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GET /api/1.2/patches/2222811/?format=api
{ "id": 2222811, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2222811/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/patch/20260413190449.109479-1-ncm@cantrip.org/", "project": { "id": 17, "url": "http://patchwork.ozlabs.org/api/1.2/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": "<20260413190449.109479-1-ncm@cantrip.org>", "list_archive_url": null, "date": "2026-04-13T19:00:18", "name": "libstdc++: Small allocator fixes", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c2ac91cbc6b9dfa37819b16d666753182da646cb", "submitter": { "id": 90892, "url": "http://patchwork.ozlabs.org/api/1.2/people/90892/?format=api", "name": "Nathan Myers", "email": "ncm@cantrip.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/gcc/patch/20260413190449.109479-1-ncm@cantrip.org/mbox/", "series": [ { "id": 499740, "url": "http://patchwork.ozlabs.org/api/1.2/series/499740/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=499740", "date": "2026-04-13T19:00:18", "name": "libstdc++: Small allocator fixes", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499740/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222811/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222811/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" ], "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=2620:52:6:3111::32; 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a=rsa-sha256; d=sourceware.org; s=key; t=1776107097; cv=none;\n b=iMfZRrcCy7kOGIRrD+WA0yoBPK8wm6mnq45SYEcEoc3HArsGigY2KzILUaOEsv6bf13tgXbXAiVaJrSmM6QNxiNfCeKwTc8s93FHkZjdLd3e+q667YmCufjrSNnxQu2DF6io5by5PiNUKEDDnaT3A9WUwP8txOgt3dkCHMVSjCs=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=sourceware.org; s=key;\n t=1776107097; c=relaxed/simple;\n bh=Y1T+V0BMaK6NK2Z/d4vvYWJ+c4SSPA0otL+bDxjOVTI=;\n h=From:To:Subject:Date:Message-ID:MIME-Version;\n b=VOrcRJuiDm5L+GHuXlNv3y2AYvkZenUbRV4X40V303EwNia+VAGKGrrzwtjcFGy2STB4+PLrqJddTW5O6OEdcfS5O3/xQdjihUnlgtQe/u17WkmsvTcT7F6l3q0XA6ubYxLR0TFFJTH+azk6gwVI+rpx7nfkC0OWxQJ1q89ilZ8=", "ARC-Authentication-Results": "i=1; server2.sourceware.org", "X-MC-Unique": "OfstzLKcPTGyBmjccQOq8g-1", "X-Mimecast-MFC-AGG-ID": "OfstzLKcPTGyBmjccQOq8g_1776107092", "From": "Nathan Myers <ncm@cantrip.org>", "To": "gcc-patches@gcc.gnu.org,\n\tlibstdc++@gcc.gnu.org", "Subject": "[PATCH] libstdc++: Small allocator fixes", "Date": "Mon, 13 Apr 2026 15:00:18 -0400", "Message-ID": "<20260413190449.109479-1-ncm@cantrip.org>", "MIME-Version": "1.0", "X-Scanned-By": "MIMEDefang 3.0 on 10.30.177.17", "X-Mimecast-Spam-Score": "0", "X-Mimecast-MFC-PROC-ID": "DsPe3yjVKcC-ql-pON9jVfNvpOhIJhlDf11YPeGQQb8_1776107092", "X-Mimecast-Originator": "cantrip.org", "Content-Transfer-Encoding": "quoted-printable", "content-type": "text/plain; charset=WINDOWS-1252; x-default=true", "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>", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Since 2022, the constexpr branch of std::allocator::allocate(n)\nhas asked for the wrong size. More recently, allocator_traits\nallocate_at_least has taken its allocator argument by value,\nincorrectly.\n\nlibstdc++-v3/ChangeLog:\n\t* include/bits/allocator.h (allocate): When constexpr, allocate bytes.\n\t* include/bits/alloc_traits.h (allocate_at_least): Take allocator\n\targument by reference, per spec.\n---\n libstdc++-v3/include/bits/alloc_traits.h | 2 +-\n libstdc++-v3/include/bits/allocator.h | 2 +-\n 2 files changed, 2 insertions(+), 2 deletions(-)", "diff": "diff --git a/libstdc++-v3/include/bits/alloc_traits.h b/libstdc++-v3/include/bits/alloc_traits.h\nindex 2be8ed561d4..e4e0f1608de 100644\n--- a/libstdc++-v3/include/bits/alloc_traits.h\n+++ b/libstdc++-v3/include/bits/alloc_traits.h\n@@ -670,7 +670,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n * Returns `a.allocate_at_least(n)`.\n */\n [[nodiscard]] static constexpr auto\n- allocate_at_least(allocator_type __a, size_type __n)\n+ allocate_at_least(allocator_type& __a, size_type __n)\n \t-> allocation_result<pointer, size_type>\n { return __a.allocate_at_least(__n); }\n #endif\ndiff --git a/libstdc++-v3/include/bits/allocator.h b/libstdc++-v3/include/bits/allocator.h\nindex 9c22c805ebe..ae735605f67 100644\n--- a/libstdc++-v3/include/bits/allocator.h\n+++ b/libstdc++-v3/include/bits/allocator.h\n@@ -200,7 +200,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION\n \t {\n \t if (__builtin_mul_overflow(__n, sizeof(_Tp), &__n))\n \t std::__throw_bad_array_new_length();\n-\t return static_cast<_Tp*>(::operator new(__n));\n+\t return static_cast<_Tp*>(::operator new(__n * sizeof(_Tp)));\n \t }\n \n \treturn __allocator_base<_Tp>::allocate(__n, 0);\n", "prefixes": [] }