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Re: [PING] [PATCH v2] manual: Document missing feature test macros.

• From: Joseph Myers <joseph at codesourcery dot com>
• To: Rical Jasan <ricaljasan at pacific dot net>
• Cc: libc-alpha <libc-alpha at sourceware dot org>, Michael Kerrisk<mtk dot manpages at gmail dot com>, Zack Weinberg <zackw at panix dot com>, Carlos O'Donell<carlos at redhat dot com>
• Date: Thu, 10 Aug 2017 22:26:46 +0000
• Subject: Re: [PING] [PATCH v2] manual: Document missing feature test macros.
• Authentication-results: sourceware.org; auth=none
• References: <20170728034305.13389-1-ricaljasan@pacific.net> <98c619b4-7058-d281-1020-8455a806307d@pacific.net>

OK, but suggested followups:* In the description of _DEFAULT_SOURCE, note that features from the C standard version used by the compiler are also enabled by default.  (With GCC 5 and later, which defaults to -std=gnu11, that means C11 features are enabled, but unlike C99 they aren't part of the 2008 edition of POSIX, so aren't already included in the description of default features.)* Remove the statement about C99 not being widely adopted from the description of _ISOC99_SOURCE.  By now, C99 is widely adopted (in the Unix world; I'm not sure about the state of Microsoft's compiler in that regard, they've historically been better at keeping up with C++ than with C).* Consider obsoleting _ATFILE_SOURCE and making it into an alias for _POSIX_C_SOURCE = 200809L if _POSIX_C_SOURCE is undefined or has a lower value (similar to the _REENTRANT obsoletion); I don't think we really need a separate feature test macro for this subset of POSIX features.-- Joseph S. Myersjoseph@codesourcery.com

• Follow-Ups:
  • Re: [PING] [PATCH v2] manual: Document missing feature test macros.
    • From: Rical Jasan

• References:
  • [PING] [PATCH v2] manual: Document missing feature test macros.
    • From: Rical Jasan