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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 CD9F0C352AA for ; Tue, 1 Oct 2019 17:00:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 99F2621783 for ; Tue, 1 Oct 2019 17:00:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569949246; bh=AFahc8G12K7WvzeCEERC3mW1Z1th2gs47ouNqmHB0wA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UPaaGPmLr9UO8B7brFKHQXSoyHTpHqNdDYXNiTXrp4bZh8/TOddlyvS7naxdNFUPV eX42cMGU0B21hK7G/YjzX3amn0yOlbhuNhXuzuJ3zXjqYvbA2EliVeDEjwl5EhWvCK ZdvXhbUroAAbNW+xY3gZZpWdUcEKo64pZUcsl5eA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727312AbfJARAj (ORCPT ); Tue, 1 Oct 2019 13:00:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:52148 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730241AbfJAQkr (ORCPT ); Tue, 1 Oct 2019 12:40:47 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6B87E21A4A; Tue, 1 Oct 2019 16:40:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569948047; bh=AFahc8G12K7WvzeCEERC3mW1Z1th2gs47ouNqmHB0wA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PPiOLtLZtsPXzedIqFHTNWvPncwW1qkdB2L/UDaCacxr8FARikNWCww+ScfXlMmFx 5xmqvDN9tqzhuMtNZof0iPCZ+ThMvAmEvzqKg8foM331tDWXPdY/7hDYYfaCjtDuEy a0+NqT8cMq9t1THTZeViQYVnl9z4XA4k3dLNXZBY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Andrii Nakryiko , Daniel Borkmann , Sasha Levin , netdev@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH AUTOSEL 5.3 52/71] libbpf: fix false uninitialized variable warning Date: Tue, 1 Oct 2019 12:39:02 -0400 Message-Id: <20191001163922.14735-52-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191001163922.14735-1-sashal@kernel.org> References: <20191001163922.14735-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org From: Andrii Nakryiko [ Upstream commit aef70a1f44c0b570e6345c02c2d240471859f0a4 ] Some compilers emit warning for potential uninitialized next_id usage. The code is correct, but control flow is too complicated for some compilers to figure this out. Re-initialize next_id to satisfy compiler. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Signed-off-by: Sasha Levin --- tools/lib/bpf/btf_dump.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c index 7065bb5b27525..e1357dbb16c24 100644 --- a/tools/lib/bpf/btf_dump.c +++ b/tools/lib/bpf/btf_dump.c @@ -1213,6 +1213,7 @@ static void btf_dump_emit_type_chain(struct btf_dump *d, return; } + next_id = decls->ids[decls->cnt - 1]; next_t = btf__type_by_id(d->btf, next_id); multidim = btf_kind_of(next_t) == BTF_KIND_ARRAY; /* we need space if we have named non-pointer */ -- 2.20.1