Escaping out of Dialog causes QGIS to crash #23877

qgib · 2016-12-08T13:46:05Z

Author Name: ramon . (ramon .)
Original Redmine Issue: 15961
Affected QGIS version: 2.18.7
Redmine category:gui
Assignee: Matthias Kuhn

Pressing Esc in at least one dialog can cause QGIS to crash.

The known case can be replicated as follows:

I have a layer (shape in this case) with the properties open. I double click on the Symbol to get the Symbol Selector. Then I want to get out of the dialog and reach for Esc to close it. Nothing happens so I press Esc again and QGIS as well as the dialog closes up.

This is on Jessie, with 2.18.1.

There may be others, and if so, could they be added to this bug report.

qgib · 2016-12-08T23:28:10Z

Author Name: Richard Duivenvoorde (@rduivenvoorde)

Crash confirmed here in 2.18.1 on Debian Testing.

gdb bt below, I hope this is usefull?

src/gui/qgscollapsiblegroupbox.cpp: 365: (updateStyle) [0ms] groupbox: mLayerRenderingGroupBox style:  offset: left=0 top=3 top2=5

Thread 1 "qgis" received signal SIGSEGV, Segmentation fault.
0x0000000000000041 in ?? ()
(gdb) bt
#_0  0x0000000000000041 in ?? ()
#_1  0x00007ffff68f79ab in QgsCategorizedSymbolRendererV2Widget::cleanUpSymbolSelector (this=0x55556485e230, container=0x555564a000b0)
    at /home/richard/dev/qgis/git/qgis218/src/gui/symbology-ng/qgscategorizedsymbolrendererv2widget.cpp:1014
#_2  0x00007ffff6caad47 in QgsCategorizedSymbolRendererV2Widget::qt_static_metacall (_o=0x55556485e230, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x7fffffff9a00)
    at /home/richard/dev/qgis/git/qgis218/build/src/gui/symbology-ng/moc_qgscategorizedsymbolrendererv2widget.cxx:232
#_3  0x00007ffff48cd660 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_4  0x00007ffff6ca281f in QgsPanelWidget::panelAccepted (this=0x555564a000b0, _t1=0x555564a000b0) at /home/richard/dev/qgis/git/qgis218/build/src/gui/moc_qgspanelwidget.cxx:110
#_5  0x00007ffff6c24db9 in QgsPanelWidget::acceptPanel (this=0x555564a000b0) at /home/richard/dev/qgis/git/qgis218/src/gui/qgspanelwidget.cpp:100
#_6  0x00007ffff6c24df0 in QgsPanelWidget::keyPressEvent (this=0x555564a000b0, event=0x7fffffff9f10) at /home/richard/dev/qgis/git/qgis218/src/gui/qgspanelwidget.cpp:107
#_7  0x00007ffff3c5b923 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_8  0x00007ffff3c0454c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_9  0x00007ffff3c0cf8f in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_10 0x00007ffff51df521 in QgsApplication::notify (this=0x7fffffffd290, receiver=0x555557673370, event=0x7fffffff9f10) at /home/richard/dev/qgis/git/qgis218/src/core/qgsapplication.cpp:281
#_11 0x00007ffff48b8f1d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_12 0x00007ffff3cab653 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_13 0x00007ffff3cabb63 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_14 0x00007ffff3c84908 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_15 0x00007ffff3cae502 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_16 0x00007fffec22e7f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#_17 0x00007fffec22ea60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#_18 0x00007fffec22eb0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#_19 0x00007ffff48e9854 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_20 0x00007ffff3cae5d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_21 0x00007ffff48b77ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_22 0x00007ffff48b7b55 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_23 0x00007ffff40e230c in QDialog::exec() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_24 0x00007ffff6c24bfe in QgsPanelWidget::openPanel (this=0x55556485e230, panel=0x555564a000b0) at /home/richard/dev/qgis/git/qgis218/src/gui/qgspanelwidget.cpp:92
#_25 0x00007ffff68f51da in QgsCategorizedSymbolRendererV2Widget::changeCategorizedSymbol (this=0x55556485e230) at /home/richard/dev/qgis/git/qgis218/src/gui/symbology-ng/qgscategorizedsymbolrendererv2widget.cpp:580
#_26 0x00007ffff6caac1e in QgsCategorizedSymbolRendererV2Widget::qt_static_metacall (_o=0x55556485e230, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffffffab50)
