From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: Johannes Sixt <j6t@kdbg.org>
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Martin Ågren" <martin.agren@gmail.com>,
git@vger.kernel.org
Subject: Re: [PATCH 5/5] cbtree.h: define cb_init() in terms of CBTREE_INIT
Date: Mon, 27 Sep 2021 13:02:35 +0200 [thread overview]
Message-ID: <87czou1dmp.fsf@evledraar.gmail.com> (raw)
In-Reply-To: <694f477d-b387-c8ea-4138-0e9334540c69@kdbg.org>
On Mon, Sep 27 2021, Johannes Sixt wrote:
> Am 27.09.21 um 02:39 schrieb Ævar Arnfjörð Bjarmason:
>> --- a/cbtree.h
>> +++ b/cbtree.h
>> @@ -37,11 +37,12 @@ enum cb_next {
>> CB_BREAK = 1
>> };
>>
>> -#define CBTREE_INIT { .root = NULL }
>> +#define CBTREE_INIT { 0 }
>>
>> static inline void cb_init(struct cb_tree *t)
>> {
>> - t->root = NULL;
>> + struct cb_tree blank = CBTREE_INIT;
>
> This could be
>
> static const struct cb_tree blank = CBTREE_INIT;
*nod*...
>> + memcpy(t, &blank, sizeof(*t));
>
> Is
> *t = blank;
>
> not a thing in C?
>
> -- Hannes
...but to both this & the above my reply in the side-thread at
https://lore.kernel.org/git/87h7e61duk.fsf@evledraar.gmail.com/
applies. I.e. this is just following a pattern I got from Jeff King &
used in bd4232fac33 (Merge branch 'ab/struct-init', 2021-07-16).
FWIW with "const" in general I don't use it as much as I'd personally
prefer, see e.g. [1] for one recent discussion, but maybe there wouldn't
be any push-back in this case...
1. https://lore.kernel.org/git/patch-1.1-c317e6e125e-20210921T124416Z-avarab@gmail.com/
next prev parent reply other threads:[~2021-09-27 11:06 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 0:39 [PATCH 0/5] Designated initializer cleanup & conversion Ævar Arnfjörð Bjarmason
2021-09-27 0:39 ` [PATCH 1/5] submodule-config.h: remove unused SUBMODULE_INIT macro Ævar Arnfjörð Bjarmason
2021-09-27 0:39 ` [PATCH 2/5] *.[ch] *_INIT macros: use { 0 } for a "zero out" idiom Ævar Arnfjörð Bjarmason
2021-09-27 2:27 ` Eric Sunshine
2021-09-27 6:35 ` Johannes Sixt
2021-09-27 20:25 ` Junio C Hamano
2021-09-27 0:39 ` [PATCH 3/5] *.h _INIT macros: don't specify fields equal to 0 Ævar Arnfjörð Bjarmason
2021-09-27 0:39 ` [PATCH 4/5] *.h: move some *_INIT to designated initializers Ævar Arnfjörð Bjarmason
2021-09-27 0:39 ` [PATCH 5/5] cbtree.h: define cb_init() in terms of CBTREE_INIT Ævar Arnfjörð Bjarmason
2021-09-27 6:37 ` Johannes Sixt
2021-09-27 11:02 ` Ævar Arnfjörð Bjarmason [this message]
2021-09-27 23:54 ` Jeff King
2021-09-28 6:15 ` Johannes Sixt
2021-09-28 18:32 ` Junio C Hamano
2021-09-28 19:42 ` Ævar Arnfjörð Bjarmason
2021-09-28 20:50 ` Junio C Hamano
2021-09-27 9:13 ` Phillip Wood
2021-09-27 11:00 ` Ævar Arnfjörð Bjarmason
2021-09-30 10:01 ` Phillip Wood
2021-09-27 12:54 ` [PATCH v2 0/5] Designated initializer cleanup & conversion Ævar Arnfjörð Bjarmason
2021-09-27 12:54 ` [PATCH v2 1/5] submodule-config.h: remove unused SUBMODULE_INIT macro Ævar Arnfjörð Bjarmason
2021-09-27 23:34 ` Jeff King
2021-09-27 12:54 ` [PATCH v2 2/5] *.[ch] *_INIT macros: use { 0 } for a "zero out" idiom Ævar Arnfjörð Bjarmason
2021-09-27 23:24 ` Jeff King
2021-09-28 0:25 ` Ævar Arnfjörð Bjarmason
2021-09-28 0:46 ` Jeff King
2021-09-28 1:44 ` Ramsay Jones
2021-09-27 12:54 ` [PATCH v2 3/5] *.h _INIT macros: don't specify fields equal to 0 Ævar Arnfjörð Bjarmason
2021-09-27 21:54 ` Junio C Hamano
2021-09-27 12:54 ` [PATCH v2 4/5] *.h: move some *_INIT to designated initializers Ævar Arnfjörð Bjarmason
2021-09-27 23:57 ` Junio C Hamano
2021-09-27 12:54 ` [PATCH v2 5/5] cbtree.h: define cb_init() in terms of CBTREE_INIT Ævar Arnfjörð Bjarmason
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