From: DJ Delorie <dj@redhat.com>
To: Alejandro Colomar <alx@kernel.org>
Cc: libc-alpha@sourceware.org, jg@jguk.org, linux-man@vger.kernel.org
Subject: Re: strncpy clarify result may not be null terminated
Date: Wed, 08 Nov 2023 14:58:24 -0500 [thread overview]
Message-ID: <xnleb8qaov.fsf@greed.delorie.com> (raw)
In-Reply-To: <ZUvkIZpGduZ0FMVK@debian>
Perhaps an example that shows the problem?
EXAMPLES
strncpy (buf, "1", 5);
{ '1', 0, 0, 0, 0 }
strncpy (buf, "1234", 5);
{ '1', '2', '3', '4', 0 }
strncpy (buf, "12345", 5);
{ '1', '2', '3', '4', '5' }
strncpy (buf, "123456", 5);
{ '1', '2', '3', '4', '5' }
Maybe strcpy and strncpy shouldn't even share man pages, since they're
not as related as we once thought?
next prev parent reply other threads:[~2023-11-08 19:58 UTC|newest]
Thread overview: 77+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cfbd8674-fe6a-4430-95f1-ec8bde7da32e@jguk.org>
[not found] ` <ZUacobMq0l_O8gjg@debian>
[not found] ` <aeb55af5-1017-4ffd-9824-30b43d5748e3@jguk.org>
[not found] ` <ZUgl2HPJvUge7XYN@debian>
[not found] ` <d40fffcb-524d-44b6-a252-b55a8ddc9fee@jguk.org>
[not found] ` <ZUo6btEFD_z_3NcF@devuan>
[not found] ` <929865e3-17b4-49c4-8fa9-8383885e9904@jguk.org>
[not found] ` <ZUpjI1AHNOMOjdFk@devuan>
[not found] ` <ZUsoIbhrJar6ojux@dj3ntoo>
2023-11-08 9:51 ` Alejandro Colomar
2023-11-08 9:59 ` Thorsten Kukuk
2023-11-08 15:09 ` Alejandro Colomar
[not found] ` <6bcad2492ab843019aa63895beaea2ce@DB6PR04MB3255.eurprd04.prod.outlook.com>
2023-11-08 15:44 ` Thorsten Kukuk
2023-11-08 17:26 ` Adhemerval Zanella Netto
2023-11-08 14:06 ` Zack Weinberg
2023-11-08 15:07 ` Alejandro Colomar
2023-11-08 21:35 ` Carlos O'Donell
2023-11-08 22:11 ` Alejandro Colomar
2023-11-08 23:31 ` Paul Eggert
2023-11-09 0:29 ` Alejandro Colomar
2023-11-09 10:13 ` Jonny Grant
2023-11-09 11:08 ` catenate vs concatenate (was: strncpy clarify result may not be null terminated) Alejandro Colomar
2023-11-09 14:06 ` catenate vs concatenate Jonny Grant
2023-11-27 14:33 ` catenate vs concatenate (was: strncpy clarify result may not be null terminated) Zack Weinberg
2023-11-27 15:08 ` Alejandro Colomar
2023-11-27 15:13 ` Alejandro Colomar
2023-11-27 16:59 ` G. Branden Robinson
2023-11-27 18:35 ` Zack Weinberg
2023-11-27 23:45 ` G. Branden Robinson
2023-11-09 11:13 ` strncpy clarify result may not be null terminated Alejandro Colomar
2023-11-09 14:05 ` Jonny Grant
2023-11-09 15:04 ` Alejandro Colomar
2023-11-08 19:04 ` DJ Delorie
2023-11-08 19:40 ` Alejandro Colomar
2023-11-08 19:58 ` DJ Delorie [this message]
2023-11-08 20:13 ` Alejandro Colomar
2023-11-08 21:07 ` DJ Delorie
2023-11-08 21:50 ` Alejandro Colomar
