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GET /api/patches/2226750/?format=api
{ "id": 2226750, "url": "http://patchwork.ozlabs.org/api/patches/2226750/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/bmm.hhuozlstss.gcc.gcc-TEST.tkaminsk.78.1.1@forge-stage.sourceware.org/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/projects/17/?format=api", "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": "<bmm.hhuozlstss.gcc.gcc-TEST.tkaminsk.78.1.1@forge-stage.sourceware.org>", "list_archive_url": null, "date": "2026-04-22T18:43:59", "name": "[v1,01/12] libstdc++: Eliminate __gnu_cxx::__ops function objects (I)", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f2738722d2da85d2e2e754f5af8064f6ec60ab5f", "submitter": { "id": 93223, "url": "http://patchwork.ozlabs.org/api/people/93223/?format=api", "name": "tkaminsk via Sourceware Forge", "email": "forge-bot+tkaminsk@forge-stage.sourceware.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/bmm.hhuozlstss.gcc.gcc-TEST.tkaminsk.78.1.1@forge-stage.sourceware.org/mbox/", "series": [ { "id": 501087, "url": "http://patchwork.ozlabs.org/api/series/501087/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=501087", "date": "2026-04-22T18:44:01", "name": "remove-predefined-ops", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501087/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226750/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2226750/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "gcc-patches@gcc.gnu.org" ], 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"ARC-Filter": "OpenARC Filter v1.0.0 sourceware.org 5678540A0856", "ARC-Seal": "i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1776883533; cv=none;\n b=D7+LtDFEYBuD10Vy/ACwPEQC12k+Pl9qZLfCcxc/3AklUt540eklWsqBY//r8RPa1J8Frrwl9Q84HMZg+9IaY41CdkV6n8QmnWzaER+v4m84Q9kVl498n+OUJ5dKWjmnxOI07csb78o+SQl71IUBrmECIn7Eps59y162PFUl4jI=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=sourceware.org; s=key;\n t=1776883533; c=relaxed/simple;\n bh=WlkRJyIvvwgcWneMNwp+KMlENMjCvT8D3ceucLykF1Y=;\n h=From:Date:Subject:To:Message-ID;\n b=NtcgT+TjuDFKFjDprrmg9ZSQgVEa4zElFbEdJI43QVyhu50Ej3QX4KuLn9um1cxuc0VbmJMIlWg4rO58daFE9ScTd1DscxhIdZO9etO5cdvMyQsr2QtQWaLz6y7KBLPSN60MSPc8+UV548zs29m6CYMzrmP8Wda/Wpo5vSfRNjQ=", "ARC-Authentication-Results": "i=1; server2.sourceware.org", "From": "tkaminsk via Sourceware Forge\n <forge-bot+tkaminsk@forge-stage.sourceware.org>", "Date": "Wed, 22 Apr 2026 18:43:59 +0000", "Subject": "[PATCH v1 01/12] libstdc++: Eliminate __gnu_cxx::__ops function\n objects (I)", "To": "gcc-patches mailing list <gcc-patches@gcc.gnu.org>", "Message-ID": "\n <bmm.hhuozlstss.gcc.gcc-TEST.tkaminsk.78.1.1@forge-stage.sourceware.org>", "X-Mailer": "batrachomyomachia", "X-Requested-Reviewer": "fdumont", "X-Pull-Request-Organization": "gcc", "X-Pull-Request-Repository": "gcc-TEST", "X-Pull-Request": "https://forge.sourceware.org/gcc/gcc-TEST/pulls/78", "References": "\n <bmm.hhuozlstss.gcc.gcc-TEST.tkaminsk.78.1.0@forge-stage.sourceware.org>", "In-Reply-To": "\n <bmm.hhuozlstss.gcc.gcc-TEST.tkaminsk.78.1.0@forge-stage.sourceware.org>", "X-Patch-URL": "\n https://forge.sourceware.org/redi/gcc/commit/656053771e75d9567b7edbe2d22edc8750c0d15a", "X-BeenThere": "gcc-patches@gcc.gnu.org", "X-Mailman-Version": "2.1.30", "Precedence": "list", "List-Id": "Gcc-patches mailing list <gcc-patches.gcc.gnu.org>", "List-Unsubscribe": "<https://gcc.gnu.org/mailman/options/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=unsubscribe>", "List-Archive": "<https://gcc.gnu.org/pipermail/gcc-patches/>", "List-Post": "<mailto:gcc-patches@gcc.gnu.org>", "List-Help": "<mailto:gcc-patches-request@gcc.gnu.org?subject=help>", "List-Subscribe": "<https://gcc.gnu.org/mailman/listinfo/gcc-patches>,\n <mailto:gcc-patches-request@gcc.gnu.org?subject=subscribe>", "Reply-To": "gcc-patches mailing list <gcc-patches@gcc.gnu.org>,\n tkaminsk@gcc.gnu.org", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "From: Jonathan Wakely <jwakely@redhat.com>\n\nadjacent_find, unique, unique_copy, min_element, max_element, minmax_element.\n\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/predefined_ops.h (equal_to, less): Define.\n\t* include/bits/stl_function.h (equal_to<void>, less<void>):\n\tDefine for C++98 and C++11.\n\t* include/bits/stl_algo.h (__adjacent_find, __unique)\n\t(__unique_copy, __unique_copy_1, __minmax_element, __min_element)\n\t(__max_element): Dereference iterators when invoking predicate.\n\t(unique, minmax_element, minmax, adjacent_find, unique_copy)\n\t(min_element, max_element, min, max): use direct predicates\n\tinstead of __iter_equal_to_iter, __iter_comp_iter, and\n\t__iter_less_iter.\n---\n libstdc++-v3/include/bits/predefined_ops.h | 6 ++\n libstdc++-v3/include/bits/stl_algo.h | 81 ++++++++++------------\n libstdc++-v3/include/bits/stl_function.h | 52 ++++++++++++++\n 3 files changed, 93 insertions(+), 46 deletions(-)", "diff": "diff --git a/libstdc++-v3/include/bits/predefined_ops.h b/libstdc++-v3/include/bits/predefined_ops.h\nindex 5759ebd0e5bc..cb7a70ffe347 100644\n--- a/libstdc++-v3/include/bits/predefined_ops.h\n+++ b/libstdc++-v3/include/bits/predefined_ops.h\n@@ -31,11 +31,17 @@\n #define _GLIBCXX_PREDEFINED_OPS_H\t1\n \n #include <bits/move.h>\n+#include <bits/stl_function.h> // less<void>, equal_to<void>\n \n namespace __gnu_cxx\n {\n namespace __ops\n {\n+ // These two explicit specializations are always defined by libstdc++,\n+ // even when __cpp_lib_transparent_operators is not defined.\n+ typedef std::equal_to<void> equal_to;\n+ typedef std::less<void> less;\n+\n struct _Iter_less_iter\n {\n template<typename _Iterator1, typename _Iterator2>\ndiff --git a/libstdc++-v3/include/bits/stl_algo.h b/libstdc++-v3/include/bits/stl_algo.h\nindex 78c63e79a279..23ab035c1c19 100644\n--- a/libstdc++-v3/include/bits/stl_algo.h\n+++ b/libstdc++-v3/include/bits/stl_algo.h\n@@ -828,7 +828,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n _ForwardIterator __next = __first;\n while (++__next != __last)\n \t{\n-\t if (__binary_pred(__first, __next))\n+\t if (__binary_pred(*__first, *__next))\n \t return __first;\n \t __first = __next;\n \t}\n@@ -850,7 +850,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n _ForwardIterator __dest = __first;\n ++__first;\n while (++__first != __last)\n-\tif (!__binary_pred(__dest, __first))\n+\tif (!__binary_pred(*__dest, *__first))\n \t *++__dest = _GLIBCXX_MOVE(*__first);\n return ++__dest;\n }\n@@ -881,8 +881,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n \t\t typename iterator_traits<_ForwardIterator>::value_type>)\n __glibcxx_requires_valid_range(__first, __last);\n \n- return std::__unique(__first, __last,\n-\t\t\t __gnu_cxx::__ops::__iter_equal_to_iter());\n+ return std::__unique(__first, __last, __gnu_cxx::__ops::equal_to());\n }\n \n /**\n@@ -914,8 +913,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n \t\ttypename iterator_traits<_ForwardIterator>::value_type>)\n __glibcxx_requires_valid_range(__first, __last);\n \n- return std::__unique(__first, __last,\n-\t\t\t __gnu_cxx::__ops::__iter_comp_iter(__binary_pred));\n+ return std::__unique(__first, __last, __binary_pred);\n }\n \n // _GLIBCXX_RESOLVE_LIB_DEFECTS\n@@ -934,7 +932,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n _ForwardIterator __prev = __first;\n *__result = *__first;\n while (++__first != __last)\n-\tif (!