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From: Joseph Myers <joseph@codesourcery.com>
To: "H.J. Lu" <hjl.tools@gmail.com>
Cc: <libc-alpha@sourceware.org>
Subject: Re: [PATCH] sysconf: Add _SC_MINSIGSTKSZ/_SC_SIGSTKSZ [BZ #20305]
Date: Mon, 12 Oct 2020 22:03:57 +0000	[thread overview]
Message-ID: <alpine.DEB.2.21.2010122201030.4518@digraph.polyomino.org.uk> (raw)
In-Reply-To: <20201010121935.3263605-1-hjl.tools@gmail.com>

On Sat, 10 Oct 2020, H.J. Lu via Libc-alpha wrote:

> +* Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ.  When _SC_SIGSTKSZ_SOURCE is
> +  defined, MINSIGSTKSZ and SIGSTKSZ are no longer constant on Linux.
> +  MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ) and SIGSTKSZ
> +  is redefined to sysconf (_SC_SIGSTKSZ).

I don't think the _SC_SIGSTKSZ_SOURCE option is a good idea.  But in any 
case, all feature test macros need to be documented in creature.texi, and 
the new _SC_* constants would need documenting in conf.texi, with 
appropriate documentation that they are GNU extensions.

> +#ifdef __USE_SC_SIGSTKSZ

And the internal macros for new feature test macros ought to be tested via 
__GLIBC_USE (thus, always defined to either 0 or 1) rather than #ifdef.

-- 
Joseph S. Myers
joseph@codesourcery.com

  parent reply	other threads:[~2020-10-12 22:04 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-10 12:19 H.J. Lu
2020-10-12  7:53 ` Szabolcs Nagy
2020-10-12 11:04   ` Dave Martin
2020-10-12 12:42     ` V4 " H.J. Lu
2020-10-12 13:21       ` Dave Martin
2020-10-12 14:12     ` Szabolcs Nagy
2020-10-12 14:37       ` Dave Martin
2020-10-12 15:36         ` [libc-coord] " Rich Felker
2020-10-12 22:03 ` Joseph Myers [this message]
2020-10-13 20:32   ` V5 " H.J. Lu
2020-10-14 17:47     ` Dave Martin
2020-10-14 18:07       ` Florian Weimer
2020-10-19 16:30         ` Dave Martin
2020-10-15 11:57       ` V6 " H.J. Lu
2020-10-19 15:08         ` Dave Martin
2020-10-19 21:32           ` H.J. Lu
2020-10-20  9:19             ` Dave Martin
2020-10-20 14:59               ` H.J. Lu
2020-10-20 15:22                 ` Dave Martin
2020-10-20 18:19                 ` V7 " H.J. Lu
2020-11-03  3:06                   ` PING: " H.J. Lu
2020-11-04 16:50                     ` Dave Martin
2020-11-04 17:48                       ` H.J. Lu
2020-11-18 14:13                         ` H.J. Lu
2020-11-18 14:25                           ` Zack Weinberg
2020-11-18 14:40                             ` H.J. Lu
2020-11-18 15:12                               ` Zack Weinberg
2020-11-18 15:17                                 ` H.J. Lu
2020-11-18 15:20                                   ` Florian Weimer
2020-11-18 17:04                                     ` Dave Martin
2020-11-18 17:35                                       ` Florian Weimer
2020-11-18 17:48                                         ` H.J. Lu
2020-11-18 18:09                                         ` Dave Martin
2020-11-19 14:59                                           ` Szabolcs Nagy
2020-11-19 15:10                                             ` H.J. Lu
2020-11-19 15:39                                             ` Zack Weinberg
2020-11-19 15:51                                               ` Florian Weimer
2020-11-19 16:16                                               ` Rich Felker
2020-11-19 16:52                                                 ` Dave Martin
2020-11-19 16:37                                             ` Dave Martin
2020-11-19 17:29                                               ` Rich Felker
2020-11-19 17:33                                               ` Szabolcs Nagy
2020-11-19 19:39                                                 ` Dave Martin
2020-11-20 14:08                                           ` H.J. Lu
2020-11-20 14:11                                             ` Florian Weimer
2020-11-20 23:13                                               ` V8 " H.J. Lu
2021-01-20 14:16                                                 ` Carlos O'Donell
2021-01-20 15:05                                                   ` V9 " H.J. Lu
2021-01-22 19:41                                                     ` V10 " H.J. Lu
2021-01-25 13:31                                                       ` Carlos O'Donell
2021-01-25 13:57                                                         ` H.J. Lu
2021-01-25 13:59                                                           ` Carlos O'Donell
2021-01-25 13:58                                                       ` Carlos O'Donell
2021-01-25 14:16                                                         ` Florian Weimer
2021-02-02 13:08                                                           ` Carlos O'Donell
2021-01-25 14:34                                                         ` Carlos O'Donell
2021-01-20 15:06                                                   ` V8 " Florian Weimer
2021-01-20 15:30                                                     ` Carlos O'Donell
2021-01-20 15:33                                                       ` H.J. Lu
2021-01-20 15:59                                                         ` Carlos O'Donell
2021-01-20 16:04                                                           ` H.J. Lu
2021-01-20 15:33                                                       ` Florian Weimer
2020-10-15 12:26       ` [PATCH] Deprecate SIGSTKSZ/MINSIGSTKSZ with _SC_SIGSTKSZ_SOURCE H.J. Lu
2020-10-15 19:59         ` Joseph Myers
2020-10-15 21:22           ` V2 " H.J. Lu
2020-10-16  0:57             ` Joseph Myers
2021-07-09 18:53             ` Carlos O'Donell
2021-07-09 19:34               ` H.J. Lu
2020-10-12 22:07 ` [PATCH] sysconf: Add _SC_MINSIGSTKSZ/_SC_SIGSTKSZ [BZ #20305] Joseph Myers

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