From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stable-bounces@dpdk.org>
Received: from dpdk.org (dpdk.org [92.243.14.124])
	by dpdk.space (Postfix) with ESMTP id 47ACCA00E6
	for <public@inbox.dpdk.org>; Mon, 10 Jun 2019 14:10:20 +0200 (CEST)
Received: from [92.243.14.124] (localhost [127.0.0.1])
	by dpdk.org (Postfix) with ESMTP id 1A9DB1C035;
	Mon, 10 Jun 2019 14:10:20 +0200 (CEST)
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28])
 by dpdk.org (Postfix) with ESMTP id 9AD911BFB9;
 Mon, 10 Jun 2019 14:10:16 +0200 (CEST)
Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com
 [10.5.11.13])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mx1.redhat.com (Postfix) with ESMTPS id 967BE3087930;
 Mon, 10 Jun 2019 12:10:12 +0000 (UTC)
Received: from dhcp-25.97.bos.redhat.com (unknown [10.18.25.61])
 by smtp.corp.redhat.com (Postfix) with ESMTPS id 9EBD060925;
 Mon, 10 Jun 2019 12:10:10 +0000 (UTC)
From: Aaron Conole <aconole@redhat.com>
To: <jerinj@marvell.com>
Cc: <dev@dpdk.org>, <thomas@monjalon.net>, <gavin.hu@arm.com>,
 <honnappa.nagarahalli@arm.com>, <msantana@redhat.com>, <stable@dpdk.org>
In-Reply-To: <20190606145054.39995-1-jerinj@marvell.com> (jerinj@marvell.com's
 message of "Thu, 6 Jun 2019 20:20:54 +0530")
References: <20190606145054.39995-1-jerinj@marvell.com>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux)
Date: Mon, 10 Jun 2019 08:10:09 -0400
Message-ID: <f7th88x7iam.fsf@dhcp-25.97.bos.redhat.com>
MIME-Version: 1.0
Content-Type: text/plain
X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16
 (mx1.redhat.com [10.5.110.45]); Mon, 10 Jun 2019 12:10:15 +0000 (UTC)
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH] acl: fix build issue with some
	arm64 compiler
X-BeenThere: stable@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches for DPDK stable branches <stable.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/stable>,
 <mailto:stable-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/stable/>
List-Post: <mailto:stable@dpdk.org>
List-Help: <mailto:stable-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/stable>,
 <mailto:stable-request@dpdk.org?subject=subscribe>
Errors-To: stable-bounces@dpdk.org
Sender: "stable" <stable-bounces@dpdk.org>

<jerinj@marvell.com> writes:

> From: Jerin Jacob <jerinj@marvell.com>
>
> Some compilers reporting the following error, though the existing
> code doesn't have any uninitialized variable case.
> Just to make compiler happy, initialize the int32x4_t variable
> one shot in C language.
>
> ../lib/librte_acl/acl_run_neon.h: In function 'search_neon_4'
> ../lib/librte_acl/acl_run_neon.h:230:12: error: 'input' may be
> used uninitialized in this function [-Werror=maybe-uninitialized]
>   int32x4_t input;
>
> Fixes: 34fa6c27c156 ("acl: add NEON optimization for ARMv8")
> Cc: stable@dpdk.org
>
> Signed-off-by: Jerin Jacob <jerinj@marvell.com>
> ---

This pattern is easy to understand, congruent with other usages in the
code base, has good patch statistics, and solves the issue.

Acked-by: Aaron Conole <aconole@redhat.com>

I prefer this solution to the others posted.  Thanks for looking into
it, Jerin!