Hello, Q: one can construct a graph using adjacency_list<>(N) and then immediately iterate over the vertices, right? The program below writes out the numbers 0 to 9 when compiled using gcc 3.2 on linux. Ditto on my IRIX system, *unless* I try to optimize. I expect this is a GCC optimizer bug, but I just want to be sure I haven't overlooked something in the boost docs. Thanks, -S #include <iostream> #include #include typedef boost::adjacency_list< boost::vecS, boost::vecS, boost::undirectedS, boost::no_property, boost::propertyboost::edge_weight_t,float

Graph;

int main() { Graph g( 10 ); boost::graph_traits<Graph>::vertex_iterator ui, ui_end; for (boost::tie(ui, ui_end) = boost::vertices(g); ui != ui_end; ++ui) { std::cout << "*ui = " << *ui << std::endl; } return 0; }