    at /home/richard/dev/qgis/git/qgis218/build/src/gui/symbology-ng/moc_qgscategorizedsymbolrendererv2widget.cxx:218
#_27 0x00007ffff48cd660 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_28 0x00007ffff42a3c72 in QAbstractButton::clicked(bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_29 0x00007ffff3fda5c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_30 0x00007ffff3fdb944 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_31 0x00007ffff3fdba54 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_32 0x00007ffff3c5ae80 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_33 0x00007ffff3c0454c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_34 0x00007ffff3c0cca7 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_35 0x00007ffff51df521 in QgsApplication::notify (this=0x7fffffffd290, receiver=0x55556486ad40, event=0x7fffffffb1d0) at /home/richard/dev/qgis/git/qgis218/src/core/qgsapplication.cpp:281
#_36 0x00007ffff48b8f1d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_37 0x00007ffff3c0accb in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_38 0x00007ffff3c861a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_39 0x00007ffff3c84b5c in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_40 0x00007ffff3cae502 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_41 0x00007fffec22e7f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#_42 0x00007fffec22ea60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#_43 0x00007fffec22eb0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#_44 0x00007ffff48e9854 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_45 0x00007ffff3cae5d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_46 0x00007ffff48b77ef in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_47 0x00007ffff48b7b55 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_48 0x00007ffff40e230c in QDialog::exec() () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_49 0x00007ffff7519439 in QgisApp::showLayerProperties (this=0x555555fa5610, ml=0x555557a4c430) at /home/richard/dev/qgis/git/qgis218/src/app/qgisapp.cpp:11439
#_50 0x00007ffff74fcaa6 in QgisApp::layerProperties (this=0x555555fa5610) at /home/richard/dev/qgis/git/qgis218/src/app/qgisapp.cpp:6351
#_51 0x00007ffff74c90af in QgisApp::layerTreeViewDoubleClicked (this=0x555555fa5610, index=...) at /home/richard/dev/qgis/git/qgis218/src/app/qgisapp.cpp:460
#_52 0x00007ffff7961af3 in QgisApp::qt_static_metacall (_o=0x555555fa5610, _c=QMetaObject::InvokeMetaMethod, _id=10, _a=0x7fffffffbdd0) at /home/richard/dev/qgis/git/qgis218/build/src/app/moc_qgisapp.cxx:660
#_53 0x00007ffff48cd660 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_54 0x00007ffff413b615 in QAbstractItemView::doubleClicked(QModelIndex const&) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_55 0x00007ffff41845fb in QTreeView::mouseDoubleClickEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_56 0x00007ffff3c5ba00 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_57 0x00007ffff401fc8e in QFrame::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_58 0x00007ffff4144ba3 in QAbstractItemView::viewportEvent(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_59 0x00007ffff418646c in QTreeView::viewportEvent(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_60 0x00007ffff48b90a1 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_61 0x00007ffff3c0452c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_62 0x00007ffff3c0cca7 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_63 0x00007ffff51df521 in QgsApplication::notify (this=0x7fffffffd290, receiver=0x5555562d44e0, event=0x7fffffffc6a0) at /home/richard/dev/qgis/git/qgis218/src/core/qgsapplication.cpp:281
#_64 0x00007ffff48b8f1d in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#_65 0x00007ffff3c0accb in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_66 0x00007ffff3c861a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#_67 0x00007ffff3c84b5c in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4

qgib · 2016-12-08T23:31:17Z

Author Name: Richard Duivenvoorde (@rduivenvoorde)

Also Master/QGIS3:

