Subversion Repositories openrisc

int check_fa_work (const char *, const char *) __attribute__((noinline));

int check_fa_mid (const char *) __attribute__((noinline));

int check_fa (char *) __attribute__((noinline));

int how_much (void) __attribute__((noinline));

int check_fa_work (const char *c, const char *f)

{

  const char d = 0;

  if (c >= &d)

    return c >= f && f >= &d;

  else

    return c <= f && f <= &d;

}

int check_fa_mid (const char *c)

{

  const char *f = __builtin_frame_address (0);

  /* Prevent a tail call to check_fa_work, eliding the current stack frame.  */

  return check_fa_work (c, f) != 0;

}

int check_fa (char *unused)

{

  const char c = 0;

  /* Prevent a tail call to check_fa_mid, eliding the current stack frame.  */

  return check_fa_mid (&c) != 0;

}

int how_much (void)

{

        return 8;

}

int main (void)

{

  char *unused = __builtin_alloca (how_much ());

  if (!check_fa(unused))

    abort();

  return 0;

}