https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62007
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think the message is correct, or at least the case is highly unclear, the
OpenMP 4.0 standard has various unclear corner cases.
The thing is, the loop iterator is predetermined linear, and the linear clause
makes implicit reference to the outer var, but as linear clause is not allowed
on the parallel, it can't be specified there and with default(none) you are
requesting that everything is specified there explicitly.
I can only suggest using non-combined construct in that case if you for some
reason need default(none), say:
!$omp parallel private (i_ct) default(none)
!$omp do simd
do i_ct = 1, 10
...
end do
!$omp end parallel
or so.
