From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B243FC4363D for ; Tue, 20 Oct 2020 14:23:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6181622244 for ; Tue, 20 Oct 2020 14:23:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="BKGocP8+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2408040AbgJTOXp (ORCPT ); Tue, 20 Oct 2020 10:23:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407989AbgJTOXo (ORCPT ); Tue, 20 Oct 2020 10:23:44 -0400 Received: from mail-wm1-x342.google.com (mail-wm1-x342.google.com [IPv6:2a00:1450:4864:20::342]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A344C0613CE for ; Tue, 20 Oct 2020 07:23:44 -0700 (PDT) Received: by mail-wm1-x342.google.com with SMTP id b127so2123013wmb.3 for ; Tue, 20 Oct 2020 07:23:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=hgt+bR4Tevd5sxU7yCKi7CgfsprPB04M5XYVo9EqDJQ=; b=BKGocP8+0lDLbg6ArozaTauLg7LMeGZ3u5/Mr74DnVx+7EiORE/uBZb5y7zr8LJfIq F/jkzHJt6ZRyqbtqCbqtgoYTlRX5rBjAJhdRURdBRFotIPdo0yNB/AGLOi5CNZBiLhzI m6+oIXNKNv7egFaFRygd7hxsDyhuwM9rK2g7Uu1iIhnd8qVrIrMSyzBEsMvpSmb9YIsW BV0Aa9TDR6MoaE02ehA6bBwe40NbDfTGrXSXJ33M3ChTdlcquvOByaIGswbMnRlhHODa BsJl3KgJOp3woE8yvLRMK4abnHi0HtlA6px0XOky37fCI6A45dvP/ERMSwo2J6PQOBaJ dbFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=hgt+bR4Tevd5sxU7yCKi7CgfsprPB04M5XYVo9EqDJQ=; b=okHe2/AeE3xzzwAOZepK8Z8s38WJKMqjwe65d8c0tGdAE0y4BWGtAlcdqyG37DgwQj VeplirH4QTwiWlqfHy6hC1CHNKIELq8IekjTecRCr5bnUZnk9W4nHJ/mDHBN3TZ/6Gm6 gcardSxDPGGgFhUnMC9Z9T8bUN2FnokPliY2RLxdnvoFEjOquyqPl8b5f0RZ/9eWEyKt j+P1UVJR2Zuz8l7SgXlgjpePjd1RMgL1TpDKj5vAHQSTnawKzDlWXjr8ZZGdvocfN2+J GtkDMJLHY/jo9oMrCTFtaWqvjROtNMOKxFxelYisfvnZ6u6T5DfhYZUYjiaGnHcrF54/ 7NlA== X-Gm-Message-State: AOAM533EZqTyR5bls1t/thgxROS9GYcoZrk4DLo1Op0FclMI+qzmREsm Rh7al7XcaEPyGlgs/kzc6A4= X-Google-Smtp-Source: ABdhPJxvXTckkuTNsrVQmsKdjWUfM5hyfWrDPbCE3PJJSV2A8cvuqCTn50aSj10Z5KklEh8uhyAYoQ== X-Received: by 2002:a1c:b402:: with SMTP id d2mr3398980wmf.128.1603203823422; Tue, 20 Oct 2020 07:23:43 -0700 (PDT) Received: from localhost.localdomain ([170.253.60.68]) by smtp.googlemail.com with ESMTPSA id s19sm3422153wmc.0.2020.10.20.07.23.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Oct 2020 07:23:42 -0700 (PDT) From: Alejandro Colomar To: mtk.manpages@gmail.com Cc: Alejandro Colomar , linux-man@vger.kernel.org, libc-alpha@sourceware.org Subject: [PATCH 21/22] list.3: BUGS: Note LIST_FOREACH() limitations Date: Tue, 20 Oct 2020 16:21:46 +0200 Message-Id: <20201020142146.61837-22-colomar.6.4.3@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201020142146.61837-1-colomar.6.4.3@gmail.com> References: <20201020142146.61837-1-colomar.6.4.3@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Signed-off-by: Alejandro Colomar --- man3/list.3 | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/man3/list.3 b/man3/list.3 index bb64fff92..4aec14cc8 100644 --- a/man3/list.3 +++ b/man3/list.3 @@ -261,6 +261,20 @@ Not in POSIX.1, POSIX.1-2001 or POSIX.1-2008. Present on the BSDs (LIST macros first appeared in 4.4BSD). .SH BUGS +The macro +.BR LIST_FOREACH () +doesn't allow +.I var +to be removed or freed within the loop, +as it would interfere with the traversal. +The macro +.BR LIST_FOREACH_SAFE (), +which is not present in glibc, +solves this bug by +allowing to both remove +.I var +as well as free it from within the loop safely +without interfering with the traversal. .SH EXAMPLES .EX #include -- 2.28.0