Is va_list defined by <stdio.h>?

[Doug Gwyn]

In article <16863 at hoptoad.uucp> gnu at hoptoad.uucp (John Gilmore) writes:
>In an ANSI C implementation, it appears that the type "va_list" must be
>defined by <stdio.h> ...

NO!  To the contrary, a conforming implementation must NOT define va_list
as a side effect of inclusion of <stdio.h>.

>but it is not possible for <stdio.h> to declare these functions without
>also declaring va_list, ...

False.