From: Han-Wen Nienhuys <hanwen@google.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: Han-Wen Nienhuys via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org, Han-Wen Nienhuys <hanwenn@gmail.com>
Subject: Re: [PATCH] refs.h: make all flags arguments unsigned
Date: Tue, 1 Feb 2022 12:47:11 +0100 [thread overview]
Message-ID: <CAFQ2z_PtNsrSXdCG_5vr99Fz63GDMpC6j7rzLqOn+cZufi+xfQ@mail.gmail.com> (raw)
In-Reply-To: <xmqqa6fbgx85.fsf@gitster.g>
On Tue, Feb 1, 2022 at 3:02 AM Junio C Hamano <gitster@pobox.com> wrote:
>
> "Han-Wen Nienhuys via GitGitGadget" <gitgitgadget@gmail.com> writes:
>
> > From: Han-Wen Nienhuys <hanwen@google.com>
> >
> > As discussed in
> > https://lore.kernel.org/git/xmqqbkzrkevo.fsf@gitster.g/ , we don't
> > want to treat the sign bit specially, so make all flags in refs.h
> > unsigned.
>
> It may be true that we do not want to, but are we sure there is no
> code that already uses some cleverness to make the topmost bit
> special by e.g. doing ugly things like "if (flags < 0)" ;-)?
In refs.h, we don't have any bitmasks that accept 32 different bit
values, so it's hard to see how we would stumble into a case like
that.
> I haven't had energy to vet the entire codebase for all flag words
> and that is why I've never produced a patch like this one myself.
>
> Thanks for carefully vetting after creating this (presumably
> mechanically prepared) patch---producing is the easy part, but
> making sure it does not break unexpectedly is much harder.
I went over the changes once more, uniformizing the naming. I didn't
see any shenanigans.
--
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next prev parent reply other threads:[~2022-02-01 11:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-31 20:15 [PATCH] refs.h: make all flags arguments unsigned Han-Wen Nienhuys via GitGitGadget
2022-02-01 2:02 ` Junio C Hamano
2022-02-01 11:47 ` Han-Wen Nienhuys [this message]
2022-02-01 18:41 ` Junio C Hamano
2022-02-01 12:46 ` [PATCH v2] " Han-Wen Nienhuys via GitGitGadget
2022-02-01 20:20 ` Ævar Arnfjörð Bjarmason
2022-02-01 23:03 ` Junio C Hamano
2022-02-03 14:29 ` Han-Wen Nienhuys
2022-02-03 17:53 ` Ævar Arnfjörð Bjarmason
2022-02-03 18:16 ` Han-Wen Nienhuys
2022-02-03 21:20 ` Ævar Arnfjörð Bjarmason
2022-02-03 18:27 ` Junio C Hamano
2022-02-03 18:33 ` Han-Wen Nienhuys
2022-02-03 19:15 ` Junio C Hamano
2022-02-03 14:26 ` [PATCH v3 0/2] " Han-Wen Nienhuys via GitGitGadget
2022-02-03 14:26 ` [PATCH v3 1/2] " Han-Wen Nienhuys via GitGitGadget
2022-02-03 14:26 ` [PATCH v3 2/2] Uniformize flag argument naming to `flags` or `unused_flags` Han-Wen Nienhuys via GitGitGadget
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