From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#23640: 25.1.50; Getting rid of compiler warnings Date: Sat, 28 May 2016 21:57:29 +0300 Message-ID: <83mvnaxb6u.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1464461906 15978 80.91.229.3 (28 May 2016 18:58:26 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 28 May 2016 18:58:26 +0000 (UTC) Cc: 23640@debbugs.gnu.org To: Ken Brown Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat May 28 20:58:16 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 1b6jR8-0002TF-D0 for geb-bug-gnu-emacs@m.gmane.org; Sat, 28 May 2016 20:58:14 +0200 Original-Received: from localhost ([::1]:53964 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6jR7-0006ro-Am for geb-bug-gnu-emacs@m.gmane.org; Sat, 28 May 2016 14:58:13 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:57252) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6jR0-0006pC-As for bug-gnu-emacs@gnu.org; Sat, 28 May 2016 14:58:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b6jQw-00010a-Nx for bug-gnu-emacs@gnu.org; Sat, 28 May 2016 14:58:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:60945) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6jQw-00010W-KM for bug-gnu-emacs@gnu.org; Sat, 28 May 2016 14:58:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1b6jQw-0002Ag-C3 for bug-gnu-emacs@gnu.org; Sat, 28 May 2016 14:58:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 28 May 2016 18:58:02 +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=B23640.14644618588313 (code B ref 23640); Sat, 28 May 2016 18:58:02 +0000 Original-Received: (at 23640) by debbugs.gnu.org; 28 May 2016 18:57:38 +0000 Original-Received: from localhost ([127.0.0.1]:45049 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b6jQY-0002A1-2r for submit@debbugs.gnu.org; Sat, 28 May 2016 14:57:38 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:37946) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1b6jQW-00029o-Mt for 23640@debbugs.gnu.org; Sat, 28 May 2016 14:57:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b6jQO-0000pS-UR for 23640@debbugs.gnu.org; Sat, 28 May 2016 14:57:31 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:41680) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b6jQO-0000pH-Rc; Sat, 28 May 2016 14:57:28 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:2597 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.82) (envelope-from ) id 1b6jQM-0006iR-JT; Sat, 28 May 2016 14:57:27 -0400 In-reply-to: (message from Ken Brown on Sat, 28 May 2016 14:40:36 -0400) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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:118816 Archived-At: > From: Ken Brown > Date: Sat, 28 May 2016 14:40:36 -0400 > > Building master on Cygwin with gcc-5.3.0 yields many "control reaches > end of non-void function" warnings. What's the best way to get rid of > these? Should I add return statements that will never be reached, like > this? > > --- a/src/frame.c > +++ b/src/frame.c > @@ -263,6 +263,8 @@ See also `frame-live-p'. */) > return Qns; > default: > emacs_abort (); > + /* Pacify compiler. */ > + return Qnil; > } > } emacs_abort is declared with _Noreturn, so how come GCC doesn't shut up about "unreachable" code? FWIW, I'm building master with GCC 5.3.0, and don't see these warnings.