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separation3.c

/**************************************************************************/
/*                                                                        */
/*  The Why/Caduceus/Krakatoa tool suite for program certification        */
/*  Copyright (C) 2002-2006                                               */
/*    Jean-Franšois COUCHOT                                               */
/*    Mehdi DOGGUY                                                        */
/*    Jean-Christophe FILLI┬TRE                                           */
/*    Thierry HUBERT                                                      */
/*    Claude MARCH╔                                                       */
/*    Yannick MOY                                                         */
/*                                                                        */
/*  This software is free software; you can redistribute it and/or        */
/*  modify it under the terms of the GNU General Public                   */
/*  License version 2, as published by the Free Software Foundation.      */
/*                                                                        */
/*  This software 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 version 2 for more details         */
/*  (enclosed in the file GPL).                                           */
/*                                                                        */
/**************************************************************************/

struct S { int a; int b[5]; int c[5]; };

struct L { struct S q; struct S *p; int r[10]; };

struct S s0;
struct L l;

/* no alias between s0 and l.q */
/*@ ensures \result == 1 */
int f() {
  s0.a = 1;
  l.q.a = 2;
  return s0.a;
}

/* s0 and l.p are the same structure (alias) */
/*@ ensures \result == 1 */
int f2() {
  s0.b[2] = 1;
  l.p = &s0;
  return l.p->b[2];
}

/* internal separation of s0.b and s0.c */
//@ ensures \result == 1
int f3() {
  s0.b[2] = 1;
  s0.c[2] = 2;
  return s0.b[2];
}

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