static void vfprintf_diag (const char *, ...);
static void vfprintf_fail (const char *, ...);
static void stack_var (void ***, unsigned int *, unsigned int, void *);
static void vfprintf_diag (const char *, ...);
static void vfprintf_fail (const char *, ...);
static void stack_var (void ***, unsigned int *, unsigned int, void *);