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From: Alexandr Miloslavskiy <alexandr.miloslavskiy@syntevo.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Johannes Schindelin via GitGitGadget <gitgitgadget@gmail.com>,
	git@vger.kernel.org, Jeff King <peff@peff.net>,
	Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH v2 1/1] vreportf(): avoid relying on stdio buffering
Date: Tue, 29 Oct 2019 21:11:29 +0100	[thread overview]
Message-ID: <97291857-42a2-4865-b265-d55fcf131ba5@syntevo.com> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.1910292049530.46@tvgsbejvaqbjf.bet>

On 29.10.2019 20:57, Johannes Schindelin wrote:

> It is not entirely obvious to me what exactly you mean by "this",
> assuming that you refer to comparing two pointers via `<`, I agree that
> this is not the best idea, I changed it to `off < pend - msg`. If my
> assumption is correct, however, we are still talking about C, so I
> wonder how this C++ document you linked could bear any relevance:

The linked portion of text speaks about adding to pointer. The paragraph 
is a bit long and my quote was indeed hard to grasp. And yes, sorry, C++ 
habits. However, the same thing applies to C, let's have this link instead:

https://web.archive.org/web/20181230041359if_/http://www.open-std.org/jtc1/sc22/wg14/www/abq/c17_updated_proposed_fdis.pdf

Hopefully a better quote this time (c/c++ standard are hard to read for 
mortals like me):

When an expression that has integer type is added to or subtracted from 
a pointer <...> If both the pointer operand and the result point
to elements of the same array object, or one past the last element of 
the array object, <...> otherwise, the behavior is undefined.

> Quite honestly, I purposefully refrained from copying that information.

That's a pity, I've put quite an effort into researching all that.

  parent reply	other threads:[~2019-10-29 20:11 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
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 [this message]
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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