I reported a bug back in September:

https://bugs.kde.org/show_bug.cgi?id=352230

but there hasn't been any action or response. Here's the issue.

I get a very regularly occurring segfault when clicking the 100% button to "view a document at its actual size". The bug occurs roughly 80% of the time. Bug also occurs when using the plus and minus buttons to zoom the image, although less frequently. Unfortunately I use Gwenview for hours a day, so not being able to use these buttons means I have to click on the zoom slider to increase or decrease the image size. Gwenview does not crash when click or using the slider to zoom.

Here is the crash report:

Code: Select all

Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xaf9b87c0 (LWP 23605))]

Thread 3 (Thread 0xaf592b40 (LWP 23606)):
#0  0xb774fbe8 in __kernel_vsyscall ()
#1  0xb55393db in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb3e6e3ad in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3  0xb3e703fb in xcb_wait_for_event () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xaf6b12e3 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#5  0xb581848b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb46bc1aa in start_thread (arg=0xaf592b40) at pthread_create.c:333
#7  0xb5543fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 2 (Thread 0xac2d3b40 (LWP 23610)):
#0  0xb774fbe8 in __kernel_vsyscall ()
#1  0xb46c1626 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:245
#2  0xb5550d3a in __pthread_cond_timedwait (cond=0x9ed7518, mutex=0x9ed7500, abstime=0xac2d31b8) at forward.c:162
#3  0xb581963c in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#4  0xb5814df8 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb581848b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb46bc1aa in start_thread (arg=0xac2d3b40) at pthread_create.c:333
#7  0xb5543fde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 1 (Thread 0xaf9b87c0 (LWP 23605)):
[KCrash Handler]
#7  0xb502d269 in ?? () from /usr/lib/i386-linux-gnu/liblcms2.so.2
#8  0xb5034080 in ?? () from /usr/lib/i386-linux-gnu/liblcms2.so.2
#9  0xb5035049 in cmsDoTransform () from /usr/lib/i386-linux-gnu/liblcms2.so.2
#10 0xb75cc154 in Gwenview::RasterImageView::updateFromScaler (this=0xa0d2c20, zoomedImageLeft=-230, zoomedImageTop=532, image=...) at ../../lib/documentview/rasterimageview.cpp:322
#11 0xb75cd0d5 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1, 2>, QtPrivate::List<int, int, QImage const&>, void, void (Gwenview::RasterImageView::*)(int, int, QImage const&)>::call (arg=0xbfda836c, o=0xa0d2c20, f=<optimized out>) at /usr/include/i386-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:500
#12 QtPrivate::FunctionPointer<void (Gwenview::RasterImageView::*)(int, int, QImage const&)>::call<QtPrivate::List<int, int, QImage const&>, void> (arg=0xbfda836c, o=0xa0d2c20, f=<optimized out>) at /usr/include/i386-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:519
#13 QtPrivate::QSlotObject<void (Gwenview::RasterImageView::*)(int, int, QImage const&), QtPrivate::List<int, int, QImage const&>, void>::impl (which=1, this_=0xa0d28a0, r=0xa0d2c20, a=0xbfda836c, ret=0x0) at /usr/include/i386-linux-gnu/qt5/QtCore/qobject_impl.h:143
#14 0xb5a1fde0 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#15 0xb5a206bd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#16 0xb7635921 in Gwenview::ImageScaler::scaledRect (this=0xa0f67d8, _t1=-230, _t2=532, _t3=...) at moc_imagescaler.cpp:134
#17 0xb75eeb10 in Gwenview::ImageScaler::scaleRect (this=0xa0f67d8, rect=...) at ../../lib/imagescaler.cpp:132
#18 0xb75ef36d in Gwenview::ImageScaler::doScale (this=0xa0f67d8) at ../../lib/imagescaler.cpp:122
#19 0xb75ef459 in Gwenview::ImageScaler::setDestinationRegion (this=0xa0f67d8, region=...) at ../../lib/imagescaler.cpp:102
#20 0xb75caabf in Gwenview::RasterImageViewPrivate::setScalerRegionToVisibleRect (this=0xa0d3918) at ../../lib/documentview/rasterimageview.cpp:151
#21 Gwenview::RasterImageView::updateBuffer (this=0xa0d2c20, region=...) at ../../lib/documentview/rasterimageview.cpp:443
#22 0xb75cac96 in Gwenview::RasterImageView::onZoomChanged (this=0xa0d2c20) at ../../lib/documentview/rasterimageview.cpp:434
#23 0xb75bc85c in Gwenview::AbstractImageView::setZoom (this=0xa0d2c20, zoom=1, _center=..., updateType=Gwenview::AbstractImageView::UpdateIfNecessary) at ../../lib/documentview/abstractimageview.cpp:220
#24 0xb75cd824 in Gwenview::RasterImageViewAdapter::setZoom (this=0xa0fa640, zoom=1, center=...) at ../../lib/documentview/rasterimageviewadapter.cpp:103
#25 0xb75c2a00 in Gwenview::DocumentView::zoomActualSize (this=0x9edd178) at ../../lib/documentview/documentview.cpp:497
#26 0xb763a309 in Gwenview::DocumentView::qt_static_metacall (_o=0x9edd178, _c=QMetaObject::InvokeMetaMethod, _id=25, _a=0xbfda8874) at moc_documentview.cpp:234
#27 0xb5a201c1 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#28 0xb5a206bd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#29 0xb63b4969 in QAction::triggered(bool) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#30 0xb63b7047 in QAction::activate(QAction::ActionEvent) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#31 0xb65a07ab in QToolButton::nextCheckState() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#32 0xb64c89fb in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#33 0xb64c8b6f in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#34 0xb65a0731 in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#35 0xb64074ca in QWidget::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#36 0xb64c9a60 in QAbstractButton::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#37 0xb65a0885 in QToolButton::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#38 0xb63bf3aa in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#39 0xb63c50f2 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#40 0xb59f025f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#41 0xb63c40a8 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#42 0xb64243a8 in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#43 0xb64270da in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#44 0xb63bf3aa in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#45 0xb63c4a40 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#46 0xb59f025f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#47 0xb5e095ff in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#48 0xb5e0b449 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#49 0xb5decf47 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#50 0xaf6e662e in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#51 0xb4576ce9 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#52 0xb4576f89 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#53 0xb4577054 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#54 0xb5a48813 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#55 0xaf6e6801 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#56 0xb59ed383 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#57 0xb59ed7da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#58 0xb59f5dd5 in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#59 0xb5e00691 in QGuiApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#60 0xb63bb274 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#61 0x0807c5a1 in main (argc=1, argv=0xbfda9684) at ../../app/main.cpp:166


