https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96835
--- Comment #7 from Tobias Weinzierl <tobias.weinzierl at durham dot ac.uk> ---
Adding a default constructor to the vector class still does not allow us to
create the object on the target:
#include <iostream>
#define mydt double
#pragma omp declare target
struct vector {
vector() {};
vector(mydt x, mydt y);
mydt dot(vector o);
mydt v[2];
};
vector::vector(mydt x, mydt y) {
v[0]=x;
v[1]=y;
}
mydt vector::dot(vector o) { return v[0] * o.v[0] + v[1]*o.v[1]; }
#pragma omp end declare target
int main() {
mydt res;
vector v1(1,1);
vector v2(1,3);
#pragma omp target map(from:res)
{
vector v3;
res = v1.dot(v2);
}
std::cout << res << "\n";
}
However, if we replace the default constructor with a default clause, then we
ca finally create a vector on the GPU, too:
#pragma omp declare target
struct vector {
vector() = default;
[...]
