https://bugs.kde.org/show_bug.cgi?id=469945

Lynx3d <lynx.mw+...@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|REPORTED                    |CONFIRMED
                 CC|                            |lynx.mw+...@gmail.com

--- Comment #2 from Lynx3d <lynx.mw+...@gmail.com> ---
This is really strange, as between those commits only translations changed.
But I think you just failed to reproduce on the other build for whatever
reason, I have worked on line art for several hours with cdb36cb4f0 (own build)
just fine, and then started to do colors and it also started to crash after a
couple of brush strokes on each attempt.

I was able to get a backtrace (for some reason KCrash can't catch it, had to
run in gdb directly):

Thread 21 "Thread (pooled)" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffa8ffc640 (LWP 32308)]
0x00007ffff55e1a06 in QMapDataBase::rebalance(QMapNodeBase*) () from
/opt/qt515-kde/lib/libQt5Core.so.5
(gdb) bt
#0  0x00007ffff55e1a06 in QMapDataBase::rebalance(QMapNodeBase*) () at
/opt/qt515-kde/lib/libQt5Core.so.5
#1  0x00007ffff55e1fcc in QMapDataBase::createNode(int, int, QMapNodeBase*,
bool) () at /opt/qt515-kde/lib/libQt5Core.so.5
#2  0x00007ffff6fb43aa in QMapData<int, QMap<int, QMap<double, QImage> >
>::createNode(int const&, QMap<int, QMap<double, QImage> > const&,
QMapNode<int, QMap<int, QMap<double, QImage> > >*, bool)
    (this=0x55557cf83a80, k=@0x7fffa8ffb978: 33, v=..., parent=<optimized out>,
left=<optimized out>)
    at /opt/qt515-kde/include/QtCore/qmap.h:226
#3  0x00007ffff6fb4970 in QMap<int, QMap<int, QMap<double, QImage> >
>::insert(int const&, QMap<int, QMap<double, QImage> > const&)
    (avalue=..., akey=@0x7fffa8ffb978: 33, this=0x555571af54c0) at
/opt/qt515-kde/include/QtCore/qmap.h:733
#4  QMap<int, QMap<int, QMap<double, QImage> > >::operator[](int const&)
    (this=this@entry=0x555571af54c0, akey=akey@entry=@0x7fffa8ffb978: 33) at
/opt/qt515-kde/include/QtCore/qmap.h:683
#5  0x00007ffff6fa0995 in KisPaintDeviceCache::cacheThumbnail(int, int, double,
QImage)
    (image=<incomplete type>, oversample=<optimized out>, h=<optimized out>,
w=<optimized out>, this=0x555571af5438)
    at
/home/lynx/coding/krita/krita-git/libs/image/kis_paint_device_cache.h:114
#6  KisPaintDeviceCache::createThumbnail(int, int, double,
KoColorConversionTransformation::Intent,
QFlags<KoColorConversionTransformation::ConversionFlag>)
    (conversionFlags=...,
renderingIntent=KoColorConversionTransformation::IntentPerceptual,
oversample=1, h=36, w=33, this=0x555571af5438) at
/home/lynx/coding/krita/krita-git/libs/image/kis_paint_device_cache.h:94
#7  KisPaintDevice::createThumbnail(int, int, double,
KoColorConversionTransformation::Intent,
QFlags<KoColorConversionTransformation::ConversionFlag>)
    (this=<optimized out>, w=<optimized out>, h=<optimized out>, oversample=1,
renderingIntent=KoColorConversionTransformation::IntentPerceptual,
conversionFlags=...) at
/home/lynx/coding/krita/krita-git/libs/image/kis_paint_device.cc:1828
#8  0x00007ffff6fa0cf8 in KisPaintDevice::createThumbnail(int, int,
Qt::AspectRatioMode, double, KoColorConversionTransformation::Intent,
QFlags<KoColorConversionTransformation::ConversionFlag>)
    (this=0x555571af5310, maxw=maxw@entry=36, maxh=maxh@entry=36,
aspectRatioMode=aspectRatioMode@entry=Qt::KeepAspectRatio,
oversample=oversample@entry=1,
renderingIntent=renderingIntent@entry=KoColorConversionTransformation::IntentPerceptual,
conversionFlags=...)
    at /home/lynx/coding/krita/krita-git/libs/image/kis_paint_device.cc:1838
#9  0x00007ffff6efa6f8 in KisLayer::createThumbnail(int, int,
Qt::AspectRatioMode)
    (this=<optimized out>, w=36, h=36, aspectRatioMode=Qt::KeepAspectRatio) at
/opt/qt515-kde/include/QtCore/qflags.h:121
#10 0x00007ffff785f24a in
ThumbnailsStroke::initStrokeCallback()::{lambda(KisSharedPtr<KisNode>)#1}::operator()(KisSharedPtr<KisNode>)
 
