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[69.118.112.187]) by smtp.gmail.com with ESMTPSA id f5-20020ac86ec5000000b0041ea59e639bsm6007629qtv.70.2023.12.14.11.17.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Dec 2023 11:17:27 -0800 (PST) From: Patrick Palka To: gcc-patches@gcc.gnu.org Cc: jason@redhat.com, Patrick Palka Subject: [PATCH] c++: section attribute on templates [PR70435, PR88061] Date: Thu, 14 Dec 2023 14:17:25 -0500 Message-ID: <20231214191725.1941372-1-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=-13.6 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+ouuuleilei=gmail.com@gcc.gnu.org X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1785286073877798019 X-GMAIL-MSGID: 1785286073877798019 Bootstrapped and regtested on x86_64-pc-linux-gnu, does this look OK for trunk? -- >8 -- The section attribute currently has no effect on templates because the call to set_decl_section_name only happens at parse time and not also at instantiation time. This patch fixes this by propagating the section name from the template to the instantiation. PR c++/70435 PR c++/88061 gcc/cp/ChangeLog: * pt.cc (tsubst_function_decl): Call set_decl_section_name. (tsubst_decl) : Likewise. gcc/testsuite/ChangeLog: * g++.dg/ext/attr-section1.C: New test. * g++.dg/ext/attr-section1a.C: New test. * g++.dg/ext/attr-section2.C: New test. * g++.dg/ext/attr-section2a.C: New test. --- gcc/cp/pt.cc | 4 ++++ gcc/testsuite/g++.dg/ext/attr-section1.C | 9 +++++++++ gcc/testsuite/g++.dg/ext/attr-section1a.C | 11 +++++++++++ gcc/testsuite/g++.dg/ext/attr-section2.C | 9 +++++++++ gcc/testsuite/g++.dg/ext/attr-section2a.C | 14 ++++++++++++++ 5 files changed, 47 insertions(+) create mode 100644 gcc/testsuite/g++.dg/ext/attr-section1.C create mode 100644 gcc/testsuite/g++.dg/ext/attr-section1a.C create mode 100644 gcc/testsuite/g++.dg/ext/attr-section2.C create mode 100644 gcc/testsuite/g++.dg/ext/attr-section2a.C diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc index 50e6f062c85..8c4174fb902 100644 --- a/gcc/cp/pt.cc +++ b/gcc/cp/pt.cc @@ -14607,6 +14607,8 @@ tsubst_function_decl (tree t, tree args, tsubst_flags_t complain, = remove_attribute ("visibility", DECL_ATTRIBUTES (r)); } determine_visibility (r); + if (DECL_SECTION_NAME (t)) + set_decl_section_name (r, t); if (DECL_DEFAULTED_OUTSIDE_CLASS_P (r) && !processing_template_decl) defaulted_late_check (r); @@ -15423,6 +15425,8 @@ tsubst_decl (tree t, tree args, tsubst_flags_t complain, = remove_attribute ("visibility", DECL_ATTRIBUTES (r)); } determine_visibility (r); + if (!local_p && DECL_SECTION_NAME (t)) + set_decl_section_name (r, t); } if (!local_p) diff --git a/gcc/testsuite/g++.dg/ext/attr-section1.C b/gcc/testsuite/g++.dg/ext/attr-section1.C new file mode 100644 index 00000000000..b8ac65baa93 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/attr-section1.C @@ -0,0 +1,9 @@ +// PR c++/70435 +// { dg-do compile { target { c++11 && named_sections } } } + +template +[[gnu::section(".foo")]] void fun() { } + +template void fun(); + +// { dg-final { scan-assembler {.section[ \t]+.foo} } } diff --git a/gcc/testsuite/g++.dg/ext/attr-section1a.C b/gcc/testsuite/g++.dg/ext/attr-section1a.C new file mode 100644 index 00000000000..be24be2fc95 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/attr-section1a.C @@ -0,0 +1,11 @@ +// PR c++/70435 +// { dg-do compile { target { c++11 && named_sections } } } + +template +struct A { + [[gnu::section(".foo")]] void fun() { } +}; + +template struct A; + +// { dg-final { scan-assembler {.section[ \t]+.foo} } } diff --git a/gcc/testsuite/g++.dg/ext/attr-section2.C b/gcc/testsuite/g++.dg/ext/attr-section2.C new file mode 100644 index 00000000000..a76f43b346f --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/attr-section2.C @@ -0,0 +1,9 @@ +// PR c++/88061 +// { dg-do compile { target { c++14 && named_sections } } } + +template +[[gnu::section(".foo")]] int var = 42; + +template int var; + +// { dg-final { scan-assembler {.section[ \t]+.foo} } } diff --git a/gcc/testsuite/g++.dg/ext/attr-section2a.C b/gcc/testsuite/g++.dg/ext/attr-section2a.C new file mode 100644 index 00000000000..a0b01cd8d93 --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/attr-section2a.C @@ -0,0 +1,14 @@ +// PR c++/88061 +// { dg-do compile { target { c++11 && named_sections } } } + +template +struct A { + [[gnu::section(".foo")]] static int var; +}; + +template +int A::var = 42; + +template struct A; + +// { dg-final { scan-assembler {.section[ \t]+.foo} } }