Wt

Wt::WAbstractItemView::modelHeaderDataChanged (this=0x7fffc409b2a0, orientation=<optimized out>, start=<optimized out>, end=0)
    at /home/ruppert/work/Wt/kdeforche-wt-a7f27d8/src/Wt/WAbstractItemView.C:929
929     WWidget *tw = hw->widget(hw->count() - 1);
(gdb) where
#0  Wt::WAbstractItemView::modelHeaderDataChanged (this=0x7fffc409b2a0, orientation=<optimized out>, start=<optimized out>, end=0)
    at /home/ruppert/work/Wt/kdeforche-wt-a7f27d8/src/Wt/WAbstractItemView.C:929
#1  0x00007ffff722876a in operator() (a5=..., a4=..., a3=..., a2=<optimized out>, a1=<optimized out>, a0=<optimized out>, 
    this=<optimized out>) at /opt/devel/x86_64-unknown-linux-gnu/boost-1.48/include/boost/function/function_template.hpp:760
#2  operator()<boost::signals::detail::connection_slot_pair> (slot=..., this=0x7ffff35b8190)
    at /opt/devel/x86_64-unknown-linux-gnu/boost-1.48/include/boost/signals/signal_template.hpp:119
#3  dereference (this=0x7ffff35b8150)

924   if (renderState_ < NeedRerenderHeader) {
925     if (orientation == Horizontal) {
926       for (int i = start; i <= end; ++i) {
927     WContainerWidget *hw
928       = dynamic_cast<WContainerWidget *>(headerWidget(i, true));
929     WWidget *tw = hw->widget(hw->count() - 1);
930     headerItemDelegate_->update(tw, headerModel_->index(0, i), 0);
931     tw->setInline(false);
932     tw->addStyleClass("Wt-label");
933       }

hw is here a null-pointer and core dumps... I added a "if(hw == 0) continue;" and it works...

Regards,

Stefan