struct xx
{
int a;
struct xx *b;
short c;
};
int f1 (struct xx *);
void f2 (void);
int
foo (struct xx *p, int b, int c, int d)
{
int a;
for (;;)
{
a = f1(p);
if (a)
return (0);
if (b)
continue;
p->c = d;
if (p->a)
f2 ();
if (c)
f2 ();
d = p->c;
switch (a)
{
case 1:
if (p->b)
f2 ();
if (c)
f2 ();
default:
break;
}
}
return d;
}
int main (void)
{
struct xx s = {0, &s, 23};
if (foo (&s, 0, 0, 0) != 0 || s.a != 0 || s.b != &s || s.c != 0)
abort ();
exit (0);
}
int
f1 (struct xx *p)
{
static int beenhere = 0;
if (beenhere++ > 1)
abort ();
return beenhere > 1;
}
void
f2 (void)
{
abort ();
}