From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <4A7BA3D8.1020903@tecmav.com>
Date: Fri,  7 Aug 2009 05:47:36 +0200
From: Adriano Verardo <a.verardo@tecmav.com>
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To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
References: <634008374f96d39b2953843bc63d67ff@plan9.bell-labs.com>
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Subject: Re: [9fans] binary sprint format
Topicbox-Message-UUID: 3b9ad59e-ead5-11e9-9d60-3106f5b1d025

jmk@plan9.bell-labs.com wrote:
> the kernel library include file (../port/lib.h)
> does not have a pragma in it for %b. if this is
> indeed a kernel driver you are writing then you
> should add the pragma in the driver:
>
> #pragma	varargck	type	"b"	int
>
> the reason the kernel does not just use <libc.h>
> is to catch the inadvertent use of routines from
> libc.a that just won't work if used in the kernel
> (e.g. functions that do system calls). if %b becomes
> commonly used in the kernel and is safe to use
> (not all format specifiers are safe in the kernel,
> e.g. those for floating point) then it will find
> its way into ../port/lib.h.
>
> --jim
>
>
>
It works perfectly.

Thank you very much, Jim.

adriano