/opt/imh-python/lib/python3.9/site-packages/numpy/f2py/tests/src/negative_bounds
Edit: /opt/imh-python/lib/python3.9/site-packages/numpy/f2py/tests/src/negative_bounds/issue_20853.f90 (157B)
subroutine foo(is_, ie_, arr, tout)
implicit none
integer :: is_,ie_
real, intent(in) :: arr(is_:ie_)
real, intent(out) :: tout(is_:ie_)
tout = arr
end