From: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
To: "René Scharfe" <l.s.r@web.de>
Cc: Git List <git@vger.kernel.org>, Jeff King <peff@peff.net>,
Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 2/2] parse-options: use and require int pointer for OPT_CMDMODE
Date: Tue, 3 Oct 2023 11:38:25 +0200 [thread overview]
Message-ID: <ZRvhEWHWn4nDynD0@ugly> (raw)
In-Reply-To: <d9defed8-4e7e-4b84-be3d-57155d973320@web.de>
On Tue, Oct 03, 2023 at 10:49:12AM +0200, René Scharfe wrote:
>Am 21.09.23 um 12:40 schrieb Oswald Buddenhagen:
>> On Wed, Sep 20, 2023 at 10:18:10AM +0200, René Scharfe wrote:
>>> If we base it on type size then we're making assumptions that I
>>> find hard to justify.
>>>
>> the only one i can think of is signedness. i think this can be safely
>> ignored as long as we use only small positive integers.
>
>I don't fully understand the pointer-sign warning, so I'm not
>confident enough to silence it.
>
in theory, differently signed integers may have completely different
binary representations. but afaik, that only ever mattered for negative
numbers. and c++20 actually codifies two's complement, which was the
de-facto standard for decades already.
so in practice it just means that we may be assigning a value that is
outside the range of the actual type. but small positive values are
compatible between signed and unsiged types.
regards
next prev parent reply other threads:[~2023-10-03 9:38 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-09 21:10 [PATCH 1/2] parse-options: add int value pointer to struct option René Scharfe
2023-09-09 21:14 ` [PATCH 2/2] parse-options: use and require int pointer for OPT_CMDMODE René Scharfe
2023-09-10 10:18 ` Oswald Buddenhagen
2023-09-11 20:11 ` René Scharfe
2023-09-12 8:40 ` Jeff King
2023-09-16 17:45 ` Junio C Hamano
2023-09-18 9:28 ` René Scharfe
2023-09-18 10:10 ` Oswald Buddenhagen
2023-09-19 7:41 ` René Scharfe
2023-09-21 11:07 ` [PATCH] am: fix error message in parse_opt_show_current_patch() Oswald Buddenhagen
2023-09-21 19:09 ` Junio C Hamano
2023-09-21 19:28 ` Oswald Buddenhagen
2023-09-18 13:33 ` [PATCH 2/2] parse-options: use and require int pointer for OPT_CMDMODE Phillip Wood
2023-09-18 17:11 ` Junio C Hamano
2023-09-18 19:48 ` Phillip Wood
2023-10-03 8:49 ` René Scharfe
2023-10-03 17:15 ` Junio C Hamano
2023-09-19 7:47 ` René Scharfe
2023-09-11 19:12 ` Junio C Hamano
2023-09-11 20:11 ` René Scharfe
2023-09-19 9:40 ` Oswald Buddenhagen
2023-09-20 8:18 ` René Scharfe
2023-09-21 10:40 ` Oswald Buddenhagen
2023-10-03 8:49 ` René Scharfe
2023-10-03 9:38 ` Oswald Buddenhagen [this message]
2023-10-03 17:54 ` René Scharfe
2023-10-03 18:24 ` Oswald Buddenhagen
2023-09-10 18:40 ` [PATCH 1/2] parse-options: add int value pointer to struct option Taylor Blau
2023-09-11 19:19 ` Junio C Hamano
2023-09-11 22:28 ` Oswald Buddenhagen
2023-09-18 11:34 ` Kristoffer Haugsbakk
2023-09-18 9:53 ` René Scharfe
2023-09-18 10:28 ` Oswald Buddenhagen
2023-09-18 16:17 ` Junio C Hamano
2023-09-20 11:34 ` René Scharfe
2023-09-11 20:12 ` René Scharfe
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