1! Program to test IO of derived types
2program derived_io
3  character(400) :: buf1, buf2, buf3
4
5  type xyz_type
6     integer :: x
7     character(11) :: y
8     logical :: z
9  end type xyz_type
10
11  type abcdef_type
12     integer :: a
13     logical :: b
14     type (xyz_type) :: c
15     integer :: d
16     real(4) :: e
17     character(11) :: f
18  end type abcdef_type
19
20  type (xyz_type), dimension(2) :: xyz
21  type (abcdef_type) abcdef
22
23  xyz(1)%x = 11111
24  xyz(1)%y = "hello world"
25  xyz(1)%z = .true.
26  xyz(2)%x = 0
27  xyz(2)%y = "go away"
28  xyz(2)%z = .false.
29
30  abcdef%a = 0
31  abcdef%b = .true.
32  abcdef%c%x = 111
33  abcdef%c%y = "bzz booo"
34  abcdef%c%z = .false.
35  abcdef%d = 3
36  abcdef%e = 4.0
37  abcdef%f = "kawabanga"
38
39  write (buf1, *), xyz(1)%x, xyz(1)%y, xyz(1)%z
40  ! Use function call to ensure it is only evaluated once
41  write (buf2, *), xyz(bar())
42  if (buf1.ne.buf2) STOP 1
43
44  write (buf1, *), abcdef
45  write (buf2, *), abcdef%a, abcdef%b, abcdef%c, abcdef%d, abcdef%e, abcdef%f
46  write (buf3, *), abcdef%a, abcdef%b, abcdef%c%x, abcdef%c%y, &
47                   abcdef%c%z, abcdef%d, abcdef%e, abcdef%f
48  if (buf1.ne.buf2) STOP 2
49  if (buf1.ne.buf3) STOP 3
50
51  call foo(xyz(1))
52
53  contains
54
55    subroutine foo(t)
56      type (xyz_type) t
57      write (buf1, *), t%x, t%y, t%z
58      write (buf2, *), t
59      if (buf1.ne.buf2) STOP 4
60    end subroutine foo
61
62    integer function bar()
63      integer, save :: i = 1
64      bar = i
65      i = i + 1
66    end function
67end
68