id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4750,is_convertible_basic_impl causes compile error when used inside OpenMP loop,therealremi@…,John Maddock,"In the following example compile error is generated under Visual 2008, if ""default(none)"" is used for OpenMP variable data sharing attribute clauses (which is the recommended choice). It's practically a deal breaker when a novice user tries to use boost with OpenMP. And I would say OpenMP use will only grow.


#define BOOST_ALL_NO_LIB 1

#include <boost/graph/adjacency_list.hpp>

#include <omp.h>


int main(int argc, char* argv[])
{
    typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS> GraphType;

    typedef GraphType::adjacency_iterator GraphAdjacencyIterator;

    const unsigned int vertex_count( 20 );

    typedef std::pair<int, int> EdgeType;

    std::vector<EdgeType> edges;

    const GraphType graph( edges.begin(), edges.end(), vertex_count, edges.size() );

    int i( 0 );

    #pragma omp parallel for schedule(static, 1) default(none) private(i) shared(vertex_count, graph)

    for ( i = 0; i < vertex_count; ++i )
    {
        const std::pair<GraphAdjacencyIterator, GraphAdjacencyIterator> adjacent
        (
            boost::adjacent_vertices(i, graph)
        );
    }

    return 0;
}


""\boost\boost/type_traits/is_convertible.hpp(263) : error C3052: '_m_from' : variable doesn't appear in a data-sharing clause under a default(none) clause""
",Bugs,closed,To Be Determined,type_traits,Boost 1.44.0,Problem,wontfix,"OpenMP, type traits, graph",