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 [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 4A5D23858C54 for ; Tue, 10 Oct 2023 17:07:21 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 4A5D23858C54 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=1696957640; h=from:from: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=opb5J9Hy4Avg5hkakJzQ6/Xifdukea7UbmeJsqxKEBQ=; b=BZ9B5PnU4yCispXEi0FQZEJvD5liHXF+9u+ACSYNDoTalhOcZQGrCb8BZimwSdEAMBkYjm mDyh7ymRWmTF0brY58USDl8bgN2aOs+g/opeZUHHmHxdyDsDiqTPUteSmTlOzNwrN8K3Jk MwjeiuRQmtbz9iKte0pcK5rm5326g4k= 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-634-iwmmHQ_2MSWkd7PsSwjCjw-1; Tue, 10 Oct 2023 13:07:18 -0400 X-MC-Unique: iwmmHQ_2MSWkd7PsSwjCjw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9FDD01869B77; Tue, 10 Oct 2023 17:07:18 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.2.16.56]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 23E5521CAC6B; Tue, 10 Oct 2023 17:07:18 +0000 (UTC) From: Florian Weimer To: Joseph Myers Cc: Subject: Re: C89 question: Do we need to accept -Wint-conversion warnings References: <87h6myaf6b.fsf@oldenburg.str.redhat.com> <0972a6b-38e0-93a0-594d-3a6f5d728242@codesourcery.com> Date: Tue, 10 Oct 2023 19:07:16 +0200 In-Reply-To: <0972a6b-38e0-93a0-594d-3a6f5d728242@codesourcery.com> (Joseph Myers's message of "Tue, 10 Oct 2023 16:38:53 +0000") Message-ID: <87ttqy8kzf.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.6 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: * Joseph Myers: > On Tue, 10 Oct 2023, Florian Weimer via Gcc wrote: > >> Are these code fragments valid C89 code? >> >> int i1 = 1; >> char *p1 = i; >> >> char c; >> char *p2 = &c; >> int i2 = p2; > > Implicit conversions between pointers and integers are not valid C89. > > ANSI C89, as adopted as FIPS PUB 160, is available from NIST: > https://nvlpubs.nist.gov/nistpubs/Legacy/FIPS/fipspub160.pdf Thank you, this is helpful information. Florian