20000605-1.c

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

/* Copyright (C) 2000 Free Software Foundation */

/* make sure we don't get confused by various flavors of void */

/* Origin:  Jakub Jelinek  <[e-mail]>
 *          Joel Sherrill <[e-mail]>
 */

typedef void foo;
foo bar(void);
void baz(void)
{
  bar();
}

void volatile f();

int x()
{
  f();
}