From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 7FD3E3857C6E for ; Mon, 31 Jan 2022 15:12:54 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 7FD3E3857C6E Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-110-XBN19758NKGmlSp4oSxkpA-1; Mon, 31 Jan 2022 10:12:51 -0500 X-MC-Unique: XBN19758NKGmlSp4oSxkpA-1 Received: by mail-qk1-f198.google.com with SMTP id q5-20020a05620a0d8500b004738c1b48beso9822540qkl.7 for ; Mon, 31 Jan 2022 07:12:51 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:organization:in-reply-to :content-transfer-encoding; bh=MWHnGXnFSnsvofXABYE4k0nVl0vHG8vqzhMVaKuo5hI=; b=M9aRdDhR6aw70nTfnyXGSBs4Qb421FthvQjsdUlD+dRVyRsSrsn7sXNHjEylQZvHk1 tWUh3ka51Epy1LBVTnh2ZiKKMVXVK1tWsHQvbt9hrhac4WvyGbAbDPc2bHYXo6Xpz45a qKMI3MTR0QDQQQ200TQs7Ke9Sg53N5agoYB4m/od8nEPwBfzOeNIf7nGEFOHNhvivvVB lUh+Qcbs7qFEq6UDh6/lnk6GaUvW32Orc7ynbh8g7VkfxYydY5NnvJfc1LXqsDPXDPDO WUw1WdwZX6jW3hP5w839VBIlDP1gZMwDqu8jlcdon6WN9oz9e5WDQCM24mTafDPZeOKQ 23Jw== X-Gm-Message-State: AOAM530k0s8MnK4sZJuljXzBfUoQYKz7DAMp3jkcSrSUxalOj8V9aBTx 74JAcLBUQq13pWP/+ruj8GXrHbfkHBRccKhjfMr8Vr+OQn2bRg2erdlJawJFsk9W/idoN2gsmuW 7ZBNzfJVNyu8dCacVmpry X-Received: by 2002:a05:620a:15b3:: with SMTP id f19mr13308835qkk.182.1643641971156; Mon, 31 Jan 2022 07:12:51 -0800 (PST) X-Google-Smtp-Source: ABdhPJx0pEa+eOlxonY9wlhdSKbeNywezRMuLQHGWCihbpOmkFtnsrvT8fRjIm2Orj0nn0lzvmAU6Q== X-Received: by 2002:a05:620a:15b3:: with SMTP id f19mr13308819qkk.182.1643641970976; Mon, 31 Jan 2022 07:12:50 -0800 (PST) Received: from [192.168.0.241] (135-23-175-80.cpe.pppoe.ca. [135.23.175.80]) by smtp.gmail.com with ESMTPSA id br35sm3941132qkb.118.2022.01.31.07.12.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 31 Jan 2022 07:12:50 -0800 (PST) Message-ID: <942c6008-05c2-351c-ad35-18b724bbc8f6@redhat.com> Date: Mon, 31 Jan 2022 10:12:49 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.4.0 Subject: Re: [PATCH v3 5/5] avoid -Wuse-after-free [BZ #26779] To: Joseph Myers Cc: libc-alpha@sourceware.org References: <53f20975-a2c9-674d-2a43-b1b323ee545c@gmail.com> <50baa5fb-c1ee-f7dc-b7d6-cf4587782062@gmail.com> <3ad704bb-a061-1dc2-3b6d-8343f70a3c92@gmail.com> <7b1e2fda-b440-ad77-4586-7e73b7c927b0@redhat.com> From: Carlos O'Donell Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-6.0 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 31 Jan 2022 15:12:55 -0000 On 1/28/22 12:51, Joseph Myers wrote: > On Fri, 28 Jan 2022, Carlos O'Donell via Libc-alpha wrote: > >> I'm going to look at these right now. I want clean gcc 12 glibc 2.35 >> results before we release. > > There are also three ICE bugs in GCC 12 preventing glibc from building, so > you won't get fully clean build-many-glibcs.py results with just glibc > fixes. GCC bug 103722 on sh4, bug 104153 on or1k and 104154 on arc (the > last two reported by Jeff based on ICEs building newlib, but the ICEs I > see building glibc are in the same place in the compiler, so probably the > same bugs). Thanks. I just fixed the last -Wuse-after-free bug. The ICEs are compiler-side fixes and I don't think we'd want to work around them in glibc unless the workaround was trivial. I dislike putting -O0 or -O1 in clfags just to build things, but that's what the downstream distributions need to do sometimes :-) -- Cheers, Carlos.