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From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: Matt Kraai <kraai@ftbfs.org>, git@vger.kernel.org
Subject: Re: [PATCH 3/3] wt-status: use "format" function attribute for status_printf
Date: Tue, 09 Jul 2013 22:52:55 -0700	[thread overview]
Message-ID: <7vehb7t0zs.fsf@alter.siamese.dyndns.org> (raw)
In-Reply-To: <20130710054050.GA7206@sigill.intra.peff.net> (Jeff King's message of "Wed, 10 Jul 2013 01:40:50 -0400")

Jeff King <peff@peff.net> writes:

> On Tue, Jul 09, 2013 at 10:35:25PM -0700, Junio C Hamano wrote:
>
>> > You can "fix" it with -Wno-zero-format-length, so the hassle is not
>> > huge. 
>> 
>> Yes, or just do func(..., "%s", "") perhaps?  That also sound iffy.
>
> I imagine that is the method intended by upstream (though who
> knows...the whole warning seems kind of stupid to me; it is clear that
> printf("") is a no-op, but it is obviously not clear that arbitrary
> functions using __attribute__(format) are).
>
> The patch to do it is below, but I actually think an explicit blank-line
> function like:
>
>   status_print_empty_line(s, color);
>
> would be more obvious to a reader.

I noticed that all but one can be dealt with with

    perl -p -i -e 's/status_printf_ln\((.*), ""\);/status_printf($1, "\\n");/'

That is,

-	status_printf_ln(s, GIT_COLOR_NORMAL, "");
+	status_printf(s, GIT_COLOR_NORMAL, "\n");

which does not look _too_ bad.

There is one instance that needs this, though.

-		status_printf(s, color(WT_STATUS_HEADER, s), "");
+		status_printf(s, color(WT_STATUS_HEADER, s), "%s", "");

  reply	other threads:[~2013-07-10  5:53 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-09  5:18 [PATCH] remote-http: use argv-array Junio C Hamano
2013-07-09  6:05 ` Bert Wesarg
2013-07-09  6:38   ` Jeff King
2013-07-09 22:27     ` Matt Kraai
2013-07-10  0:16       ` Jeff King
2013-07-10  0:18         ` [PATCH 1/3] add missing "format" function attributes Jeff King
2013-07-10  0:19         ` [PATCH 2/3] use "sentinel" function attribute for variadic lists Jeff King
2013-07-10  0:23         ` [PATCH 3/3] wt-status: use "format" function attribute for status_printf Jeff King
2013-07-10  5:26           ` Junio C Hamano
2013-07-10  5:28             ` Jeff King
2013-07-10  5:35               ` Junio C Hamano
2013-07-10  5:40                 ` Jeff King
2013-07-10  5:52                   ` Junio C Hamano [this message]
2013-07-10  6:11                     ` Jeff King
2013-07-10  6:17                       ` Junio C Hamano
2013-07-12 16:10               ` Junio C Hamano
2013-07-12 20:44                 ` Jeff King

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