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From: "Tornado" <12 AT 3 DOT 4>
Newsgroups: comp.os.msdos.djgpp
References: <20040902144152 DOT GH6858 AT webhome DOT cz>
Subject: Re: scanf: strange behavior?
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Date: Thu, 02 Sep 2004 14:48:40 GMT
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>
> #include <stdio.h>     ... #include <stdarg.h>    ? ..??
>
> int main(int, const char**)
> {
>   char c[2];
>   printf("%d\n", sscanf("A", "%c%c", c, c + 1));
>   return 0;
> }
>
> gives:
>
> 1 in GNU libc (on Linux)
> 1 in Borland C++ 3.1 (on DOS)
> -1 in djgpp
>
> It's conformant with the docs: "If input ends, or if there is any
> input failure before the first item is converted and assigned, `EOF'
> is returned.", so it's not to be called a 'bug', but...
>
> Do you think it's a standard violation, or just a "difference",
> ie. behavior not specified by POSIX, ANSI or other (involved)
> authority?
>
> Thanks,
>
> --
> Egon Eckert, Heaven Industries, s.r.o.
> E-mail: egon AT heaven DOT industries DOT cz