#include <stdio.h>
#include <stdlib.h>

void f (int a, int b);
int g (void);
int *global = NULL;

int
main (void)
{
  int x = 1;
  global = &x;
  f (g (), x);

  exit (0);
}

void
f (int a, int b)
{
  printf ("a = %d, b = %d\n", a, b);
}

int
g (void)
{
  if (global) {
    global++;
    return *global;
  }
  else
    return 42;
}