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From: SZEDER Gábor <szeder.dev@gmail.com>
To: Jiang Xin <worldhello.net@gmail.com>
Cc: Junio C Hamano <gitster@pobox.com>,
	Git List <git@vger.kernel.org>, Sun Chao <sunchao9@huawei.com>,
	Johannes Sixt <j6t@kdbg.org>
Subject: Re: [PATCH v5 2/5] pack-redundant: new algorithm to find min packs
Date: Fri, 11 Jan 2019 02:19:41 +0100
Message-ID: <20190111011941.GB840@szeder.dev> (raw)
In-Reply-To: <20190110120142.22271-3-worldhello.net@gmail.com>

On Thu, Jan 10, 2019 at 08:01:39PM +0800, Jiang Xin wrote:
> diff --git a/builtin/pack-redundant.c b/builtin/pack-redundant.c
> index cf9a9aabd4..3655cc7dc6 100644
> --- a/builtin/pack-redundant.c
> +++ b/builtin/pack-redundant.c

> @@ -446,49 +484,37 @@ static void minimize(struct pack_list **min)
>  		pl = pl->next;
>  	}
>  
> +	*min = unique;
> +
>  	/* return if there are no objects missing from the unique set */
>  	if (missing->size == 0) {
> -		*min = unique;
>  		free(missing);
>  		return;
>  	}
>  
> -	/* find the permutations which contain all missing objects */
> -	for (n = 1; n <= pack_list_size(non_unique) && !perm_ok; n++) {
> -		perm_all = perm = get_permutations(non_unique, n);
> -		while (perm) {
> -			if (is_superset(perm->pl, missing)) {
> -				new_perm = xmalloc(sizeof(struct pll));
> -				memcpy(new_perm, perm, sizeof(struct pll));
> -				new_perm->next = perm_ok;
> -				perm_ok = new_perm;
> -			}
> -			perm = perm->next;
> -		}
> -		if (perm_ok)
> -			break;
> -		pll_free(perm_all);
> -	}

Please make sure that all commits in the patch series can be build
cleanly without any warnings (with '-Werror' or preferably with 'make
DEVELOPER=1') and pass the test suite.  This is important, because
unbuildable commits will cause trouble later on, when e.g. 'git
bisect' happens to pick such a commit.

In this case, the removal of the above loop removes all callsites of
the static functions get_permutations(), is_superset(), and
pll_free(), resulting the following compiler error:

  builtin/pack-redundant.c: At top level:
  builtin/pack-redundant.c:289:13: error: ‘pll_free’ defined but not used [-Werror=unused-function]
   static void pll_free(struct pll *l)
               ^
  builtin/pack-redundant.c:309:21: error: ‘get_permutations’ defined but not used [-Werror=unused-function]
   static struct pll * get_permutations(struct pack_list *list, int n)
                       ^
  builtin/pack-redundant.c:343:12: error: ‘is_superset’ defined but not used [-Werror=unused-function]
   static int is_superset(struct pack_list *pl, struct llist *list)
              ^

I see that the last patch in this series removes those three
unused functions, but that patch should be squashed into this one to
keep Git buildable with '-Werror' or DEVELOPER=1.

Furthermore, after building this patch (without '-Werror'), several
tests in 't5323-pack-redundant.sh' fail.  To avoid the test failure I
think the fourth patch ensuring a consistent sort order should be
squashed in as well.



