[Openmp-dev] Target CUDA RTL --> CUDA error is: an illegal memory access was encountered

[Itaru Kitayama via Openmp-dev]

This piece of C++ program execution fails at run time.

#include <stdio.h>

class AbsBase {
public:
        virtual int f() = 0;
};

class Derived : public AbsBase {
private:
        int *arr = new int[100];
public:
        int f() { return arr[0]; }
        void fillarray() {
                arr[0] = 1234;
        }
};

int main() {
        AbsBase *absBase = new Derived();
        static_cast<Derived*>(absBase)->fillarray();
#pragma omp target parallel for map(to: absBase[0:1])
        for (int i=0;i<10;i++) {
                Derived d1(*static_cast<Derived*>(absBase));
                printf("arr[0] is %d\n", d1.f());
        }
}

On Sun, Jan 12, 2020 at 1:45 PM Doerfert, Johannes <jdoerfert at anl.gov>
wrote:

> On 01/12, Itaru Kitayama wrote:
> > Do you guys have a timeframe for that feature
> > Implemented?
>
> I do not and I don't know anyone who will drive this right now.
>
> As mentioned before, you should be able to "move/copy-create" the
> elements on the device in order to use virtual functions.
>
>
> > On Sun, Jan 12, 2020 at 12:51 Doerfert, Johannes <jdoerfert at anl.gov>
> wrote:
> >
> > > On 01/11, Alexey Bataev via Openmp-dev wrote:
> > > > Virtual functions are not supported.
> > >
> > > Not yet ;).
> > >
> > > We'll get it with 5.1 so we might actually implement it soon. Till
> then,
> > > you have to create the object on the device you call the virtual
> > > function.
> > >
>
> --
>
> Johannes Doerfert
> Researcher
>
> Argonne National Laboratory
> Lemont, IL 60439, USA
>
> jdoerfert at anl.gov
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/openmp-dev/attachments/20200115/78cd2ab9/attachment.html>