onst::{lambda()#1}::operator()() (__closure=0x7fff8c089680) at
/home/lynx/coding/krita/krita-git/libs/ui/KisLayerThumbnailCache.cpp:71
#11 std::__invoke_impl<void,
ThumbnailsStroke::initStrokeCallback()::{lambda(KisSharedPtr<KisNode>)#1}::operator()(KisSharedPtr<KisNode>)
const::{lambda()#1}&>(std::__invoke_other,
ThumbnailsStroke::initStrokeCallback()::{lambda(KisSharedPtr<KisNode>)#1}::operator()(KisSharedPtr<KisNode>)
const::{lambda()#1}&) (__f=...) at /usr/include/c++/11/bits/invoke.h:61
#12 std::__invoke_r<void,
ThumbnailsStroke::initStrokeCallback()::{lambda(KisSharedPtr<KisNode>)#1}::operator()(KisSharedPtr<KisNode>)
const::{lambda()#1}&>(ThumbnailsStroke::initStrokeCallback()::{lambda(KisSharedPtr<KisNode>)#1}::operator()(KisSharedPtr<KisNode>)
const::{lambda()#1}&) (__fn=...) at /usr/include/c++/11/bits/invoke.h:111
#13 std::_Function_handler<void (),
ThumbnailsStroke::initStrokeCallback()::{lambda(KisSharedPtr<KisNode>)#1}::operator()(KisSharedPtr<KisNode>)
const::{lambda()#1}>::_M_invoke(std::_Any_data const&) (__functor=<optimized
out>)
    at /usr/include/c++/11/bits/std_function.h:290
#14 0x00007ffff6c7a180 in KisStrokeJob::run() (this=<optimized out>)
    at
/media/bigstuff/krita/build/libs/image/kritaimage_autogen/EWIEGA46WW/../../../../../../../../home/lynx/coding/krita/krita-git/libs/image/kis_stroke_job.h:32
#15 KisUpdateJobItem::runImpl() (this=0x5555729510b0)
    at
/media/bigstuff/krita/build/libs/image/kritaimage_autogen/EWIEGA46WW/../../../../../../../../home/lynx/coding/krita/krita-git/libs/image/kis_update_job_item.h:100
#16 KisUpdateJobItem::run() (this=0x5555729510b0)
    at
/media/bigstuff/krita/build/libs/image/kritaimage_autogen/EWIEGA46WW/../../../../../../../../home/lynx/coding/krita/krita-git/libs/image/kis_update_job_item.h:49
#17 0x00007ffff55a73e2 in  () at /opt/qt515-kde/lib/libQt5Core.so.5
#18 0x00007ffff55a4133 in  () at /opt/qt515-kde/lib/libQt5Core.so.5
#19 0x00007ffff50f7b43 in start_thread (arg=<optimized out>) at
./nptl/pthread_create.c:442
#20 0x00007ffff5189a00 in clone3 () at
../sysdeps/unix/sysv/linux/x86_64/clone3.S:81

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