From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.devel Subject: Re: New warnings on emacs-26 branch with gcc 8.2.0 Date: Sun, 5 Aug 2018 12:56:45 -0700 Organization: UCLA Computer Science Department Message-ID: <6d36dc4c-1e14-b6c8-e2f0-911d08f759e1@cs.ucla.edu> References: <86a7q0ai2z.fsf@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1533498929 7833 195.159.176.226 (5 Aug 2018 19:55:29 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sun, 5 Aug 2018 19:55:29 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 To: Andy Moreton , Emacs Development Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Aug 05 21:55:25 2018 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 1fmP7b-0001wS-Vi for ged-emacs-devel@m.gmane.org; Sun, 05 Aug 2018 21:55:24 +0200 Original-Received: from localhost ([::1]:59696 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fmP9i-000328-O7 for ged-emacs-devel@m.gmane.org; Sun, 05 Aug 2018 15:57:34 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:50996) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fmP95-000323-4q for Emacs-devel@gnu.org; Sun, 05 Aug 2018 15:56:56 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fmP92-0006wl-4A for Emacs-devel@gnu.org; Sun, 05 Aug 2018 15:56:55 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:33834) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fmP91-0006u5-QX for Emacs-devel@gnu.org; Sun, 05 Aug 2018 15:56:52 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 5685316081D; Sun, 5 Aug 2018 12:56:50 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id JsfdyFLe6vnK; Sun, 5 Aug 2018 12:56:49 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 20D63160E47; Sun, 5 Aug 2018 12:56:49 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id Nd12IMGOMTvw; Sun, 5 Aug 2018 12:56:49 -0700 (PDT) Original-Received: from [192.168.1.9] (unknown [47.154.30.119]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id CD33616081D; Sun, 5 Aug 2018 12:56:48 -0700 (PDT) Openpgp: preference=signencrypt Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= xsFNBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABzSBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PsLBfgQTAQIAKAUCTIByZAIbAwUJEswDAAYLCQgHAwIG FQgCCQoLBBYCAwECH In-Reply-To: <86a7q0ai2z.fsf@gmail.com> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 131.179.128.68 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:228197 Archived-At: Andy Moreton wrote: > cc1.exe: warning: -Wabi won't warn about anything [-Wabi] > cc1.exe: note: -Wabi warns about differences from the most up-to-date A= BI, which is also used by default > cc1.exe: note: use e.g. -Wabi=3D11 to warn about changes from GCC 7 I noticed this problem a while ago on Fedora in several GNU projects, and= fixed=20 it for Emacs master in commit 2018-06-30T00:31:04!eggert@cs.ucla.edu. To avoid the problem entirely in the emacs-26 I'd run admin/merge-gnulib = and=20 update everything from Gnulib as it's not worth the trouble to cherry-pic= k these=20 sorts of fixes from master. If we'd rather not do admin/merge-gnulib, the= n we=20 can just suggest './configure --disable-gcc-warnings' and/or 'make=20 WERROR_CFLAGS=3D' to emacs-26 developers; either of these should work aro= und the=20 problem. (Builders from tarballs needn't worry about this, as GCC warning= s are=20 disabled for them by default.) > Can this be simplified to be less over-zealous and less time consuming = ? The overzealous-warning part has been fixed on master. I'm sure 'configur= e'=20 could be sped up, if someone wants to take the time to work on that.