From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Ruijie Yu via "Bug reports for GNU Emacs, the Swiss army knife of text editors" Newsgroups: gmane.emacs.bugs Subject: bug#61730: 30.0.50; Compiler warnings for delq and delete Date: Sun, 21 May 2023 11:01:43 +0800 Message-ID: References: <87ednbdatj.fsf@web.de> <12EE2A5E-A357-4186-9B81-27A65DE9A3DF@gmail.com> <874jo6cxim.fsf@web.de> Reply-To: Ruijie Yu Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4381"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.11.3; emacs 30.0.50 Cc: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= , 61730@debbugs.gnu.org, Stefan Monnier To: Michael Heerdegen Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sun May 21 05:03:50 2023 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1q0ZML-0000rj-RA for geb-bug-gnu-emacs@m.gmane-mx.org; Sun, 21 May 2023 05:03:49 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1q0ZLc-0002nW-1T; Sat, 20 May 2023 23:03:04 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1q0ZLa-0002n3-NG for bug-gnu-emacs@gnu.org; Sat, 20 May 2023 23:03:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1q0ZLa-00085g-Eo for bug-gnu-emacs@gnu.org; Sat, 20 May 2023 23:03:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1q0ZLa-00018L-9b for bug-gnu-emacs@gnu.org; Sat, 20 May 2023 23:03:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Ruijie Yu Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sun, 21 May 2023 03:03:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 61730 X-GNU-PR-Package: emacs Original-Received: via spool by 61730-submit@debbugs.gnu.org id=B61730.16846381254243 (code B ref 61730); Sun, 21 May 2023 03:03:02 +0000 Original-Received: (at 61730) by debbugs.gnu.org; 21 May 2023 03:02:05 +0000 Original-Received: from localhost ([127.0.0.1]:59732 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q0ZKf-00016N-0N for submit@debbugs.gnu.org; Sat, 20 May 2023 23:02:05 -0400 Original-Received: from netyu.xyz ([152.44.41.246]:33404 helo=mail.netyu.xyz) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1q0ZKb-00015m-6Q for 61730@debbugs.gnu.org; Sat, 20 May 2023 23:02:03 -0400 Original-Received: from fw.net.yu.netyu.xyz ( [222.248.4.98]) by netyu.xyz (OpenSMTPD) with ESMTPSA id b06268b7 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Sun, 21 May 2023 03:01:59 +0000 (UTC) In-reply-to: <874jo6cxim.fsf@web.de> X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:262076 Archived-At: Michael Heerdegen writes: > I have some doubt about the new property's name > "important-return-value". It's not bad but it also doesn't really tell > what the warnings are about. My English is not good enough to come up > with something better though ... "enforce-retval-passing"...hmm, > probably not. Maybe we can take inspirations from other langagues? In rust we have the `#[must_use]' attribute [1], and in C++17 and C23 we have the `[[nodiscard]]' attribute [2] [3]. Also, is there any definitive relation between this 'important-return-value property and the existing "pure" function declaration? Like the `(declare (pure t))' thing in the front of a defun. [1]: https://doc.rust-lang.org/reference/attributes/diagnostics.html#the-must_use-attribute [2]: https://en.cppreference.com/w/cpp/language/attributes/nodiscard [3]: https://en.cppreference.com/w/c/language/attributes/nodiscard -- Best, RY