Hello
I am using the dot language to create a graph using Boost. My Graphs are huge and I am trying to delete vertices and edges that are no longer used in my program.
Under boost/graph/graphviz.hpp I added a function to remove a vertex and its edges in the mutate_graph class, I then go ahead and implement it under the mutate_graph_impl class:
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
In my main program my graph is declared like this:
adjacency_list<listS, listS, directedS,property<vertex_name_t, std::string>, property<edge_weight_t, int> > Graph;
and go ahead and initiate graphviz like this:
read_graphviz(in, g, dp, "id");
Am I breaking some pretty obvious rules? As I am pretty lost. Any advice/suggestions and comments is very much appreciated.
Thanks in advance!