- xbt_assert(routing_platf->root_ == nullptr, "All defined components must belong to a AS");
- routing_platf->root_ = new_as;
+ xbt_assert(simgrid::s4u::Engine::instance()->pimpl->rootAs_ == nullptr,
+ "All defined components must belong to a AS");
+ simgrid::s4u::Engine::instance()->pimpl->rootAs_ = new_as;