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From: Junio C Hamano <gitster@pobox.com>
To: "SZEDER Gábor" <szeder.dev@gmail.com>
Cc: David Turner <novalis@novalis.org>,
	Johannes Schindelin <johannes.schindelin@gmx.de>,
	git@vger.kernel.org
Subject: Re: [PATCH 5/5] path.c: don't call the match function without value in trie_find()
Date: Wed, 23 Oct 2019 13:01:00 +0900	[thread overview]
Message-ID: <xmqqa79si003.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <20191021205703.GB4348@szeder.dev> ("SZEDER =?utf-8?Q?G=C3=A1?= =?utf-8?Q?bor=22's?= message of "Mon, 21 Oct 2019 22:57:03 +0200")

SZEDER Gábor <szeder.dev@gmail.com> writes:

>>   - b9317d55a3 added two new keys to the trie: 'logs/refs/rewritten'
>>     and 'logs/refs/worktree', next to the already existing
>>     'logs/refs/bisect'.  This resulted in a trie node with the path
>>     'logs/refs', which didn't exist before, and which doesn't have a
>
> Oops, I missed the trailing slash, that must be 'logs/refs/'!
>
>>     value attached.  A query for 'logs/refs/' finds this node and then
>>     hits that one callsite of the match function which doesn't check
>>     for the value's existence, and thus invokes the match function
>>     with NULL as value.

Given that the trie is maintained by hand in common_list[], I wonder
if we can mechanically catch errors like the one b9317d55a3 added,
by perhaps having a self-test function that a t/helper/ program
calls to perform consistency check after the "git" gets built.

Thanks.




  reply	other threads:[~2019-10-23  4:01 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-16  7:07 [PATCH 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-16  7:07 ` [PATCH 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-16  7:07 ` [PATCH 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-16 11:04   ` SZEDER Gábor
2019-10-17  7:15     ` Junio C Hamano
2019-10-17 22:05     ` Johannes Schindelin
2019-10-18 11:06       ` SZEDER Gábor
2019-10-18 11:35         ` SZEDER Gábor
2019-10-21 16:00           ` [PATCH 0/5] path.c: a couple of common dir/trie fixes SZEDER Gábor
2019-10-21 16:00             ` [PATCH 1/5] Documentation: mention more worktree-specific exceptions SZEDER Gábor
2019-10-21 16:00             ` [PATCH 2/5] path.c: clarify trie_find()'s in-code comment SZEDER Gábor
2019-10-21 16:00             ` [PATCH 3/5] path.c: mark 'logs/HEAD' in 'common_list' as file SZEDER Gábor
2019-10-21 16:00             ` [PATCH 4/5] path.c: clarify two field names in 'struct common_dir' SZEDER Gábor
2019-10-21 16:00             ` [PATCH 5/5] path.c: don't call the match function without value in trie_find() SZEDER Gábor
2019-10-21 17:39               ` David Turner
2019-10-21 20:57               ` SZEDER Gábor
2019-10-23  4:01                 ` Junio C Hamano [this message]
2019-10-23 16:20                   ` SZEDER Gábor
2019-10-24  3:29                     ` Junio C Hamano
2019-10-28 10:57               ` Johannes Schindelin
2019-10-28 12:00                 ` SZEDER Gábor
2019-10-28 21:30                   ` Johannes Schindelin
2019-10-18 11:42         ` [PATCH 0/2] path.c: minor common_list fixes SZEDER Gábor
2019-10-18 11:42           ` [PATCH 1/2] path.c: fix field name in 'struct common_dir' SZEDER Gábor
2019-10-18 11:42           ` [PATCH 2/2] path.c: mark 'logs/HEAD' in 'common_list' as file SZEDER Gábor
2019-10-21 19:35           ` [PATCH 0/2] path.c: minor common_list fixes Johannes Schindelin
2019-10-17 22:07 ` [PATCH v2 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-17 22:07   ` [PATCH v2 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-17 22:07   ` [PATCH v2 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-18  1:23     ` Junio C Hamano
2019-10-18 12:35       ` SZEDER Gábor
2019-10-21 20:26       ` Johannes Schindelin
2019-10-23  2:12         ` Junio C Hamano
2019-10-21 21:54   ` [PATCH v3 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-21 21:54     ` [PATCH v3 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-21 21:54     ` [PATCH v3 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-22 16:01       ` SZEDER Gábor
2019-10-23  3:38         ` Junio C Hamano
2019-10-28 12:01         ` Johannes Schindelin
2019-10-28 12:32           ` SZEDER Gábor
2019-10-28 17:30           ` Junio C Hamano
2019-10-28 12:57     ` [PATCH v4 0/2] Handle git_path() with lock files correctly in worktrees Johannes Schindelin via GitGitGadget
2019-10-28 12:57       ` [PATCH v4 1/2] t1400: wrap setup code in test case Johannes Schindelin via GitGitGadget
2019-10-28 12:57       ` [PATCH v4 2/2] git_path(): handle `.lock` files correctly Johannes Schindelin via GitGitGadget
2019-10-29  3:39       ` [PATCH v4 0/2] Handle git_path() with lock files correctly in worktrees Junio C Hamano

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