File: routine-1.f90

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gcc-avr 1%3A5.4.0%2BAtmel3.6.1-2
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! { dg-do run }
! { dg-options "-fno-inline" }

  interface
    recursive function fact (x)
      !$acc routine
      integer, intent(in) :: x
      integer :: fact
    end function fact
  end interface
  integer, parameter :: n = 10
  integer :: a(n), i
  !$acc parallel
  !$acc loop
  do i = 1, n
     a(i) = fact (i)
  end do
  !$acc end parallel
  do i = 1, n
     if (a(i) .ne. fact(i)) call abort
  end do
end
recursive function fact (x) result (res)
  !$acc routine
  integer, intent(in) :: x
  integer :: res
  if (x < 1) then
     res = 1
  else
     res = x * fact (x - 1)
  end if
end function fact