Segmentation fault - MapPolygon

1  p2t::SweepContext::InitTriangulation                                       sweep_context.cpp              77  0x7fffab6a94f9 
2  p2t::Sweep::Triangulate                                                    sweep.cpp                      43  0x7fffab6a6748 
3  p2t::CDT::Triangulate                                                      cdt.cpp                        52  0x7fffab6a235f 
4  c2t::clip2tri::triangulateComplex                                          clip2tri.cpp                   264 0x7fffab6a0c6a 
5  c2t::clip2tri::triangulate                                                 clip2tri.cpp                   83  0x7fffab6a163c 
6  QGeoMapPolygonGeometry::updateScreenPoints                                 qdeclarativepolygonmapitem.cpp 290 0x7fffab66649a 
7  QDeclarativePolygonMapItem::updatePolish                                   qdeclarativepolygonmapitem.cpp 547 0x7fffab66765b 
8  QQuickWindowPrivate::polishItems()                                                                            0x7ffff6713d58 
9  ??                                                                                                            0x7ffff66dec4e 
10 QQuickWindow::event(QEvent *)                                                                                 0x7ffff671b75e 
11 QApplicationPrivate::notify_helper(QObject *, QEvent *)                                                       0x7ffff5b2bbdc 
12 QApplication::notify(QObject *, QEvent *)                                                                     0x7ffff5b328d0 
13 QCoreApplication::notifyInternal2(QObject *, QEvent *)                                                        0x7ffff454d0b0 
14 QWindowPrivate::deliverUpdateRequest()                                                                        0x7ffff53483ce 
15 QWindow::event(QEvent *)                                                                                      0x7ffff53488ce 
16 QQuickWindow::event(QEvent *)                                                                                 0x7ffff671b715 
17 QApplicationPrivate::notify_helper(QObject *, QEvent *)                                                       0x7ffff5b2bbdc 
18 QApplication::notify(QObject *, QEvent *)                                                                     0x7ffff5b328d0 
19 QCoreApplication::notifyInternal2(QObject *, QEvent *)                                                        0x7ffff454d0b0 
20 QTimerInfoList::activateTimers()                                                                              0x7ffff459948e 
21 ??                                                                                                            0x7ffff4599991 
22 g_main_context_dispatch                                                                                       0x7fffef084197 
23 ??                                                                                                            0x7fffef0843f0 
24 g_main_context_iteration                                                                                      0x7fffef08449c 
25 QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)                                    0x7ffff459a4f7 
26 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)                                                       0x7ffff454b39a 
27 QCoreApplication::exec()                                                                                      0x7ffff455317d