Hello, I think I found a bug in the graph parallel library. I have a bidirectional adjacency list which has some self loop edges. When I try to delete them with remove_edge_if (or remove_out_edge_if or remove_in_edge_if) the edges are deleted, but it seems that some reference gets broken in the graph. If I iterate over the in_edges a reference to a self loop is found. But it does not happen if I iterate over the out_edges. If the graph is written in a graphviz file the self loop edges does not appear. I think there is some broken reference into the adjacency list that keeps the in_edges. I have two different pieces of code (one with pbgl and the other with bgl). They do the same, create a graph, delete the self-edges and print the in_edges. Could someone have a look at this problem? We want to use this library in our research but with this problem will not be possible. Thank you pbgl_in_edges.cpp <http://boost.2283326.n4.nabble.com/file/n4643903/pbgl_in_edges.cpp> bgl_in_edges.cpp <http://boost.2283326.n4.nabble.com/file/n4643903/bgl_in_edges.cpp> -- View this message in context: http://boost.2283326.n4.nabble.com/Graph-Parallel-PBGL-Bug-deleting-self-loo... Sent from the Boost - Dev mailing list archive at Nabble.com.