Date: Sun, 13 Jun 1999 11:12:08 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
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To: Alain Magloire <alainm AT rcsm DOT ece DOT mcgill DOT ca>
cc: djgpp-workers AT delorie DOT com
Subject: Re: {v,}snprintf.c ???
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On Wed, 9 Jun 1999, Alain Magloire wrote:

> int
> snprintf(char *str, size_t n, const char *fmt, ...)
> {
>   FILE _strbuf;
>   int len;
> 
>   if ((int)n < 1)
>     return EOF;

The C9X draft is rather vague on this point, but it surely doesn't say
that N should be strictly positive.  In fact, I can understand its
language as meaning that calling {v,}snprintf with a zero N is a way
to know how many characters should I allocate for the string that I
pass to it when I *really* need some output.

What do other implementations do when N is zero?