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# include "bool.h"
/*@only@*/ /*@null@*/ int *p;
extern /*@truenull@*/ bool isNull (/*@null@*/ int *p);
void f (void)
{
if (p != NULL) return;
else
{
p = malloc (24);
if (p == NULL) exit (EXIT_FAILURE);
*p = 3;
}
}
void f1 (void)
{
if (p != NULL) return;
p = malloc (24);
if (p == NULL) exit (EXIT_FAILURE);
*p = 3;
}
int f2 (void)
{
if (p == NULL) return 0;
return *p;
}
int f3 (void)
{
if (isNull(p)) return 0;
return *p;
}
void g (void)
{
if (p == NULL) return;
p = malloc (24); /* 1. Only storage p not released before assignment */
if (p == NULL) exit (EXIT_FAILURE);
*p = 3;
}
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