From patchwork Mon Jan 8 12:34:17 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiongfeng Wang X-Patchwork-Id: 123697 Delivered-To: patch@linaro.org Received: by 10.140.22.227 with SMTP id 90csp2661470qgn; Mon, 8 Jan 2018 04:29:08 -0800 (PST) X-Google-Smtp-Source: ACJfBos+XT1WK9Mk5TCrJ2zYpDtJPCDpcE85eKGXR4wmknotwpxRoDG0kso3pBqEfNeLL+8KNSnn X-Received: by 10.159.247.129 with SMTP id e1mr4464507pls.330.1515414548384; Mon, 08 Jan 2018 04:29:08 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1515414548; cv=none; d=google.com; s=arc-20160816; b=oRkKhgkUtA8KTeQE2/b6REYUaLfU3H9gaeInJUd+hRlfOpf39JXZhev+csmneZ4tXz KdvFTnSyawiPMmxsqybwLJOqY47/xh1gA8RMuenGVmGhEVOEutAVC6kLEUfs1jGvvjdF Vtze5n+HirZYWQ7Yol1Ntj9d70E7v5YII5kAqL203ABdFd89JFE4kEjIbwkNqvcmqQL2 scb/EsjwPyK/2NkAVeRMhM2FGnzqUlV0fzQBhr4Aey3u/qtdlaalIxsqRyxqwTCd9c7s l31etN0LOQbdMTfX4A/giUsESKzdvDcR+BcvJGqSlhllMNDbP997twvUxa1in2vsUac+ IOqg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:message-id:date:subject:cc :to:from:arc-authentication-results; bh=YNZQdrrvEvOGuDggfvdGtTe0vjbOzzwHo3AHVRh4YTk=; b=IPWH5fX56s1gi6QiQo1w0qCywpunNKJQyrpjMva9w9+gJKSzQoIRE9Hri5YcL+57hN fos+vU5SBM3mpsidflGxEAAsS4x+3mqrNVPyenDROUho+JdUqkTRWSkwwNNbwVYWHR/A M7YAHOjv52etcdAel/OAKPjEomwI8YEZMkBHZELs1UodPV05CW8bKrA3KevQEOeId+qO io28pSQtAA5cEaMvX2MOLIw9lVnWARM8bvutGBSsRiwyq/urS1rHTWypX4ZpR2tGY3N6 XWzNtYEEfzJCLxcb8Iq1Qy4FHD151MhEhsrQ4kAYLnx/1L9M3c7wK9NVj9MWG7MyA8Lo Rvcw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p25si1313958pgn.178.2018.01.08.04.29.08; Mon, 08 Jan 2018 04:29:08 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757215AbeAHM3G (ORCPT + 28 others); Mon, 8 Jan 2018 07:29:06 -0500 Received: from szxga06-in.huawei.com ([45.249.212.32]:34788 "EHLO huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1757183AbeAHM3F (ORCPT ); Mon, 8 Jan 2018 07:29:05 -0500 Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id C0415FEF88161 for ; Mon, 8 Jan 2018 20:28:49 +0800 (CST) Received: from localhost.localdomain.localdomain (10.175.113.25) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.361.1; Mon, 8 Jan 2018 20:28:42 +0800 From: Xiongfeng Wang To: CC: , Subject: [PATCH] test_hexdump: use memcpy() to avoid warning print Date: Mon, 8 Jan 2018 20:34:17 +0800 Message-ID: <1515414857-182589-1-git-send-email-wangxiongfeng2@huawei.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Xiongfeng Wang gcc-8 reports lib/test_hexdump.c: In function 'test_hexdump_prepare_test.isra.0': ./include/linux/string.h:245:9: warning: '__builtin_strncpy' output truncated copying between 0 and 32 bytes from a string of length 32 [-Wstringop-truncation] Since we don't need to copy '\0' in the end of the string, we can just use memcpy() to avoid this warning. Signed-off-by: Xiongfeng Wang --- lib/test_hexdump.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- 1.8.3.1 diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c index 3f415d8..a495726 100644 --- a/lib/test_hexdump.c +++ b/lib/test_hexdump.c @@ -81,7 +81,7 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize, const char *q = *result++; size_t amount = strlen(q); - strncpy(p, q, amount); + memcpy(p, q, amount); p += amount; *p++ = ' '; @@ -95,7 +95,7 @@ static void __init test_hexdump_prepare_test(size_t len, int rowsize, *p++ = ' '; } while (p < test + rs * 2 + rs / gs + 1); - strncpy(p, data_a, l); + memcpy(p, data_a, l); p += l; }