{"id":2223248,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2223248/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260414195353.221467-1-ppalka@redhat.com/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.1/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},"msgid":"<20260414195353.221467-1-ppalka@redhat.com>","date":"2026-04-14T19:53:53","name":"c++: static local meta::info as &targ [PR124824]","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"2f5dd12ffeae037dd9eed648b2edb6d991728fd7","submitter":{"id":78319,"url":"http://patchwork.ozlabs.org/api/1.1/people/78319/?format=json","name":"Patrick Palka","email":"ppalka@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260414195353.221467-1-ppalka@redhat.com/mbox/","series":[{"id":499889,"url":"http://patchwork.ozlabs.org/api/1.1/series/499889/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=499889","date":"2026-04-14T19:53:53","name":"c++: static local meta::info as &targ [PR124824]","version":1,"mbox":"http://patchwork.ozlabs.org/series/499889/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223248/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2223248/checks/","tags":{},"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=hZG8I4p/;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::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 on x86_64-pc-linux-gnu, does this look OK for trunk?\n\n-- >8 --\n\nWe're crashing in discriminator_for_local_entity for a static local\nmeta::info variable because determine_local_discriminator is never\ncalled for it from cp_finish_decl. The code path was disabled for\nconsteval-only types in the main Reflection commit r16-6808 to avoid\ncreating a varpool_node for such types.\n\nThis patch naively restricts the get_create call itself rather than the\nentire block so that we still call determine_local_discriminator, which\nseems to suffice to accept the below testcase.\n\n\tPR c++/124824\n\ngcc/cp/ChangeLog:\n\n\t* decl.cc (cp_finish_decl): Sink !consteval_only_p check\n\tso that we still call determine_local_discriminator for\n\tconsteval-only types.\n\ngcc/testsuite/ChangeLog:\n\n\t* g++.dg/reflect/expr17.C: New test.\n---\n gcc/cp/decl.cc | 10 +++++-----\n gcc/testsuite/g++.dg/reflect/expr17.C | 10 ++++++++++\n 2 files changed, 15 insertions(+), 5 deletions(-)\n create mode 100644 gcc/testsuite/g++.dg/reflect/expr17.C","diff":"diff --git a/gcc/cp/decl.cc b/gcc/cp/decl.cc\nindex 930253d96460..23b984500444 100644\n--- a/gcc/cp/decl.cc\n+++ b/gcc/cp/decl.cc\n@@ -9885,8 +9885,7 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,\n \t variable. */\n if (DECL_FUNCTION_SCOPE_P (decl)\n \t && TREE_STATIC (decl)\n-\t && !DECL_ARTIFICIAL (decl)\n-\t && !consteval_only_p (decl))\n+\t && !DECL_ARTIFICIAL (decl))\n \t{\n \t /* The variable holding an anonymous union will have had its\n \t discriminator set in finish_anon_union, after which it's\n@@ -9904,9 +9903,10 @@ cp_finish_decl (tree decl, tree init, bool init_const_expr_p,\n \t walk_tree (&init, notice_forced_label_r, NULL, NULL);\n \t add_local_decl (cfun, decl);\n \t }\n-\t /* And make sure it's in the symbol table for\n-\t c_parse_final_cleanups to find. */\n-\t varpool_node::get_create (decl);\n+\t if (!consteval_only_p (decl))\n+\t /* And make sure it's in the symbol table for\n+\t c_parse_final_cleanups to find. */\n+\t varpool_node::get_create (decl);\n \t}\n \n if (flag_openmp\ndiff --git a/gcc/testsuite/g++.dg/reflect/expr17.C b/gcc/testsuite/g++.dg/reflect/expr17.C\nnew file mode 100644\nindex 000000000000..d4f04d2c4094\n--- /dev/null\n+++ b/gcc/testsuite/g++.dg/reflect/expr17.C\n@@ -0,0 +1,10 @@\n+// PR c++/124824\n+// { dg-do compile { target c++26 } }\n+// { dg-additional-options \"-freflection\" }\n+\n+template void f() { }\n+\n+int main() {\n+ static constexpr auto M = ^^int;\n+ f<&M>();\n+}\n","prefixes":[]}