gcc/testsuite/gfortran.dg/character_comparison_1.f90

   1 ! { dg-do run }
   2 ! { dg-options "-O -fdump-tree-original" }
   3 program 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
  26 end program main
  27
  28 subroutine yes
  29   implicit none
  30   common /foo/ i
  31   integer :: i
  32   i = i + 1
  33 end subroutine yes
  34
  35 ! { dg-final { scan-tree-dump-times "gfortran_compare_string" 0 "original" } }
  36