Qt5? generates bt itself? See below

rc/gui/qgscollapsiblegroupbox.cpp: 365: (updateStyle) [0ms] groupbox: mLayerRenderingGroupBox style:  offset: left=0 top=1 top2=4
QGIS died on signal 11[New LWP 4118]
[New LWP 4119]
[New LWP 4120]
[New LWP 4125]
[New LWP 4126]
[New LWP 4127]
[New LWP 4130]
[New LWP 4131]
[New LWP 4132]
[New LWP 4133]
[New LWP 4134]
[New LWP 4135]
[New LWP 4148]
[New LWP 4161]
[New LWP 4163]
[New LWP 4168]
[New LWP 4169]
[New LWP 4170]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f3ff55e1e4b in __GI___waitpid (pid=4171, stat_loc=0x7ffc83ae5cd4, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
29	../sysdeps/unix/sysv/linux/waitpid.c: No such file or directory.
[Current thread is 1 (Thread 0x7f3fdc2d6200 (LWP 4117))]
#_0  0x00007f3ff55e1e4b in __GI___waitpid (pid=4171, stat_loc=0x7ffc83ae5cd4, options=0) at ../sysdeps/unix/sysv/linux/waitpid.c:29
        resultvar = 18446744073709551104
        sc_cancel_oldtype = 0
#_1  0x000055d4aa3b9f09 in qgisCrash (signal=11) at /home/richard/dev/qgis/git/qgis/src/app/main.cpp:347
        status = 0
        pidstr = "--pid=4117\\000\\366?\\177\\000\\000\\364Z\\256\\203\\374\\177\\000\\000\\300[\\256\\203\\374\\177\\000"
        gdbpid = 4171
        exename = "/home/richard/apps/qgis3/master/debug/bin/qgis\\000\\000\\200\\000\\000\\000\\000\\000\\000\\000X\\353\\341\\253\\324U\\000\\000`\\\\\\256\\203\\374\\177\\000\\000P\\257ū\\324U\\000\\000\\005", '\\000' <repeats 15 times>, "\\210\\\\\\256\\203\\374\\177\\000\\000a\\316;\\377?\\177\\000\\000\\033\\000\\000\\000\\000\\000\\000\\000P\\257ū\\324U\\000\\000\\005", '\\000' <repeats 15 times>, "\\001\\000\\000\\000\\000\\000\\000\\000\\000\\350\\341\\253\\324U\\000\\000\\005\\000\\000\\000\\000\\000\\000\\000!", '\\000' <repeats 15 times>, "X\\353\\341\\253\\324U\\000\\000\\320[\\256\\203\\374\\177\\000\\000\\000+"...
        len = 46
#2  <signal handler called>
No locals.
#_3  0x00007f3ffdc71087 in QgsCategorizedSymbolRendererWidget::cleanUpSymbolSelector (this=0x55d4b309af70, container=0x55d4b4481a00) at /home/richard/dev/qgis/git/qgis/src/gui/symbology-ng/qgscategorizedsymbolrendererwidget.cpp:948
        dlg = 0x55d4b4481a00
#_4  0x00007f3ffe10319b in QgsCategorizedSymbolRendererWidget::qt_static_metacall (_o=0x55d4b309af70, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0x7ffc83ae6410) at /home/richard/dev/qgis/git/qgis/build/src/gui/symbology-ng/moc_qgscategorizedsymbolrendererwidget.cpp:308
        _t = 0x55d4b309af70
#_5  0x00007f3ff6419c89 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#_6  0x00007f3ffe0f752f in QgsPanelWidget::panelAccepted (this=0x55d4b4481a00, _t1=0x55d4b4481a00) at /home/richard/dev/qgis/git/qgis/build/src/gui/moc_qgspanelwidget.cpp:188
        _a = {0x0, 0x7ffc83ae6400}
#_7  0x00007f3ffe00b92b in QgsPanelWidget::acceptPanel (this=0x55d4b4481a00) at /home/richard/dev/qgis/git/qgis/src/gui/qgspanelwidget.cpp:100
No locals.
#_8  0x00007f3ffe00b962 in QgsPanelWidget::keyPressEvent (this=0x55d4b4481a00, event=0x7ffc83ae6c40) at /home/richard/dev/qgis/git/qgis/src/gui/qgspanelwidget.cpp:107