2023-11-08 22:17 ` [PATCH] stpncpy.3, string_copying.7: Clarify that st[rp]ncpy() do NOT produce a string Alejandro Colomar
2023-11-08 23:06 ` Paul Eggert
2023-11-08 23:28 ` DJ Delorie
2023-11-09 0:24 ` Alejandro Colomar
2023-11-09 14:11 ` Jonny Grant
2023-11-09 14:35 ` Alejandro Colomar
2023-11-09 14:47 ` Jonny Grant
2023-11-09 15:02 ` Alejandro Colomar
2023-11-09 17:30 ` DJ Delorie
2023-11-09 17:54 ` Andreas Schwab
2023-11-09 18:00 ` Alejandro Colomar
2023-11-09 19:42 ` Jonny Grant
2023-11-09 7:23 ` Oskari Pirhonen
2023-11-09 15:20 ` [PATCH v2 1/2] " Alejandro Colomar
2023-11-09 15:20 ` [PATCH v2 2/2] stpncpy.3, string.3, string_copying.7: Clarify that st[rp]ncpy() pad with null bytes Alejandro Colomar
2023-11-10 5:47 ` Oskari Pirhonen
2023-11-10 10:47 ` Alejandro Colomar
[not found] ` <20231108021240.176996-1-mattlloydhouse@gmail.com>
[not found] ` <ZUvilH5kuQfTuZjy@debian>
[not found] ` <20231109031345.245703-1-mattlloydhouse@gmail.com>
2023-11-09 10:31 ` strncpy clarify result may not be null terminated Jonny Grant
2023-11-09 11:38 ` Alejandro Colomar
2023-11-09 12:43 ` Alejandro Colomar
2023-11-09 12:51 ` Xi Ruoyao
2023-11-09 14:01 ` Alejandro Colomar
2023-11-09 18:11 ` Paul Eggert
2023-11-09 23:48 ` Alejandro Colomar
2023-11-10 5:36 ` Paul Eggert
2023-11-10 11:05 ` Alejandro Colomar
2023-11-10 11:47 ` Alejandro Colomar
2023-11-10 17:58 ` Paul Eggert
2023-11-10 18:36 ` Alejandro Colomar
2023-11-10 20:19 ` Alejandro Colomar
2023-11-10 23:44 ` Jonny Grant
2023-11-10 19:52 ` Alejandro Colomar
2023-11-10 22:14 ` Paul Eggert
2023-11-11 21:13 ` Alejandro Colomar
2023-11-11 22:20 ` Paul Eggert
2023-11-12 9:52 ` Jonny Grant
2023-11-12 10:59 ` Alejandro Colomar
2023-11-10 11:36 ` Jonny Grant
2023-11-10 13:15 ` Alejandro Colomar
2023-11-10 11:23 ` Jonny Grant
[not found] ` <CACKs7VDsTdSNwbC6+2LtQ67J_eJiD814xkw2_5XM1Q=iMjLXJA@mail.gmail.com>
2023-11-10 11:06 ` Jonny Grant
2023-11-12 9:17 ` [PATCH 0/2] Expand BUGS section of string_copying(7) Alejandro Colomar
2023-11-12 9:18 ` [PATCH 1/2] string_copying.7: BUGS: *cat(3) functions aren't always bad Alejandro Colomar
2023-11-12 9:18 ` [PATCH 2/2] string_copying.7: BUGS: Document strl{cpy,cat}(3)'s performance problems Alejandro Colomar
2023-11-12 11:26 ` [PATCH v2 0/3] Improve string_copying(7) Alejandro Colomar
2023-11-12 11:26 ` [PATCH v2 1/3] string_copying.7: BUGS: *cat(3) functions aren't always bad Alejandro Colomar
2023-11-12 11:26 ` [PATCH v2 2/3] string_copying.7: BUGS: Document strl{cpy,cat}(3)'s performance problems Alejandro Colomar
2023-11-12 11:27 ` [PATCH v2 3/3] strtcpy.3, string_copying.7: Add strtcpy(3) Alejandro Colomar
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