https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72744

--- Comment #1 from Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> 
---

As known, case above works with "workshare" :


$ cat z2.f90
program p
   integer, parameter :: n = 20
   integer :: i, z(n), h(n)
   z = [(i, i=1,n)]
   h = [(i, i=n,1,-1)]
   call sub (n, h)
   if ( any(h/=z) ) call abort
end
subroutine sub (n, x)
   integer :: n, x(n)
!$omp parallel workshare
   x(:) = x(n:1:-1)
!$omp end parallel workshare
end


$ gfortran-7-20160724 -Ofast -fopenmp -fall-intrinsics z2.f90
$ a.out

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