From owner-freebsd-current@freebsd.org Tue Nov 17 08:09:18 2015 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 87C2EA31A95 for ; Tue, 17 Nov 2015 08:09:18 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 19F1411EE for ; Tue, 17 Nov 2015 08:09:17 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kostik@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id tAH896CK030442 (version=TLSv1 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Tue, 17 Nov 2015 10:09:06 +0200 (EET) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua tAH896CK030442 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id tAH896FN030433; Tue, 17 Nov 2015 10:09:06 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Tue, 17 Nov 2015 10:09:06 +0200 From: Konstantin Belousov To: Benjamin Kaduk Cc: Warner Losh , Justin Hibbits , FreeBSD Current Subject: Re: CFT: uintmax_t rman Message-ID: <20151117080906.GA58629@kib.kiev.ua> References: <75C2B97F-3C5E-49E3-A584-DE84463889FC@gmail.com> <0F3B8FF2-E54E-446F-8D4E-415A1111EF4D@bsdimp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.1 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on tom.home X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Nov 2015 08:09:18 -0000 On Mon, Nov 16, 2015 at 07:25:54PM -0500, Benjamin Kaduk wrote: > Channeling my inner bde (maybe?), the typedef is probably helpful, but > uintmax_t seems less so. uintmax_t has no guaranteed ABI, so a > fixed-width type like uint64_t seems beter, assuming that uintmax_t is > currently uint64_t everywhere (which I think is the case but did not > verify). The statement about {u}intmax_t not having a guaranteed ABI is wrong, I believe. You cannot change the type after it is exposed. I am sure that ANSI C or POSIX would introduce intthistimerealmax_t after long long long type is added (only half-joking).