 in Gui::Command::invoke(int, Gui::Command::TriggerSource) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x4d0 0000005 0x7f3ea872e300 in QMetaObject::activate(QObject, int, int, void) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x7d0 0000006 0x7f3ea91163e6 in QAction::triggered(bool) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x46 0000007 0x7f3ea9118aa2 in QAction::activate(QAction::ActionEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0xf2 0000008 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x2ecd12) [0x7f3ea929ed12] 0000009 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x2f44ae) [0x7f3ea92a64ae] 0000010 0x7f3ea92a74d2 in QMenu::mouseReleaseEvent(QMouseEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x272 0000011 0x7f3ea915f2b6 in QWidget::event(QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x286 0000012 0x7f3ea92a9adb in QMenu::event(QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x15b 0000013 0x7f3ea911ca66 in QApplicationPrivate::notify_helper(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x86 0000014 0x7f3ea9126343 in QApplication::notify(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x583 0000015 0x7f3eaa7b11d8 in Gui::GUIApplication::notify(QObject, QEvent) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x88 0000016 0x7f3ea870293a in QCoreApplication::notifyInternal2(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x18a 0000017 0x7f3ea9125457 in QApplicationPrivate::sendMouseEvent(QWidget, QMouseEvent, QWidget, QWidget, QWidget*, QPointer<QWidget>&, bool, bool) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x1b7 0000018 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x1c9ce4) [0x7f3ea917bce4] 0000019 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x1cc1ec) [0x7f3ea917e1ec] 0000020 0x7f3ea911ca66 in QApplicationPrivate::notify_helper(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x86 0000021 0x7f3ea91260f0 in QApplication::notify(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x330 0000022 0x7f3eaa7b11d8 in Gui::GUIApplication::notify(QObject, QEvent) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x88 0000023 0x7f3ea870293a in QCoreApplication::notifyInternal2(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x18a 0000024 0x7f3ea8aed7d3 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0x6e3 0000025 0x7f3ea8aee7f6 in QGuiApplicationPrivate::processTabletEvent(QWindowSystemInterfacePrivate::TabletEvent) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0x4f6 0000026 0x7f3ea8aef0ca in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0x21a 0000027 0x7f3ea8ac935b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0xbb 0000028 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5(+0x7932e) [0x7f3ea238f32e] 0000029 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x27d) [0x7f3ea63b017d] 0000030 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x52400) [0x7f3ea63b0400] 0000031 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_iteration+0x33) [0x7f3ea63b04a3] 0000032 0x7f3ea875a565 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x65 0000033 0x7f3ea87014db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x12b 0000034 0x7f3ea92a40b1 in QMenu::exec(QPoint const&, QAction) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x71 0000035 0x7f3eaa96a002 in Gui::TreeWidget::contextMenuEvent(QContextMenuEvent) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x542 0000036 0x7f3ea915f2b6 in QWidget::event(QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x286 0000037 0x7f3ea920cd52 in QFrame::event(QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x22 0000038 0x7f3ea9391482 in QAbstractItemView::viewportEvent(QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x72 #39 0x7f3ea93ff62f in QTreeView::viewportEvent(QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x3f #40 0x7f3ea870264b in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x9b 0000041 0x7f3ea911ca55 in QApplicationPrivate::notify_helper(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x75 0000042 0x7f3ea9126b93 in QApplication::notify(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0xdd3 0000043 0x7f3eaa7b11d8 in Gui::GUIApplication::notify(QObject, QEvent) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x88 0000044 0x7f3ea870293a in QCoreApplication::notifyInternal2(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x18a 0000045 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x1c994a) [0x7f3ea917b94a] 0000046 /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5(+0x1cc1ec) [0x7f3ea917e1ec] 0000047 0x7f3ea911ca66 in QApplicationPrivate::notify_helper(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x86 0000048 0x7f3ea91260f0 in QApplication::notify(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5+0x330 0000049 0x7f3eaa7b11d8 in Gui::GUIApplication::notify(QObject, QEvent) from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x88 0000050 0x7f3ea870293a in QCoreApplication::notifyInternal2(QObject, QEvent) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x18a 0000051 0x7f3ea8aed7d3 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0x6e3 0000052 0x7f3ea8aee7f6 in QGuiApplicationPrivate::processTabletEvent(QWindowSystemInterfacePrivate::TabletEvent) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0x4f6 0000053 0x7f3ea8aef0ca in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0x21a 0000054 0x7f3ea8ac935b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5+0xbb 0000055 /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5(+0x7932e) [0x7f3ea238f32e] 0000056 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x27d) [0x7f3ea63b017d] 0000057 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x52400) [0x7f3ea63b0400] 0000058 /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_iteration+0x33) [0x7f3ea63b04a3] 0000059 0x7f3ea875a565 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x65 0000060 0x7f3ea87014db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x12b 0000061 0x7f3ea8709246 in QCoreApplication::exec() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5+0x96 0000062 0x7f3eaa720d96 in Gui::Application::runApplication() from /usr/lib/freecad-python3/lib/libFreeCADGui.so+0x1816 0000063 freecad(+0x4cde) [0x555cdcce1cde] 0000064 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf3) [0x7f3ea80b50b3] 0000065 freecad(+0x506e) [0x555cdcce206e]
Tags	#pending-forum

FreeCAD Information	OS: Ubuntu 20.04.2 LTS (GNOME/gnome-xorg) Word size of OS: 64-bit Word size of FreeCAD: 64-bit Version: 0.19. Build type: Release Branch: unknown Hash: 9e3b630bbfb6807e93eeffb655e6c20f218644fc Python version: 3.8.5 Qt version: 5.12.8 Coin version: 4.0.0 OCC version: 7.5.1 Locale: English/United States (en_US)

matthijskooijman 2021-03-17 10:32 reporter ~0015528	Here's an example file generated using steps 1-4, doing step 5 on it will crash FreeCAD. Techdraw template segfault.FCStd (31,795 bytes)

Kunda1 2021-03-27 10:41 administrator ~0015552	Forum thread: https://forum.freecadweb.org/viewtopic.php?f=35&t=57135 (yes please open a forum thread first, many bugs get fixed in the forum, if not then we open a ticket)

wmayer 2021-03-27 12:30 administrator ~0015557	Fix committed to master branch.

Date Modified	Username	Field	Change
2021-03-17 10:30	matthijskooijman	New Issue
2021-03-17 10:32	matthijskooijman	Note Added: 0015528
2021-03-17 10:32	matthijskooijman	File Added: Techdraw template segfault.FCStd
2021-03-27 10:41	Kunda1	Priority	normal => high
2021-03-27 10:41	Kunda1	Severity	minor => crash
2021-03-27 10:41	Kunda1	Target Version	=> 0.20
2021-03-27 10:41	Kunda1	Note Added: 0015552
2021-03-27 10:41	Kunda1	Tag Attached: #pending-forum
2021-03-27 12:30	wmayer	Changeset attached	=> FreeCAD master 5e73e718
2021-03-27 12:30	wmayer	Note Added: 0015557
2021-03-27 12:30	wmayer	Assigned To	=> wmayer
2021-03-27 12:30	wmayer	Status	new => closed
2021-03-27 12:30	wmayer	Resolution	open => fixed