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 [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id E8BA63858297 for ; Fri, 29 Jul 2022 16:34:55 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org E8BA63858297 Received: from mail-qk1-f199.google.com (mail-qk1-f199.google.com [209.85.222.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-57-CfxpbskBN3q24e0DFjiURw-1; Fri, 29 Jul 2022 12:34:54 -0400 X-MC-Unique: CfxpbskBN3q24e0DFjiURw-1 Received: by mail-qk1-f199.google.com with SMTP id j16-20020a05620a411000b006b5fb8e5d95so3946646qko.19 for ; Fri, 29 Jul 2022 09:34:54 -0700 (PDT) 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:from:to:references:organization:in-reply-to :content-transfer-encoding; bh=YNiUqjDXOOixyR58aC28Yg7YevYkzrrOMlMQD8T9RE4=; b=iv4BVjwJMcDKhC8uUSMgWqJMvAkg7eyXWuguuE/u8KeA5EjEdCDGt7GZLVwRjCSRfM SBJ6EDDiG2EjHXGFYqfsdtFUfDFo/MGFCKotyKbN9LrpjAeGSwKr4joS5ZvwQQBW4K5/ ga8Mnh4Mv9XhodTpjuKDctbYcGk7keNyMhPEpdy2+OwCpfgHc4A+OYBW6L98+E3Ut6sM paelOlTFfX+ruMfFaEePkhIKM7DNZr8WNSt2ecn4bkipwqMSog66glrI1uZUMaObdbC6 PT5xu/7Dl/JZC18+6DNl3t8ae3EdxthLdxD6/HYznG5sgWkaKk9xo8EoWADV9FSTu1M3 P9ww== X-Gm-Message-State: ACgBeo3wa1WpV2OrKJX40dR7pBVv9mA+Hx+Dj3MA5XjCQgjO94ChGibe ZvoHefqwvY11VnfyJI053ycT0SH9M7ksWM8lv/GFBnj9G416bk56AT+7jAWozbDfin5OlgUTs8V fzkthJ3p/Pd7XzYQX0pimu9czaD1JWXk5Sugrdrwfss6Js9uHf9SxcScgFyiRphqIG80pEw== X-Received: by 2002:a05:6214:1ccf:b0:470:85e2:dc3e with SMTP id g15-20020a0562141ccf00b0047085e2dc3emr4149973qvd.52.1659112493456; Fri, 29 Jul 2022 09:34:53 -0700 (PDT) X-Google-Smtp-Source: AA6agR774wlKIf7NT3gYtfBDxJlQH3/w204RcIP6rgyM9Cq2pvBdwBfs+8jGz13VguBgMFNwHN8idg== X-Received: by 2002:a05:6214:1ccf:b0:470:85e2:dc3e with SMTP id g15-20020a0562141ccf00b0047085e2dc3emr4149950qvd.52.1659112493155; Fri, 29 Jul 2022 09:34:53 -0700 (PDT) Received: from [192.168.0.241] (192-0-145-146.cpe.teksavvy.com. [192.0.145.146]) by smtp.gmail.com with ESMTPSA id i21-20020a05620a405500b006b5f371a19esm3132913qko.111.2022.07.29.09.34.51 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 29 Jul 2022 09:34:52 -0700 (PDT) Message-ID: <67d675fd-870b-37c1-3a4e-d3ecfc391b69@redhat.com> Date: Fri, 29 Jul 2022 12:34:51 -0400 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: glibc 2.36 build failure on Fedora 36 with gcc 12 (-Werror=use-after-free) From: Carlos O'Donell To: libc-alpha References: 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: 8bit X-Spam-Status: No, score=-7.5 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, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) 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: Fri, 29 Jul 2022 16:34:57 -0000 On 7/29/22 11:26, Carlos O'Donell wrote: > Just posting here for the record that I see a glibc 2.36 build failure > with Fedora 36 and gcc 12. > > localealias.c: In function ‘read_alias_file’: > localealias.c:335:56: error: pointer may be used after ‘realloc’ [-Werror=use-after-free] > 335 | map[i].alias += new_pool - string_space; > | ~~~~~~~~~^~~~~~~~~~~~~~ > localealias.c:325:49: note: call to ‘realloc’ here > 325 | char *new_pool = (char *) realloc (string_space, new_size); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > cc1: all warnings being treated as errors > > I'm going to review this quickly before we make the glibc release. This was an issue with my automation. The build is clean with gcc 12.1. -- Cheers, Carlos.