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{ "id": 2226258, "url": "http://patchwork.ozlabs.org/api/covers/2226258/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/cover/bmm.hhubic1gpg.gcc.gcc-TEST.redi.24.1.0@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.hhubic1gpg.gcc.gcc-TEST.redi.24.1.0@forge-stage.sourceware.org>", "list_archive_url": null, "date": "2026-04-22T10:35:07", "name": "[v1,0/1] libstdc++: Make equal and is_permutation short-circuit (LWG 3560)", "submitter": { "id": 93210, "url": "http://patchwork.ozlabs.org/api/people/93210/?format=api", "name": "Jonathan Wakely via Sourceware Forge", "email": "forge-bot+redi@forge-stage.sourceware.org" }, "mbox": "http://patchwork.ozlabs.org/project/gcc/cover/bmm.hhubic1gpg.gcc.gcc-TEST.redi.24.1.0@forge-stage.sourceware.org/mbox/", "series": [ { "id": 500978, "url": "http://patchwork.ozlabs.org/api/series/500978/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=500978", "date": "2026-04-22T10:35:07", "name": "libstdc++: Make equal and is_permutation short-circuit (LWG 3560)", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500978/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2226258/comments/", "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" ], "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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Wed, 22 Apr 2026 10:36:00 +0000 (GMT)", "from forge-stage.sourceware.org (localhost [IPv6:::1])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange x25519 server-signature ECDSA (prime256v1) server-digest SHA256)\n (No client certificate requested)\n by forge-stage.sourceware.org (Postfix) with ESMTPS id 9593442B45\n for <gcc-patches@gcc.gnu.org>; Wed, 22 Apr 2026 10:36:00 +0000 (UTC)" ], "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 sourceware.org 8D68942FA79A", "OpenDKIM Filter v2.11.0 sourceware.org B9F6B4362246" ], "DMARC-Filter": "OpenDMARC Filter v1.4.2 sourceware.org B9F6B4362246", "ARC-Filter": "OpenARC Filter v1.0.0 sourceware.org B9F6B4362246", "ARC-Seal": "i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1776854160; cv=none;\n b=gIAUQ52OWAmVQteU4Cz7gHMC4o8BwjaA6Kxvop7BPVOdywa70xAv5AuvIHxad41gSmA7hpFPoS2XetQilk1bOknOuMM5szq2SuBD/UCmqHLlMVzpvk7lVRfGeoA8/8W40B9RNE+zRmQ1tgDHPaPiw6rZrQ+tyawxZWm2ETcBghg=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=sourceware.org; s=key;\n t=1776854160; c=relaxed/simple;\n bh=Ettiq2YXiQKei2x/ZmQ2sVhuntQvl+oZ9OwSb7xfj0c=;\n h=From:Date:Subject:To:Message-ID;\n b=WBU5DGJ+zYT1Qe8Ozs3cvoBse2DkkvxlpyWc2e/Fcs0LzUuNHIZeQ10Iteb/FnrwG2uuOzVP2XYYiENpobMq/snaeNq+WEN4+deAawHfsA8s2IGiwU4Vo+XYsk+moSSPaGr+qH//6DoKWPGft38xqPQ4vsWINh3BREW9pUjt7+A=", "ARC-Authentication-Results": "i=1; server2.sourceware.org", "From": "Jonathan Wakely via Sourceware Forge\n <forge-bot+redi@forge-stage.sourceware.org>", "Date": "Wed, 22 Apr 2026 10:35:07 +0000", "Subject": "[PATCH v1 0/1] libstdc++: Make equal and is_permutation short-circuit\n (LWG 3560)", "To": "gcc-patches mailing list <gcc-patches@gcc.gnu.org>", "Message-ID": "\n <bmm.hhubic1gpg.gcc.gcc-TEST.redi.24.1.0@forge-stage.sourceware.org>", "X-Mailer": "batrachomyomachia", "X-Requested-Reviewer": "ppalka", "X-Pull-Request-Organization": "gcc", "X-Pull-Request-Repository": "gcc-TEST", "X-Pull-Request": "https://forge.sourceware.org/gcc/gcc-TEST/pulls/24", "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>, redi@gcc.gnu.org", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Hi gcc-patches mailing list,\nJonathan Wakely via Sourceware Forge <forge-bot+redi@forge-stage.sourceware.org> has requested that the following forgejo pull request\nbe published on the mailing list.\n\nCreated on: 2024-11-14 17:12:00+00:00\nLatest update: 2025-08-13 03:25:18+00:00\nChanges: 0 changed files, 0 additions, 0 deletions\nHead revision: redi/gcc ref refs/pull/24/head commit 4116ef62cffdfd7b2e7b5868c2a5bd52addc8b92\nBase revision: gcc/gcc-TEST ref trunk commit 4a3a0be34f723df192361e43bb48b9292dfe3a54 r15-5289-g4a3a0be34f723d\nMerge base: 4a3a0be34f723df192361e43bb48b9292dfe3a54\nFull diff url: https://forge.sourceware.org/gcc/gcc-TEST/pulls/24.diff\nDiscussion: https://forge.sourceware.org/gcc/gcc-TEST/pulls/24\nRequested Reviewers: ppalka\n\nWe already implement short-circuiting for random access iterators, but\nwe also need to do so for `ranges::equal` and `ranges::is_permutation` when\ngiven sized ranges that are not random access ranges (e.g. `std::list`).\n\n```\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/ranges_algo.h (__is_permutation_fn::operator()):\n\tShort-circuit for sized ranges with different sizes, as per LWG\n\t3560.\n\t* include/bits/ranges_algobase.h (__equal_fn::operator()):\n\tLikewise.\n\t* include/bits/stl_algo.h (__is_permutation): Use if-constexpr\n\tfor random access iterator branches.\n\t* include/bits/stl_algobase.h (__equal4): Likewise.\n\t* testsuite/25_algorithms/equal/lwg3560.cc: New test.\n\t* testsuite/25_algorithms/is_permutation/lwg3560.cc: New test.\n```\n\n\nChanged files:\n- A: libstdc++-v3/testsuite/25_algorithms/equal/lwg3560.cc\n- A: libstdc++-v3/testsuite/25_algorithms/is_permutation/lwg3560.cc\n- M: libstdc++-v3/include/bits/ranges_algo.h\n- M: libstdc++-v3/include/bits/ranges_algobase.h\n- M: libstdc++-v3/include/bits/stl_algo.h\n- M: libstdc++-v3/include/bits/stl_algobase.h\n\n\nJonathan Wakely (1):\n libstdc++: Make equal and is_permutation short-circuit (LWG 3560)\n\n libstdc++-v3/include/bits/ranges_algo.h | 7 +++\n libstdc++-v3/include/bits/ranges_algobase.h | 7 +++\n libstdc++-v3/include/bits/stl_algo.h | 13 ++---\n libstdc++-v3/include/bits/stl_algobase.h | 44 ++++++++--------\n .../testsuite/25_algorithms/equal/lwg3560.cc | 49 ++++++++++++++++++\n .../25_algorithms/is_permutation/lwg3560.cc | 51 +++++++++++++++++++\n 6 files changed, 145 insertions(+), 26 deletions(-)\n create mode 100644 libstdc++-v3/testsuite/25_algorithms/equal/lwg3560.cc\n create mode 100644 libstdc++-v3/testsuite/25_algorithms/is_permutation/lwg3560.cc" }