From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2C59C43381 for ; Tue, 19 Feb 2019 01:04:19 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1744921738 for ; Tue, 19 Feb 2019 01:04:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1744921738 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 443MvN6sHQzDqGc for ; Tue, 19 Feb 2019 12:04:16 +1100 (AEDT) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 443MsW3KzhzDqDx for ; Tue, 19 Feb 2019 12:02:39 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix) id 443MsW2SCJz9sMl; Tue, 19 Feb 2019 12:02:39 +1100 (AEDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (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 ozlabs.org (Postfix) with ESMTPSA id 443MsW1n4Pz9sDn; Tue, 19 Feb 2019 12:02:37 +1100 (AEDT) From: Michael Ellerman To: Meelis Roos , linuxppc-dev@ozlabs.org Subject: Re: [PATCH] powerpc/ptrace: Simplify vr_get/set() to avoid GCC warning In-Reply-To: <0ef0b01c-e5e0-5295-3ccd-ff539dc82681@linux.ee> References: <20190215061400.20302-1-mpe@ellerman.id.au> <0ef0b01c-e5e0-5295-3ccd-ff539dc82681@linux.ee> Date: Tue, 19 Feb 2019 12:02:37 +1100 Message-ID: <8736okr3o2.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: malat@debian.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Meelis Roos writes: >> Rather than relying on that we can pass an explict end_pos based on >> the sizeof(vrsave). The result should be exactly the same but it's >> more obviously not over-reading/writing the stack and it avoids the >> compiler warning. > > It works on my PowerMac G4 with Debian-ports unstable with gcc 8. Thanks. cheers