From: Szabolcs Nagy <nsz@port70.net>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: libc-coord@lists.openwall.com, Rich Felker <dalias@libc.org>,
linux-man@vger.kernel.org, musl@lists.openwall.com,
libc-alpha@sourceware.org
Subject: [musl] Re: [libc-coord] Re: [musl] Re: regression in man pages for interfaces using loff_t
Date: Sat, 1 Jul 2023 15:36:52 +0200 [thread overview]
Message-ID: <20230701133652.GF3630668@port70.net> (raw)
In-Reply-To: <f3f58057-f764-b4bf-a3fe-92867cfa3131@cs.ucla.edu>
* Paul Eggert <eggert@cs.ucla.edu> [2023-07-01 00:24:27 -0700]:
> On 2023-06-30 16:37, Rich Felker wrote:
> > This is still changing the documentated signature, which isn't really
> > nice, and would not be compatible with glibc unless glibc went out of
> > its way to hide those functions when _FILE_OFFSET_BITS is 32.
>
> I don't see any incompatibility with glibc and the changes I proposed. The
> changes merely weaken the spec in the man pages in an area where the spec
> should be weakened. glibc is compatible with the spec before it was changed
> to use off64_t, it's compatible with the spec now that it uses off64_t, and
> it would continue to be compatible with the spec if the proposed changes are
> adopted.
loff_t * can be incompatible with off64_t * as well as off_t *.
the documentation change can break the api of an implementation,
it is not weakening the spec.
(it can also break abi if loff_t has different abi than off64_t. two
integer types can have same range, representation and syscall argument
passing abi, but different libc abi and different c++ abi)
i don't think you can claim that glibc is compatible either way, as
a future target port can define loff_t differently than off64_t.
next prev parent reply other threads:[~2023-07-01 13:37 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-28 17:53 [musl] " Rich Felker
2023-06-28 18:21 ` [musl] " Paul Eggert
2023-06-28 19:15 ` Rich Felker
2023-06-30 7:11 ` Paul Eggert
2023-06-30 8:02 ` [musl] Re: [libc-coord] " Jonathan Wakely
2023-06-30 8:14 ` Jonathan Wakely
2023-06-30 8:30 ` Sam James
2023-06-30 19:44 ` Paul Eggert
2023-07-02 1:18 ` A. Wilcox
2023-07-02 19:21 ` Paul Eggert
2023-07-03 18:16 ` Jakub Wilk
2023-07-03 21:35 ` Paul Eggert
2023-07-08 17:03 ` Alejandro Colomar
2023-07-09 6:07 ` [musl] [PATCH v4] off64_t: prefer off_t for splice, etc Paul Eggert
2023-07-09 6:16 ` [musl] Re: [libc-coord] " Sam James
2023-07-15 15:08 ` Alejandro Colomar
2023-07-15 18:35 ` Rich Felker
2023-07-15 20:01 ` Paul Eggert
2023-07-16 0:35 ` Alejandro Colomar
2023-07-16 0:39 ` Alejandro Colomar
2023-06-30 23:37 ` [musl] Re: regression in man pages for interfaces using loff_t Rich Felker
2023-07-01 7:24 ` [musl] Re: [libc-coord] " Paul Eggert
2023-07-01 13:36 ` Szabolcs Nagy [this message]
2023-07-01 23:02 ` Paul Eggert
2023-07-01 14:32 ` Rich Felker
2023-07-01 18:45 ` Alejandro Colomar
2023-07-01 23:06 ` Paul Eggert
2023-06-28 19:19 ` Szabolcs Nagy
2023-06-28 19:28 ` Rich Felker
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