| ! Copyright 2009-2023 Free Software Foundation, Inc. | 
 | ! | 
 | ! This program is free software; you can redistribute it and/or modify | 
 | ! it under the terms of the GNU General Public License as published by | 
 | ! the Free Software Foundation; either version 3 of the License, or | 
 | ! (at your option) any later version. | 
 | ! | 
 | ! This program is distributed in the hope that it will be useful, | 
 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of | 
 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
 | ! GNU General Public License for more details. | 
 | ! | 
 | ! You should have received a copy of the GNU General Public License | 
 | ! along with this program.  If not, see <http://www.gnu.org/licenses/>. | 
 |  | 
 | subroutine f(s) | 
 |   character*(*) s | 
 |   print *, s | 
 |   s(1:3) = 'oof' | 
 |   print *, s | 
 | end subroutine f | 
 |  | 
 | program main | 
 |   character*3 s; | 
 |   s = 'foo' | 
 |   call f (s) | 
 | end program main |