From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f45.google.com (mail-wm0-f45.google.com [74.125.82.45]) by dpdk.org (Postfix) with ESMTP id 68CB595D9 for ; Wed, 3 Feb 2016 19:58:00 +0100 (CET) Received: by mail-wm0-f45.google.com with SMTP id 128so179725290wmz.1 for ; Wed, 03 Feb 2016 10:58:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=k6BnYOA/mDQu10JYKqh4oiLft7tbXjuNebwaEyQlRMU=; b=r64jpsszMelDpqQD0kRQnDDgNNVVXoUmdF2fdIj5/9afwp00Vx7Lr/eXjyt9nn1JNs CkX2c7Kj8i0vEMaze+V3gm5wL/67hHkeB7aUSqcKvycRZP6Q9tnuCNL6WsgZ815DK9yV Uhspnq/D0ZLsDO7RCLJX0oxlrg0tAyX3jUY7VpsAHE9JsllJrCSasJlx1D7V4+qjwPvT orgOmGOFSu8LNpq67wFTqAbPSvWaY/jsovkUjKdFZT2AK//KtAkf5KFJj1f295ZTQLI9 rplq1+esantVymZrHCEvk2wnUOFYC3E6QBZj+N73gJK8qqplby4Mkb8o0qqnNZ4pEYkc AfKg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=k6BnYOA/mDQu10JYKqh4oiLft7tbXjuNebwaEyQlRMU=; b=ERT5iBCjV+KxoBpsuAin1eGpfm7lEk4xH9R5UBW6f3+PODJGS5DVw4JYJ+79nreguk Ltil3sgEr4lNint1XPT5EwTVNnKF/zIRaM5YsV3kl6Bj294ShMJ1UqsB2Sd5QnQPVDd5 yFUMjiMxDWaqxv9xoC4M+wbBYtPadRSp2By6uu+WzEN2IpNLvB8b+XMoIElQxnCzHhL3 Zlhp2hLwTIQZYP3izCySBy8OilC5kKsW4kHru4LSHaIIyQSOF4abvYjGT/Fpi4yt8st7 lcrsnlZQUvFMVnS4n9l5qjVlhDpBeHbMYQ+9szOIcdMxh+nailYErJWjcJpLeeJKkKB3 XlNQ== X-Gm-Message-State: AG10YOSyJ0dzUhjpb4/loepAsm+a6Nk4xJq9fWLcarsCIxqdoZ8G0RZ5UxkjY7QPEQSbPQnZ X-Received: by 10.194.87.201 with SMTP id ba9mr3640635wjb.128.1454525880229; Wed, 03 Feb 2016 10:58:00 -0800 (PST) Received: from localhost.localdomain (136-92-190-109.dsl.ovh.fr. [109.190.92.136]) by smtp.gmail.com with ESMTPSA id qs1sm7823424wjc.2.2016.02.03.10.57.58 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 03 Feb 2016 10:57:59 -0800 (PST) From: Thomas Monjalon To: dev@dpdk.org Date: Wed, 3 Feb 2016 19:56:37 +0100 Message-Id: <1454525799-25552-2-git-send-email-thomas.monjalon@6wind.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1454525799-25552-1-git-send-email-thomas.monjalon@6wind.com> References: <1454525799-25552-1-git-send-email-thomas.monjalon@6wind.com> Subject: [dpdk-dev] [PATCH 1/3] eal/x86: fix build with clang for old AVX X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Feb 2016 18:58:00 -0000 When configuring RTE_MACHINE to "default", rte_memcpy implementation is the default one (old AVX). In this code, clang raises a warning thanks to -Wsometimes-uninitialized: rte_memcpy.h:838:6: error: variable 'srcofs' is used uninitialized whenever 'if' condition is false if (dstofss > 0) { ^~~~~~~~~~~ rte_memcpy.h:849:6: note: uninitialized use occurs here if (srcofs == 0) { ^~~~~~ It is fixed by initializing srcofs to 0. Fixes: 1ae817f9f887 ("eal/x86: tune memcpy for platforms without AVX512") Signed-off-by: Thomas Monjalon --- lib/librte_eal/common/include/arch/x86/rte_memcpy.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/librte_eal/common/include/arch/x86/rte_memcpy.h b/lib/librte_eal/common/include/arch/x86/rte_memcpy.h index 8e2c53c..5badfbc 100644 --- a/lib/librte_eal/common/include/arch/x86/rte_memcpy.h +++ b/lib/librte_eal/common/include/arch/x86/rte_memcpy.h @@ -739,7 +739,7 @@ rte_memcpy(void *dst, const void *src, size_t n) uintptr_t srcu = (uintptr_t)src; void *ret = dst; size_t dstofss; - size_t srcofs; + size_t srcofs = 0; /** * Copy less than 16 bytes -- 2.7.0