From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Ken Brown Newsgroups: gmane.emacs.devel Subject: Re: Too many warnings building Emacs with GCC 6 on MSYS2-MinGW64 Date: Thu, 1 Sep 2016 12:24:13 -0400 Message-ID: References: <50083875-fbf6-d6b2-ffac-08c17c2bc696@alice.it> <83r395ko7o.fsf@gnu.org> <83h9a1kks6.fsf@gnu.org> <8337lklqrl.fsf@gnu.org> <11ac6b41-3a59-ec19-c414-151c08a91ba3@alice.it> <83oa48fiqn.fsf@gnu.org> <0749368a-c043-ef4b-8722-d5071f17a1e3@alice.it> <83h99zg0w0.fsf@gnu.org> <83a8frfvxe.fsf@gnu.org> <3d9a7a28-d82c-2ad6-f4b0-adfebe6b6544@lanl.gov> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1472747088 30272 195.159.176.226 (1 Sep 2016 16:24:48 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 1 Sep 2016 16:24:48 +0000 (UTC) User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 Cc: emacs-devel@gnu.org, Angelo Graziosi To: Davis Herring , Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Sep 01 18:24:44 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bfUn6-0006e9-W8 for ged-emacs-devel@m.gmane.org; Thu, 01 Sep 2016 18:24:37 +0200 Original-Received: from localhost ([::1]:37984 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bfUn4-0000wH-NQ for ged-emacs-devel@m.gmane.org; Thu, 01 Sep 2016 12:24:34 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:50736) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bfUmv-0000pe-JH for emacs-devel@gnu.org; Thu, 01 Sep 2016 12:24:29 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bfUmr-0003HW-PQ for emacs-devel@gnu.org; Thu, 01 Sep 2016 12:24:25 -0400 Original-Received: from limerock02.mail.cornell.edu ([128.84.13.242]:56414) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bfUmr-0003H8-Je; Thu, 01 Sep 2016 12:24:21 -0400 X-CornellRouted: This message has been Routed already. Original-Received: from authusersmtp.mail.cornell.edu (granite3.serverfarm.cornell.edu [10.16.197.8]) by limerock02.mail.cornell.edu (8.14.4/8.14.4_cu) with ESMTP id u81GOGnn029253; Thu, 1 Sep 2016 12:24:17 -0400 Original-Received: from [192.168.1.5] (mta-68-175-148-36.twcny.rr.com [68.175.148.36] (may be forged)) (authenticated bits=0) by authusersmtp.mail.cornell.edu (8.14.4/8.12.10) with ESMTP id u81GOFTX025204 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Thu, 1 Sep 2016 12:24:15 -0400 In-Reply-To: <3d9a7a28-d82c-2ad6-f4b0-adfebe6b6544@lanl.gov> X-PMX-Cornell-Gauge: Gauge=XXXXX X-PMX-CORNELL-AUTH-RESULTS: dkim-out=none; X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 128.84.13.242 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:207077 Archived-At: On 9/1/2016 12:17 PM, Davis Herring wrote: >> On Unix, execve indeed returns an int, because it's a process ID. On >> Windows, the return value can be a process handle, which is a 64-bit >> data type on 64-bit Windows. That is why the return value must be >> intptr_t, not an int. > > No, it's an error code. (You said as much for POSIX in your following > message, but it's an error code on all systems.) If it succeeds, the > process image has been replaced and it doesn't return at all. The return value is not an error code. If the function returns, it returns -1 and sets errno: http://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html https://msdn.microsoft.com/en-us/library/hyw61wtd.aspx Ken