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From: Junio C Hamano <gitster@pobox.com>
To: "Glen Choo via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org,
	Philippe Blain <levraiphilippeblain@gmail.com>,
	Jonathan Tan <jonathantanmy@google.com>,
	Glen Choo <chooglen@google.com>
Subject: Re: [PATCH v3 5/8] submodule: return target of submodule symref
Date: Fri, 28 Oct 2022 14:49:09 -0700	[thread overview]
Message-ID: <xmqqfsf7hb56.fsf@gitster.g> (raw)
In-Reply-To: <bd8ffd7cde2feb3853f837778d660c0f47db32ff.1666988096.git.gitgitgadget@gmail.com> (Glen Choo via GitGitGadget's message of "Fri, 28 Oct 2022 20:14:53 +0000")

"Glen Choo via GitGitGadget" <gitgitgadget@gmail.com> writes:

>  int resolve_gitlink_ref(const char *submodule, const char *refname,
> -			struct object_id *oid)
> +			struct object_id *oid, const char **target_out)
>  {
>  	struct ref_store *refs;
>  	int flags;
> +	const char *target;
>  
>  	refs = get_submodule_ref_store(submodule);
>  
>  	if (!refs)
>  		return -1;
> -
> -	if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) ||
> -	    is_null_oid(oid))
> +	target = refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags);
> +	if (!target || is_null_oid(oid))
>  		return -1;
> +	if (target_out)
> +		*target_out = target;
>  	return 0;
>  }

Please remind me why we call this underlying helper _unsafe()?

Isn't it because we return a temporary buffer  (static strbuf),
whose contents is not permanent?

I am wondering if we should force the callers who care enough to
pass the optional **target_out to xstrdup() the result.

  reply	other threads:[~2022-10-28 21:49 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-29 20:54 [PATCH 0/6] clone, submodule update: check out submodule branches Glen Choo via GitGitGadget
2022-08-29 20:54 ` [PATCH 1/6] clone: teach --detach option Glen Choo via GitGitGadget
2022-08-30  4:02   ` Philippe Blain
2022-08-29 20:54 ` [PATCH 2/6] repo-settings: add submodule_propagate_branches Glen Choo via GitGitGadget
2022-08-30  4:02   ` Philippe Blain
2022-08-29 20:54 ` [PATCH 3/6] t5617: drop references to remote-tracking branches Glen Choo via GitGitGadget
2022-08-30  4:03   ` Philippe Blain
2022-08-29 20:54 ` [PATCH 4/6] submodule: return target of submodule symref Glen Choo via GitGitGadget
2022-09-01 20:01   ` Jonathan Tan
2022-09-01 20:46     ` Glen Choo
2022-08-29 20:54 ` [PATCH 5/6] submodule--helper: refactor up-to-date criterion Glen Choo via GitGitGadget
2022-08-29 20:54 ` [PATCH 6/6] clone, submodule update: check out branches Glen Choo via GitGitGadget
2022-08-30  4:03   ` Philippe Blain
2022-08-30 22:54     ` Glen Choo
2022-09-01 20:00   ` Jonathan Tan
2022-10-20 20:20 ` [PATCH v2 0/7] clone, submodule update: check out submodule branches Glen Choo via GitGitGadget
2022-10-20 20:20   ` [PATCH v2 1/7] clone: teach --detach option Glen Choo via GitGitGadget
2022-10-20 20:20   ` [PATCH v2 2/7] repo-settings: add submodule_propagate_branches Glen Choo via GitGitGadget
2022-10-25 18:03     ` Jonathan Tan
2022-10-20 20:20   ` [PATCH v2 3/7] submodule--helper clone: create named branch Glen Choo via GitGitGadget
2022-10-25 18:00     ` Jonathan Tan
2022-10-20 20:20   ` [PATCH v2 4/7] t5617: drop references to remote-tracking branches Glen Choo via GitGitGadget
2022-10-20 20:20   ` [PATCH v2 5/7] submodule: return target of submodule symref Glen Choo via GitGitGadget
2022-10-20 20:20   ` [PATCH v2 6/7] submodule update: refactor update targets Glen Choo via GitGitGadget
2022-10-20 20:20   ` [PATCH v2 7/7] clone, submodule update: create and check out branches Glen Choo via GitGitGadget
2022-10-25 17:56     ` Jonathan Tan
2022-10-25 21:49       ` Glen Choo
2022-10-20 22:40   ` [PATCH v2 0/7] clone, submodule update: check out submodule branches Junio C Hamano
2022-10-20 23:53     ` Glen Choo
2022-10-21  0:01       ` Junio C Hamano
2022-10-28 20:14   ` [PATCH v3 0/8] " Glen Choo via GitGitGadget
2022-10-28 20:14     ` [PATCH v3 1/8] clone: teach --detach option Glen Choo via GitGitGadget
2022-10-28 21:40       ` Junio C Hamano
2022-10-28 21:54         ` Junio C Hamano
2022-10-28 22:55           ` Glen Choo
2022-10-30 18:14             ` Taylor Blau
2022-10-31 17:07               ` Glen Choo
2022-11-08 13:32       ` Philippe Blain
2022-10-28 20:14     ` [PATCH v3 2/8] repo-settings: add submodule_propagate_branches Glen Choo via GitGitGadget
2022-10-28 20:14     ` [PATCH v3 3/8] submodule--helper clone: create named branch Glen Choo via GitGitGadget
2022-10-28 20:14     ` [PATCH v3 4/8] t5617: drop references to remote-tracking branches Glen Choo via GitGitGadget
2022-10-28 20:14     ` [PATCH v3 5/8] submodule: return target of submodule symref Glen Choo via GitGitGadget
2022-10-28 21:49       ` Junio C Hamano [this message]
2022-10-28 23:11         ` Glen Choo
2022-10-28 20:14     ` [PATCH v3 6/8] submodule update: refactor update targets Glen Choo via GitGitGadget
2022-10-28 20:14     ` [PATCH v3 7/8] submodule--helper: remove update_data.suboid Glen Choo via GitGitGadget
2022-11-14 23:45       ` Jonathan Tan
2022-10-28 20:14     ` [PATCH v3 8/8] clone, submodule update: create and check out branches Glen Choo via GitGitGadget
2022-11-08 13:53       ` Philippe Blain
2022-11-15 18:15       ` Jonathan Tan
2022-11-22 18:44         ` Glen Choo
2022-11-23  1:33           ` Jonathan Tan
2022-11-23  4:00             ` Junio C Hamano
2022-10-30 18:19     ` [PATCH v3 0/8] clone, submodule update: check out submodule branches Taylor Blau
2022-11-08 14:23     ` Philippe Blain
2022-11-08 20:43       ` Glen Choo

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