{"id":2226300,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2226300/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/aeimmIzkde2vEIsT@tucnak/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.2/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":"","list_archive_url":null,"date":"2026-04-22T10:44:40","name":"c++, libstc++, v2: Bump __cpp_impl_reflection and __cpp_lib_reflection","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"62fc5f439e4d1e6de704bf509670fbaf274081cf","submitter":{"id":671,"url":"http://patchwork.ozlabs.org/api/1.2/people/671/?format=json","name":"Jakub Jelinek","email":"jakub@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/aeimmIzkde2vEIsT@tucnak/mbox/","series":[{"id":500991,"url":"http://patchwork.ozlabs.org/api/1.2/series/500991/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=500991","date":"2026-04-22T10:44:40","name":"c++, libstc++, v2: Bump __cpp_impl_reflection and __cpp_lib_reflection","version":1,"mbox":"http://patchwork.ozlabs.org/series/500991/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2226300/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2226300/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=OJEeAR8L;\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","Content-Disposition":"inline","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 ","Reply-To":"Jakub Jelinek ","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"On Wed, Apr 22, 2026 at 11:36:01AM +0100, Jonathan Wakely wrote:\n> > > --- libstdc++-v3/include/std/meta.jj 2026-04-21 18:24:44.122033404 +0200\n> > > +++ libstdc++-v3/include/std/meta 2026-04-22 12:04:19.089452664 +0200\n> > > @@ -37,7 +37,7 @@\n> > > #define __glibcxx_want_define_static\n> > > #include \n> > >\n> > > -#if __glibcxx_reflection >= 202506L // C++ >= 26 && __cpp_impl_reflection\n> > > +#if __glibcxx_reflection >= 202603L // C++ >= 26 && __cpp_impl_reflection\n> >\n> > I don't think we need to change any of the #if checks below here,\n> > because nothing in those #if groups was changed by P3795. The checks\n> > in e.g. and the tests are saying \"is the value of the\n> > macro high enough that we should provide these features?\" and that's\n> > true for the old value.\n> \n> The #if in guards the addition of the annotations vector to\n> data_member_spec, so checking the new value there makes sense.\n\nYeah, for sure, and I think for std.cc.in too (otherwise\ne.g. std::meta::current_namespace wouldn't be available).\nFor and the two libstdc++ tests, I agree we can keep comparing\nagainst the old value. Actually, for the second case in std.cc.in (whether\nis_reflection_v is available) we can keep using the existing value too.\n\nSo here is an updated patch:\n\n2026-04-22 Jakub Jelinek \n\ngcc/c-family/\n\t* c-cppbuiltin.cc (c_cpp_builtins): Bump __cpp_impl_reflection value\n\tfrom 202506L to 202603L.\ngcc/testsuite/\n\t* g++.dg/DRs/dr2581-2.C: Adjust for __cpp_impl_reflection bump from\n\t202506L to 202603L.\n\t* g++.dg/reflect/feat1.C: Likewise. Also adjust for\n\t__cpp_lib_reflection bump from 202506L to 202603L.\n\t* g++.dg/reflect/feat2.C: Likewise.\n\t* g++.dg/reflect/feat3.C: Likewise.\nlibstdc++-v3/\n\t* include/bits/version.def (reflection): Bump 202506L to 202603L\n\tfor both v and in extra_cond.\n\t* include/bits/version.h: Regenerate.\n\t* include/std/meta: Compare __glibcxx_reflection against\n\t202603L rather than 202506L.\n\t* src/c++23/std.cc.in: Likewise.\n\n\n\n\tJakub","diff":"--- gcc/c-family/c-cppbuiltin.cc.jj\t2026-03-27 10:17:13.713337609 +0100\n+++ gcc/c-family/c-cppbuiltin.cc\t2026-04-22 11:59:44.926135527 +0200\n@@ -1119,7 +1119,7 @@ c_cpp_builtins (cpp_reader *pfile)\n \t cpp_define (pfile, \"__cpp_constexpr_virtual_inheritance=202506L\");\n \t cpp_define (pfile, \"__cpp_expansion_statements=202506L\");\n \t if (flag_reflection)\n-\t cpp_define (pfile, \"__cpp_impl_reflection=202506L\");\n+\t cpp_define (pfile, \"__cpp_impl_reflection=202603L\");\n \t else\n \t cpp_warn (pfile, \"__cpp_impl_reflection\");\n \t}\n--- gcc/testsuite/g++.dg/DRs/dr2581-2.C.jj\t2026-03-27 10:17:15.320311386 +0100\n+++ gcc/testsuite/g++.dg/DRs/dr2581-2.C\t2026-04-22 12:02:27.265362686 +0200\n@@ -64,7 +64,7 @@\n #define __cpp_impl_coroutine 201902L\t\t// { dg-error \"'__cpp_impl_coroutine' redefined\" \"\" { target c++20 } }\n #define __cpp_impl_destroying_delete 201806L\t// { dg-error \"'__cpp_impl_destroying_delete' redefined\" \"\" { target c++20 } }\n #define __cpp_impl_three_way_comparison 201907L\t// { dg-error \"'__cpp_impl_three_way_comparison' redefined\" \"\" { target c++20 } }\n-#define __cpp_impl_reflection 202506L\t\t// { dg-error \"'__cpp_impl_reflection' redefined\" \"\" { target c++26 } }\n+#define __cpp_impl_reflection 202603L\t\t// { dg-error \"'__cpp_impl_reflection' redefined\" \"\" { target c++26 } }\n #define __cpp_implicit_move 202207L\t\t// { dg-error \"'__cpp_implicit_move' redefined\" \"\" { target c++23 } }\n #define __cpp_inheriting_constructors 201511L\t// { dg-error \"'__cpp_inheriting_constructors' redefined\" \"\" { target c++20 } }\n #define __cpp_init_captures 201803L\t\t// { dg-error \"'__cpp_init_captures' redefined\" \"\" { target c++14 } }\n--- gcc/testsuite/g++.dg/reflect/feat1.C.jj\t2026-03-27 10:17:16.125298250 +0100\n+++ gcc/testsuite/g++.dg/reflect/feat1.C\t2026-04-22 12:00:26.919418259 +0200\n@@ -4,14 +4,14 @@\n \n #ifndef __cpp_impl_reflection\n # error \"__cpp_impl_reflection\"\n-#elif __cpp_impl_reflection != 202506\n-# error \"__cpp_impl_reflection != 202506\"\n+#elif __cpp_impl_reflection != 202603\n+# error \"__cpp_impl_reflection != 202603\"\n #endif\n \n #include \n \n #ifndef __cpp_lib_reflection\n # error \"__cpp_lib_reflection\"\n-#elif __cpp_lib_reflection != 202506\n-# error \"__cpp_lib_reflection != 202506\"\n+#elif __cpp_lib_reflection != 202603\n+# error \"__cpp_lib_reflection != 202603\"\n #endif\n--- gcc/testsuite/g++.dg/reflect/feat2.C.jj\t2026-03-27 10:17:16.125298250 +0100\n+++ gcc/testsuite/g++.dg/reflect/feat2.C\t2026-04-22 12:00:42.738148067 +0200\n@@ -6,8 +6,8 @@\n \n #ifndef __cpp_lib_reflection\n # error \"__cpp_lib_reflection\"\n-#elif __cpp_lib_reflection != 202506\n-# error \"__cpp_lib_reflection != 202506\"\n+#elif __cpp_lib_reflection != 202603\n+# error \"__cpp_lib_reflection != 202603\"\n #endif\n \n #ifndef __cpp_lib_define_static\n--- gcc/testsuite/g++.dg/reflect/feat3.C.jj\t2026-03-27 10:17:16.125298250 +0100\n+++ gcc/testsuite/g++.dg/reflect/feat3.C\t2026-04-22 12:01:46.374061130 +0200\n@@ -6,8 +6,8 @@\n \n #ifndef __cpp_lib_reflection\n # error \"__cpp_lib_reflection\"\n-#elif __cpp_lib_reflection != 202506\n-# error \"__cpp_lib_reflection != 202506\"\n+#elif __cpp_lib_reflection != 202603\n+# error \"__cpp_lib_reflection != 202603\"\n #endif\n \n #ifndef __cpp_lib_define_static\n--- libstdc++-v3/include/bits/version.def.jj\t2026-04-14 21:13:35.039460718 +0200\n+++ libstdc++-v3/include/bits/version.def\t2026-04-22 12:03:42.709074062 +0200\n@@ -2337,9 +2337,9 @@ ftms = {\n ftms = {\n name = reflection;\n values = {\n- v = 202506;\n+ v = 202603;\n cxxmin = 26;\n- extra_cond = \"__cpp_impl_reflection >= 202506L\";\n+ extra_cond = \"__cpp_impl_reflection >= 202603L\";\n cxx11abi = yes;\n };\n };\n--- libstdc++-v3/include/bits/version.h.jj\t2026-04-14 21:13:35.039460718 +0200\n+++ libstdc++-v3/include/bits/version.h\t2026-04-22 12:03:49.126595150 +0200\n@@ -2602,10 +2602,10 @@\n #undef __glibcxx_want_philox_engine\n \n #if !defined(__cpp_lib_reflection)\n-# if (__cplusplus > 202302L) && _GLIBCXX_USE_CXX11_ABI && (__cpp_impl_reflection >= 202506L)\n-# define __glibcxx_reflection 202506L\n+# if (__cplusplus > 202302L) && _GLIBCXX_USE_CXX11_ABI && (__cpp_impl_reflection >= 202603L)\n+# define __glibcxx_reflection 202603L\n # if defined(__glibcxx_want_all) || defined(__glibcxx_want_reflection)\n-# define __cpp_lib_reflection 202506L\n+# define __cpp_lib_reflection 202603L\n # endif\n # endif\n #endif /* !defined(__cpp_lib_reflection) */\n--- libstdc++-v3/include/std/meta.jj\t2026-04-21 18:24:44.122033404 +0200\n+++ libstdc++-v3/include/std/meta\t2026-04-22 12:04:19.089452664 +0200\n@@ -37,7 +37,7 @@\n #define __glibcxx_want_define_static\n #include \n \n-#if __glibcxx_reflection >= 202506L // C++ >= 26 && __cpp_impl_reflection\n+#if __glibcxx_reflection >= 202603L // C++ >= 26 && __cpp_impl_reflection\n \n #include \n #include \n--- libstdc++-v3/src/c++23/std.cc.in.jj\t2026-04-10 08:45:20.742811345 +0200\n+++ libstdc++-v3/src/c++23/std.cc.in\t2026-04-22 12:05:31.902208977 +0200\n@@ -2083,7 +2083,7 @@ export namespace std::pmr\n }\n \n // \n-#if __glibcxx_reflection >= 202506L\n+#if __glibcxx_reflection >= 202603L\n export namespace std\n {\n #if __has_builtin(__builtin_is_string_literal)\n","prefixes":[]}