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 AF59B3858D3C for ; Mon, 22 Aug 2022 08:41:08 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org AF59B3858D3C Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-125-OWBXL7VuO-KHaYqUPjo92w-1; Mon, 22 Aug 2022 04:41:05 -0400 X-MC-Unique: OWBXL7VuO-KHaYqUPjo92w-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8DA68382F1A9 for ; Mon, 22 Aug 2022 08:41:05 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.199]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B5EBA945D0; Mon, 22 Aug 2022 08:41:04 +0000 (UTC) From: Florian Weimer To: Reid Wahl via Gcc-help Subject: Re: -fno-builtin not preventing __builtin___snprintf_chk in gcc 11.2.0-19ubuntu1 References: Date: Mon, 22 Aug 2022 10:41:03 +0200 In-Reply-To: (Reid Wahl via Gcc-help's message of "Sun, 21 Aug 2022 19:39:40 -0700") Message-ID: <87o7wc4qn4.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-5.3 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, KAM_NUMSUBJECT, RCVD_IN_DNSWL_LOW, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-help@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-help mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Aug 2022 08:41:10 -0000 * Reid Wahl via Gcc-help: > I have no idea what's causing the unit test to fail on Fedora 36 Power > 9 LE (the only system in the test bed that's still failing), but I > don't have a reproducer or enough information to ask a question. I'll > try to get one set up this week and go from there. The POWER failure could be related to the float128 redirects. The snprintf symbol is necessarily different there as well (__snprintfieee128). This is completely unrelated to fortification. I must say I do not find it particularly helpful to label this as off-topic on the gcc-help list. Source foritification is a feature that sits between GCC and glibc. GCC is very much aware of what the chk variants do. Thanks, Florian