From: Derrick Stolee <stolee@gmail.com>
To: Mike Hommey <mh@glandium.org>, Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org
Subject: Re: [PATCH] Fix leak in credential_apply_config
Date: Fri, 20 Aug 2021 10:58:56 -0400 [thread overview]
Message-ID: <ffa1786e-f69f-3d76-98dc-7fa5cdbd31c0@gmail.com> (raw)
In-Reply-To: <20210820084413.1503711-1-mh@glandium.org>
On 8/20/2021 4:44 AM, Mike Hommey wrote:
> normalized_url = url_normalize(url.buf, &config.url);
>
> git_config(urlmatch_config_entry, &config);
> + string_list_clear(&config.vars, 1);
> free(normalized_url);
> strbuf_release(&url);
A good find! This is obviously correct and a valuable change
to make. If you are interested in doing a little extra work,
then I think there is something more we could do here.
I took a look at the rest of "struct urlmatch_config" to see
if anything else needed to be cleared, and it turns out that
config.url.url is an allocated string, but happens to be
equal to normalized_url, which is freed here.
Perhaps the optimal organization would be to have a
clear_urlmatch_config() method that clears all allocated data
within the config, and change things like url_normalize()
return a 'const char *' to make it clear that the url should
be freed somewhere else.
It would help unify the handling of code that is somewhat
duplicated (but slightly different each time) across
credential_apply_config(), http_init(), get_urlmatch(),
and cmd__urlmatch_normalization().
Thanks,
-Stolee
next prev parent reply other threads:[~2021-08-20 14:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-20 8:44 [PATCH] Fix leak in credential_apply_config Mike Hommey
2021-08-20 14:58 ` Derrick Stolee [this message]
2021-08-20 17:56 ` Jeff King
2021-08-20 17:57 ` Jeff King
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