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{ "id": 2226645, "url": "http://patchwork.ozlabs.org/api/covers/2226645/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/cover/bmm.hhundg5lhq.gcc.gcc-TEST.peppe.35.1.0@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.hhundg5lhq.gcc.gcc-TEST.peppe.35.1.0@forge-stage.sourceware.org>", "list_archive_url": null, "date": "2026-04-22T17:45:33", "name": "[v1,0/1] WIP: libstdc++: fix compile error when converting std::weak_ptr<T[]>", "submitter": { "id": 93222, "url": "http://patchwork.ozlabs.org/api/people/93222/?format=api", "name": "peppe via Sourceware Forge", "email": "forge-bot+peppe@forge-stage.sourceware.org" }, "mbox": "http://patchwork.ozlabs.org/project/gcc/cover/bmm.hhundg5lhq.gcc.gcc-TEST.peppe.35.1.0@forge-stage.sourceware.org/mbox/", "series": [ { "id": 501055, "url": "http://patchwork.ozlabs.org/api/series/501055/?format=api", "web_url": "http://patchwork.ozlabs.org/project/gcc/list/?series=501055", "date": "2026-04-22T17:45:34", "name": "WIP: libstdc++: fix compile error when converting std::weak_ptr<T[]>", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/501055/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2226645/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=2620:52:6:3111::32; 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Wed, 22 Apr 2026 17:46:24 +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 7704B42BE9\n for <gcc-patches@gcc.gnu.org>; Wed, 22 Apr 2026 17:46:24 +0000 (UTC)" ], "DKIM-Filter": [ "OpenDKIM Filter v2.11.0 sourceware.org 206BD4BB58A7", "OpenDKIM Filter v2.11.0 sourceware.org 9B58F4BAD159" ], "DMARC-Filter": "OpenDMARC Filter v1.4.2 sourceware.org 9B58F4BAD159", "ARC-Filter": "OpenARC Filter v1.0.0 sourceware.org 9B58F4BAD159", "ARC-Seal": "i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1776879984; cv=none;\n b=xqG1gRLJNAzL/JMrlZNM6ME7p9B0fvC5RJILpkxIJH4l3AHpZFT7nG0yous+kfN/RLJvXaXF8GODs+3cCfTEUFq2F2VhbLL0aSjqMipEHbfAgwWUaFmlrF2sFq/5K0py5HU3AyCjqPoJD3lFEWmWiSKtWNCsYyoS6q2zHkKLiQg=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=sourceware.org; s=key;\n t=1776879984; c=relaxed/simple;\n bh=17an9tu3IqIklnYjF67cG7JUw4R6v3gSofYpQb8rA1o=;\n h=From:Date:Subject:To:Message-ID;\n b=mW0Wne7HsVRSXD3rik+E7JtJpsNfx+mITa9pu/Dd6lRNg6t/bSKJsRtQ93f+2zLVESlzjKYEfVmZQ2OJuXfsMA6bJ59Pd5obDCBDwtCDfHJRJg1IRTXRR9A9B9toSHTVkGuNHhgyVQ7Au+fywH2ZthapUtS4Wb1xvzeAPnd8QiQ=", "ARC-Authentication-Results": "i=1; server2.sourceware.org", "From": "peppe via Sourceware Forge <forge-bot+peppe@forge-stage.sourceware.org>", "Date": "Wed, 22 Apr 2026 17:45:33 +0000", "Subject": "[PATCH v1 0/1] WIP: libstdc++: fix compile error when converting\n std::weak_ptr<T[]>", "To": "gcc-patches mailing list <gcc-patches@gcc.gnu.org>", "Message-ID": "\n <bmm.hhundg5lhq.gcc.gcc-TEST.peppe.35.1.0@forge-stage.sourceware.org>", "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/35", "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 peppe@noreply.localhost", "Errors-To": "gcc-patches-bounces~incoming=patchwork.ozlabs.org@gcc.gnu.org" }, "content": "Hi gcc-patches mailing list,\npeppe via Sourceware Forge <forge-bot+peppe@forge-stage.sourceware.org> has requested that the following forgejo pull request\nbe published on the mailing list.