From mboxrd@z Thu Jan  1 00:00:00 1970
From: SF Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 02 Nov 2016 17:38:33 +0000
Subject: Re: scripts/basic/fixdep: Complete error handling in print_cmdline()
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To: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Jim Davis <jim.epost@gmail.com>, linux-kbuild@vger.kernel.org, Michal Marek <mmarek@suse.com>, LKML <linux-kernel@vger.kernel.org>, kernel-janitors@vger.kernel.org

>>> +       if (printf("cmd_%s := %s\n\n", target, cmdline) < 10) {
>>
>> Rather than scatter fragile magic numbers, like 10, throughout the
>> code, if you're hell-bent on checking for printf errors you could
>> write a little wrapper function that hid the magic number and bundled
>> up the errno stuff.
> 
> 
> BTW, how the magic number "10" was calculated?

Does the passed format string indicate how many characters should be
printed at least?

Regards,
Markus