From: Phillip Wood <phillip.wood123@gmail.com>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: "Junio C Hamano" <gitster@pobox.com>,
phillip.wood@dunelm.org.uk, "Jeff King" <peff@peff.net>,
"Thomas Bock" <bockthom@cs.uni-saarland.de>,
"Derrick Stolee" <derrickstolee@github.com>,
git@vger.kernel.org, "René Scharfe" <l.s.r@web.de>
Subject: Re: [PATCH v2 3/4] parse_commit(): handle broken whitespace-only timestamp
Date: Wed, 26 Apr 2023 15:44:08 +0100 [thread overview]
Message-ID: <01709d21-d641-cfcd-c389-da9aaf84f5be@gmail.com> (raw)
In-Reply-To: <87mt2u3eav.fsf@igel.home>
Hi Andreas
On 26/04/2023 15:31, Andreas Schwab wrote:
> On Apr 26 2023, Phillip Wood wrote:
>
>> On 25/04/2023 17:06, Junio C Hamano wrote:
>>> Phillip Wood <phillip.wood123@gmail.com> writes:
>>>
>>>> This probably doesn't matter in practice but we define our own
>>>> isspace() that does not treat '\v' and '\f' as whitespace. However
>>>> parse_timestamp() (which is just strtoumax()) uses the standard
>>>> library's isspace() which does treat those characters as whitespace
>>>> and is locale dependent. This means we can potentially stop at a
>>>> character that parse_timestamp() treats as whitespace and if there are
>>>> no digits after it we'll still walk past the end of the line. Using
>>>> Rene's suggestion of testing the character with isdigit() would fix
>>>> that. It would also avoid parsing negative timestamps as positive
>>>> numbers
>>
>>>> and reject any timestamps that begin with a locale dependent
>>>> digit.
>>
>> Sorry, that bit is not correct, I've since checked the C standard and I
>> think strtoul() and friends expect ascii digits (isdigit() and isxdigit()
>> are also locale independent unlike isspace(), isalpha() etc.)
>
> The standard says:
>
> In other than the "C" locale, additional locale-specific subject
> sequence forms may be accepted.
Thanks, looking at the standard again I don't know how I managed to miss
that, my initial recollection was correct after all.
Best Wishes
Phillip
next prev parent reply other threads:[~2023-04-26 14:44 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-14 11:37 Weird behavior of 'git log --before' or 'git log --date-order': Commits from 2011 are treated to be before 1980 Thomas Bock
2023-04-15 8:52 ` Jeff King
2023-04-15 8:59 ` Jeff King
2023-04-15 14:10 ` Kristoffer Haugsbakk
2023-04-17 5:40 ` Jeff King
2023-04-17 6:20 ` Kristoffer Haugsbakk
2023-04-17 7:41 ` Jeff King
2023-04-27 22:32 ` Kristoffer Haugsbakk
2023-04-17 9:51 ` Junio C Hamano
2023-04-18 4:12 ` Jeff King
2023-04-18 14:02 ` Derrick Stolee
2023-04-21 14:51 ` Thomas Bock
2023-04-22 13:41 ` [PATCH 0/3] fixing some parse_commit() timestamp corner cases Jeff King
2023-04-22 13:42 ` [PATCH 1/3] t4212: avoid putting git on left-hand side of pipe Jeff King
2023-04-22 13:47 ` [PATCH 2/3] parse_commit(): parse timestamp from end of line Jeff King
2023-04-24 17:05 ` Junio C Hamano
2023-04-25 5:23 ` Jeff King
2023-04-24 16:39 ` [PATCH 0/3] fixing some parse_commit() timestamp corner cases Junio C Hamano
2023-04-25 5:52 ` [PATCH v2 " Jeff King
2023-04-25 5:54 ` Jeff King
2023-04-25 5:54 ` [PATCH v2 1/4] t4212: avoid putting git on left-hand side of pipe Jeff King
2023-04-25 5:54 ` [PATCH v2 2/4] parse_commit(): parse timestamp from end of line Jeff King
2023-04-25 5:54 ` [PATCH v2 3/4] parse_commit(): handle broken whitespace-only timestamp Jeff King
2023-04-25 10:11 ` Phillip Wood
2023-04-25 16:06 ` Junio C Hamano
2023-04-26 11:36 ` Jeff King
2023-04-26 15:32 ` Junio C Hamano
2023-04-27 8:13 ` [PATCH v3 0/4] fixing some parse_commit() timestamp corner cases Jeff King
2023-04-27 8:14 ` [PATCH v3 1/4] t4212: avoid putting git on left-hand side of pipe Jeff King
2023-04-27 8:14 ` [PATCH v3 2/4] parse_commit(): parse timestamp from end of line Jeff King
2023-04-27 8:17 ` [PATCH v3 3/4] parse_commit(): handle broken whitespace-only timestamp Jeff King
2023-04-27 10:11 ` Phillip Wood
2023-04-27 11:55 ` Phillip Wood
2023-04-27 16:46 ` Jeff King
2023-04-27 16:20 ` Junio C Hamano
2023-04-27 16:55 ` Jeff King
2023-04-27 16:25 ` Junio C Hamano
2023-04-27 16:57 ` Jeff King
2023-04-27 8:17 ` [PATCH v3 4/4] parse_commit(): describe more date-parsing failure modes Jeff King
2023-04-27 8:18 ` [PATCH v3 0/4] fixing some parse_commit() timestamp corner cases Jeff King
2023-04-27 16:32 ` Junio C Hamano
2023-04-26 14:06 ` [PATCH v2 3/4] parse_commit(): handle broken whitespace-only timestamp Phillip Wood
2023-04-26 14:31 ` Andreas Schwab
2023-04-26 14:44 ` Phillip Wood [this message]
2023-04-25 5:55 ` [PATCH v2 4/4] parse_commit(): describe more date-parsing failure modes Jeff King
2023-04-22 13:52 ` Weird behavior of 'git log --before' or 'git log --date-order': Commits from 2011 are treated to be before 1980 Jeff King
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=01709d21-d641-cfcd-c389-da9aaf84f5be@gmail.com \
--to=phillip.wood123@gmail.com \
--cc=bockthom@cs.uni-saarland.de \
--cc=derrickstolee@github.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=l.s.r@web.de \
--cc=peff@peff.net \
--cc=phillip.wood@dunelm.org.uk \
--cc=schwab@linux-m68k.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).