From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.9]) by sourceware.org (Postfix) with ESMTPS id E2E05385B190; Mon, 28 Nov 2022 14:29:39 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org E2E05385B190 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=linux-m68k.org Authentication-Results: sourceware.org; spf=none smtp.mailfrom=linux-m68k.org Received: from frontend03.mail.m-online.net (unknown [192.168.6.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4NLSXf5C08z1r1NF; Mon, 28 Nov 2022 15:29:38 +0100 (CET) Received: from localhost (dynscan3.mnet-online.de [192.168.6.84]) by mail.m-online.net (Postfix) with ESMTP id 4NLSXf1FBzz1qqlR; Mon, 28 Nov 2022 15:29:38 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan3.mail.m-online.net [192.168.6.84]) (amavisd-new, port 10024) with ESMTP id 4slGX__Ff8-0; Mon, 28 Nov 2022 15:29:37 +0100 (CET) X-Auth-Info: N4BNdHK97qCOs3pQiIBwn0dFXkum+4khE8qZ6fojNSkLO4onLShbHbKXeSgd1/VO Received: from hawking (unknown [81.95.8.244]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Mon, 28 Nov 2022 15:29:37 +0100 (CET) From: Andreas Schwab To: Siddhesh Poyarekar via Libc-alpha Cc: Siddhesh Poyarekar Subject: Re: [PATCH] realloc: Return unchanged if request is within usable size References: <20221125200948.2399996-1-siddhesh@sourceware.org> <87v8n222fe.fsf@igel.home> X-Yow: Sometimes a TABOO is just a good CIGAR -- or a rare STEAK -- or a dry MARTINI! Date: Mon, 28 Nov 2022 15:29:36 +0100 In-Reply-To: (Siddhesh Poyarekar via Libc-alpha's message of "Mon, 28 Nov 2022 09:23:08 -0500") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Status: No, score=-11.5 required=5.0 tests=BAYES_00,KAM_DMARC_STATUS,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,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: On Nov 28 2022, Siddhesh Poyarekar via Libc-alpha wrote: > Hmm, I suppose something like this then? > > for (...) > { > ... > volatile uintptr_t oldp = p; > void *new_p = realloc (p, newsz) > if (new_p != oldp) > ... You'll need some casts, but I don't think the volatile is needed. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."