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[193.119.89.230]) by smtp.gmail.com with ESMTPSA id f8-20020a170902684800b001dd4d0082c8sm2436910pln.216.2024.03.28.20.21.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 Mar 2024 20:21:21 -0700 (PDT) Message-ID: <660633b1.170a0220.717f3.817f@mx.google.com> X-Google-Original-Message-ID: Date: Fri, 29 Mar 2024 14:21:17 +1100 From: Nathaniel Shead To: gcc-patches@gcc.gnu.org Cc: Jason Merrill , Nathan Sidwell Subject: [PATCH] c++: Keep DECL_SAVED_TREE of destructor instantiations in modules [PR104040] MIME-Version: 1.0 Content-Disposition: inline X-Spam-Status: No, score=-12.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP 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+patchwork=sourceware.org@gcc.gnu.org Bootstrapped and regtested on x86_64-pc-linux-gnu, OK for trunk? -- >8 -- A template instantiation still needs to have its DECL_SAVED_TREE so that its definition is emitted into the CMI. This way it can be emitted in the object file of any importers that use it, in case it doesn't end up getting emitted in this TU. PR c++/104040 gcc/cp/ChangeLog: * semantics.cc (expand_or_defer_fn_1): Also keep DECL_SAVED_TREE for template instantiations. gcc/testsuite/ChangeLog: * g++.dg/modules/pr104040_a.C: New test. * g++.dg/modules/pr104040_b.C: New test. Signed-off-by: Nathaniel Shead Signed-off-by: Nathaniel Shead Reviewed-by: Jason Merrill Signed-off-by: Nathaniel Shead Reviewed-by: Jason Merrill --- gcc/cp/semantics.cc | 7 +++++-- gcc/testsuite/g++.dg/modules/pr104040_a.C | 14 ++++++++++++++ gcc/testsuite/g++.dg/modules/pr104040_b.C | 8 ++++++++ 3 files changed, 27 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/g++.dg/modules/pr104040_a.C create mode 100644 gcc/testsuite/g++.dg/modules/pr104040_b.C diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc index adb1ba48d29..84e9901509a 100644 --- a/gcc/cp/semantics.cc +++ b/gcc/cp/semantics.cc @@ -5033,9 +5033,12 @@ expand_or_defer_fn_1 (tree fn) /* We don't want to process FN again, so pretend we've written it out, even though we haven't. */ TREE_ASM_WRITTEN (fn) = 1; - /* If this is a constexpr function, keep DECL_SAVED_TREE. */ + /* If this is a constexpr function, or the body might need to be + exported from a module CMI, keep DECL_SAVED_TREE. */ if (!DECL_DECLARED_CONSTEXPR_P (fn) - && !(modules_p () && DECL_DECLARED_INLINE_P (fn))) + && !(modules_p () + && (DECL_DECLARED_INLINE_P (fn) + || DECL_TEMPLATE_INSTANTIATION (fn)))) DECL_SAVED_TREE (fn) = NULL_TREE; return false; } diff --git a/gcc/testsuite/g++.dg/modules/pr104040_a.C b/gcc/testsuite/g++.dg/modules/pr104040_a.C new file mode 100644 index 00000000000..ea36ce0a798 --- /dev/null +++ b/gcc/testsuite/g++.dg/modules/pr104040_a.C @@ -0,0 +1,14 @@ +// PR c++/104040 +// { dg-additional-options "-fmodules-ts" } +// { dg-module-cmi test } + +export module test; + +export template +struct test { + ~test() {} +}; + +test use() { + return {}; +} diff --git a/gcc/testsuite/g++.dg/modules/pr104040_b.C b/gcc/testsuite/g++.dg/modules/pr104040_b.C new file mode 100644 index 00000000000..efe014673fb --- /dev/null +++ b/gcc/testsuite/g++.dg/modules/pr104040_b.C @@ -0,0 +1,8 @@ +// PR c++/104040 +// { dg-additional-options "-fmodules-ts" } + +import test; + +int main() { + test t{}; +}