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From: "Randall S. Becker" <rsbecker@nexbridge.com>
To: "'Jeff King'" <peff@peff.net>,
	"'Ævar Arnfjörð Bjarmason'" <avarab@gmail.com>
Cc: <git@vger.kernel.org>, "'Junio C Hamano'" <gitster@pobox.com>
Subject: RE: [PATCH 6/6] git-compat-util.h: add __attribute__((printf)) to git_*printf*
Date: Mon, 12 Jul 2021 16:26:16 -0400	[thread overview]
Message-ID: <012b01d7775c$2ddcca60$89965f20$@nexbridge.com> (raw)
In-Reply-To: <YOyiTTbFJmWjwXlq@coredump.intra.peff.net>

On July 12, 2021 4:13 PM, Jeff King wrote:
>On Sat, Jul 10, 2021 at 10:47:32AM +0200, Ævar Arnfjörð Bjarmason wrote:
>
>> Add __attribute__((printf)) to the compatibility functions we use
>> under SNPRINTF_RETURNS_BOGUS=Y.
>>
>> In practice this is redundant to the compiler's default printf format
>> checking, since we mostly (entirely?)  develop and test on platforms
>> where SNPRINTF_RETURNS_BOGUS is not set. I'm doing this mainly for
>> consistency with other code, now we don't need to think about why this
>> particular case is different.
>>
>> See c4582f93a26 (Add compat/snprintf.c for systems that return bogus,
>> 2008-03-05) for the commit that added these functions.
>
>I'm slightly lukewarm on general on adding this to a compat function.
>Those are meant to be a lowest-common-denominator fallback, and we usually avoid fancy features or our usual styles there in favor of
>simplicity.
>
>I guess this probably isn't _hurting_ anything, but it makes me wonder how many systems have a broken snprintf _and_ support the
>attribute.

NonStop does not support __attribute__ on any compiler I know of. This appears to be a gcc extension, so compat.c would create a gcc dependency, which is also not on the platform. snprintf is in place.

-Randall


  reply	other threads:[~2021-07-12 20:26 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-10  8:47 [PATCH 0/6] add missing __attribute__((format)) Ævar Arnfjörð Bjarmason
2021-07-10  8:47 ` [PATCH 1/6] *.c static functions: don't forward-declare __attribute__ Ævar Arnfjörð Bjarmason
2021-07-10  8:47 ` [PATCH 2/6] sequencer.c: move static function to avoid forward decl Ævar Arnfjörð Bjarmason
2021-07-10  8:47 ` [PATCH 3/6] *.c static functions: add missing __attribute__((format)) Ævar Arnfjörð Bjarmason
2021-07-10  8:47 ` [PATCH 4/6] *.h: add a few " Ævar Arnfjörð Bjarmason
2021-07-11 23:05   ` Ævar Arnfjörð Bjarmason
2021-07-12 20:09     ` Jeff King
2021-07-10  8:47 ` [PATCH 5/6] bugreport.c: tweak cmd_bugreport() to use __attribute__((printf)) Ævar Arnfjörð Bjarmason
2021-07-12 19:39   ` Junio C Hamano
2021-07-10  8:47 ` [PATCH 6/6] git-compat-util.h: add __attribute__((printf)) to git_*printf* Ævar Arnfjörð Bjarmason
2021-07-12 20:13   ` Jeff King
2021-07-12 20:26     ` Randall S. Becker [this message]
2021-07-12 21:45       ` Jeff King
2021-07-12 21:58         ` Randall S. Becker
2021-07-12 20:14 ` [PATCH 0/6] add missing __attribute__((format)) Jeff King
2021-07-13  8:05 ` [PATCH v2 " Ævar Arnfjörð Bjarmason
2021-07-13  8:05   ` [PATCH v2 1/6] *.c static functions: don't forward-declare __attribute__ Ævar Arnfjörð Bjarmason
2021-07-13  8:05   ` [PATCH v2 2/6] sequencer.c: move static function to avoid forward decl Ævar Arnfjörð Bjarmason
2021-07-13  8:05   ` [PATCH v2 3/6] *.c static functions: add missing __attribute__((format)) Ævar Arnfjörð Bjarmason
2021-07-13  8:05   ` [PATCH v2 4/6] *.h: add a few " Ævar Arnfjörð Bjarmason
2021-07-13  8:05   ` [PATCH v2 5/6] advice.h: add missing __attribute__((format)) & fix usage Ævar Arnfjörð Bjarmason
2021-07-13  8:05   ` [PATCH v2 6/6] strbuf.h: add a comment about "missing" strftime() checking Ævar Arnfjörð Bjarmason
2021-07-13 21:15     ` Jeff King
2021-07-13 21:17   ` [PATCH v2 0/6] add missing __attribute__((format)) Jeff King
2021-07-13 22:29   ` Junio C Hamano
2021-07-13 23:05     ` Ævar Arnfjörð Bjarmason
2021-07-14  0:15   ` [PATCH v3 0/5] " Ævar Arnfjörð Bjarmason
2021-07-14  0:15     ` [PATCH v3 1/5] *.c static functions: don't forward-declare __attribute__ Ævar Arnfjörð Bjarmason
2021-07-14  0:15     ` [PATCH v3 2/5] sequencer.c: move static function to avoid forward decl Ævar Arnfjörð Bjarmason
2021-07-14  0:15     ` [PATCH v3 3/5] *.c static functions: add missing __attribute__((format)) Ævar Arnfjörð Bjarmason
2021-07-14  0:15     ` [PATCH v3 4/5] *.h: add a few " Ævar Arnfjörð Bjarmason
2021-07-14  0:15     ` [PATCH v3 5/5] advice.h: add missing __attribute__((format)) & fix usage Ævar Arnfjörð Bjarmason
2021-07-14 16:07     ` [PATCH v3 0/5] add missing __attribute__((format)) Junio C Hamano

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