From: Junio C Hamano <gitster@pobox.com>
To: Jeff King <peff@peff.net>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
Johannes Schindelin via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org,
Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
Subject: Re: [PATCH 1/1] vreportf(): avoid buffered write in favor of unbuffered one
Date: Wed, 30 Oct 2019 01:44:48 +0900 [thread overview]
Message-ID: <xmqqtv7r5wn3.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20191029134932.GA2843@sigill.intra.peff.net> (Jeff King's message of "Tue, 29 Oct 2019 09:49:32 -0400")
Jeff King <peff@peff.net> writes:
> Wow, they have truly taken "unbuffered" to a whole new level.
>
> I don't mind seeing this for all platforms, though. I can't think of any
> downside, and having one less moving part to contend with in our
> error-reporting code seems like a good thing.
FWIW, it was my mistake to sound as if I was unhappy to see this
done on all platforms. As long as the end result is to reasonably
buffer, I do not mind us (as opposed to the system library we
sometimes cannot trust) being the one who implements the buffering.
I very much prefer to see the same code run everywhere than #ifdef
in this case.
> I'd recommend xsnprintf() here. If we have a prefix longer than our
> vreportf() buffer, I think a BUG() is the right outcome.
> ...
> I'd disagree here. Any caller sending an arbitrarily-large prefix is
> holding it wrong, and we'd probably want to know as soon as possible
> (and a BUG() is our best bet there).
Yes. We are not using an unvetted input as the prefix here, if
somebody needs to use a larger prefix somewhere, that patch needs to
argue the pros-and-cons between making the buffer larger or
shortening that larger prefix.
next prev parent reply other threads:[~2019-10-29 16:44 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-28 15:00 [PATCH 0/1] Fix t5516 flakiness in Visual Studio builds Johannes Schindelin via GitGitGadget
2019-10-28 15:00 ` [PATCH 1/1] vreportf(): avoid buffered write in favor of unbuffered one Johannes Schindelin via GitGitGadget
2019-10-29 3:18 ` Junio C Hamano
2019-10-29 12:30 ` Johannes Schindelin
2019-10-29 13:49 ` Jeff King
2019-10-29 14:13 ` Johannes Schindelin
2019-10-29 14:32 ` Jeff King
2019-10-29 20:09 ` Johannes Schindelin
2019-10-30 1:43 ` Junio C Hamano
2019-10-29 16:44 ` Junio C Hamano [this message]
2019-10-29 10:38 ` SZEDER Gábor
2019-10-29 12:38 ` Johannes Schindelin
2019-10-29 13:52 ` Jeff King
2019-10-29 14:18 ` Johannes Schindelin
2019-10-29 13:37 ` [PATCH v2 0/1] Fix t5516 flakiness in Visual Studio builds Johannes Schindelin via GitGitGadget
2019-10-29 13:37 ` [PATCH v2 1/1] vreportf(): avoid relying on stdio buffering Johannes Schindelin via GitGitGadget
2019-10-29 14:21 ` Alexandr Miloslavskiy
2019-10-29 19:57 ` Johannes Schindelin
2019-10-29 20:09 ` Jeff King
2019-10-29 20:24 ` Alexandr Miloslavskiy
2019-10-29 20:11 ` Alexandr Miloslavskiy
2019-10-29 20:01 ` [PATCH v3 0/1] Fix t5516 flakiness in Visual Studio builds Johannes Schindelin via GitGitGadget
2019-10-29 20:01 ` [PATCH v3 1/1] vreportf(): avoid relying on stdio buffering Johannes Schindelin via GitGitGadget
2019-10-29 20:32 ` Jeff King
2019-10-30 8:54 ` Johannes Schindelin
2019-10-31 6:24 ` Jeff King
2019-10-31 10:26 ` Johannes Schindelin
2019-10-31 15:48 ` Jeff King
2019-11-01 18:41 ` Johannes Schindelin
2019-10-30 2:01 ` Junio C Hamano
2019-10-30 9:13 ` Johannes Schindelin
2019-10-30 10:44 ` [PATCH v4 0/1] Fix t5516 flakiness in Visual Studio builds Johannes Schindelin via GitGitGadget
2019-10-30 10:44 ` [PATCH v4 1/1] vreportf(): avoid relying on stdio buffering Johannes Schindelin via GitGitGadget
2019-11-02 4:05 ` Junio C Hamano
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