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[130.44.159.43]) by smtp.gmail.com with ESMTPSA id 18-20020a370312000000b00745b3e62006sm4664421qkd.23.2023.03.15.15.29.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Mar 2023 15:29:25 -0700 (PDT) To: gcc-patches@gcc.gnu.org Cc: Iain Sandoe Subject: [pushed] c++: co_await and initializer_list [PR103871] Date: Wed, 15 Mar 2023 18:29:23 -0400 Message-Id: <20230315222923.846553-1-jason@redhat.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-12.6 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_H2, SPF_HELO_NONE, SPF_NONE, 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: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Jason Merrill via Gcc-patches From: Jason Merrill Reply-To: Jason Merrill Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760474616061961744?= X-GMAIL-MSGID: =?utf-8?q?1760474616061961744?= Tested x86_64-pc-linux-gnu, applying to trunk. -- 8< -- When flatten_await_stmt processes the backing array for an initializer_list, we call cp_build_modify_expr to initialize the promoted variable from the TARGET_EXPR; that needs to be accepted. PR c++/103871 PR c++/98056 gcc/cp/ChangeLog: * typeck.cc (cp_build_modify_expr): Allow array initialization of DECL_ARTIFICIAL variable. gcc/testsuite/ChangeLog: * g++.dg/coroutines/co-await-initlist1.C: New test. --- gcc/cp/typeck.cc | 2 ++ .../g++.dg/coroutines/co-await-initlist1.C | 21 +++++++++++++++++++ 2 files changed, 23 insertions(+) create mode 100644 gcc/testsuite/g++.dg/coroutines/co-await-initlist1.C base-commit: 57052c6ed59c1a2ee4a67982f960e08593956955 diff --git a/gcc/cp/typeck.cc b/gcc/cp/typeck.cc index d5a3e501d8e..afb956087ce 100644 --- a/gcc/cp/typeck.cc +++ b/gcc/cp/typeck.cc @@ -9630,6 +9630,8 @@ cp_build_modify_expr (location_t loc, tree lhs, enum tree_code modifycode, } /* Allow array assignment in compiler-generated code. */ + else if (DECL_P (lhs) && DECL_ARTIFICIAL (lhs)) + /* OK, used by coroutines (co-await-initlist1.C). */; else if (!current_function_decl || !DECL_DEFAULTED_FN (current_function_decl)) { diff --git a/gcc/testsuite/g++.dg/coroutines/co-await-initlist1.C b/gcc/testsuite/g++.dg/coroutines/co-await-initlist1.C new file mode 100644 index 00000000000..b8e8923a9c8 --- /dev/null +++ b/gcc/testsuite/g++.dg/coroutines/co-await-initlist1.C @@ -0,0 +1,21 @@ +// PR c++/103871 +// { dg-do compile { target c++20 } } + +#include +#include + +struct my_coro { + struct promise_type { + my_coro get_return_object(); + std::suspend_never initial_suspend(); + std::suspend_never final_suspend() noexcept; + void unhandled_exception(); + }; +}; + +std::suspend_never inner(std::initializer_list); + +my_coro doesnt_work() +{ + co_await inner({ 1,2,3 }); +}