C++/STL Graphviz and Boost - Seg Fault Problem

Question

I am using the dot language to create a graph using Boost. My Graphs are huge and I am trying to delete graphs that are no longer used.

Under boost/graph/graphviz.hpp I added a function to remove a vertex:

    virtual void
  do_remove_vertex( const node_t& node)
  {
    bgl_vertex_t v = bgl_nodes[node];
    clear_vertex(v,graph_);
    remove_vertex(v,graph_);
  }

However I keep getting a segfault on the call to clear vertex, I ran it into gdb and here is the back trace (i hope this is not to long)

Program received signal SIGSEGV, Segmentation fault.
0x000000000040b87f in std::_List_base<boost::detail::sep_<void*, boost::property<boost::edge_weight_t, int, boost::no_property> >, std::allocator<boost::detail::sep_<void*, boost::property<boost::edge_weight_t, int, boost::no_property> > > >::_M_clear (this=0x0) at /usr/include/c++/4.4/bits/list.tcc:68
68       _Node* __cur = static_cast<_Node*>(this->_M_impl._M_node._M_next);
(gdb) bt
#0  0x000000000040b87f in std::_List_base<boost::detail::sep_<void*, boost::property<boost::edge_weight_t, int, boost::no_property> >, std::allocator<boost::detail::sep_<void*, boost::property<boost::edge_weight_t, int, boost::no_property> > > >::_M_clear (this=0x0) at /usr/include/c++/4.4/bits/list.tcc:68
#1  0x00000000004119d2 in std::list<boost::detail::sep_<void*, boost::property<boost::edge_weight_t, int, boost::no_property> >, std::allocator<boost::detail::sep_<void*, boost::property<boost::edge_weight_t, int, boost::no_property> > > >::clear (this=0x0) at /usr/include/c++/4.4/bits/stl_list.h:1132
#2  0x000000000040fac4 in boost::clear_vertex<boost::detail::adj_list_gen<boost::adjacency_list<boost::listS, boost::listS, boost::directedS, boost::property<boost::vertex_name_t, std::string, boost::no_property>, boost::property<boost::edge_weight_t, int, boost::no_property>, boost::no_property, boost::listS>, boost::listS, boost::listS, boost::directedS, boost::property<boost::vertex_name_t, std::string, boost::no_property>, boost::property<boost::edge_weight_t, int, boost::no_property>, boost::no_property, boost::listS>::config> (u=0x0, g_=...) at boost_1_43_0/boost/graph/detail/adjacency_list.hpp:633
#3  0x000000000040e7a5 in boost::detail::graph::mutate_graph_impl<boost::adjacency_list<boost::listS, boost::listS, boost::directedS, boost::property<boost::vertex_name_t, std::string, boost::no_property>, boost::property<boost::edge_weight_t, int, boost::no_property>, boost::no_property, boost::listS> >::do_remove_vertex (this=0x7fffffffe520, node=...)
    at boost_1_43_0/boost/graph/graphviz.hpp:767
#4  0x00007ffff7b6ab12 in boost::read_graphviz_detail::translate_results_to_graph (r=..., mg=0x7fffffffe520) at ../../../libs/graph/src/read_graphviz_new.cpp:782
#5  0x00007ffff7b6b314 in boost::detail::graph::read_graphviz_new (str=..., mg=0x7fffffffe520) at ../../../libs/graph/src/read_graphviz_new.cpp:830
#6  0x000000000040bc1f in boost::read_graphviz_new<boost::adjacency_list<boost::listS, boost::listS, boost::directedS, boost::property<boost::vertex_name_t, std::string, boost::no_property>, boost::property<boost::edge_weight_t, int, boost::no_property>, boost::no_property, boost::listS> > (str=..., graph=..., dp=..., node_id=...)
    at boost_1_43_0/boost/graph/detail/read_graphviz_new.hpp:103
#7  0x000000000040b243 in boost::read_graphviz<std::istream_iterator<char, char, std::char_traits<char>, long>, boost::adjacency_list<boost::listS, boost::listS, boost::directedS, boost::property<boost::vertex_name_t, std::string, boost::no_property>, boost::property<boost::edge_weight_t, int, boost::no_property>, boost::no_property, boost::listS> > (
    user_first=..., user_last=..., graph=..., dp=..., node_id=...) at boost_1_43_0/boost/graph/graphviz.hpp:910
#8  0x000000000040aa18 in boost::read_graphviz<boost::adjacency_list<boost::listS, boost::listS, boost::directedS, boost::property<boost::vertex_name_t, std::string, boost::no_property>, boost::property<boost::edge_weight_t, int, boost::no_property>, boost::no_property, boost::listS> > (in=..., graph=..., dp=..., node_id=...)
    at boost_1_43_0/boost/graph/graphviz.hpp:922
#9  0x00000000004086a9 in test_graph_read_write (filename=...) at graphviz.cpp:41
#10 0x0000000000408814 in main () at graphviz.cpp:52

Any Ideas??? As I am pretty lost.

Thanks in advance!

Answer 1

Problem was when Read Graphviz function reads in a dot file, it does NOT create the DFG in the same order, thus breaking my deleting function.