{"id":2226152,"url":"http://patchwork.ozlabs.org/api/patches/2226152/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/bmm.hhuay3vzv6.gcc.gcc-TEST.ppalka.9.1.1@forge-stage.sourceware.org/","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":"","list_archive_url":null,"date":"2026-04-22T10:14:42","name":"[v1,1/3] libstdc++: Implement P1206R7 range-key-type and range-mapped-type helpers","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"4477bb3ac172b7f0417e67b14b0c29d93530a759","submitter":{"id":93215,"url":"http://patchwork.ozlabs.org/api/people/93215/?format=json","name":"ppalka via Sourceware Forge","email":"forge-bot+ppalka@forge-stage.sourceware.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/bmm.hhuay3vzv6.gcc.gcc-TEST.ppalka.9.1.1@forge-stage.sourceware.org/mbox/","series":[{"id":500959,"url":"http://patchwork.ozlabs.org/api/series/500959/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=500959","date":"2026-04-22T10:14:41","name":"libstdc++: Implement C++23 and ","version":1,"mbox":"http://patchwork.ozlabs.org/series/500959/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2226152/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2226152/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 spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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server2.sourceware.org","From":"ppalka via Sourceware Forge\n ","Date":"Wed, 22 Apr 2026 10:14:42 +0000","Subject":"[PATCH v1 1/3] libstdc++: Implement P1206R7 range-key-type and\n range-mapped-type helpers","To":"gcc-patches mailing list ","Message-ID":"\n ","X-Mailer":"batrachomyomachia","X-Requested-Reviewer":"redi","X-Pull-Request-Organization":"gcc","X-Pull-Request-Repository":"gcc-TEST","X-Pull-Request":"https://forge.sourceware.org/gcc/gcc-TEST/pulls/9","References":"\n ","In-Reply-To":"\n ","X-Patch-URL":"\n https://forge.sourceware.org/gcc/gcc-TEST/commit/891503b8b697daebb5bada203a1e08ff31a4887b","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":"gcc-patches mailing list ,\n ppalka@gcc.gnu.org","Errors-To":"gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org"},"content":"From: Patrick Palka \n\nThese helpers will be needed in the upcoming and \nimplementations.\n\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/ranges_base.h (__detail::__range_key_type):\n\tDefine as per P1206R7.\n\t(__detail::__range_mapped_type): Likewise.\n---\n libstdc++-v3/include/bits/ranges_base.h | 8 ++++++++\n 1 file changed, 8 insertions(+)","diff":"diff --git a/libstdc++-v3/include/bits/ranges_base.h b/libstdc++-v3/include/bits/ranges_base.h\nindex a2c743ff56bc..c8cd4e87b12c 100644\n--- a/libstdc++-v3/include/bits/ranges_base.h\n+++ b/libstdc++-v3/include/bits/ranges_base.h\n@@ -1087,6 +1087,14 @@ namespace __detail\n concept __container_compatible_range\n = ranges::input_range<_Rg>\n \t && convertible_to, _Tp>;\n+\n+ template\n+ using __range_key_type\n+ = remove_const_t::first_type>;\n+\n+ template\n+ using __range_mapped_type\n+ = typename ranges::range_value_t<_Range>::second_type;\n }\n /// @endcond\n #endif\n","prefixes":["v1","1/3"]}