{"id":2227785,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2227785/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260424085642.804561-1-tkaminsk@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":"<20260424085642.804561-1-tkaminsk@redhat.com>","date":"2026-04-24T08:52:45","name":"libstdc+: Provide iterator type for basic_const_iterator.","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"7e9232a1832f840bd3aa3fb238f37373303ea3ce","submitter":{"id":90409,"url":"http://patchwork.ozlabs.org/api/1.1/people/90409/?format=json","name":"Tomasz Kamiński","email":"tkaminsk@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260424085642.804561-1-tkaminsk@redhat.com/mbox/","series":[{"id":501322,"url":"http://patchwork.ozlabs.org/api/1.1/series/501322/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=501322","date":"2026-04-24T08:52:45","name":"libstdc+: Provide iterator type for basic_const_iterator.","version":1,"mbox":"http://patchwork.ozlabs.org/series/501322/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2227785/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2227785/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=BhD/LBZJ;\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":"This resolves 4253. basic_const_iterator should provide iterator_type.\n\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/stl_iterator.h (basic_const_iterator::iterator_type):\n\tDefine.\n\t* testsuite/24_iterators/const_iterator/1.cc: Tests for\n\titerator_type.\n---\nTested on x86_64-linux. OK for trunk?\n\n libstdc++-v3/include/bits/stl_iterator.h | 3 +++\n libstdc++-v3/testsuite/24_iterators/const_iterator/1.cc | 2 ++\n 2 files changed, 5 insertions(+)","diff":"diff --git a/libstdc++-v3/include/bits/stl_iterator.h b/libstdc++-v3/include/bits/stl_iterator.h\nindex f16f591ad63..6439deb608a 100644\n--- a/libstdc++-v3/include/bits/stl_iterator.h\n+++ b/libstdc++-v3/include/bits/stl_iterator.h\n@@ -2691,6 +2691,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n template friend class basic_const_iterator;\n \n public:\n+ // _GLIBCXX_RESOLVE_LIB_DEFECTS\n+ // 4253. basic_const_iterator should provide iterator_type\n+ using iterator_type = _It;\n using iterator_concept = decltype(_S_iter_concept());\n using value_type = iter_value_t<_It>;\n using difference_type = iter_difference_t<_It>;\ndiff --git a/libstdc++-v3/testsuite/24_iterators/const_iterator/1.cc b/libstdc++-v3/testsuite/24_iterators/const_iterator/1.cc\nindex f2bcad4f09c..7f791ddbef9 100644\n--- a/libstdc++-v3/testsuite/24_iterators/const_iterator/1.cc\n+++ b/libstdc++-v3/testsuite/24_iterators/const_iterator/1.cc\n@@ -29,6 +29,7 @@ test01()\n else\n {\n using Wrapped = std::basic_const_iterator;\n+ static_assert( std::same_as );\n \n static_assert( std::same_as, Wrapped> );\n static_assert( std::same_as, Wrapped> );\n@@ -64,6 +65,7 @@ test02()\n {\n static_assert( !ranges::constant_range );\n using Wrapped = std::basic_const_iterator>;\n+ static_assert( std::same_as> );\n \n if constexpr (Constable)\n \t{\n","prefixes":[]}