QGIS » QGIS Application

I can confirm with the following stacktrace:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff7c396700 (LWP 15257)]
0x00007ffff3bbfd85 in QPointF::QPointF (this=0x7ffc7abae8b0) at /usr/include/qt4/QtCore/qpoint.h:271
271    inline QPointF::QPointF() : xp(0), yp(0) { }
(gdb) bt
#0  0x00007ffff3bbfd85 in QPointF::QPointF (this=0x7ffc7abae8b0) at /usr/include/qt4/QtCore/qpoint.h:271
#1  0x00007ffff3c3850c in QVector<QPointF>::QVector (this=0x7fff7c3952e0, asize=-804899190) at /usr/include/qt4/QtCore/qvector.h:422
#2  0x00007ffff3c375d0 in QPolygonF::QPolygonF (this=0x7fff7c3952e0, asize=-804899190) at /usr/include/qt4/QtGui/qpolygon.h:165
#3  0x00007ffff3c3376d in QgsFeatureRendererV2::_getPolygon (pts=..., holes=..., context=..., wkb=
    0x7fffd00fb799 "X\\361*\\375?W\\024A\\352\\212\\066\\006\\320_\\006A\\262\\263\\367\\001xY\\024A\\352\\212\\066\\006\\320_\\006A\\262\\263\\367\\001xY\\024A\\323\\177\\064\\371\\307c\\006AX\\361*\\375?W\\024A\\323\\177\\064\\371\\307c\\006AX\\361*\\375?W\\024A\\352\\212\\066\\006\\320_\\006A\
$\\225vyp@p", clipToExtent=true)
    at /home/sam/pacchetti_gis/QGIS/src/core/symbology-ng/qgsrendererv2.cpp:146
#4  0x00007ffff3c348b4 in QgsFeatureRendererV2::renderFeatureWithSymbol (this=0x69ab360, feature=..., symbol=0x69ac800, context=..., layer=-1, 
    selected=false, drawVertexMarker=false) at /home/sam/pacchetti_gis/QGIS/src/core/symbology-ng/qgsrendererv2.cpp:430
#5  0x00007ffff3c33f9c in QgsFeatureRendererV2::renderFeature (this=0x69ab360, feature=..., context=..., layer=-1, selected=false, 
    drawVertexMarker=false) at /home/sam/pacchetti_gis/QGIS/src/core/symbology-ng/qgsrendererv2.cpp:275
#6  0x00007ffff3fbb8bf in QgsVectorLayerRenderer::drawRendererV2 (this=0x5ebcf60, fit=...)
    at /home/sam/pacchetti_gis/QGIS/src/core/qgsvectorlayerrenderer.cpp:303
#7  0x00007ffff3fbafe6 in QgsVectorLayerRenderer::render (this=0x5ebcf60) at /home/sam/pacchetti_gis/QGIS/src/core/qgsvectorlayerrenderer.cpp:240
#8  0x00007ffff3e8728f in QgsMapRendererCustomPainterJob::doRender (this=0xb27600)
    at /home/sam/pacchetti_gis/QGIS/src/core/qgsmaprenderercustompainterjob.cpp:251
#9  0x00007ffff3e86f49 in QgsMapRendererCustomPainterJob::staticRender (self=0xb27600)
    at /home/sam/pacchetti_gis/QGIS/src/core/qgsmaprenderercustompainterjob.cpp:214
#10 0x00007ffff3e89e39 in QtConcurrent::StoredFunctorCall1<void, void (*)(QgsMapRendererCustomPainterJob*), QgsMapRendererCustomPainterJob*>::runFunctor (this=0x18dc220) at /usr/include/qt4/QtCore/qtconcurrentstoredfunctioncall.h:277
#11 0x00007ffff3e881b0 in QtConcurrent::RunFunctionTask<void>::run (this=0x18dc220) at /usr/include/qt4/QtCore/qtconcurrentrunbase.h:134
#12 0x00007ffff1fea6bd in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#13 0x00007ffff1ff6d0b in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007fffee77ab50 in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#15 0x00007fffeea6b95d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#16 0x0000000000000000 in ?? ()

PostgreSQL Client Version 9.2.5, PostGIS 2.2

using local simplification?

Jürgen, simplification was indeed enabled. Disabling it, did not resolve the problem but it took longer to crash.