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! Like array_constructor_6.f90, but check iterators with non-default stride,
! including combinations which lead to zero-length vectors.
! { dg-do run }
! { dg-options "-Wzerotrip" }
program main
implicit none
call build (77)
contains
subroutine build (order)
integer :: order, i, j
call test (1, 11, 3, (/ (i, i = 1, 11, 3) /))
call test (3, 20, 2, (/ (i, i = 3, 20, 2) /))
call test (4, 0, 11, (/ (i, i = 4, 0, 11) /)) ! { dg-warning "will be executed zero times" }
call test (110, 10, -3, (/ (i, i = 110, 10, -3) /))
call test (200, 20, -12, (/ (i, i = 200, 20, -12) /))
call test (29, 30, -6, (/ (i, i = 29, 30, -6) /)) ! { dg-warning "will be executed zero times" }
call test (1, order, 3, (/ (i, i = 1, order, 3) /))
call test (order, 1, -3, (/ (i, i = order, 1, -3) /))
! Triggers compile-time iterator calculations in trans-array.c
call test (1, 1000, 2, (/ (i, i = 1, 1000, 2), (i, i = order, 0, 1) /))
call test (1, 0, 3, (/ (i, i = 1, 0, 3), (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
call test (1, 2000, -5, (/ (i, i = 1, 2000, -5), (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
call test (3000, 99, 4, (/ (i, i = 3000, 99, 4), (i, i = order, 0, 1) /)) ! { dg-warning "will be executed zero times" }
call test (400, 77, -39, (/ (i, i = 400, 77, -39), (i, i = order, 0, 1) /))
do j = -10, 10
call test (order + j, order, 5, (/ (i, i = order + j, order, 5) /))
call test (order + j, order, -5, (/ (i, i = order + j, order, -5) /))
end do
end subroutine build
subroutine test (from, to, step, values)
integer, dimension (:) :: values
integer :: from, to, step, last, i
last = 0
do i = from, to, step
last = last + 1
if (values (last) .ne. i) call abort
end do
if (size (values, dim = 1) .ne. last) call abort
end subroutine test
end program main
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