gcc/testsuite/gfortran.dg/string_null_compare_1.f

   1 ! { dg-do run }
   2 ! { dg-options "-std=legacy" }
   3 !
   4 ! PR 27784 - Different strings should compare unequal even if they
   5 !            have CHAR(0) in them.
   6
   7       program main
   8       character*3 str1, str2
   9       call setval(str1, str2)
  10       if (str1 == str2) STOP 1
  11       end
  12
  13       subroutine setval(str1, str2)
  14       character*3 str1, str2
  15       str1 = 'a' // CHAR(0) // 'a'
  16       str2 = 'a' // CHAR(0) // 'c'
  17       end