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[69.118.112.187]) by smtp.gmail.com with ESMTPSA id ff14-20020a0562140bce00b0067a2c201c95sm1744585qvb.51.2023.12.18.11.50.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Dec 2023 11:50:06 -0800 (PST) From: Patrick Palka To: gcc-patches@gcc.gnu.org Cc: jason@redhat.com, Patrick Palka Subject: [PATCH] c++: [[deprecated]] on template redecl [PR84542] Date: Mon, 18 Dec 2023 14:50:04 -0500 Message-ID: <20231218195004.1238589-1-ppalka@redhat.com> X-Mailer: git-send-email 2.43.0.76.g1a87c842ec MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-13.7 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_H4, 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+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785650522842381654 X-GMAIL-MSGID: 1785650522842381654 Bootstrapped and regtested on x86_64-pc-linux-gnu, does this look OK for trunk? -- >8 -- The deprecated and unavailable attributes weren't working when used on a template redeclaration ultimately because the corresponding tree flags on the underlying decls weren't being merged across redeclarations. PR c++/84542 gcc/cp/ChangeLog: * decl.cc (merge_attribute_bits): gcc/testsuite/ChangeLog: * g++.dg/ext/attr-deprecated-2.C: No longer XFAIL. * g++.dg/ext/attr-unavailable-12.C: New test. --- gcc/cp/decl.cc | 5 ++++- gcc/testsuite/g++.dg/ext/attr-deprecated-2.C | 4 ++-- gcc/testsuite/g++.dg/ext/attr-unavailable-12.C | 12 ++++++++++++ 3 files changed, 18 insertions(+), 3 deletions(-) create mode 100644 gcc/testsuite/g++.dg/ext/attr-unavailable-12.C diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc index 1ffe4c82748..36375ea3c14 100644 --- a/gcc/cp/decl.cc +++ b/gcc/cp/decl.cc @@ -1530,6 +1530,10 @@ merge_attribute_bits (tree newdecl, tree olddecl) DECL_PURE_P (olddecl) |= DECL_PURE_P (newdecl); DECL_UNINLINABLE (newdecl) |= DECL_UNINLINABLE (olddecl); DECL_UNINLINABLE (olddecl) |= DECL_UNINLINABLE (newdecl); + TREE_DEPRECATED (newdecl) |= TREE_DEPRECATED (olddecl); + TREE_DEPRECATED (olddecl) |= TREE_DEPRECATED (newdecl); + TREE_UNAVAILABLE (newdecl) |= TREE_UNAVAILABLE (olddecl); + TREE_UNAVAILABLE (olddecl) |= TREE_UNAVAILABLE (newdecl); } #define GNU_INLINE_P(fn) (DECL_DECLARED_INLINE_P (fn) \ @@ -1542,7 +1546,6 @@ merge_attribute_bits (tree newdecl, tree olddecl) static bool duplicate_function_template_decls (tree newdecl, tree olddecl) { - tree newres = DECL_TEMPLATE_RESULT (newdecl); tree oldres = DECL_TEMPLATE_RESULT (olddecl); /* Function template declarations can be differentiated by parameter diff --git a/gcc/testsuite/g++.dg/ext/attr-deprecated-2.C b/gcc/testsuite/g++.dg/ext/attr-deprecated-2.C index bf9041506d1..6f6c210ddb5 100644 --- a/gcc/testsuite/g++.dg/ext/attr-deprecated-2.C +++ b/gcc/testsuite/g++.dg/ext/attr-deprecated-2.C @@ -23,8 +23,8 @@ fdeprecated_primary (); void use_primary () { // Verify that uses of the now deprecacted primary are diagnosed. - fdeprecated_primary(); // { dg-warning "deprecated" "bug 84542" { xfail *-*-* } } - fdeprecated_primary(); // { dg-warning "deprecated" "bug 84542" { xfail *-*-* } } + fdeprecated_primary(); // { dg-warning "deprecated" "bug 84542" } + fdeprecated_primary(); // { dg-warning "deprecated" "bug 84542" } } void use_special () diff --git a/gcc/testsuite/g++.dg/ext/attr-unavailable-12.C b/gcc/testsuite/g++.dg/ext/attr-unavailable-12.C new file mode 100644 index 00000000000..7174abc8bb9 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/attr-unavailable-12.C @@ -0,0 +1,12 @@ +// PR c++/84542 + +template +void f(T); + +template +__attribute__((unavailable)) +void f(T) { } + +int main() { + f(0); // { dg-error "unavailable" } +}