1! { dg-do run }
2! Test assignments of nested derived types with allocatable components(PR 20541).
3!
4! Contributed by Erik Edelmann  <eedelmann@gcc.gnu.org>
5!            and Paul Thomas  <pault@gcc.gnu.org>
6!
7  type :: a
8    integer, allocatable :: i(:)
9  end type a
10
11  type :: b
12    type (a), allocatable :: at(:)
13  end type b
14
15  type(a) :: x(2)
16  type(b) :: y(2), z(2)
17  integer i, m(4)
18
19  x(1) = a((/1,2,3,4/))
20  x(2) = a((/1,2,3,4/)+10)
21
22  y(1) = b((/x(1),x(2)/))
23  y(2) = b((/x(2),x(1)/))
24
25  y(2) = y(1)
26  forall (j=1:2,k=1:4, y(1)%at(j)%i(k) .ne. y(2)%at(j)%i(k)) &
27                             y(1)%at(j)%i(k) = 999
28  if (any ((/((y(1)%at(j)%i(k), k=1,4),j=1,2)/) .eq. 999)) STOP 1
29
30
31  z = y
32  forall (i=1:2,j=1:2,k=1:4, z(i)%at(j)%i(k) .ne. y(i)%at(j)%i(k)) &
33                             z(i)%at(j)%i(k) = 999
34  if (any ((/(((z(i)%at(j)%i(k), k=1,4),j=1,2),i=1,2)/) .eq. 999)) STOP 2
35
36end
37