__binary_pred(__prev, __first))\n+\tif (!__binary_pred(*__prev, *__first))\n \t {\n \t *++__result = *__first;\n \t __prev = __first;\n@@ -956,7 +954,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n _Val __value = *__first;\n *__result = __value;\n while (++__first != __last)\n-\tif (!__binary_pred(std::__addressof(__value), __first))\n+\tif (!__binary_pred(__value, *__first))\n \t {\n \t __value = *__first;\n \t *++__result = __value;\n@@ -975,7 +973,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n {\n *__result = *__first;\n while (++__first != __last)\n-\tif (!__binary_pred(__result, __first))\n+\tif (!__binary_pred(*__result, *__first))\n \t *++__result = *__first;\n return ++__result;\n }\n@@ -3354,7 +3352,7 @@ _GLIBCXX_END_INLINE_ABI_NAMESPACE(_V2)\n \treturn std::make_pair(__first, __first);\n \n _ForwardIterator __min{}, __max{};\n- if (__comp(__next, __first))\n+ if (__comp(*__next, *__first))\n \t{\n \t __min = __next;\n \t __max = __first;\n@@ -3373,25 +3371,25 @@ _GLIBCXX_END_INLINE_ABI_NAMESPACE(_V2)\n \t __next = __first;\n \t if (++__next == __last)\n \t {\n-\t if (__comp(__first, __min))\n+\t if (__comp(*__first, *__min))\n \t\t__min = __first;\n-\t else if (!__comp(__first, __max))\n+\t else if (!__comp(*__first, *__max))\n \t\t__max = __first;\n \t break;\n \t }\n \n-\t if (__comp(__next, __first))\n+\t if (__comp(*__next, *__first))\n \t {\n-\t if (__comp(__next, __min))\n+\t if (__comp(*__next, *__min))\n \t\t__min = __next;\n-\t if (!__comp(__first, __max))\n+\t if (!__comp(*__first, *__max))\n \t\t__max = __first;\n \t }\n \t else\n \t {\n-\t if (__comp(__first, __min))\n+\t if (__comp(*__first, *__min))\n \t\t__min = __first;\n-\t if (!__comp(__next, __max))\n+\t if (!__comp(*__next, *__max))\n \t\t__max = __next;\n \t }\n \n@@ -3425,8 +3423,7 @@ _GLIBCXX_END_INLINE_ABI_NAMESPACE(_V2)\n __glibcxx_requires_valid_range(__first, __last);\n __glibcxx_requires_irreflexive(__first, __last);\n \n- return std::__minmax_element(__first, __last,\n-\t\t\t\t __gnu_cxx::__ops::__iter_less_iter());\n+ return std::__minmax_element(__first, __last, __gnu_cxx::__ops::less());\n }\n \n /**\n@@ -3455,8 +3452,7 @@ _GLIBCXX_END_INLINE_ABI_NAMESPACE(_V2)\n __glibcxx_requires_valid_range(__first, __last);\n __glibcxx_requires_irreflexive_pred(__first, __last, __comp);\n \n- return std::__minmax_element(__first, __last,\n-\t\t\t\t __gnu_cxx::__ops::__iter_comp_iter(__comp));\n+ return std::__minmax_element(__first, __last, __comp);\n }\n \n template<typename _Tp>\n@@ -3467,7 +3463,7 @@ _GLIBCXX_END_INLINE_ABI_NAMESPACE(_V2)\n __glibcxx_requires_irreflexive(__l.begin(), __l.end());\n pair<const _Tp*, const _Tp*> __p =\n \tstd::__minmax_element(__l.begin(), __l.end(),\n-\t\t\t __gnu_cxx::__ops::__iter_less_iter());\n+\t\t\t __gnu_cxx::__ops::less());\n return std::make_pair(*__p.first, *__p.second);\n }\n \n@@ -3478,8 +3474,7 @@ _GLIBCXX_END_INLINE_ABI_NAMESPACE(_V2)\n {\n __glibcxx_requires_irreflexive_pred(__l.begin(), __l.end(), __comp);\n pair<const _Tp*, const _Tp*> __p =\n-\tstd::__minmax_element(__l.begin(), __l.end(),\n-\t\t\t __gnu_cxx::__ops::__iter_comp_iter(__comp));\n+\tstd::__minmax_element(__l.begin(), __l.end(), __comp);\n return std::make_pair(*__p.first, *__p.second);\n }\n \n@@ -4043,7 +4038,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n __glibcxx_requires_valid_range(__first, __last);\n \n return std::__adjacent_find(__first, __last,\n-\t\t\t\t __gnu_cxx::__ops::__iter_equal_to_iter());\n+\t\t\t\t __gnu_cxx::__ops::equal_to());\n }\n \n /**\n@@ -4070,8 +4065,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n \t typename iterator_traits<_ForwardIterator>::value_type>)\n __glibcxx_requires_valid_range(__first, __last);\n \n- return std::__adjacent_find(__first, __last,\n-\t\t\t__gnu_cxx::__ops::__iter_comp_iter(__binary_pred));\n+ return std::__adjacent_find(__first, __last, __binary_pred);\n }\n \n /**\n@@ -4488,7 +4482,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n if (__first == __last)\n \treturn __result;\n return std::__unique_copy(__first, __last, __result,\n-\t\t\t\t__gnu_cxx::__ops::__iter_equal_to_iter(),\n+\t\t\t\t__gnu_cxx::__ops::equal_to(),\n \t\t\t\tstd::__iterator_category(__first));\n }\n \n@@ -4529,8 +4523,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n \n if (__first == __last)\n \treturn __result;\n- return std::__unique_copy(__first, __last, __result,\n-\t\t\t__gnu_cxx::__ops::__iter_comp_iter(__binary_pred),\n+ return std::__unique_copy(__first, __last, __result, __binary_pred,\n \t\t\t\tstd::__iterator_category(__first));\n }\n \n@@ -5666,7 +5659,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n \treturn __first;\n _ForwardIterator __result = __first;\n while (++__first != __last)\n-\tif (__comp(__first, __result))\n+\tif (__comp(*__first, *__result))\n \t __result = __first;\n return __result;\n }\n@@ -5680,8 +5673,8 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n */\n template<typename _ForwardIterator>\n _GLIBCXX_NODISCARD _GLIBCXX14_CONSTEXPR\n- _ForwardIterator\n- inline min_element(_ForwardIterator __first, _ForwardIterator __last)\n+ inline _ForwardIterator\n+ min_element(_ForwardIterator __first, _ForwardIterator __last)\n {\n // concept requirements\n __glibcxx_function_requires(_ForwardIteratorConcept<_ForwardIterator>)\n@@ -5691,7 +5684,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n __glibcxx_requires_irreflexive(__first, __last);\n \n return _GLIBCXX_STD_A::__min_element(__first, __last,\n-\t\t\t\t__gnu_cxx::__ops::__iter_less_iter());\n+\t\t\t\t\t __gnu_cxx::__ops::less());\n }\n \n /**\n@@ -5717,8 +5710,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n __glibcxx_requires_valid_range(__first, __last);\n __glibcxx_requires_irreflexive_pred(__first, __last, __comp);\n \n- return _GLIBCXX_STD_A::__min_element(__first, __last,\n-\t\t\t\t__gnu_cxx::__ops::__iter_comp_iter(__comp));\n+ return _GLIBCXX_STD_A::__min_element(__first, __last, __comp);\n }\n \n template<typename _ForwardIterator, typename _Compare>\n@@ -5730,7 +5722,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n if (__first == __last) return __first;\n _ForwardIterator __result = __first;\n while (++__first != __last)\n-\tif (__comp(__result, __first))\n+\tif (__comp(*__result, *__first))\n \t __result = __first;\n return __result;\n }\n@@ -5755,7 +5747,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n __glibcxx_requires_irreflexive(__first, __last);\n \n return _GLIBCXX_STD_A::__max_element(__first, __last,\n-\t\t\t\t__gnu_cxx::__ops::__iter_less_iter());\n+\t\t\t\t\t __gnu_cxx::__ops::less());\n }\n \n /**\n@@ -5781,8 +5773,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n __glibcxx_requires_valid_range(__first, __last);\n __glibcxx_requires_irreflexive_pred(__first, __last, __comp);\n \n- return _GLIBCXX_STD_A::__max_element(__first, __last,\n-\t\t\t\t__gnu_cxx::__ops::__iter_comp_iter(__comp));\n+ return _GLIBCXX_STD_A::__max_element(__first, __last, __comp);\n }\n \n #if __cplusplus >= 201103L\n@@ -5794,7 +5785,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n {\n __glibcxx_requires_irreflexive(__l.begin(), __l.end());\n return *_GLIBCXX_STD_A::__min_element(__l.begin(), __l.end(),\n-\t __gnu_cxx::__ops::__iter_less_iter());\n+\t\t\t\t\t __gnu_cxx::__ops::less());\n }\n \n template<typename _Tp, typename _Compare>\n@@ -5803,8 +5794,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n min(initializer_list<_Tp> __l, _Compare __comp)\n {\n __glibcxx_requires_irreflexive_pred(__l.begin(), __l.end(), __comp);\n- return *_GLIBCXX_STD_A::__min_element(__l.begin(), __l.end(),\n-\t __gnu_cxx::__ops::__iter_comp_iter(__comp));\n+ return *_GLIBCXX_STD_A::__min_element(__l.begin(), __l.end(), __comp);\n }\n \n template<typename _Tp>\n@@ -5814,7 +5804,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n {\n __glibcxx_requires_irreflexive(__l.begin(), __l.end());\n return *_GLIBCXX_STD_A::__max_element(__l.begin(), __l.end(),\n-\t __gnu_cxx::__ops::__iter_less_iter());\n+\t\t\t\t\t __gnu_cxx::__ops::less());\n }\n \n template<typename _Tp, typename _Compare>\n@@ -5823,8 +5813,7 @@ _GLIBCXX_BEGIN_NAMESPACE_ALGO\n max(initializer_list<_Tp> __l, _Compare __comp)\n {\n __glibcxx_requires_irreflexive_pred(__l.begin(), __l.end(), __comp);\n- return *_GLIBCXX_STD_A::__max_element(__l.begin(), __l.end(),\n-\t __gnu_cxx::__ops::__iter_comp_iter(__comp));\n+ return *_GLIBCXX_STD_A::__max_element(__l.begin(), __l.end(), __comp);\n }\n #endif // C++11\n \ndiff --git a/libstdc++-v3/include/bits/stl_function.h b/libstdc++-v3/include/bits/stl_function.h\nindex 136fd01c9847..ff3f8f4c6e79 100644\n--- a/libstdc++-v3/include/bits/stl_function.h\n+++ b/libstdc++-v3/include/bits/stl_function.h\n@@ -762,6 +762,58 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n \t is_convertible<_Tp, const volatile void*>,\n \t is_convertible<_Up, const volatile void*>>;\n };\n+#else // < C++14\n+\n+ // We need less<void> and equal_to<void> for <bits/predefined_ops.h>\n+\n+ template<>\n+ struct equal_to<void>\n+ {\n+#ifdef __cpp_rvalue_references\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(_Tp&& __t, _Up&& __u) const\n+\t{ return __t == __u; }\n+#else // C++98\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(_Tp& __t, _Up& __u) const { return __t == __u; }\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(const _Tp& __t, _Up& __u) const { return __t == __u; }\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(_Tp& __t, const _Up& __u) const { return __t == __u; }\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(const _Tp& __t, const _Up& __u) const { return __t == __u; }\n+#endif\n+ };\n+\n+ template<>\n+ struct less<void>\n+ {\n+#ifdef __cpp_rvalue_references\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(_Tp&& __t, _Up&& __u) const\n+\t{ return __t < __u; }\n+#else // C++98\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(_Tp& __t, _Up& __u) const { return __t < __u; }\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(const _Tp& __t, _Up& __u) const { return __t < __u; }\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(_Tp& __t, const _Up& __u) const { return __t < __u; }\n+ template<typename _Tp, typename _Up>\n+\tbool\n+\toperator()(const _Tp& __t, const _Up& __u) const { return __t < __u; }\n+#endif\n+ };\n+\n #endif // __glibcxx_transparent_operators\n /** @} */\n \n", "prefixes": [ "v1", "01/12" ] }