  reply index

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-18  9:58 [PATCH 1/2] " Jiang Xin
2018-12-18  9:58 ` [PATCH 2/2] pack-redundant: remove unused functions Jiang Xin
2018-12-19 12:14   ` [PATCH v2 0/3] pack-redundant: new algorithm to find min packs Jiang Xin
2019-01-02  4:34     ` [PATCH v3 " Jiang Xin
2019-01-02  4:34     ` [PATCH v3 1/3] t5323: test cases for git-pack-redundant Jiang Xin
2019-01-09 12:56       ` SZEDER Gábor
2019-01-09 16:47         ` SZEDER Gábor
2019-01-10 12:01           ` [PATCH v5 0/5] pack-redundant: new algorithm to find min packs Jiang Xin
2019-01-12  9:17             ` [PATCH v6 " Jiang Xin
2019-01-30 11:47               ` [PATCH v7 0/6] " Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 " Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 1/6] t5323: test cases for git-pack-redundant Jiang Xin
2019-02-01 19:42                   ` Eric Sunshine
2019-02-01 21:03                     ` Junio C Hamano
2019-02-01 21:49                       ` Eric Sunshine
2019-02-02 13:30                         ` [PATCH v10 0/6] pack-redundant: new algorithm to find min packs Jiang Xin
2019-02-02 13:30                         ` [PATCH v10 1/6] t5323: test cases for git-pack-redundant Jiang Xin
2019-02-02 13:30                         ` [PATCH v10 2/6] pack-redundant: delay creation of unique_objects Jiang Xin
2019-02-02 13:30                         ` [PATCH v10 3/6] pack-redundant: delete redundant code Jiang Xin
2019-02-02 13:30                         ` [PATCH v10 4/6] pack-redundant: new algorithm to find min packs Jiang Xin
2019-02-02 13:30                         ` [PATCH v10 5/6] pack-redundant: rename pack_list.all_objects Jiang Xin
2019-02-02 13:30                         ` [PATCH v10 6/6] pack-redundant: consistent sort method Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 2/6] pack-redundant: delay creation of unique_objects Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 3/6] pack-redundant: delete redundant code Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 4/6] pack-redundant: new algorithm to find min packs Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 5/6] pack-redundant: rename pack_list.all_objects Jiang Xin
2019-02-01 16:21                 ` [PATCH v9 6/6] pack-redundant: consistent sort method Jiang Xin
2019-01-30 11:47               ` [PATCH v7 1/6] t5323: test cases for git-pack-redundant Jiang Xin
2019-01-31 21:44                 ` Junio C Hamano
2019-02-01  5:44                   ` Jiang Xin
2019-02-01  6:11                     ` Eric Sunshine
2019-02-01  7:23                       ` Jiang Xin
2019-02-01  7:25                         ` Jiang Xin
2019-02-01  9:51                       ` Jiang Xin
2019-01-30 11:47               ` [PATCH v7 2/6] pack-redundant: delay creation of unique_objects Jiang Xin
2019-01-30 11:47               ` [PATCH v7 3/6] pack-redundant: new algorithm to find min packs Jiang Xin
2019-01-31 19:30                 ` Junio C Hamano
2019-02-01  9:55                   ` Jiang Xin
2019-01-30 11:47               ` [PATCH v7 4/6] pack-redundant: remove unused functions Jiang Xin
2019-01-30 15:03                 ` [PATCH v8 1/1] pack-redundant: delete redundant code 16657101987
2019-01-30 11:47               ` [PATCH v7 5/6] pack-redundant: rename pack_list.all_objects Jiang Xin
2019-01-30 11:47               ` [PATCH v7 6/6] pack-redundant: consistent sort method Jiang Xin
2019-01-12  9:17             ` [PATCH v6 1/5] t5323: test cases for git-pack-redundant Jiang Xin
2019-01-12  9:17             ` [PATCH v6 2/5] pack-redundant: new algorithm to find min packs Jiang Xin
2019-01-12  9:17             ` [PATCH v6 3/5] pack-redundant: remove unused functions Jiang Xin
2019-01-12  9:17             ` [PATCH v6 4/5] pack-redundant: rename pack_list.all_objects Jiang Xin
2019-01-12  9:17             ` [PATCH v6 5/5] pack-redundant: consistent sort method Jiang Xin
2019-01-10 12:01           ` [PATCH v5 1/5] t5323: test cases for git-pack-redundant Jiang Xin
2019-01-10 21:11             ` Junio C Hamano
2019-01-11  1:59               ` Jiang Xin
2019-01-11 18:00                 ` Junio C Hamano
2019-01-10 12:01           ` [PATCH v5 2/5] pack-redundant: new algorithm to find min packs Jiang Xin
2019-01-11  1:19             ` SZEDER Gábor [this message]
2019-01-10 12:01           ` [PATCH v5 3/5] pack-redundant: rename pack_list.all_objects Jiang Xin
2019-01-10 12:01           ` [PATCH v5 4/5] pack-redundant: consistent sort method Jiang Xin
2019-01-10 20:05             ` SZEDER Gábor
2019-01-10 12:01           ` [PATCH v5 5/5] pack-redundant: remove unused functions Jiang Xin
2019-01-10  3:28         ` [PATCH v3 1/3] t5323: test cases for git-pack-redundant Jiang Xin
2019-01-10  7:11           ` Johannes Sixt
2019-01-10 11:57           ` SZEDER Gábor
2019-01-10 12:25             ` Torsten Bögershausen
2019-01-10 17:36             ` Junio C Hamano
2019-01-15 20:30             ` [PATCH/RFC v1 1/1] test-lint: sed -E (or -a, -l) are not portable tboegi
2019-01-15 21:09               ` Eric Sunshine
2019-01-16 11:24               ` Ævar Arnfjörð Bjarmason
2019-01-20  7:53             ` [PATCH/RFC v2 1/1] test-lint: Only use only sed [-n] [-e command] [-f command_file] tboegi
2019-01-22 19:47               ` Junio C Hamano
2019-01-22 20:00                 ` Torsten Bögershausen
2019-01-22 21:15                   ` Eric Sunshine
2019-01-23  6:35                     ` Torsten Bögershausen
2019-01-23 17:54                       ` Junio C Hamano
2019-01-25 19:12                         ` Torsten Bögershausen
2019-01-27 22:34                           ` Junio C Hamano
2019-01-02  4:34     ` [PATCH v3 2/3] pack-redundant: new algorithm to find min packs Jiang Xin
2019-01-02  4:34     ` [PATCH v3 3/3] pack-redundant: remove unused functions Jiang Xin
2019-01-08 16:40       ` [PATCH v4 0/1] " 16657101987
2019-01-08 19:30         ` Junio C Hamano
2019-01-09  0:29           ` 16657101987
2019-01-08 16:43       ` [PATCH v4 1/1] " 16657101987
2019-01-08 16:45       ` [PATCH v4 0/1] " 16657101987
2018-12-19 12:14   ` [PATCH v2 1/3] t5322: test cases for git-pack-redundant Jiang Xin
2018-12-19 12:14   ` [PATCH v2 2/3] pack-redundant: new algorithm to find min packs Jiang Xin
2018-12-19 12:14   ` [PATCH v2 3/3] pack-redundant: remove unused functions Jiang Xin

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