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integer :: v(16), i
do i = 1, 16
v(i) = i
end do
!$omp parallel num_threads (4)
!$omp single
!$omp taskgroup
do i = 1, 16, 2
!$omp task
!$omp task
v(i) = v(i) + 1
!$omp end task
!$omp task
v(i + 1) = v(i + 1) + 1
!$omp end task
!$omp end task
end do
!$omp end taskgroup
do i = 1, 16
if (v(i).ne.(i + 1)) call abort
end do
!$omp taskgroup
do i = 1, 16, 2
!$omp task
!$omp task
v(i) = v(i) + 1
!$omp endtask
!$omp task
v(i + 1) = v(i + 1) + 1
!$omp endtask
!$omp taskwait
!$omp endtask
end do
!$omp endtaskgroup
do i = 1, 16
if (v(i).ne.(i + 2)) call abort
end do
!$omp taskgroup
do i = 1, 16, 2
!$omp task
!$omp task
v(i) = v(i) + 1
!$omp end task
v(i + 1) = v(i + 1) + 1
!$omp end task
end do
!$omp taskwait
do i = 1, 16, 2
!$omp task
v(i + 1) = v(i + 1) + 1
!$omp end task
end do
!$omp end taskgroup
do i = 1, 16, 2
if (v(i).ne.(i + 3)) call abort
if (v(i + 1).ne.(i + 5)) call abort
end do
!$omp taskgroup
do i = 1, 16, 2
!$omp taskgroup
!$omp task
v(i) = v(i) + 1
!$omp end task
!$omp task
v(i + 1) = v(i + 1) + 1
!$omp end task
!$omp end taskgroup
if (v(i).ne.(i + 4).or.v(i + 1).ne.(i + 6)) call abort
!$omp task
v(i) = v(i) + 1
!$omp end task
end do
!$omp end taskgroup
do i = 1, 16
if (v(i).ne.(i + 5)) call abort
end do
!$omp end single
!$omp end parallel
end
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