From: Junio C Hamano <gitster@pobox.com>
To: Josh Steadmon <steadmon@google.com>
Cc: git@vger.kernel.org, lessleydennington@gmail.com
Subject: Re: [RFC PATCH] repo-settings: set defaults even when not in a repo
Date: Wed, 23 Mar 2022 13:51:22 -0700 [thread overview]
Message-ID: <xmqqtuboqto5.fsf@gitster.g> (raw)
In-Reply-To: <1b27e0b115f858a422e0a2891688227be8f3db01.1648055915.git.steadmon@google.com> (Josh Steadmon's message of "Wed, 23 Mar 2022 11:03:05 -0700")
Josh Steadmon <steadmon@google.com> writes:
> prepare_repo_settings() initializes a `struct repository` with various
> default config options and settings read from a repository-local config
> file. In 44c7e62 (2021-12-06, repo-settings:prepare_repo_settings only
> in git repos), prepare_repo_settings was changed to issue a BUG() if it
> is called by a process whose CWD is not a Git repository. This approach
> was suggested in [1].
>
> This breaks fuzz-commit-graph, which attempts to parse arbitrary
> fuzzing-engine-provided bytes as a commit graph file.
> commit-graph.c:parse_commit_graph() calls prepare_repo_settings(), but
> since we run the fuzz tests without a valid repository, we are hitting
> the BUG() from 44c7e62 for every test case.
I think the right approach for such a breakage is to ensure it is in
a repository, not to force prepare_repo_settings() to lie. In the
day-to-day real code paths the end user uses, we do want to catch
mistakes in our code that calls prepare_repo_settings() when we are
not in a repository.
prev parent reply other threads:[~2022-03-23 20:51 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-23 18:03 [RFC PATCH] repo-settings: set defaults even when not in a repo Josh Steadmon
2022-03-23 19:22 ` Derrick Stolee
2022-03-23 19:52 ` Taylor Blau
2022-03-28 19:15 ` Josh Steadmon
2022-03-29 1:21 ` Taylor Blau
2022-03-28 19:53 ` Josh Steadmon
2022-03-29 1:22 ` Taylor Blau
2022-03-29 9:03 ` Ævar Arnfjörð Bjarmason
2022-03-30 2:26 ` Taylor Blau
2022-04-09 6:33 ` Josh Steadmon
2022-03-29 9:04 ` Ævar Arnfjörð Bjarmason
2022-03-30 2:34 ` Taylor Blau
2022-03-30 17:38 ` Ævar Arnfjörð Bjarmason
2022-03-30 20:14 ` Junio C Hamano
2022-04-09 6:52 ` [RFC PATCH v2] commit-graph: refactor to avoid prepare_repo_settings Josh Steadmon
2022-06-07 20:02 ` Jonathan Tan
2022-06-14 22:38 ` Josh Steadmon
2022-06-14 22:37 ` [PATCH v3] " Josh Steadmon
2022-06-14 23:32 ` Taylor Blau
2022-06-23 21:59 ` Junio C Hamano
2022-07-14 21:44 ` Josh Steadmon
2022-07-14 21:43 ` [PATCH v4] commit-graph: pass repo_settings instead of repository Josh Steadmon
2022-07-14 22:48 ` Junio C Hamano
2022-03-23 20:11 ` [RFC PATCH] repo-settings: set defaults even when not in a repo Victoria Dye
2022-03-23 20:54 ` Junio C Hamano
2022-03-23 21:19 ` Victoria Dye
2022-03-23 20:51 ` Junio C Hamano [this message]
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