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 7EB073858421 for ; Mon, 14 Nov 2022 11:43:36 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 7EB073858421 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=1668426216; 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; bh=yIGwUJDzYvCIW+XVUCv/wSEzZ73GM5O9MG5VOktg82E=; b=Z8H+sdkj0SQQSMw6cSlasM3XioUgGCaWm/kFDUm47UZzEUEJDBO0fl+CwU8r+H/L7jsXjP ayGo/bUlS9ljyO7JsdRxzbliWeup5P5wlUZktfJ4QN+JhPpDMWo7KIX0WyYgnm5kjf3TpV SlJY+ILpKLEpptbtpyoJKKONXn3tqH8= 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-330-RMvuF71BOsemU8vQRcfaQw-1; Mon, 14 Nov 2022 06:43:35 -0500 X-MC-Unique: RMvuF71BOsemU8vQRcfaQw-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 B9C453815D30 for ; Mon, 14 Nov 2022 11:43:34 +0000 (UTC) Received: from tucnak.zalov.cz (unknown [10.39.192.38]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5B30239D6A; Mon, 14 Nov 2022 11:43:34 +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 2AEBhTld2841938 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 14 Nov 2022 12:43:29 +0100 Received: (from jakub@localhost) by tucnak.zalov.cz (8.17.1/8.17.1/Submit) id 2AEBhSse2841937; Sun, 13 Nov 2022 23:43:28 -1200 Date: Sun, 13 Nov 2022 23:43:28 -1200 From: Jakub Jelinek To: Jason Merrill Cc: gcc-patches@gcc.gnu.org Subject: [PATCH] c++: Add testcase for DR 2604 Message-ID: Reply-To: Jakub Jelinek MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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=-3.6 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,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,TXREP 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: Hi! Working virtually out of Baker Island. As the following testcase shows, I think we don't inherit template's attributes into specializations. Tested on x86_64-linux, ok for trunk? 2022-11-13 Jakub Jelinek * g++.dg/DRs/dr2604.C: New test. --- gcc/testsuite/g++.dg/DRs/dr2604.C.jj 2022-11-13 23:39:45.725712300 -1200 +++ gcc/testsuite/g++.dg/DRs/dr2604.C 2022-11-13 23:39:38.712807673 -1200 @@ -0,0 +1,53 @@ +// DR 2604 - Attributes for an explicit specialization. +// { dg-do compile { target c++11 } } +// { dg-options "-Wunused-parameter" } + +template +[[noreturn]] void +foo ([[maybe_unused]] int i) +{ + for (;;); +} + +template<> +void +foo (int i) // { dg-warning "unused parameter 'i'" } +{ +} + +template +void +bar (int i) // { dg-warning "unused parameter 'i'" } +{ +} + +template<> +[[noreturn]] void +bar ([[maybe_unused]] int i) +{ + for (;;); +} + +[[noreturn]] void +baz () +{ + foo (0); +} + +[[noreturn]] void +qux () +{ + foo (0); +} // { dg-warning "'noreturn' function does return" } + +[[noreturn]] void +garply () +{ + bar (0); +} // { dg-warning "'noreturn' function does return" } + +[[noreturn]] void +corge () +{ + bar (0); +} Jakub