gcc/testsuite/gm2/pim/pass/indirect.mod

   1 (* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. *)
   2 (* This file is part of GNU Modula-2.
   3
   4 GNU Modula-2 is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License along
  15 with gm2; see the file COPYING.  If not, write to the Free Software
  16 Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *)
  17 MODULE indirect ;
  18
  19 FROM SYSTEM IMPORT ADDRESS ;
  20
  21 TYPE
  22    MYBYTE = [0..255] ;
  23    ptr = POINTER TO ADDRESS ;
  24
  25 VAR
  26    f: ARRAY [0..255] OF ptr ;
  27
  28 PROCEDURE first (p: ptr) ;
  29 VAR
  30    t: ptr ;
  31    i: CARDINAL ;
  32 BEGIN
  33    t := f[i]^ ;
  34    IF p^ = NIL
  35    THEN
  36       HALT
  37    END
  38 END first ;
  39
  40
  41 VAR
  42    q: ptr ;
  43 BEGIN
  44    first(q)
  45 END indirect.