What you are doing looks right. So there's probably a bug somewhere... On Sun, 15 Sep 2002 yg-boost-users@gmane.org wrote: yg-boo> Hello, yg-boo> yg-boo> Q: one can construct a graph using adjacency_list<> and then immediately yg-boo> iterate over the vertices, right? yg-boo> yg-boo> The program below writes out the numbers 0 to 9 when compiled using yg-boo> gcc 3.2 on linux. Ditto on my IRIX system, *unless* I try to yg-boo> optimize. I expect this is a GCC optimizer bug, but I just want to be yg-boo> sure I haven't overlooked something in the boost docs. yg-boo> yg-boo> Thanks, yg-boo> -S yg-boo> yg-boo> yg-boo> #include <iostream> yg-boo> yg-boo> #include <boost/graph/graph_traits.hpp> yg-boo> #include <boost/graph/adjacency_list.hpp> yg-boo> yg-boo> yg-boo> typedef boost::adjacency_list< boost::vecS, boost::vecS, yg-boo> boost::undirectedS, yg-boo> boost::no_property, yg-boo> boost::property<boost::edge_weight_t,float> yg-boo> > Graph; yg-boo> yg-boo> typedef boost::graph_traits<Graph>::vertex_descriptor vertex_descriptor; yg-boo> typedef boost::graph_traits<Graph>::edge_descriptor edge_descriptor; yg-boo> yg-boo> yg-boo> yg-boo> int main() yg-boo> { yg-boo> Graph g( 10 ); yg-boo> boost::graph_traits<Graph>::vertex_iterator ui, ui_end; yg-boo> yg-boo> for (boost::tie(ui, ui_end) = boost::vertices(g); ui != ui_end; ++ui) { yg-boo> std::cout << "*ui = " << *ui << std::endl; yg-boo> } yg-boo> yg-boo> return 0; yg-boo> } yg-boo> yg-boo> yg-boo> yg-boo> yg-boo> yg-boo> Info: <http://www.boost.org> yg-boo> Wiki: <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl> yg-boo> Unsubscribe: <mailto:boost-users-unsubscribe@yahoogroups.com> yg-boo> yg-boo> yg-boo> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ yg-boo> yg-boo> ---------------------------------------------------------------------- Jeremy Siek http://php.indiana.edu/~jsiek/ Ph.D. Student, Indiana Univ. B'ton email: jsiek@osl.iu.edu C++ Booster (http://www.boost.org) office phone: (812) 855-3608 ----------------------------------------------------------------------