From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from qproxy4-pub.mail.unifiedlayer.com (qproxy4-pub.mail.unifiedlayer.com [66.147.248.250]) by sourceware.org (Postfix) with ESMTPS id 815483858434 for ; Tue, 31 Jan 2023 17:57:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 815483858434 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=tromey.com Received: from outbound-ss-820.bluehost.com (outbound-ss-820.bluehost.com [69.89.24.241]) by qproxy4.mail.unifiedlayer.com (Postfix) with ESMTP id A9E2E80270F2 for ; Tue, 31 Jan 2023 17:35:53 +0000 (UTC) Received: from cmgw14.mail.unifiedlayer.com (unknown [10.0.90.129]) by progateway2.mail.pro1.eigbox.com (Postfix) with ESMTP id 99E3D10049778 for ; Tue, 31 Jan 2023 17:35:23 +0000 (UTC) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with ESMTP id MuXTp5pbAc5SPMuXTphdqe; Tue, 31 Jan 2023 17:35:23 +0000 X-Authority-Reason: nr=8 X-Authority-Analysis: v=2.4 cv=e7bD9Yl/ c=1 sm=1 tr=0 ts=63d9515b a=ApxJNpeYhEAb1aAlGBBbmA==:117 a=ApxJNpeYhEAb1aAlGBBbmA==:17 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=RvmDmJFTN0MA:10:nop_rcvd_month_year a=Qbun_eYptAEA:10:endurance_base64_authed_username_1 a=CCpqsmhAAAAA:8 a=_AVu5lQq6NHUcfQsjHYA:9 a=ul9cdbp4aOFLsgKbc677:22 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:References :Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=+lfIHyZXH+hfaC1iCXoJatvwApA2x7XU3R9x6Qfp56I=; b=SJrN75KrHLIufzyLk3WLwFH46u dkFcv6gYRovz9T2ISe2XMEauaJgInlx9CQMmvRzxGaGtxfoqE+xMOOkUa3//NHtk2O6qN08YJ4mYM 9CAsUEro1+f4PHsctbjCvRFEa; Received: from 71-211-157-143.hlrn.qwest.net ([71.211.157.143]:56094 helo=murgatroyd) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1pMuXT-001X5X-CK; Tue, 31 Jan 2023 10:35:23 -0700 From: Tom Tromey To: Simon Marchi via Gdb-patches Cc: Simon Marchi Subject: Re: [PATCH 1/2] gdbsupport: allow passing nullptr to checked_static_cast References: <20230131155721.21847-1-simon.marchi@efficios.com> X-Attribution: Tom Date: Tue, 31 Jan 2023 10:35:19 -0700 In-Reply-To: <20230131155721.21847-1-simon.marchi@efficios.com> (Simon Marchi via Gdb-patches's message of "Tue, 31 Jan 2023 10:57:20 -0500") Message-ID: <871qnamwtk.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 71.211.157.143 X-Source-L: No X-Exim-ID: 1pMuXT-001X5X-CK X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: 71-211-157-143.hlrn.qwest.net (murgatroyd) [71.211.157.143]:56094 X-Source-Auth: tom+tromey.com X-Email-Count: 5 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-Spam-Status: No, score=-3021.0 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,JMQ_SPF_NEUTRAL,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: >>>>> "Simon" == Simon Marchi via Gdb-patches writes: Simon> Both static_cast and dynamic_cast handle nullptr (they return nullptr), Simon> so I think checked_static_cast should too. This will allow doing a null Simon> check after a checked_static_cast: Thanks, I think this is a good idea. Tom