linux-kernel - Re: [PATCH] fix %*s%n in sscanf

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Date:	Fri, 25 Sep 2009 10:42:03 +0000
From:	Andy Spencer <andy753421@...il.com>
To:	"Am??rico Wang" <xiyou.wangcong@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fix %*s%n in sscanf

> >   int end;
> >   char buf[] = "hello    world";
> >   sscanf(buf, "%*s%n", &end);
> >   printf("%d\n", end);
> 
> Yeah, seems reasonable. So, without your patch, sscanf() in kernel
> will ignore everything after '*', right?

Currently it ignores everything between '*' and whitespace. So '%*s%n'
does not work, but '%*s %n' will correctly return the start of "world".

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