id summary reporter owner description type status milestone component version severity resolution keywords cc 11714 [subgraph.hpp] add_vertex(u_global, g) on a subgraph does not recursively add to parent subgraphs s.hammer@… Jeremiah Willcock "Hello, One of the invariants of an induced subgraph is: - If vertex u is in subgraph g, then u must be in g.parent(). This is true if you call add_vertex(g) on a subgraph to create a new vertex. If you however choose to add a already existing global vertex to the subgraph, this addition is not propagated to the parents of this subgraph. I assume this is a bug and fixed it. The patch is on github: https://github.com/j-4/graph/tree/fix-add_vertex-subgraph I also created a pull request! Thanks, Stefan PS: Attached is a unit test which fails due to this issue and runs through with the patched version!" Bugs new To Be Determined graph Boost Development Trunk Problem subgraph