No locals.
#_9  0x00007f3ff94ee8d7 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_10 0x00007f3ff94a6b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_11 0x00007f3ff94afcb6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_12 0x00007f3ffc33ab85 in QgsApplication::notify (this=0x7ffc83ae9e80, receiver=0x55d4b28186f0, event=0x7ffc83ae6c40) at /home/richard/dev/qgis/git/qgis/src/core/qgsapplication.cpp:297
        done = true
        __FUNCTION__ = "notify"
#_13 0x00007f3ff63ee090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#_14 0x00007f3ff950b28b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_15 0x00007f3ff94a6b2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_16 0x00007f3ff94ae2e1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_17 0x00007f3ffc33ab85 in QgsApplication::notify (this=0x7ffc83ae9e80, receiver=0x55d4b44aafc0, event=0x7ffc83ae6c40) at /home/richard/dev/qgis/git/qgis/src/core/qgsapplication.cpp:297
        done = true
        __FUNCTION__ = "notify"
#_18 0x00007f3ff63ee090 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#_19 0x00007f3ff8f080f8 in QGuiApplicationPrivate::processKeyEvent(QWindowSystemInterfacePrivate::KeyEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#_20 0x00007f3ff8f0d665 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#_21 0x00007f3ff8eeb61b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#_22 0x00007f3fdc0834e0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
No symbol table info available.
#_23 0x00007f3ff29727f7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#_24 0x00007f3ff2972a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#_25 0x00007f3ff2972b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#_26 0x00007f3ff64426df in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#_27 0x00007f3ff63ec07a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#_28 0x00007f3ff9694df7 in QDialog::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#_29 0x00007f3ffe00b774 in QgsPanelWidget::openPanel (this=0x55d4b309af70, panel=0x55d4b4481a00) at /home/richard/dev/qgis/git/qgis/src/gui/qgspanelwidget.cpp:92
        dlg = 0x55d4b449b200
        key = {static null = {<No data fields>}, d = 0x55d4b449c460}
        settings = <incomplete type>
        buttonBox = 0x55d4b4552660
#_30 0x00007f3ffdc6eb6c in QgsCategorizedSymbolRendererWidget::changeCategorizedSymbol (this=0x55d4b309af70) at /home/richard/dev/qgis/git/qgis/src/gui/symbology-ng/qgscategorizedsymbolrendererwidget.cpp:549
        newSymbol = 0x55d4b2db0af0
        dlg = 0x55d4b4481a00
#_31 0x00007f3ffe1030b4 in QgsCategorizedSymbolRendererWidget::qt_static_metacall (_o=0x55d4b309af70, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffc83ae7280) at /home/richard/dev/qgis/git/qgis/build/src/gui/symbology-ng/moc_qgscategorizedsymbolrendererwidget.cpp:296
        _t = 0x55d4b309af70
#_32 0x00007f3ff6419c89 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5

