From: "Martin Ågren" <martin.agren@gmail.com>
To: Jeff King <peff@peff.net>
Cc: Git Mailing List <git@vger.kernel.org>,
"brian m . carlson" <sandals@crustytoothpaste.net>
Subject: Re: [PATCH 1/3] setup: drop return value from `read_repository_format()`
Date: Wed, 19 Dec 2018 22:42:12 +0100 [thread overview]
Message-ID: <CAN0heSpfksXsKZrFNSaO_qitAB6gbF7QePQkuN37kAerSe2xWA@mail.gmail.com> (raw)
In-Reply-To: <20181219152735.GA14802@sigill.intra.peff.net>
On Wed, 19 Dec 2018 at 16:27, Jeff King <peff@peff.net> wrote:
>
> On Tue, Dec 18, 2018 at 08:25:26AM +0100, Martin Ågren wrote:
>
> > No-one looks at the return value, so we might as well drop it. It's
> > still available as `format->version`.
>
> Hmm. If we have to pick one, I'd say that just returning a sane exit
> value would be the more conventional thing to do. But looking at the
> callers, many of them want to just pass the struct on to the verify
> function.
>
> That said, there is a long-standing curiosity here that we may want to
> consider: read_repository_format() does not distinguish between these
> three cases:
[snip several valuable insights]
> I dunno. This is one of those dark corners of the code where we appear
> to do the wrong thing, but nobody seems to have noticed or cared much,
> and changing it runs the risk of breaking some obscure cases. I'm not
> sure if we should bite the bullet and try to address that, or just back
> away slowly and pretend we never looked at it. ;)
That was my reaction when I first dug into this. :-/ It's only now that
I've been brave enough to even try to dig through the first layer.
> FWIW, the patch itself seems fine, and obviously doesn't make anything
> worse on its own. The question is just whether we want to do more
> cleanup here.
Well, if we do want to make more cleanups around here, one of the more
obvious ideas is to actually use the return value. If such a cleanup is
going to start with a (moral) revert of this patch, then we're probably
better off just dropping this patch.
Thanks for your thoughtful response
Martin
next prev parent reply other threads:[~2018-12-19 21:42 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-18 7:25 [PATCH 0/3] setup: add `clear_repository_format()` Martin Ågren
2018-12-18 7:25 ` [PATCH 1/3] setup: drop return value from `read_repository_format()` Martin Ågren
2018-12-19 15:27 ` Jeff King
2018-12-19 21:42 ` Martin Ågren [this message]
2018-12-20 0:17 ` brian m. carlson
2018-12-20 2:52 ` Jeff King
2018-12-20 3:45 ` brian m. carlson
2018-12-20 14:53 ` Jeff King
2018-12-18 7:25 ` [PATCH 2/3] setup: do not use invalid `repository_format` Martin Ågren
2018-12-19 0:18 ` brian m. carlson
2018-12-19 21:43 ` Martin Ågren
2018-12-19 15:38 ` Jeff King
2018-12-19 21:46 ` Martin Ågren
2018-12-19 23:17 ` Jeff King
2018-12-20 0:21 ` brian m. carlson
2018-12-18 7:25 ` [PATCH 3/3] setup: add `clear_repository_format()` Martin Ågren
2018-12-19 15:48 ` Jeff King
2018-12-19 21:49 ` Martin Ågren
2019-01-14 18:34 ` [PATCH v2 0/3] " Martin Ågren
2019-01-14 18:34 ` [PATCH v2 1/3] setup: free old value before setting `work_tree` Martin Ågren
2019-01-14 18:34 ` [PATCH v2 2/3] setup: do not use invalid `repository_format` Martin Ågren
2019-01-15 19:31 ` Jeff King
2019-01-17 6:31 ` Martin Ågren
2019-01-22 7:07 ` Jeff King
2019-01-22 13:34 ` Martin Ågren
2019-01-22 21:45 ` [PATCH v3 0/2] setup: fix memory leaks with `struct repository_format` Martin Ågren
2019-01-22 21:45 ` [PATCH v3 1/2] setup: free old value before setting `work_tree` Martin Ågren
2019-01-22 21:45 ` [PATCH v3 2/2] setup: fix memory leaks with `struct repository_format` Martin Ågren
2019-01-23 5:57 ` Jeff King
2019-01-24 0:14 ` brian m. carlson
2019-01-25 19:25 ` Martin Ågren
2019-01-25 19:24 ` Martin Ågren
2019-01-25 19:51 ` Jeff King
2019-02-25 19:21 ` Martin Ågren
2019-02-26 17:46 ` Jeff King
2019-02-28 20:36 ` [PATCH v4 0/2] " Martin Ågren
2019-02-28 20:36 ` [PATCH v4 1/2] setup: free old value before setting `work_tree` Martin Ågren
2019-02-28 20:36 ` [PATCH v4 2/2] setup: fix memory leaks with `struct repository_format` Martin Ågren
2019-03-06 4:56 ` [PATCH v4 0/2] " Jeff King
2019-01-14 18:34 ` [PATCH v2 3/3] setup: add `clear_repository_format()` Martin Ågren
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAN0heSpfksXsKZrFNSaO_qitAB6gbF7QePQkuN37kAerSe2xWA@mail.gmail.com \
--to=martin.agren@gmail.com \
--cc=git@vger.kernel.org \
--cc=peff@peff.net \
--cc=sandals@crustytoothpaste.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).