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Date: Fri, 20 Sep 2002 11:25:57 -0600 (MDT)
From: Thunder from the hill <thunder@lightweight.ods.org>
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To: Jean Tourrilhes <jt@bougret.hpl.hp.com>
cc: thunder@lightweight.ods.org,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: FW: 2.5.34: IR __FUNCTION__ breakage
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Message-ID: <Pine.LNX.4.44.0209201122450.342-100000@hawkeye.luckynet.adm>
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Hi,

On Fri, 20 Sep 2002, Jean Tourrilhes wrote:
> > Why not
> > 
> > #define DERROR(dbg, fmt, args...) \
> > 	do { if (DEBUG_##dbg) \
> > 		printk(KERN_INFO "irnet: %s(): " fmt, __FUNCTION, args); \
> > 	} while(0)
> > 
> > ?
> > 
> > 			Thunder
> 
> 	Try it, it won't work when there is zero args.

It got corrected shortly afterwards. The non-typo version is:

#define DERROR(dbg, fmt, args...) \
	do { if(DEBUG_##dbg) \
		printk(KERN_INFO "irnet: %s(): " fmt, __FUNCTION__, ##args); \
	} while(0)

Example:
#define DEBUG(fmt, args...) \
        printf("%s(): " fmt, __FUNCTION__, ## args)

int main(void)
{
        DEBUG("I am hungry.\n");

        exit(0);
}

# gcc -Wall -Os -o moehre -s moehre.c
# ./moehre
main(): I am hungry.
# 

			Thunder
-- 
assert(typeof((fool)->next) == typeof(fool));	/* wrong */

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