It looks like a bug in Qt, but I'm not very good at reading these things. Does anyone have any ideas for addressing this problem? Thanks in advance.

Hi,

try installing the dev package of liblcms2 ... should be named liblcms2-dev or similar. After that, the backtrace should be more complete (the first two lines in the Thread 1 section). Please add that new backtrace to the report. ... Not sure if Gwenview is actively maintained at the moment. So there might not be any answer.

You might want to file a report with your distro packagers. They might know of crashes in some combination of applications with liblcms2 or so.

Regards,
Frederik

Here's the backtrace with liblcms2-dbg installed:

Code: Select all

Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xaf9e37c0 (LWP 8382))]

Thread 3 (Thread 0xaf5bdb40 (LWP 8383)):
#0  0xb777abe8 in __kernel_vsyscall ()
#1  0xb55643db in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb3e993ad in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3  0xb3e9b3fb in xcb_wait_for_event () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4  0xaf6dc2e3 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#5  0xb584348b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb46e71aa in start_thread (arg=0xaf5bdb40) at pthread_create.c:333
#7  0xb556efde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 2 (Thread 0xac2fab40 (LWP 8388)):
#0  0xb777abe8 in __kernel_vsyscall ()
#1  0xb46ec626 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:245
#2  0xb557bd3a in __pthread_cond_timedwait (cond=0x9d01a20, mutex=0x9d01a08, abstime=0xac2fa1b8) at forward.c:162
#3  0xb584463c in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#4  0xb583fdf8 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#5  0xb584348b in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#6  0xb46e71aa in start_thread (arg=0xac2fab40) at pthread_create.c:333
#7  0xb556efde in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:122

