From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 9BA9B3856DED for ; Wed, 10 May 2023 15:14:33 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 9BA9B3856DED Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1683731673; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:in-reply-to:in-reply-to: references:references; bh=3iS89bdAhIGgj8YAnYzvOBdbNRlOxwdwIGAguqmUCl4=; b=h9Wvulwl35MpamAIdzEq4A/48RlxiPDYt0iGBnb+y2qdm0x7HFMN8EXq0+cm0yZqZ/FeRV XCezZRh3Ta635OeK+SVP6pNyw5rWUQ9XbxqCEIGHM3c825+FehZLCCMbHzjg0yRhPFX0Vg y5m6TeSSH0gskNY6WIRHFqW5tvyNhN4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-7-L8RTMAZBOAmVdZHqH0Z9fg-1; Wed, 10 May 2023 11:14:27 -0400 X-MC-Unique: L8RTMAZBOAmVdZHqH0Z9fg-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 6E37B891768; Wed, 10 May 2023 15:14:25 +0000 (UTC) Received: from tucnak.zalov.cz (unknown [10.39.194.156]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2B06C492C13; Wed, 10 May 2023 15:14:25 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.17.1/8.17.1) with ESMTPS id 34AFELTh3916023 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Wed, 10 May 2023 17:14:22 +0200 Received: (from jakub@localhost) by tucnak.zalov.cz (8.17.1/8.17.1/Submit) id 34AFEKIM3916022; Wed, 10 May 2023 17:14:20 +0200 Date: Wed, 10 May 2023 17:14:20 +0200 From: Jakub Jelinek To: Joel Sherrill Cc: Jonathan Wakely , David Edelsohn , Eli Zaretskii , Arsen =?utf-8?Q?Arsenovi=C4=87?= , "gcc@gcc.gnu.org" Subject: Re: More C type errors by default for GCC 14 Message-ID: Reply-To: Jakub Jelinek References: <83lehx9vix.fsf@gnu.org> <83fs859unu.fsf@gnu.org> MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Spam-Status: No, score=-3.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,KAM_NUMSUBJECT,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Wed, May 10, 2023 at 10:10:37AM -0500, Joel Sherrill wrote: > > > What practices might the GCC community recommend to a project > > > wanting to discover the issues uncovered and slowly address them? I > > > > -Werror=implicit-int > > -Werror=implicit-function-declaration > > -Werror=int-conversion > > > > Thanks. We already use -Wall which is documented to turn on the top two > as warnings at least. > > Is int-conversion turned on as part of any of the more general -W arguments > (e.g. -Wall, -Wextra, -pedantic)? It's not listed in the manual and I was > wondering > if that was right or an oversight. Given this discussion, I would have > expected it > to be in -Wall. -Wint-conversion is enabled by default. You get the warning whenever not using -w or -Wno-int-conversion, and error with -pedantic-errors. Jakub