From: Florian Weimer <fweimer@redhat.com>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: Alejandro Colomar via Libc-alpha <libc-alpha@sourceware.org>,
Alejandro Colomar <colomar.6.4.3@gmail.com>,
linux-man@vger.kernel.org, mtk.manpages@gmail.com
Subject: Re: [PATCH 1/2] system_data_types.7: Document size_t
Date: Fri, 18 Sep 2020 19:53:44 +0200 [thread overview]
Message-ID: <87imcb0y53.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <ad2a293d-1e26-8279-7521-4093f4200a59@cs.ucla.edu> (Paul Eggert's message of "Fri, 18 Sep 2020 10:42:28 -0700")
* Paul Eggert:
> On 9/18/20 7:34 AM, Florian Weimer via Libc-alpha wrote:
>> the length modifier for printf and scanf is z, commently used as
>> %zu or %zx (%zd is for ssize_t).
>
> While %zd works for ssize_t in glibc, POSIX doesn't guarantee that
> it'll work, as ssize_t might not have the same width as size_t. (If
> memory serves this goes back to the bad old days when size_t was 64
> bits and ssize_t 32 bits on some platforms.) So if we document %zd we
> should say it's a GNU extension to POSIX, or something like that.
I didn't know that. It's a good suggestion, thanks.
Florian
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next prev parent reply other threads:[~2020-09-18 17:53 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-18 11:27 [PATCH 0/2] Document size_t Alejandro Colomar
2020-09-18 11:27 ` [PATCH 1/2] system_data_types.7: " Alejandro Colomar
2020-09-18 14:34 ` Florian Weimer
2020-09-18 15:53 ` Alejandro Colomar
2020-09-18 17:27 ` Florian Weimer
2020-09-18 17:42 ` Paul Eggert
2020-09-18 17:53 ` Florian Weimer [this message]
2020-09-30 15:50 ` Joseph Myers
2020-09-18 20:13 ` Michael Kerrisk (man-pages)
2020-09-28 13:41 ` Dave Martin
2020-09-28 13:48 ` Alejandro Colomar
2020-09-28 13:55 ` G. Branden Robinson
2020-09-28 14:15 ` Dave Martin
2020-09-28 14:51 ` Alejandro Colomar
2020-09-28 15:16 ` [RFC] system_data_types.7: wfix + ffix Alejandro Colomar
2020-09-29 10:37 ` Dave Martin
2020-09-29 11:34 ` Michael Kerrisk (man-pages)
2020-09-29 12:10 ` Alejandro Colomar
2020-09-29 14:22 ` [PATCH v2] system_data_types.7: Improve "Include" wording and format, and explain it in NOTES Alejandro Colomar
2020-09-29 14:43 ` Dave Martin
2020-09-29 14:52 ` Alejandro Colomar
2020-09-29 15:06 ` Michael Kerrisk (man-pages)
2020-09-29 15:13 ` Dave Martin
2020-09-29 15:21 ` Alejandro Colomar
2020-09-29 15:10 ` Dave Martin
2020-09-29 11:57 ` [RFC] system_data_types.7: wfix + ffix Alejandro Colomar
2020-09-30 17:16 ` [PATCH 1/2] system_data_types.7: Document size_t Joseph Myers
2020-09-29 11:11 ` Michael Kerrisk (man-pages)
2020-09-28 14:47 ` Alejandro Colomar
2020-09-18 11:27 ` [PATCH 2/2] size_t.3: New link to new documented type in system_data_types(7) Alejandro Colomar
2020-09-18 20:14 ` Michael Kerrisk (man-pages)
2020-09-18 20:13 ` [PATCH 0/2] Document size_t Michael Kerrisk (man-pages)
2020-09-18 21:28 ` Alejandro Colomar
2020-09-18 21:32 ` Florian Weimer
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