Thread 1 (Thread 0xaf9e37c0 (LWP 8382)):
[KCrash Handler]
#7  Unroll3BytesSkip1SwapSwapFirst (info=0x9e42af8, wIn=0xbfe9465c, accum=0xab614000 <error: Cannot access memory at address 0xab614000>, Stride=1689600) at cmspack.c:296
#8  0xb505f080 in PrecalculatedXFORM (p=0x9e42af8, in=0xab1c2008, out=0xab1c2008, Size=1689600, Stride=1689600) at cmsxform.c:319
#9  0xb5060049 in cmsDoTransform (Transform=0x9e42af8, InputBuffer=0xab1c2008, OutputBuffer=0xab1c2008, Size=1689600) at cmsxform.c:183
#10 0xb75f7154 in Gwenview::RasterImageView::updateFromScaler (this=0x9e9e378, zoomedImageLeft=-230, zoomedImageTop=532, image=...) at ../../lib/documentview/rasterimageview.cpp:322
#11 0xb75f80d5 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0, 1, 2>, QtPrivate::List<int, int, QImage const&>, void, void (Gwenview::RasterImageView::*)(int, int, QImage const&)>::call (arg=0xbfe948cc, o=0x9e9e378, f=<optimized out>) at /usr/include/i386-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:500
#12 QtPrivate::FunctionPointer<void (Gwenview::RasterImageView::*)(int, int, QImage const&)>::call<QtPrivate::List<int, int, QImage const&>, void> (arg=0xbfe948cc, o=0x9e9e378, f=<optimized out>) at /usr/include/i386-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:519
#13 QtPrivate::QSlotObject<void (Gwenview::RasterImageView::*)(int, int, QImage const&), QtPrivate::List<int, int, QImage const&>, void>::impl (which=1, this_=0x9e754d8, r=0x9e9e378, a=0xbfe948cc, ret=0x0) at /usr/include/i386-linux-gnu/qt5/QtCore/qobject_impl.h:143
#14 0xb5a4ade0 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#15 0xb5a4b6bd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#16 0xb7660921 in Gwenview::ImageScaler::scaledRect (this=0x9cd0cf0, _t1=-230, _t2=532, _t3=...) at moc_imagescaler.cpp:134
#17 0xb7619b10 in Gwenview::ImageScaler::scaleRect (this=0x9cd0cf0, rect=...) at ../../lib/imagescaler.cpp:132
#18 0xb761a36d in Gwenview::ImageScaler::doScale (this=0x9cd0cf0) at ../../lib/imagescaler.cpp:122
#19 0xb761a459 in Gwenview::ImageScaler::setDestinationRegion (this=0x9cd0cf0, region=...) at ../../lib/imagescaler.cpp:102
#20 0xb75f5abf in Gwenview::RasterImageViewPrivate::setScalerRegionToVisibleRect (this=0x9e2c1c0) at ../../lib/documentview/rasterimageview.cpp:151
#21 Gwenview::RasterImageView::updateBuffer (this=0x9e9e378, region=...) at ../../lib/documentview/rasterimageview.cpp:443
#22 0xb75f5c96 in Gwenview::RasterImageView::onZoomChanged (this=0x9e9e378) at ../../lib/documentview/rasterimageview.cpp:434
#23 0xb75e785c in Gwenview::AbstractImageView::setZoom (this=0x9e9e378, zoom=1, _center=..., updateType=Gwenview::AbstractImageView::UpdateIfNecessary) at ../../lib/documentview/abstractimageview.cpp:220
#24 0xb75f8824 in Gwenview::RasterImageViewAdapter::setZoom (this=0x9e819a8, zoom=1, center=...) at ../../lib/documentview/rasterimageviewadapter.cpp:103
#25 0xb75eda00 in Gwenview::DocumentView::zoomActualSize (this=0x9e2e210) at ../../lib/documentview/documentview.cpp:497
#26 0xb7665309 in Gwenview::DocumentView::qt_static_metacall (_o=0x9e2e210, _c=QMetaObject::InvokeMetaMethod, _id=25, _a=0xbfe94dd4) at moc_documentview.cpp:234
#27 0xb5a4b1c1 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#28 0xb5a4b6bd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#29 0xb63df969 in QAction::triggered(bool) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#30 0xb63e2047 in QAction::activate(QAction::ActionEvent) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#31 0xb65cb7ab in QToolButton::nextCheckState() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#32 0xb64f39fb in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#33 0xb64f3b6f in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#34 0xb65cb731 in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#35 0xb64324ca in QWidget::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#36 0xb64f4a60 in QAbstractButton::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#37 0xb65cb885 in QToolButton::event(QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#38 0xb63ea3aa in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#39 0xb63f00f2 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#40 0xb5a1b25f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#41 0xb63ef0a8 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#42 0xb644f3a8 in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#43 0xb64520da in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#44 0xb63ea3aa in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#45 0xb63efa40 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#46 0xb5a1b25f in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#47 0xb5e345ff in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#48 0xb5e36449 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#49 0xb5e17f47 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#50 0xaf71162e in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#51 0xb45a1ce9 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#52 0xb45a1f89 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#53 0xb45a2054 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#54 0xb5a73813 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#55 0xaf711801 in ?? () from /usr/lib/i386-linux-gnu/libQt5XcbQpa.so.5
#56 0xb5a18383 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#57 0xb5a187da in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#58 0xb5a20dd5 in QCoreApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5
#59 0xb5e2b691 in QGuiApplication::exec() () from /usr/lib/i386-linux-gnu/sse2/libQt5Gui.so.5
#60 0xb63e6274 in QApplication::exec() () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#61 0x0807c5a1 in main (argc=1, argv=0xbfe95be4) at ../../app/main.cpp:166