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/*@only@*/ int *oglob;
/*@keep@*/ int *kglob;
void f1 (/*@keep@*/ int *x)
{
kglob = x;
return;
}
void f2 (/*@keep@*/ int *x)
{
free (x); /* 1. Keep storage passed as only param: x */
}
int f3 (/*@keep@*/ int *x)
{
int *y = malloc (sizeof (int));
if (y == NULL) return 3; /* 2. Keep storage not transferred before return: x */
*y = 3;
f1 (x);
f1 (y);
return *x;
}
int f4 (/*@only@*/ int *x)
{
return (f3 (x));
}
void f5 (/*@unused@*/ /*@keep@*/ int *x)
{
return; /* 3. Keep storage not transferred before return: x */
}
void f6 (/*@keep@*/ int *x)
{
if (*x > 3)
{
f2 (x);
} /* 4. Variable x is kept in true branch, but live in continuation. */
f2 (x); /* 5. Kept storage passed as keep: f2 (x) */
}
/*@null@*/ int *f7 (/*@null@*/ /*@keep@*/ int *x)
{
if (x == NULL)
{
;
}
else
{
f2 (x);
}
return x; /* 6. Kept storage x returned as implicitly only: x */
}
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