From: Marc-Christian Petersen <m.c.p@wolk-project.de>
To: Torsten Foertsch <torsten.foertsch@gmx.net>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] vsscanf do not convert hex numbers starting with a non-digit
Date: Tue, 11 Mar 2003 12:36:15 +0100 [thread overview]
Message-ID: <200303111236.15944.m.c.p@wolk-project.de> (raw)
In-Reply-To: <200303111202.19984.torsten.foertsch@gmx.net>
On Tuesday 11 March 2003 12:02, Torsten Foertsch wrote:
Hi Torsten,
> I found the following little bug in 2.4.19. I did not try newer kernels.
> vsscanf refuses to convert a hex number starting with a nondecimal digit
> like:
> char *buf="ff";
> unsigned ff=0;
> sscanf( buf, "%x", &ff ); /* fails: nothing is converted */
>
> Here is a patch that corrects that behaviour:
>
> --- linux/lib/vsprintf.c 2001-10-11 20:17:22.000000000 +0200
> +++ linux.patched/lib/vsprintf.c 2003-03-11 11:52:08.000000000 +0100
> @@ -637,7 +637,7 @@
> while (isspace(*str))
> str++;
>
> - if (!*str || !isdigit(*str))
> + if (!*str || !(isdigit(*str) || (base==16 &&
> isxdigit(*str)))) break;
>
> switch(qualifier) {
http://marc.theaimsgroup.com/?l=linux-kernel&m=104687957102846&w=2
This fix was first posted since early 2.4.18-pre stage.
ciao, Marc
prev parent reply other threads:[~2003-03-11 11:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-11 11:02 Torsten Foertsch
2003-03-11 11:36 ` Marc-Christian Petersen [this message]
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