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 9EA0E3858C41 for ; Tue, 7 Nov 2023 11:09:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 9EA0E3858C41 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 9EA0E3858C41 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699355383; cv=none; b=h65xMYzz0C6LV7WqP/KrM8ZtDOo+Ddtz0w5cP1WOhw33w7xOogjTdq1ABg1BAKiTUmi/lrD44HZVFscv8qI2o2RxTBAPs6J7hinqRUA2OAPgL2wPHYvizHrLga+04H21dWzBDHpJf11FeiNeJVG8Vyn6RiQdRfQoH9Q3mqndQWI= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1699355383; c=relaxed/simple; bh=RQWsHyLmYh1t7VqrPE1hRgfeNrziYI1IqJCVkv8zLvU=; h=DKIM-Signature:From:To:Subject:Date:Message-ID:MIME-Version; b=dmJGtWlvt1bCI5so4RaNsofifQYzfCrxeLnHcIz0JRzqyq38KrjsDdYX1TzDf0LjbHyNvHJjxmjWgeJFgPdXEEoZaMm7N4jMd9rJyMfGQmCutVwRQQxZJguyeeJp4on8z+tjI3ra61glWN0Gd80SUYRLGBurSdx42bWGdgI+WeM= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1699355382; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=c/+ds7e/0mDMRPYiqYUgVofpYhD/ADr/rEUlqYcpd+E=; b=Q/1AH6tNYOkZXNnvTXfWFtoGUHD/00heH1sHlMphH+XgDmhv7OYP5NnwoNbsZ8jKAZ7mju 5G4vdp48XAkS9oWOp5BrgZLi+M2pNxowTekwx7tiSo6SYNCHAJppDVFuXPGXqwQ2AGhmRk o2S4eijci+CrZkycWEUiZB6QPcrZruY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-56-S4nk9sSbM9u5mI-8_byfKg-1; Tue, 07 Nov 2023 06:09:28 -0500 X-MC-Unique: S4nk9sSbM9u5mI-8_byfKg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id B34AF85C1AC; Tue, 7 Nov 2023 11:09:27 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.2.16.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CED861C060AE; Tue, 7 Nov 2023 11:09:26 +0000 (UTC) From: Florian Weimer To: Adhemerval Zanella Netto Cc: Andrew Pinski , Cristian =?utf-8?Q?Rodr=C3=ADguez?= , Adhemerval Zanella via Libc-alpha Subject: Re: rustc SIGILL since qsort_r patches References: Date: Tue, 07 Nov 2023 12:09:25 +0100 In-Reply-To: (Adhemerval Zanella Netto's message of "Mon, 6 Nov 2023 11:13:23 -0300") Message-ID: <874jhxizve.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.3 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-4.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: * Adhemerval Zanella Netto: > Just a side note that the quicksort implementation was also used for > size (number of elements times size per element) larger than the > installed system RAM (_SC_PHYS_PAGES / size > _SC_PAGESIZE) or > whether malloc fails. So it is a latent issue, that did not trigger > before by chance. Is it ever beneficial to call the comparison function with identical pointers, though? This change is going to have annoying consequences for backwards compatibility. Thanks, Florian