Re: [Boost-users] Proper way to change a cached shared pointer

4 Apr 2007

      On Wed, 2007-04-04 at 04:33 +0300, Peter Dimov wrote:
...
...
Address 0x4389BC0 is 8 bytes inside a block of size 60 alloc'd
...
by 0x41968E1: 
libreverse::infrastructure::Formula_Parser::get_Graph(std::string,
std::string) (Formula_Parser.cpp:110)
Line 110 seems correct, but the part of the Graph object at offset 8 is 
never initialized for some reason, if I read Valgrind's output correctly.
All that Graph object has is a Graph_t object and a IdVertexMap_t
object. They are part of object.

        class Graph {
        public:
               typedef property< vertex_index_t,
                                  uint32_t,
                                  property< vertex_name_t,
                                            boost::shared_ptr<Component> > >
                VertexProperty_t;

                typedef adjacency_list // VertexProperties
                Graph_t;

                typedef std::map IdVertexMap_t;

                Graph(){}

        	... Missing accessor functions for adding, retrieving or deleting Component objects ...

                Graph_t m_graph;

                IdVertexMap_t;
        }

I don't initialize these objects in the constructor since both are
objects that should be okay as empty containers.

Stephen

Re: [Boost-users] Proper way to change a cached shared pointer

Stephen Torri