qgib · 2016-12-08T23:35:41Z

Author Name: Richard Duivenvoorde (@rduivenvoorde)

subject was changed from Escaping out of QGIS to Escaping out of Dialog causes QGIS to crash

qgib · 2016-12-26T06:23:33Z

Author Name: Pedro Venâncio (Pedro Venâncio)

I can confirm this also in Windows. To replicate:

Add a shapefile / PostGIS layer;
Select the layer in TOC --> Layer Properties;
Style --> Categorized;
Column --> (choose one) --> Classify;
Double click on one Class symbol;
Click 'Esc/Escape' to close Symbol Selector window --->>> I get a crash here.
If I use 'Ok' or 'close' button, instead of 'Esc', then no problem.

This happens on QGIS 2.18.2 and master, but not on QGIS 2.14.10 (all from OSGeo4W 64bits), so it seems like a regression.

qgib · 2016-12-26T08:46:43Z

Author Name: Giovanni Manghi (@gioman)

version was changed from 2.18.0 to 2.18.2
os_version was changed from Jessie to
priority_id was changed from High to Severe/Regression
fixed_version_id was changed from Future Release - High Priority to Version 2.18
operating_system was changed from linux to

qgib · 2017-01-13T02:56:59Z

Author Name: Paul Day (Paul Day)

I am seeing the same sort of problem in 64-bit QGIS 2.18.2 on Windows 7.

Reproducible in both new (unsaved) project and in existing projects. Have tested with line and point vector layers.

Minidump occurs with Catagorised symbology from the Symbol Selector when pressing Esc then OK, or if Esc is pressed more than once.

qgib · 2017-02-28T13:23:43Z

Author Name: Giovanni Manghi (@gioman)

Still true on 2.18.4

version was changed from 2.18.2 to 2.18.4

qgib · 2017-04-30T15:08:19Z

Author Name: Giovanni Manghi (@gioman)

regression was configured as 1

qgib · 2017-04-30T15:08:56Z

Author Name: Giovanni Manghi (@gioman)

priority_id was changed from Severe/Regression to High

qgib · 2017-04-30T23:10:55Z

Author Name: Giovanni Manghi (@gioman)

easy_fix was configured as 0

qgib · 2017-05-12T09:20:13Z

Author Name: Matthias Kuhn (@m-kuhn)

description was changed from Pressing Esc in at least one dialog can cause QGIS to crash.

The known case can be replicated as follows:

I have a layer (shape in this case) with the properties open. I double click on the Symbol to get the Symbol Selector. Then I want to get out of the dialog and reach for Esc to close it. Nothing happens so I press Esc again and QGIS as well as the dialog closes up.

This is on Jessie, with 2.18.1.

There may be others, and if so, could they be added to this bug report. to Pressing Esc in at least one dialog can cause QGIS to crash.

The known case can be replicated as follows:

I have a layer (shape in this case) with the properties open. I double click on the Symbol to get the Symbol Selector. Then I want to get out of the dialog and reach for Esc to close it. Nothing happens so I press Esc again and QGIS as well as the dialog closes up.

This is on Jessie, with 2.18.1.

There may be others, and if so, could they be added to this bug report.

assigned_to_id was configured as Matthias Kuhn

qgib · 2017-05-12T09:38:44Z

Author Name: Matthias Kuhn (@m-kuhn)

Not reproducible on master

qgib · 2017-05-12T09:41:34Z

Author Name: Giovanni Manghi (@gioman)

Matthias Kuhn wrote:

Not reproducible on master

let me check it again.

qgib · 2017-05-12T10:02:10Z

Author Name: Giovanni Manghi (@gioman)

Matthias Kuhn wrote:

Not reproducible on master

master ok now, 2.18.7 is NOT.

version was changed from 2.18.4 to 2.18.7

qgib · 2017-05-12T12:06:26Z

Author Name: Giovanni Manghi (@gioman)

Giovanni Manghi wrote:

Matthias Kuhn wrote:

Not reproducible on master

master ok now, 2.18.7 is NOT.

PR here
#4542

qgib · 2017-05-12T13:37:01Z

Author Name: Anónimo (Anónimo)

Applied in changeset aa0ce1c.

done_ratio was changed from 0 to 100
status_id was changed from Open to Closed

qgib · 2017-05-12T13:38:26Z

Author Name: Giovanni Manghi (@gioman)

resolution was changed from to fixed/implemented

qgib closed this as completed May 12, 2017

qgib added Bug Either a bug report, or a bug fix. Let's hope for the latter! High Priority GUI/UX Related to QGIS application GUI or User Experience Crash/Data Corruption Regression Something which used to work, but doesn't anymore labels May 25, 2019

qgib added this to the Version 2.18 milestone May 25, 2019

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Escaping out of Dialog causes QGIS to crash #23877

Escaping out of Dialog causes QGIS to crash #23877

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Escaping out of Dialog causes QGIS to crash #23877

Escaping out of Dialog causes QGIS to crash #23877

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