Method isState

ui/deferredtreeview.cpp:44–50

keep it working in UBSAN

#if defined(Q_CC_CLANG) || defined(Q_CC_GNU)
// keep it working in UBSAN
__attribute__((no_sanitize("vptr")))
#endif
bool HeaderView::isState(State state) const
{
    QHeaderViewPrivate *d = reinterpret_cast<QHeaderViewPrivate *>(d_ptr.data());
    return d->state == QHeaderViewPrivate::State(state);
}

DeferredTreeView::DeferredTreeView(QWidget *parent)
    : QTreeView(parent)