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[69.118.112.187]) by smtp.gmail.com with ESMTPSA id t10-20020a05620a034a00b00787e11574c5sm136816qkm.125.2024.02.26.12.52.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Feb 2024 12:52:25 -0800 (PST) From: Patrick Palka To: gcc-patches@gcc.gnu.org Cc: jason@redhat.com, nathan@acm.org, Patrick Palka Subject: [PATCH] c++/modules: befriending template from current class scope Date: Mon, 26 Feb 2024 15:52:23 -0500 Message-ID: <20240226205223.2403105-1-ppalka@redhat.com> X-Mailer: git-send-email 2.44.0.rc1.15.g4fc51f00ef MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-12.1 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_H2, RCVD_IN_SORBS_WEB, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE, URIBL_BLACK 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: 1791996242529288148 X-GMAIL-MSGID: 1791996242529288148 Bootstrapped and regtested on x86_64-pc-linux-gnu, does this look OK for trunk? -- >8 -- Here the TEMPLATE_DECL representing the template friend declaration for B has class scope since B has class scope, but get_merge_kind assumes all DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P TEMPLATE_DECL have namespace scope and wrongly returns MK_named instead of MK_local_friend. gcc/cp/ChangeLog: * module.cc (trees_out::get_merge_kind) : Accomodate class-scope DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P TEMPLATE_DECL. Merge IDENTIFIER_ANON_P branches. gcc/testsuite/ChangeLog: * g++.dg/modules/friend-7.h: New test. * g++.dg/modules/friend-7_a.H: New test. * g++.dg/modules/friend-7_b.C: New test. --- gcc/cp/module.cc | 19 +++++++++---------- gcc/testsuite/g++.dg/modules/friend-7.h | 5 +++++ gcc/testsuite/g++.dg/modules/friend-7_a.H | 3 +++ gcc/testsuite/g++.dg/modules/friend-7_b.C | 5 +++++ 4 files changed, 22 insertions(+), 10 deletions(-) create mode 100644 gcc/testsuite/g++.dg/modules/friend-7.h create mode 100644 gcc/testsuite/g++.dg/modules/friend-7_a.H create mode 100644 gcc/testsuite/g++.dg/modules/friend-7_b.C diff --git a/gcc/cp/module.cc b/gcc/cp/module.cc index 106af7bdb3e..fa91c6ff9cb 100644 --- a/gcc/cp/module.cc +++ b/gcc/cp/module.cc @@ -10491,21 +10491,20 @@ trees_out::get_merge_kind (tree decl, depset *dep) break; } - if (RECORD_OR_UNION_TYPE_P (ctx)) + if (TREE_CODE (decl) == TEMPLATE_DECL + && DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P (decl)) { - if (IDENTIFIER_ANON_P (DECL_NAME (decl))) - mk = MK_field; + mk = MK_local_friend; break; } - if (TREE_CODE (decl) == TEMPLATE_DECL - && DECL_UNINSTANTIATED_TEMPLATE_FRIEND_P (decl)) - mk = MK_local_friend; - else if (IDENTIFIER_ANON_P (DECL_NAME (decl))) + if (IDENTIFIER_ANON_P (DECL_NAME (decl))) { - if (DECL_IMPLICIT_TYPEDEF_P (decl) - && UNSCOPED_ENUM_P (TREE_TYPE (decl)) - && TYPE_VALUES (TREE_TYPE (decl))) + if (RECORD_OR_UNION_TYPE_P (ctx)) + mk = MK_field; + else if (DECL_IMPLICIT_TYPEDEF_P (decl) + && UNSCOPED_ENUM_P (TREE_TYPE (decl)) + && TYPE_VALUES (TREE_TYPE (decl))) /* Keyed by first enum value, and underlying type. */ mk = MK_enum; else diff --git a/gcc/testsuite/g++.dg/modules/friend-7.h b/gcc/testsuite/g++.dg/modules/friend-7.h new file mode 100644 index 00000000000..c0f00394f3b --- /dev/null +++ b/gcc/testsuite/g++.dg/modules/friend-7.h @@ -0,0 +1,5 @@ +template +struct A { + template struct B { }; + template friend struct B; +}; diff --git a/gcc/testsuite/g++.dg/modules/friend-7_a.H b/gcc/testsuite/g++.dg/modules/friend-7_a.H new file mode 100644 index 00000000000..e750e4c7d8d --- /dev/null +++ b/gcc/testsuite/g++.dg/modules/friend-7_a.H @@ -0,0 +1,3 @@ +// { dg-additional-options "-fmodule-header" } +// { dg-module-cmi {} } +#include "friend-7.h" diff --git a/gcc/testsuite/g++.dg/modules/friend-7_b.C b/gcc/testsuite/g++.dg/modules/friend-7_b.C new file mode 100644 index 00000000000..d90b685d89d --- /dev/null +++ b/gcc/testsuite/g++.dg/modules/friend-7_b.C @@ -0,0 +1,5 @@ +// { dg-additional-options "-fmodules-ts" } +#include "friend-7.h" +import "friend-7_a.H"; + +A a;