{"id":2226282,"url":"http://patchwork.ozlabs.org/api/covers/2226282/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/cover/bmm.hhubkr2i8k.gcc.gcc-TEST.redi.26.1.0@forge-stage.sourceware.org/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/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,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"","list_archive_url":null,"date":"2026-04-22T10:37:34","name":"[v1,0/1] libstdc++: Add debug assertions to std::list and std::forward_list","submitter":{"id":93210,"url":"http://patchwork.ozlabs.org/api/people/93210/?format=json","name":"Jonathan Wakely via Sourceware Forge","email":"forge-bot+redi@forge-stage.sourceware.org"},"mbox":"http://patchwork.ozlabs.org/project/gcc/cover/bmm.hhubkr2i8k.gcc.gcc-TEST.redi.26.1.0@forge-stage.sourceware.org/mbox/","series":[{"id":500986,"url":"http://patchwork.ozlabs.org/api/series/500986/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=500986","date":"2026-04-22T10:37:34","name":"libstdc++: Add debug assertions to std::list and std::forward_list","version":1,"mbox":"http://patchwork.ozlabs.org/series/500986/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2226282/comments/","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 spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=2620:52:6:3111::32; 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server2.sourceware.org","From":"Jonathan Wakely via Sourceware Forge\n ","Date":"Wed, 22 Apr 2026 10:37:34 +0000","Subject":"[PATCH v1 0/1] libstdc++: Add debug assertions to std::list and\n std::forward_list","To":"gcc-patches mailing list ","Message-ID":"\n ","X-Mailer":"batrachomyomachia","X-Pull-Request-Organization":"gcc","X-Pull-Request-Repository":"gcc-TEST","X-Pull-Request":"https://forge.sourceware.org/gcc/gcc-TEST/pulls/26","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 ","Reply-To":"gcc-patches mailing list , 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 has requested that the following forgejo pull request\nbe published on the mailing list.\n\nCreated on: 2024-11-16 01:02:18+00:00\nLatest update: 2025-08-13 03:25:18+00:00\nChanges: 3 changed files, 26 additions, 2 deletions\nHead revision: redi/gcc ref list-assertions commit 96da5e678a0d3e346fec557485f3e8b770fe56a0\nBase revision: gcc/gcc-TEST ref trunk commit f242f79b8afeec58477e99c44530bd503878c6d5 r15-5326-gf242f79b8afeec\nMerge base: f242f79b8afeec58477e99c44530bd503878c6d5\nFull diff url: https://forge.sourceware.org/gcc/gcc-TEST/pulls/26.diff\nDiscussion: https://forge.sourceware.org/gcc/gcc-TEST/pulls/26\nRequested Reviewers:\n\nWhile working on fancy pointer support for the linked lists I noticed\nthey didn't have any debug assertions. This adds the obvious non-empty\nassertions to front(), back(), pop_front() and pop_back().\n\nFor the pop members, adding an assertion to the underlying function that\nerases a member means it also check erase(end()), which is always\ninvalid, and erase(begin()) on an empty list. For those erase members we\ncan also add a check so that we return without doing anything if the\nassertion is disabled, but would have failed had it been enabled.\n```\nlibstdc++-v3/ChangeLog:\n\n\t* include/bits/forward_list.h (forward_list::front): Add\n\tnon-empty assertions.\n\t* include/bits/forward_list.tcc (_Fwd_list_base::_M_erase_after):\n\tLikewise. Return immediately if argument is invalid.\n\t* include/bits/stl_list.h (list::front, list::back): Add\n\tnon-empty assertions.\n\t(list::_M_erase): Likewise. Return immediately if argument is\n\tinvalid.\n```\n\n\nChanged files:\n- M: libstdc++-v3/include/bits/forward_list.h\n- M: libstdc++-v3/include/bits/forward_list.tcc\n- M: libstdc++-v3/include/bits/stl_list.h\n\n\nJonathan Wakely (1):\n libstdc++: Add debug assertions to std::list and std::forward_list\n\n libstdc++-v3/include/bits/forward_list.h | 3 +++\n libstdc++-v3/include/bits/forward_list.tcc | 6 ++++++\n libstdc++-v3/include/bits/stl_list.h | 19 +++++++++++++++++--\n 3 files changed, 26 insertions(+), 2 deletions(-)"}