1! { dg-do run }
2! PR 48955 - missing array temporary when there was both a forward
3! and a backward dependency.
4! Test case slightly modified from the original one by Kacper Kowalik.
5program ala
6   implicit none
7
8   integer, parameter  :: n = 6
9   real, dimension(n), parameter :: result = [1.,10.,30.,90.,270., 243.];
10   real, dimension(n) :: v0, v1
11   character(len=80) :: line1, line2
12
13   v0 = [1.0, 3.0, 9.0, 27.0, 81.0, 243.0]
14   v1 = v0
15
16   v1(2:n-1) = v1(1:n-2) + v1(3:n)
17   if (any(v1 /= result)) STOP 1
18   v1 = v0
19   v1(2:n-1) = v0(1:n-2) + v0(3:n)
20   if (any(v1 /= result)) STOP 2
21
22   v1 = v0
23   v1(2:n-1) = v1(3:n) + v1(1:n-2)
24   if (any(v1 /= result)) STOP 3
25   v1 = v0
26   v1(2:n-1) = v0(3:n) + v0(1:n-2)
27   if (any(v1 /= result)) STOP 4
28
29end program ala
30