1! { dg-do run }
2! Modified program from http://groups.google.com/group/\
3! comp.lang.fortran/browse_frm/thread/423e4392dc965ab7#
4!
5module myoperator
6   contains
7      function dadd(arg1,arg2)
8         integer ::dadd(2)
9         integer, intent(in) :: arg1(2), arg2(2)
10         dadd(1)=arg1(1)+arg2(1)
11         dadd(2)=arg1(2)+arg2(2)
12      end function dadd
13end module myoperator
14
15program test_interface
16
17   use myoperator
18
19   implicit none
20
21   interface operator (.myadd.)
22      module procedure dadd
23   end interface
24
25   integer input1(2), input2(2), mysum(2)
26
27   input1 = (/0,1/)
28   input2 = (/3,3/)
29   mysum = input1 .myadd. input2
30   if (mysum(1) /= 3 .and. mysum(2) /= 4) call abort
31
32   call test_sub(input1, input2)
33
34end program test_interface
35
36subroutine test_sub(input1, input2)
37
38   use myoperator
39
40   implicit none
41
42   interface operator (.myadd.)
43      module procedure dadd
44   end interface
45
46   integer, intent(in) :: input1(2), input2(2)
47   integer mysum(2)
48
49   mysum = input1 .myadd. input2
50   if (mysum(1) /= 3 .and. mysum(2) /= 4) call abort
51
52end subroutine test_sub
53