llvm-gcc-4.2/gcc/testsuite/gcc.c-torture/execute/20000822-1.c

#ifndef NO_TRAMPOLINES
int f0(int (*fn)(int *), int *p)
{
  return (*fn) (p);
}

int f1(void)
{
  int i = 0;

  int f2(int *p)
  {
    i = 1;
    return *p + 1;
  }

  return f0(f2, &i);
}
#endif

int main()
{
#ifndef NO_TRAMPOLINES
  if (f1() != 2)
    abort ();
#endif
  return 0;
}