From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Ken Brown Newsgroups: gmane.emacs.bugs Subject: bug#23640: 25.1.50; Getting rid of compiler warnings Date: Sun, 29 May 2016 18:43:48 -0400 Message-ID: References: <83mvnaxb6u.fsf@gnu.org> <13ba9f48-d461-5e4d-7017-20b3aec2b98c@cornell.edu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1464561864 464 80.91.229.3 (29 May 2016 22:44:24 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 29 May 2016 22:44:24 +0000 (UTC) Cc: 23640@debbugs.gnu.org, Andy Moreton To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Mon May 30 00:44:13 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1b79RL-000226-W9 for geb-bug-gnu-emacs@m.gmane.org; Mon, 30 May 2016 00:44:12 +0200 Original-Received: from localhost ([::1]:57126 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b79RL-0001xo-3h for geb-bug-gnu-emacs@m.gmane.org; Sun, 29 May 2016 18:44:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:60062) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b79RF-0001wj-BO for bug-gnu-emacs@gnu.org; Sun, 29 May 2016 18:44:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b79RC-00020M-5y for bug-gnu-emacs@gnu.org; Sun, 29 May 2016 18:44:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:34354) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b79RC-00020I-2G for bug-gnu-emacs@gnu.org; Sun, 29 May 2016 18:44:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1b79RB-0006OM-OM for bug-gnu-emacs@gnu.org; Sun, 29 May 2016 18:44:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Ken Brown Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 29 May 2016 22:44:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 23640 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 23640-submit@debbugs.gnu.org id=B23640.146456184024554 (code B ref 23640); Sun, 29 May 2016 22:44:01 +0000 Original-Received: (at 23640) by debbugs.gnu.org; 29 May 2016 22:44:00 +0000 Original-Received: from localhost ([127.0.0.1]:46691 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b79R9-0006Ny-Tn for submit@debbugs.gnu.org; Sun, 29 May 2016 18:44:00 -0400 Original-Received: from limerock03.mail.cornell.edu ([128.84.13.243]:60711) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b79R8-0006Nk-Ay for 23640@debbugs.gnu.org; Sun, 29 May 2016 18:43:58 -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 limerock03.mail.cornell.edu (8.14.4/8.14.4_cu) with ESMTP id u4TMhq2N002067; Sun, 29 May 2016 18:43:52 -0400 Original-Received: from [192.168.1.3] (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 u4TMhoCe022778 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Sun, 29 May 2016 18:43:51 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.1.0 In-Reply-To: <13ba9f48-d461-5e4d-7017-20b3aec2b98c@cornell.edu> X-PMX-Cornell-Gauge: Gauge=XXXXX X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:118842 Archived-At: On 5/28/2016 5:47 PM, Ken Brown wrote: > On 5/28/2016 2:57 PM, Eli Zaretskii wrote: >> emacs_abort is declared with _Noreturn, so how come GCC doesn't shut >> up about "unreachable" code? > > It looks like the problem is the definition of _Noreturn as a macro in > config.h. I'll have to figure out what's going on. That guess was wrong. The problem turns out to be that lint is defined in config.h. When lint is defined, Cygwin's defines _Noreturn to be a macro with empty expansion. I've raised the question on the Cygwin list (https://www.cygwin.com/ml/cygwin/2016-05/msg00374.html) as to whether that's a bug. Ken