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 [216.205.24.124]) by sourceware.org (Postfix) with ESMTP id 1688C3858002 for ; Wed, 28 Oct 2020 08:21:51 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 1688C3858002 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-321-I3467_6OMe6WZkQ4d0lIdg-1; Wed, 28 Oct 2020 04:21:48 -0400 X-MC-Unique: I3467_6OMe6WZkQ4d0lIdg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 9952D107466F; Wed, 28 Oct 2020 08:21:47 +0000 (UTC) Received: from oldenburg2.str.redhat.com (ovpn-113-60.ams2.redhat.com [10.36.113.60]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E44826266E; Wed, 28 Oct 2020 08:21:46 +0000 (UTC) From: Florian Weimer To: Tadeus Prastowo via Libc-help Subject: Re: raise() marked __leaf__ is not C-compliant? References: Date: Wed, 28 Oct 2020 09:21:45 +0100 In-Reply-To: (Tadeus Prastowo via Libc-help's message of "Tue, 27 Oct 2020 17:57:47 +0100") Message-ID: <87v9eu3gme.fsf@oldenburg2.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.3 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_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-help@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-help mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 Oct 2020 08:21:52 -0000 * Tadeus Prastowo via Libc-help: > With glibc-2.30 raise() being marked __leaf__, the attached C program > has an undefined behavior because it terminates when compiled with GCC > using either -O0 or -Os but enters an infinite loop when using -O2. Yes, I think the leaf attribute is incorrect for raise and similar functions. throw()/noexcept is questionable as well because the GNU implementation supports throwing from a synchronous signal handler, as an extension. I can't find a Bugzilla bug for this right now, but I think we discussed it before. Thanks, Florian -- Red Hat GmbH, https://de.redhat.com/ , Registered seat: Grasbrunn, Commercial register: Amtsgericht Muenchen, HRB 153243, Managing Directors: Charles Cachera, Brian Klemm, Laurie Krebs, Michael O'Neill