void test1 (int &ref) { #pragma acc kernels copy (ref) { ref = 10; } } void test2 (int &ref) { int b; #pragma acc kernels copyout (b) { b = ref + 10; } #pragma acc parallel copyout (b) { b = ref + 10; } ref = b; } int main() { int a = 0; int &ref_a = a; #pragma acc parallel copy (a, ref_a) { ref_a = 5; } return a; }