[Openmp-dev] Mapping issue

[Itaru Kitayama via Openmp-dev]

Below C++ code does build with the appropriate offloading flags, but errors
at run time. I am wondering if the mapping is done correctly.
Tested with the trunk Clang on POWER8.

#include <iostream>
#include <vector>

class ConnectorBase {
public:
        virtual int f() = 0;
        //virtual void push_back() =0;
        //virtual void copy_to_array() = 0;
        //virtual void send() =0;
};

template<typename ConnectionT>
class Connector : public ConnectorBase {
private:
        std::vector<ConnectionT> v_;
        ConnectionT connArray[100];

public:
        int f() { return 1; }
        Connector<ConnectionT>& push_back(ConnectionT conn) {
                v_.push_back(conn);
                return *this;
        }
        void copy_to_array() {
                std::copy(v_.begin(), v_.end(), connArray);
        }
        void send(int i, ConnectionT conn) {
                int tmp=0;
                while (true) {
                        ConnectionT conn_local = connArray[tmp];
                        //if (conn_local.is_disabled()) break;
                        if (tmp==10) break;
                        tmp++;
                }
        }
};

class SynIdDelay {
public:
        bool is_disabled() const { return true; };
};


template <typename TargetT>
class Connection {
public:
        int get_w() { return 1; }
        bool is_disabled() const {
                return syn_id_delay_.is_disabled();
             }
protected:
        SynIdDelay syn_id_delay_;
};

class Target {
};
int main()
{
 int sum=0;
 Connection<Target> connection;

 ConnectorBase *connector = new Connector<Connection<Target>>();
 Connector<Connection<Target>> *vc =
static_cast<Connector<Connection<Target>> *>(connector);
 connector = &vc->push_back(connection);
 vc->copy_to_array();
 Connector<Connection<Target>> *c =
static_cast<Connector<Connection<Target> > *>(connector);
#pragma omp target parallel for reduction(+: sum) map(to: connection)
map(to: c)
    for(int i=0; i<100; i++) {
        c->send(i, connection); // works, accessing an element of an array.
    }

}
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/openmp-dev/attachments/20191028/51697dc4/attachment.html>