Re: [Boost-users] BGL: invalidated/changing vertex_descriptor?

I don't know about the prepended 0x20.  What modifications, if any, are you doing to the graph before checking the edge pairs?  The invalidation rules are on the documentation page for adjacency_list; listS doesn't cause invalidations too often, though.  Can you please post a small example of something that breaks?  Do Valgrind and/or _GLIBCXX_DEBUG show anything?

It appears that my problems were due to calling remove_vertex() on the same vertex-descriptor twice. I tried but failed to reproduce this 0x20 behavior in a small example program... AW