From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2122) id BA71B3857705; Sat, 22 Apr 2023 00:22:41 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org BA71B3857705 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1682122961; bh=55nJcGa2sKI27JSldg80RJwlPw36MpSCtpbcZng0Huc=; h=From:To:Subject:Date:From; b=kgCHlj/c2zQJ9/jFYPT7nr51AUnmWsHKDmqP/MjcSO4+u5/OJrijek578A1XAePzO sLd8sxu0L/tL7C502gkCG7Rp2dzk5Ol9u0HasG0V/y6pMFokXNdXGPOjw07touszNZ PLs3aeDHix5j2cqga1/iCuJjRnfccQscUB3MErQ8= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Jason Merrill To: gcc-cvs@gcc.gnu.org Subject: [gcc r11-10641] c++: co_await and initializer_list [PR103871] X-Act-Checkin: gcc X-Git-Author: Jason Merrill X-Git-Refname: refs/heads/releases/gcc-11 X-Git-Oldrev: 469881efc4ad365dce3db26dab7d33f95d36f92f X-Git-Newrev: 998e77e55126269b3e67b2f05f0f27a421839673 Message-Id: <20230422002241.BA71B3857705@sourceware.org> Date: Sat, 22 Apr 2023 00:22:41 +0000 (GMT) List-Id: https://gcc.gnu.org/g:998e77e55126269b3e67b2f05f0f27a421839673 commit r11-10641-g998e77e55126269b3e67b2f05f0f27a421839673 Author: Jason Merrill Date: Wed Mar 15 16:33:37 2023 -0400 c++: co_await and initializer_list [PR103871] 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.c (cp_build_modify_expr): Allow array initialization of DECL_ARTIFICIAL variable. gcc/testsuite/ChangeLog: * g++.dg/coroutines/co-await-initlist1.C: New test. Diff: --- gcc/cp/typeck.c | 2 ++ .../g++.dg/coroutines/co-await-initlist1.C | 21 +++++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/gcc/cp/typeck.c b/gcc/cp/typeck.c index e61d67727f0..c2b703e3cf0 100644 --- a/gcc/cp/typeck.c +++ b/gcc/cp/typeck.c @@ -8891,6 +8891,8 @@ 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 }); +}