{"id":2222744,"url":"http://patchwork.ozlabs.org/api/patches/2222744/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260413150105.930501-1-jason@redhat.com/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/projects/17/?format=json","name":"GNU Compiler Collection","link_name":"gcc","list_id":"gcc-patches.gcc.gnu.org","list_email":"gcc-patches@gcc.gnu.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260413150105.930501-1-jason@redhat.com>","list_archive_url":null,"date":"2026-04-13T15:00:45","name":"[pushed] c++: lambda capture pack and noexcept [PR122632]","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"22a429cc54aab94fc8065dfbda600052d9524785","submitter":{"id":4337,"url":"http://patchwork.ozlabs.org/api/people/4337/?format=json","name":"Jason Merrill","email":"jason@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260413150105.930501-1-jason@redhat.com/mbox/","series":[{"id":499719,"url":"http://patchwork.ozlabs.org/api/series/499719/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=499719","date":"2026-04-13T15:00:45","name":"[pushed] c++: lambda capture pack and noexcept [PR122632]","version":1,"mbox":"http://patchwork.ozlabs.org/series/499719/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222744/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222744/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=VoZi/594;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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charset=\"US-ASCII\"; x-default=true","X-BeenThere":"gcc-patches@gcc.gnu.org","X-Mailman-Version":"2.1.30","Precedence":"list","List-Id":"Gcc-patches mailing list ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"Tested x86_64-pc-linux-gnu, applying to trunk.\n\n-- 8< --\n\nThis should have been fixed by the patch for 122884, except that we were\nforgetting to treat the noexcept substitution as an unevaluated context.\n\n\tPR c++/122632\n\ngcc/cp/ChangeLog:\n\n\t* pt.cc (tsubst_exception_specification): Add cp_unevaluated.\n\ngcc/testsuite/ChangeLog:\n\n\t* g++.dg/cpp23/lambda-scope11.C: New test.\n---\n gcc/cp/pt.cc | 1 +\n gcc/testsuite/g++.dg/cpp23/lambda-scope11.C | 10 ++++++++++\n 2 files changed, 11 insertions(+)\n create mode 100644 gcc/testsuite/g++.dg/cpp23/lambda-scope11.C\n\n\nbase-commit: 73ade2eefb56338d99a6e642d28fd7efae8b6289","diff":"diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc\nindex f778c7c270d..96faac7a2b0 100644\n--- a/gcc/cp/pt.cc\n+++ b/gcc/cp/pt.cc\n@@ -16720,6 +16720,7 @@ tsubst_exception_specification (tree fntype,\n \t\t\t\t\t args);\n \t expr = DEFERRED_NOEXCEPT_PATTERN (expr);\n \t }\n+\t cp_unevaluated u;\n \t new_specs = tsubst_expr (expr, args, complain, in_decl);\n \t}\n new_specs = build_noexcept_spec (new_specs, complain);\ndiff --git a/gcc/testsuite/g++.dg/cpp23/lambda-scope11.C b/gcc/testsuite/g++.dg/cpp23/lambda-scope11.C\nnew file mode 100644\nindex 00000000000..916c746e3b3\n--- /dev/null\n+++ b/gcc/testsuite/g++.dg/cpp23/lambda-scope11.C\n@@ -0,0 +1,10 @@\n+// PR c++/122632\n+// { dg-do compile { target c++20 } }\n+\n+void f(auto... x) {\n+ [...y = x]() noexcept((... && noexcept(y))) {};\n+}\n+\n+int main() {\n+\tf();\n+}\n","prefixes":["pushed"]}