From owner-sc22wg5+sc22wg5-dom8=www.open-std.org@open-std.org Mon Mar 19 03:51:46 2012 Return-Path: X-Original-To: sc22wg5-dom8 Delivered-To: sc22wg5-dom8@www.open-std.org Received: by www.open-std.org (Postfix, from userid 521) id CAA32356822; Mon, 19 Mar 2012 03:51:46 +0100 (CET) Delivered-To: sc22wg5@open-std.org Received: from exprod6og103.obsmtp.com (exprod6og103.obsmtp.com [64.18.1.185]) by www.open-std.org (Postfix) with ESMTP id D8ABA356687 for ; Mon, 19 Mar 2012 03:51:45 +0100 (CET) Received: from CFWEX01.americas.cray.com ([136.162.34.11]) (using TLSv1) by exprod6ob103.postini.com ([64.18.5.12]) with SMTP ID DSNKT2afQKcgSzujI4RjjOdpNRhg0dmdGgy9@postini.com; Sun, 18 Mar 2012 19:51:46 PDT Received: from cfasa-vpn-192-168-233-133in.us.cray.com (192.168.233.133) by CFWEX01.americas.cray.com (172.30.88.25) with Microsoft SMTP Server id 14.1.355.2; Sun, 18 Mar 2012 21:51:43 -0500 Message-ID: <4F669F4B.8050406@cray.com> Date: Sun, 18 Mar 2012 21:51:55 -0500 From: Bill Long Reply-To: Organization: Cray Inc. User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:10.0.2) Gecko/20120216 Thunderbird/10.0.2 MIME-Version: 1.0 To: sc22wg5 Subject: Vote on N1904 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-sc22wg5@open-std.org Precedence: bulk From N1908: Please answer the following question "Is N1904 ready for forwarding to SC22 as the DTS?" in one of these ways. 1) Yes. 2) Yes, but I recommend the following changes. 3) No, for the following reasons. 4) Abstain. I vote: 3) No, for the following reasons. There are two technical problems with N1904: - Because INTENT(OUT) causes an argument to become undefined when the routine is called, it coexists poorly with TYPE(*). The combination of TYPE(*) and INTENT(OUT) should be disallowed. - A more obscure, but more serious problem, is that the text of C1255, while improved to allow OPTIONAL arguments, still requires that the variables in a BIND(C) call be interoperable objects. The test in 15.3.5 disallows the very things the TS is intended to allow (allocatable and pointer arguments). The requirement needs to be weakened to interoperable types (not objects) and then additional requirements to account for TYPE(*) arguments and coarray arguments. An email thread on the J3/WG5 lists proposed solutions for this, but the change is significant enough to justify another review (in my opinion). There are also more minor wording and typo fixes that were mentioned by others that should be fixed since a new draft will be required anyway. Cheers, Bill -- Bill Long longb@cray.com Fortran Technical Support & voice: 651-605-9024 Bioinformatics Software Development fax: 651-605-9142 Cray Inc./Cray Plaza, Suite 210/380 Jackson St./St. Paul, MN 55101