From: Junio C Hamano <gitster@pobox.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
git@vger.kernel.org, "Jeff King" <peff@peff.net>,
"Denton Liu" <liu.denton@gmail.com>,
"Jeff Hostetler" <jeffhost@microsoft.com>
Subject: Re: [PATCH] trace2: refactor to avoid gcc warning under -O3
Date: Fri, 07 May 2021 06:10:53 +0900 [thread overview]
Message-ID: <xmqqh7jfy3du.fsf@gitster.g> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.2105062229270.50@tvgsbejvaqbjf.bet> (Johannes Schindelin's message of "Thu, 6 May 2021 22:29:57 +0200 (CEST)")
Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
>> Otherwise I'd strongly prefer to see a word that hints that this is
>> an otherwise unneeded workaround for comiplers. Your suggested
>> title instead hints that it is wrong to assume that errno will be
>> set to non-zero after a syscall. I do not think that is the message
>> we want to send to our readers.
>
> Right, the oneline I suggested was only for the original patch, with which
> I disagreed.
I actually do not know how your rewrite could be better, though.
/* GCC thinks socket()/connect() might fail to set errno */
return errno ? errno : EIO;
If a compiler thinks errno may *not* be set, can 'errno' be reliably
used to decide if it can be returned as-is or a fallback value EIO
should be used, without triggering the same (incorrect) working in
the first place?
next prev parent reply other threads:[~2021-05-06 21:11 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 7:30 [PATCH] Fix -Wmaybe-uninitialized warnings under -O0 Denton Liu
[not found] ` <CAPUEspgBkmxszgBee8C9hZnEwqztf-XKEj7LB_jWVFJaJCge0w@mail.gmail.com>
2020-04-01 9:05 ` Denton Liu
2020-04-01 9:52 ` Jeff King
2020-04-01 14:06 ` Denton Liu
2020-04-03 14:04 ` Jeff King
2020-04-03 14:38 ` Jeff King
2020-04-04 12:07 ` Denton Liu
2020-04-04 14:21 ` Jeff King
2021-05-05 8:40 ` [PATCH] trace2: refactor to avoid gcc warning under -O3 Ævar Arnfjörð Bjarmason
2021-05-05 9:47 ` Junio C Hamano
2021-05-05 13:34 ` Jeff King
2021-05-05 14:38 ` Johannes Schindelin
2021-05-06 1:26 ` Junio C Hamano
2021-05-06 20:29 ` Johannes Schindelin
2021-05-06 21:10 ` Junio C Hamano [this message]
2021-05-11 14:34 ` Johannes Schindelin
2021-05-11 18:00 ` Jeff King
2021-05-11 20:58 ` Junio C Hamano
2021-05-11 21:07 ` Jeff King
2021-05-11 21:33 ` Junio C Hamano
2021-05-11 7:03 ` Junio C Hamano
2021-05-11 13:04 ` [PATCH v2] " Ævar Arnfjörð Bjarmason
2021-05-11 16:40 ` Jeff Hostetler
2021-05-11 17:54 ` Jeff King
2021-05-11 18:08 ` Jeff King
2021-05-11 21:09 ` Junio C Hamano
2021-05-20 0:20 ` Junio C Hamano
2021-05-20 11:05 ` [PATCH v3] " Ævar Arnfjörð Bjarmason
2021-05-20 13:13 ` Jeff King
2021-05-20 22:08 ` Junio C Hamano
2021-05-21 9:34 ` Jeff King
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