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From: Jeff King <peff@peff.net>
To: Teng Long <dyroneteng@gmail.com>
Cc: avarab@gmail.com, derrickstolee@github.com, git@vger.kernel.org,
	gitster@pobox.com, me@ttaylorr.com, tenglong.tl@alibaba-inc.com
Subject: Re: [PATCH v4 4/4] pack-bitmap.c: trace bitmap ignore logs when midx-bitmap is found
Date: Mon, 28 Nov 2022 20:27:55 -0500	[thread overview]
Message-ID: <Y4VgG0Bu1P2NW4d5@coredump.intra.peff.net> (raw)
In-Reply-To: <20221128123740.54250-1-tenglong.tl@alibaba-inc.com>

On Mon, Nov 28, 2022 at 08:37:40PM +0800, Teng Long wrote:

> > > @@ -559,11 +557,20 @@ static int open_midx_bitmap(struct repository *r,
> > >  static int open_bitmap(struct repository *r,
> > >  		       struct bitmap_index *bitmap_git)
> > >  {
> > > +	int found = 0;
> > > +
> > >  	assert(!bitmap_git->map);
> > >
> > > -	if (!open_midx_bitmap(r, bitmap_git))
> > > -		return 0;
> > > -	return open_pack_bitmap(r, bitmap_git);
> > > +	found = !open_midx_bitmap(r, bitmap_git);
> >
> > I think we can drop the initialization of "found = 0"; that value is
> > unused, since we'll always assign to it (I think my initial attempt had
> > setting it to 1 inside the conditional).
> >
> > It's not hurting anything functionally, but it makes the code slightly
> > more confusing to read.
> 
> I agree it's not hurting here, it's OK for me to make the improvement
> here. But I have a question, do we prefer to omit the initialization
> in such scenarios if we make sure it will initialized correctly?

I don't know that we have a particular rule here, but I would say that
yes, if you know the initialization isn't used, then skip it. That
communicates the expectation to anybody reading the code. And if you're
wrong, the compiler will generally notice.

-Peff

  reply	other threads:[~2022-11-29  1:28 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-26  7:09 [PATCH 0/1] pack-bitmap.c: avoid exposing absolute paths Teng Long
2022-08-26  7:09 ` [PATCH 1/1] " Teng Long
2022-08-26 16:34 ` [PATCH 0/1] " Junio C Hamano
2022-08-29  2:48   ` Teng Long
2022-10-26 21:42     ` Taylor Blau
2022-10-26 23:19       ` Ævar Arnfjörð Bjarmason
2022-10-31 13:20         ` Teng Long
2022-10-27 20:45       ` Jeff King
2022-10-30 18:42         ` Taylor Blau
2022-10-31 12:22           ` [PATCH 0/1] pack-bitmap.c: avoid exposing absolute paths Taylor Blau <me@ttaylorr.com> writes: Teng Long
2022-11-02  5:37         ` [PATCH 0/1] pack-bitmap.c: avoid exposing absolute paths Teng Long
2022-11-02  7:54           ` Jeff King
2022-11-02 13:52             ` Teng Long
2022-10-31 13:13       ` Teng Long
2022-11-03  1:00         ` Taylor Blau
2022-11-02  9:20 ` Ævar Arnfjörð Bjarmason
2022-11-02 13:04   ` Teng Long
2022-11-02 12:56 ` [PATCH v2 " Teng Long
2022-11-02 12:56   ` [PATCH v2 1/1] " Teng Long
2022-11-03  1:16     ` Taylor Blau
2022-11-03  9:35       ` Teng Long
2022-11-05  0:35         ` Taylor Blau
2022-11-03  1:21   ` [PATCH v2 0/1] " Taylor Blau
2022-11-03  8:42     ` Teng Long
2022-11-04  3:17   ` [PATCH v3 0/2] " Teng Long
2022-11-04  3:17     ` [PATCH v3 1/2] " Teng Long
2022-11-04 22:11       ` Taylor Blau
2022-11-04  3:17     ` [PATCH v3 2/2] pack-bitmap.c: remove unnecessary "open_pack_index()" calls Teng Long
2022-11-04 22:09       ` Taylor Blau
2022-11-04 22:13     ` [PATCH v3 0/2] pack-bitmap.c: avoid exposing absolute paths Taylor Blau
2022-11-10  7:10     ` Teng Long
2022-11-10  7:10       ` [PATCH v3 1/2] pack-bitmap.c: remove unnecessary "open_pack_index()" calls Teng Long
2022-11-14 22:03         ` Jeff King
2022-11-14 22:14           ` Taylor Blau
2022-11-14 22:31             ` Jeff King
2022-11-14 22:50               ` Taylor Blau
2022-11-10  7:10       ` [PATCH v3 2/2] pack-bitmap.c: avoid exposing absolute paths Teng Long
2022-11-11 22:26       ` [PATCH v3 0/2] " Taylor Blau
2022-11-14 22:23         ` Jeff King
2022-11-17 14:19           ` Teng Long
2022-11-17 15:03             ` Jeff King
2022-11-17 21:57               ` Taylor Blau
2022-11-21  3:27                 ` Teng Long
2022-11-21 12:16     ` [PATCH v4 0/4] " Teng Long
2022-11-21 12:16       ` [PATCH v4 1/4] pack-bitmap.c: remove unnecessary "open_pack_index()" calls Teng Long
2022-11-21 12:16       ` [PATCH v4 2/4] pack-bitmap.c: avoid exposing absolute paths Teng Long
2022-11-21 12:16       ` [PATCH v4 3/4] pack-bitmap.c: break out of the bitmap loop early if not tracing Teng Long
2022-11-21 23:27         ` Junio C Hamano
2022-11-28 13:09           ` Teng Long
2022-11-21 12:16       ` [PATCH v4 4/4] pack-bitmap.c: trace bitmap ignore logs when midx-bitmap is found Teng Long
2022-11-21 19:09         ` Jeff King
2022-11-21 23:29           ` Junio C Hamano
2022-11-28 12:29             ` Teng Long
2022-11-28 12:37           ` Teng Long
2022-11-29  1:27             ` Jeff King [this message]
2022-11-29 13:14               ` Teng Long
2022-11-21 19:04       ` [PATCH v4 0/4] pack-bitmap.c: avoid exposing absolute paths Jeff King
2022-11-28 12:48         ` Teng Long
2022-11-28 14:09       ` [PATCH v5 " Teng Long
2022-11-28 14:09         ` [PATCH v5 1/4] pack-bitmap.c: remove unnecessary "open_pack_index()" calls Teng Long
2022-11-28 14:09         ` [PATCH v5 2/4] pack-bitmap.c: avoid exposing absolute paths Teng Long
2022-11-28 14:09         ` [PATCH v5 3/4] pack-bitmap.c: break out of the bitmap loop early if not tracing Teng Long
2022-11-28 23:26           ` Taylor Blau
2022-11-29 13:17             ` Teng Long
2022-11-28 14:09         ` [PATCH v5 4/4] pack-bitmap.c: trace bitmap ignore logs when midx-bitmap is found Teng Long
2022-11-28 23:30         ` [PATCH v5 0/4] pack-bitmap.c: avoid exposing absolute paths Taylor Blau
2022-11-29 13:21           ` Teng Long

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