\n\nCreated on: 2025-03-06 10:06:37+00:00\nLatest update: 2025-08-13 03:36:59+00:00\nChanges: 0 changed files, 0 additions, 0 deletions\nHead revision: peppe/gcc-TEST ref refs/pull/35/head commit 5f1498adeac4466e9edf60fdc708d8fed0d6b7ab\nBase revision: gcc/gcc-TEST ref trunk commit 556e25f0e9abc720c940994bd9a1491062933d49 r15-7829-g556e25f0e9abc7\nMerge base: 556e25f0e9abc720c940994bd9a1491062933d49\nFull diff url: https://forge.sourceware.org/gcc/gcc-TEST/pulls/35.diff\nDiscussion: https://forge.sourceware.org/gcc/gcc-TEST/pulls/35\nRequested Reviewers: redi\n\nA std::weak_ptr<T[]> can be converted to a compatible\nstd::weak_ptr<U[]>. This is implemented by having suitable converting\nconstructors to std::weak_ptr which dispatch to the __weak_ptr base\nclass (implementation detail).\n\nIn __weak_ptr<T[]>, lock() is supposed to return a __shared_ptr<T[]>,\nnot a __shared_ptr<element_type> (that is, __shared_ptr<T>).\n\nUnfortunately the return type of lock() and the type of the returned\n__shared_ptr were mismatching and that was causing a compile error: when\nconverting a __weak_ptr<T[]> to a __weak_ptr<U[]> through __weak_ptr's\nconverting constructor, the code calls lock(), and that simply fails to\nbuild.\n\nFix it by removing the usage of element_type inside lock(), and using\n_Tp instead.\n\nNote that std::weak_ptr::lock() itself was already correct; the one in\n__weak_ptr was faulty (and that is the one called by __weak_ptr's\nconverting constructors).\n\n```\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/shared_ptr_base.h (lock): Fixed a compile error\n\twhen calling lock() on a weak_ptr<T[]>, by removing an\n\terroneous usage of element_type from within lock().\n\t* testsuite/20_util/shared_ptr/requirements/explicit_instantiation/1.cc:\n\tAdd more tests for array types.\n\t* testsuite/20_util/weak_ptr/requirements/explicit_instantiation/1.cc:\n\tLikewise.\n\t* testsuite/20_util/shared_ptr/requirements/1.cc: New test.\n\t* testsuite/20_util/weak_ptr/requirements/1.cc: New test.\n```\n\n\nChanged files:\n- A: libstdc++-v3/testsuite/20_util/shared_ptr/requirements/1.cc\n- A: libstdc++-v3/testsuite/20_util/weak_ptr/requirements/1.cc\n- M: libstdc++-v3/include/bits/shared_ptr_base.h\n- M: libstdc++-v3/testsuite/20_util/shared_ptr/requirements/explicit_instantiation/1.cc\n- M: libstdc++-v3/testsuite/20_util/weak_ptr/requirements/explicit_instantiation/1.cc\n\n\nGiuseppe D'Angelo (1):\n libstdc++: fix compile error when converting std::weak_ptr<T[]>\n\n libstdc++-v3/include/bits/shared_ptr_base.h | 2 +-\n .../20_util/shared_ptr/requirements/1.cc | 33 +++++++++++++++++++\n .../requirements/explicit_instantiation/1.cc | 12 +++++++\n .../20_util/weak_ptr/requirements/1.cc | 33 +++++++++++++++++++\n .../requirements/explicit_instantiation/1.cc | 12 +++++++\n 5 files changed, 91 insertions(+), 1 deletion(-)\n create mode 100644 libstdc++-v3/testsuite/20_util/shared_ptr/requirements/1.cc\n create mode 100644 libstdc++-v3/testsuite/20_util/weak_ptr/requirements/1.cc" }