special.c

typedef struct 
{
  int id;
  /*@only@*/ char *name;
} *record;
 
static /*@special@*/ record record_new (void)
  /*@defines result->id@*/
{
  record r = (record) malloc (sizeof (*r));
 
  assert (r != NULL);
  r->id = 3;
  return r;
}
 
static void record_setName (/*@special@*/ record r, /*@only@*/ char *name)
   /*@defines r->name@*/
{
  r->name = name;
}
 
record record_create (/*@only@*/ char *name)
{
  record r = record_new ();
  record_setName (r, name);
  return r;
}
 
void record_clearName (/*@special@*/ record r)
   /*@releases r->name@*/
   /*@post:isnull r->name@*/
{
  free (r->name);
  r->name = NULL;
}
 
void record_free (/*@only@*/ record r)
{
  record_clearName (r);
  free (r);
}