source: CIVL/examples/omp/dataracebench-1.3.2/micro-benchmarks-fortran/DRB011-minusminus-orig-yes.f95

!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!
!!! Copyright (c) 2017-20, Lawrence Livermore National Security, LLC
!!! and DataRaceBench project contributors. See the DataRaceBench/COPYRIGHT file for details.
!!!
!!! SPDX-License-Identifier: (BSD-3-Clause)
!!!~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!!!

!The -1 operation on numNodes2 is not protected, causing data race.
!Data race pair: numNodes2@32:13 vs. numNodes2@32:13

program DRB011_minusminus_orig_yes
    use omp_lib
    implicit none

    integer :: i, len, numNodes, numNodes2
    integer :: x(100)
    len = 100
    numNodes=len
    numNodes2=0

    do i = 1, len
        if (MOD(i,2) == 0) then
            x(i) = 5
        else
            x(i) = -5
        end if
    end do

    !$omp parallel do
    do i = numNodes, 1, -1
        if (x(i) <= 0) then
            numNodes2 = numNodes2-1
        end if
    end do
    !$omp end parallel do

    print*,"numNodes2 =", numNodes2
end program