1! { dg-do run }
2! { dg-options "-O -fdump-tree-original" }
3program main
4  implicit none
5  character(len=4) :: c
6  integer :: n
7  integer :: i
8  common /foo/ i
9
10  n = 0
11  i = 0
12  c = 'abcd'
13  n = n + 1 ; if (c == c) call yes
14  n = n + 1 ; if (c >= c) call yes
15  n = n + 1 ; if (c <= c) call yes
16  n = n + 1 ; if (c .eq. c) call yes
17  n = n + 1 ; if (c .ge. c) call yes
18  n = n + 1 ; if (c .le. c) call yes
19  if (c /= c) call abort
20  if (c > c) call abort
21  if (c < c) call abort
22  if (c .ne. c) call abort
23  if (c .gt. c) call abort
24  if (c .lt. c) call abort
25  if (n /= i) call abort
26end program main
27
28subroutine yes
29  implicit none
30  common /foo/ i
31  integer :: i
32  i = i + 1
33end subroutine yes
34
35! { dg-final { scan-tree-dump-times "gfortran_compare_string" 0 "original" } }
36! { dg-final { cleanup-tree-dump "original" } }
37
38