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Mon, 22 Jan 2024 16:16:08 -0500 X-MC-Unique: 7-8zueQBMKGR4k0BLblXlw-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 1F8DB3C02B6F for ; Mon, 22 Jan 2024 21:16:08 +0000 (UTC) Received: from pdp-11.lan (unknown [10.22.17.16]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0732E492BC6 for ; Mon, 22 Jan 2024 21:16:08 +0000 (UTC) From: Marek Polacek To: GCC Patches Subject: [pushed] c++: extend Wdangling-reference17.C [PR109642] Date: Mon, 22 Jan 2024 16:16:05 -0500 Message-ID: <20240122211605.25352-1-polacek@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.9 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-12.9 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, 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-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org Tested x86_64-pc-linux-gnu, applying to trunk. -- >8 -- This patch extends g++.dg/warn/Wdangling-reference17.C with code from PR109642. I'm not creating a new test because this one already #includes the required headers. PR c++/109642 gcc/testsuite/ChangeLog: * g++.dg/warn/Wdangling-reference17.C: Additional testing. --- gcc/testsuite/g++.dg/warn/Wdangling-reference17.C | 12 ++++++++++++ 1 file changed, 12 insertions(+) base-commit: bc77c035c45bb224790b1c03d06a64c8a1cc51c5 diff --git a/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C b/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C index 223698422c2..8cda5dea444 100644 --- a/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C +++ b/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C @@ -4,6 +4,7 @@ #include #include +#include int main() { @@ -12,4 +13,15 @@ int main() { (void) i; } + + // From c++/109642. + const auto vec = std::vector{ 1, 2, 3 }; + const auto s = std::span{vec}; + + for ([[maybe_unused]] auto _ : s | std::views::take(2)) { } + + for ([[maybe_unused]] auto _ : vec | std::views::take(2)) { } + + const auto s_view = s | std::views::take(2); + for ([[maybe_unused]] auto _ : s_view) { } }